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-rw-r--r--.gitignore4
-rw-r--r--.gitlab-ci.yml61
-rw-r--r--.travis.yml2
-rw-r--r--bootstrap.sh2
-rw-r--r--build_tools.sh3
-rw-r--r--ci/build.bat14
-rw-r--r--ci/build.sh15
-rw-r--r--ci/deps.bat4
-rw-r--r--ci/deps.sh17
-rw-r--r--ci/nsis_build.bat62
-rw-r--r--compiler.nimble4
-rw-r--r--compiler/aliases.nim3
-rw-r--r--compiler/ast.nim42
-rw-r--r--compiler/astalgo.nim77
-rw-r--r--compiler/canonicalizer.nim18
-rw-r--r--compiler/ccgcalls.nim9
-rw-r--r--compiler/ccgexprs.nim76
-rw-r--r--compiler/ccgstmts.nim39
-rw-r--r--compiler/ccgtrav.nim4
-rw-r--r--compiler/ccgtypes.nim32
-rw-r--r--compiler/cgen.nim93
-rw-r--r--compiler/cgmeth.nim5
-rw-r--r--compiler/docgen.nim37
-rw-r--r--compiler/extccomp.nim4
-rw-r--r--compiler/idgen.nim2
-rw-r--r--compiler/importer.nim5
-rw-r--r--compiler/installer.ini12
-rw-r--r--compiler/jsgen.nim53
-rw-r--r--compiler/jstypes.nim2
-rw-r--r--compiler/lambdalifting.nim7
-rw-r--r--compiler/lexer.nim9
-rw-r--r--compiler/lowerings.nim4
-rw-r--r--compiler/modules.nim16
-rw-r--r--compiler/msgs.nim8
-rw-r--r--compiler/nimblecmd.nim12
-rw-r--r--compiler/nversion.nim2
-rw-r--r--compiler/options.nim6
-rw-r--r--compiler/parser.nim20
-rw-r--r--compiler/passes.nim13
-rw-r--r--compiler/pragmas.nim6
-rw-r--r--compiler/renderer.nim21
-rw-r--r--compiler/rodread.nim93
-rw-r--r--compiler/rodwrite.nim111
-rw-r--r--compiler/ropes.nim7
-rw-r--r--compiler/scriptconfig.nim3
-rw-r--r--compiler/sem.nim10
-rw-r--r--compiler/semasgn.nim3
-rw-r--r--compiler/semcall.nim133
-rw-r--r--compiler/semexprs.nim84
-rw-r--r--compiler/semfields.nim2
-rw-r--r--compiler/semfold.nim29
-rw-r--r--compiler/seminst.nim39
-rw-r--r--compiler/semmagic.nim7
-rw-r--r--compiler/sempass2.nim43
-rw-r--r--compiler/semstmts.nim27
-rw-r--r--compiler/semtempl.nim29
-rw-r--r--compiler/semtypes.nim18
-rw-r--r--compiler/semtypinst.nim12
-rw-r--r--compiler/sigmatch.nim57
-rw-r--r--compiler/suggest.nim13
-rw-r--r--compiler/transf.nim7
-rw-r--r--compiler/trees.nim68
-rw-r--r--compiler/types.nim45
-rw-r--r--compiler/typesrenderer.nim12
-rw-r--r--compiler/vm.nim15
-rw-r--r--compiler/vmdeps.nim4
-rw-r--r--compiler/vmgen.nim16
-rw-r--r--config/nim.cfg21
-rw-r--r--config/nimdoc.cfg47
-rw-r--r--doc/advopt.txt1
-rw-r--r--doc/lib.rst2
-rw-r--r--doc/manual/lexing.txt4
-rw-r--r--doc/manual/pragmas.txt2
-rw-r--r--doc/manual/procs.txt10
-rw-r--r--doc/manual/stmts.txt4
-rw-r--r--doc/manual/syntax.txt3
-rw-r--r--doc/manual/templates.txt6
-rw-r--r--doc/manual/type_sections.txt2
-rw-r--r--doc/manual/types.txt14
-rw-r--r--doc/nimsuggest.rst4
-rw-r--r--doc/sets_fragment.txt4
-rw-r--r--doc/tut2.rst9
-rw-r--r--finish.nim158
-rw-r--r--install.txt9
-rw-r--r--install_nimble.nims6
-rw-r--r--install_tools.nims18
-rw-r--r--koch.nim153
-rw-r--r--lib/arch/arch.nim3
-rw-r--r--lib/core/macros.nim12
-rw-r--r--lib/impure/re.nim2
-rw-r--r--lib/nimbase.h10
-rw-r--r--lib/packages/docutils/rstgen.nim31
-rw-r--r--lib/posix/posix.nim8
-rw-r--r--lib/posix/termios.nim10
-rw-r--r--lib/pure/algorithm.nim2
-rw-r--r--lib/pure/asyncdispatch.nim859
-rw-r--r--lib/pure/asyncfile.nim143
-rw-r--r--lib/pure/asyncftpclient.nim21
-rw-r--r--lib/pure/asynchttpserver.nim30
-rw-r--r--lib/pure/asyncmacro.nim515
-rw-r--r--lib/pure/asyncnet.nim131
-rw-r--r--lib/pure/basic2d.nim4
-rw-r--r--lib/pure/basic3d.nim6
-rw-r--r--lib/pure/collections/sharedtables.nim21
-rw-r--r--lib/pure/collections/tableimpl.nim3
-rw-r--r--lib/pure/collections/tables.nim19
-rw-r--r--lib/pure/concurrency/threadpool.nim51
-rw-r--r--lib/pure/htmlparser.nim31
-rw-r--r--lib/pure/httpclient.nim484
-rw-r--r--lib/pure/httpcore.nim228
-rw-r--r--lib/pure/includes/asyncfutures.nim295
-rw-r--r--lib/pure/ioselectors.nim36
-rw-r--r--lib/pure/ioselects/ioselectors_epoll.nim4
-rw-r--r--lib/pure/ioselects/ioselectors_kqueue.nim41
-rw-r--r--lib/pure/ioselects/ioselectors_poll.nim2
-rw-r--r--lib/pure/ioselects/ioselectors_select.nim4
-rw-r--r--lib/pure/json.nim48
-rw-r--r--lib/pure/logging.nim244
-rw-r--r--lib/pure/marshal.nim24
-rw-r--r--lib/pure/net.nim58
-rw-r--r--lib/pure/os.nim57
-rw-r--r--lib/pure/osproc.nim68
-rw-r--r--lib/pure/rationals.nim2
-rw-r--r--lib/pure/securehash.nim55
-rw-r--r--lib/pure/selectors.nim5
-rw-r--r--lib/pure/stats.nim26
-rw-r--r--lib/pure/strtabs.nim38
-rw-r--r--lib/pure/terminal.nim44
-rw-r--r--lib/pure/times.nim7
-rw-r--r--lib/pure/unicode.nim6
-rw-r--r--lib/pure/unittest.nim30
-rw-r--r--lib/pure/xmltree.nim17
-rw-r--r--lib/stdlib.nimble2
-rw-r--r--lib/system.nim66
-rw-r--r--lib/system/alloc.nim4
-rw-r--r--lib/system/atomics.nim40
-rw-r--r--lib/system/avltree.nim8
-rw-r--r--lib/system/channels.nim56
-rw-r--r--lib/system/deepcopy.nim19
-rw-r--r--lib/system/dyncalls.nim5
-rw-r--r--lib/system/excpt.nim5
-rw-r--r--lib/system/gc.nim2
-rw-r--r--lib/system/gc2.nim12
-rw-r--r--lib/system/gc_common.nim1
-rw-r--r--lib/system/jssys.nim93
-rw-r--r--lib/system/mmdisp.nim2
-rw-r--r--lib/system/nimscript.nim2
-rw-r--r--lib/system/osalloc.nim2
-rw-r--r--lib/system/sysstr.nim7
-rw-r--r--lib/system/threads.nim12
-rw-r--r--lib/upcoming/asyncdispatch.nim859
-rw-r--r--lib/windows/registry.nim77
-rw-r--r--lib/windows/winlean.nim10
-rw-r--r--lib/wrappers/linenoise/clinenoise.c4
-rw-r--r--lib/wrappers/linenoise/linenoise.nim3
-rw-r--r--lib/wrappers/mysql.nim4
-rw-r--r--readme.md12
-rw-r--r--tests/array/troof2.nim4
-rw-r--r--tests/async/config.nims2
-rw-r--r--tests/async/tasyncdiscard.nim2
-rw-r--r--tests/async/tasynciossl.nim92
-rw-r--r--tests/async/tasyncsend4757.nim14
-rw-r--r--tests/async/tasyncssl.nim66
-rw-r--r--tests/async/tasyncudp.nim78
-rw-r--r--tests/async/tawaitsemantics.nim72
-rw-r--r--tests/async/tfuturevar.nim47
-rw-r--r--tests/async/tioselectors.nim213
-rw-r--r--tests/async/tmultisync.nim8
-rw-r--r--tests/async/tnewasyncudp.nim23
-rw-r--r--tests/async/tpolltimeouts.nim19
-rw-r--r--tests/async/tupcoming_async.nim114
-rw-r--r--tests/bind/tnicerrorforsymchoice.nim2
-rw-r--r--tests/ccgbugs/tescaping_temps.nim11
-rw-r--r--tests/ccgbugs/tuple_canon.nim7
-rw-r--r--tests/closure/tclosure4.nim2
-rw-r--r--tests/collections/tableadds.nim13
-rw-r--r--tests/collections/ttables.nim23
-rw-r--r--tests/collections/ttablesref.nim25
-rw-r--r--tests/cpp/tempty_generic_obj.nim22
-rw-r--r--tests/distinct/tcurrncy.nim8
-rw-r--r--tests/effects/tsidee4.nim6
-rw-r--r--tests/exception/texceptions.nim6
-rw-r--r--tests/exception/tunhandledexc.nim5
-rw-r--r--tests/float/tfloat4.nim6
-rw-r--r--tests/generics/tlamba_in_generic.nim13
-rw-r--r--tests/generics/ttypeclass_to_typeclass.nim12
-rw-r--r--tests/import_in_config/nim.cfg2
-rw-r--r--tests/import_in_config/other.nim0
-rw-r--r--tests/import_in_config/tmain.nim0
-rw-r--r--tests/js/taddr.nim7
-rw-r--r--tests/js/tbyvar.nim8
-rw-r--r--tests/js/tunittests.nim4
-rw-r--r--tests/macros/tgettype2.nim67
-rw-r--r--tests/manyloc/keineschweine/README.md2
-rw-r--r--tests/metatype/twildtypedesc.nim43
-rw-r--r--tests/objects/tinherit_from_generic.nim13
-rw-r--r--tests/osproc/tafalse.nim3
-rw-r--r--tests/osproc/texitcode.nim18
-rw-r--r--tests/overload/importA.nim5
-rw-r--r--tests/overload/importB.nim15
-rw-r--r--tests/overload/timport.nim7
-rw-r--r--tests/overload/tselfderef.nim17
-rw-r--r--tests/parallel/tsendtwice.nim71
-rw-r--r--tests/rodfiles/amethods.nim4
-rw-r--r--tests/rodfiles/gtkex1.nim6
-rw-r--r--tests/rodfiles/gtkex2.nim6
-rw-r--r--tests/rodfiles/int2bool.nim1
-rw-r--r--tests/stdlib/thttpclient.nim113
-rw-r--r--tests/stdlib/tmarshal.nim12
-rw-r--r--tests/stdlib/tnet_ll.nim3
-rw-r--r--tests/stdlib/tparseuints.nim2
-rw-r--r--tests/stdlib/ttime.nim70
-rw-r--r--tests/template/ttemp_in_varargs.nim9
-rw-r--r--tests/testament/backend.nim1
-rw-r--r--tests/testament/categories.nim51
-rw-r--r--tests/testament/tester.nim5
-rw-r--r--todo.txt1
-rw-r--r--tools/dochack/dochack.nim296
-rw-r--r--tools/dochack/karax.nim343
-rw-r--r--tools/nimgrep.nim8
-rw-r--r--tools/niminst/buildsh.tmpl1
-rw-r--r--tools/niminst/niminst.nim42
-rw-r--r--tools/niminst/nsis.tmpl217
-rw-r--r--tools/nimweb.nim49
-rw-r--r--tools/website.tmpl31
-rw-r--r--web/assets/news/images/0.15.0/doc_search.gifbin0 -> 4916578 bytes
-rw-r--r--web/assets/news/images/0.15.0/doc_sort.gifbin0 -> 9215210 bytes
-rw-r--r--web/assets/news/images/survey/10_needs.pngbin0 -> 39707 bytes
-rw-r--r--web/assets/news/images/survey/book.pngbin0 -> 54231 bytes
-rw-r--r--web/assets/news/images/survey/book_opinion.pngbin0 -> 39312 bytes
-rw-r--r--web/assets/news/images/survey/breakage.pngbin0 -> 42032 bytes
-rw-r--r--web/assets/news/images/survey/difficulty_fixing_breakage.pngbin0 -> 31324 bytes
-rw-r--r--web/assets/news/images/survey/domains.pngbin0 -> 59065 bytes
-rw-r--r--web/assets/news/images/survey/ex_nim.pngbin0 -> 45423 bytes
-rw-r--r--web/assets/news/images/survey/languages.pngbin0 -> 84839 bytes
-rw-r--r--web/assets/news/images/survey/learning_resources.pngbin0 -> 39711 bytes
-rw-r--r--web/assets/news/images/survey/nim_appeal.pngbin0 -> 54043 bytes
-rw-r--r--web/assets/news/images/survey/nim_displeasing.pngbin0 -> 52584 bytes
-rw-r--r--web/assets/news/images/survey/nim_domains.pngbin0 -> 58405 bytes
-rw-r--r--web/assets/news/images/survey/nimble_opinion.pngbin0 -> 41325 bytes
-rw-r--r--web/assets/news/images/survey/non_user.pngbin0 -> 45695 bytes
-rw-r--r--web/assets/news/images/survey/planning_to_use_at_work.pngbin65840 -> 47859 bytes
-rw-r--r--web/assets/news/images/survey/project_size_nim_rust.pngbin44455 -> 44546 bytes
-rw-r--r--web/assets/news/images/survey/upgrades_broke_things.pngbin71148 -> 0 bytes
-rw-r--r--web/assets/style.css14
-rw-r--r--web/bountysource.nim72
-rw-r--r--web/download.rst38
-rw-r--r--web/inactive_sponsors.csv50
-rw-r--r--web/news.rst6
-rw-r--r--web/news/2016_09_03_nim_community_survey_results.rst699
-rw-r--r--web/news/2016_09_30_version_0_15_0_released.rst517
-rw-r--r--web/news/nim_community_survey_results.rst317
-rw-r--r--web/news/version_0_15_released.rst108
-rw-r--r--web/sponsors.csv63
-rw-r--r--web/ticker.html19
255 files changed, 7549 insertions, 4053 deletions
diff --git a/.gitignore b/.gitignore
index e4cec0ef6..57b8a68d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,11 @@
 *
 !**/
 !*.*
+
+# Cache
 nimcache/
+rnimcache/
+dnimcache/
 
 *.o
 !/icons/*.o
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 000000000..76c94c8e7
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,61 @@
+image: ubuntu:16.04
+
+stages:
+  - pre-build
+  - build
+  - deploy
+  - test
+
+.linux_set_path: &linux_set_path_def
+  before_script:
+    - export PATH=$(pwd)/bin:$PATH
+  tags:
+    - linux
+
+.windows_set_path: &win_set_path_def
+  before_script:
+    - set PATH=%CD%\bin;%PATH%
+  tags:
+    - windows
+
+
+build-windows:
+  stage: build
+  script:
+    - ci\build.bat
+  artifacts:
+    paths:
+      - bin\nim.exe
+      - bin\nimd.exe
+      - compiler\nim.exe
+      - koch.exe
+    expire_in: 1 week
+  tags:
+    - windows
+
+deploy-windows:
+  stage: deploy
+  script:
+    - koch.exe winrelease
+  artifacts:
+    paths:
+      - build/*.exe
+      - build/*.zip
+    expire_in: 1 week
+  tags:
+    - windows
+    - fast
+
+
+
+test-windows:
+  stage: test
+  <<: *win_set_path_def
+  script:
+    - call ci\deps.bat
+    - nim c --taintMode:on tests\testament\tester
+    - tests\testament\tester.exe --pedantic all
+  tags:
+    - windows
+    - fast
+
diff --git a/.travis.yml b/.travis.yml
index 0ebeeb995..ebf287502 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,7 +28,7 @@ script:
   - nimble install zip
   - nimble install opengl
   - nimble install sdl1
-  - nimble install jester
+  - nimble install jester@#head
   - nimble install niminst
   - nim c --taintMode:on tests/testament/tester
   - tests/testament/tester --pedantic all
diff --git a/bootstrap.sh b/bootstrap.sh
index dd551b52d..5d05ddbf8 100644
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -3,7 +3,7 @@ set -e
 set -x
 
 if [ ! -e csources/.git ]; then
-	git clone --depth 1 git://github.com/nim-lang/csources.git csources
+	git clone --depth 1 https://github.com/nim-lang/csources.git csources
 fi
 
 cd "csources"
diff --git a/build_tools.sh b/build_tools.sh
new file mode 100644
index 000000000..4d867b0ad
--- /dev/null
+++ b/build_tools.sh
@@ -0,0 +1,3 @@
+./bin/nim c --noNimblePath -p:compiler -o:./bin/nimble dist/nimble/src/nimble.nim
+./bin/nim c --noNimblePath -p:compiler -o:./bin/nimsuggest dist/nimsuggest/nimsuggest.nim
+./bin/nim c -o:./bin/nimgrep tools/nimgrep.nim
diff --git a/ci/build.bat b/ci/build.bat
new file mode 100644
index 000000000..cdce8d3d2
--- /dev/null
+++ b/ci/build.bat
@@ -0,0 +1,14 @@
+REM Some debug info
+echo "Running on %CI_RUNNER_ID% (%CI_RUNNER_DESCRIPTION%) with tags %CI_RUNNER_TAGS%."
+gcc -v
+
+git clone --depth 1 https://github.com/nim-lang/csources.git
+cd csources
+call build64.bat
+cd ..
+set PATH=%CD%\bin;%PATH%
+nim -v
+nim c koch
+koch.exe boot
+copy bin/nim bin/nimd
+koch.exe boot -d:release
diff --git a/ci/build.sh b/ci/build.sh
new file mode 100644
index 000000000..a0fee1497
--- /dev/null
+++ b/ci/build.sh
@@ -0,0 +1,15 @@
+sh ci/deps.sh
+
+# Build from C sources.
+git clone --depth 1 https://github.com/nim-lang/csources.git
+cd csources
+sh build.sh
+cd ..
+# Add Nim to the PATH
+export PATH=$(pwd)/bin:$PATH
+# Bootstrap.
+nim -v
+nim c koch
+./koch boot
+cp bin/nim bin/nimd
+./koch boot -d:release
diff --git a/ci/deps.bat b/ci/deps.bat
new file mode 100644
index 000000000..bda1fe14f
--- /dev/null
+++ b/ci/deps.bat
@@ -0,0 +1,4 @@
+nim e install_nimble.nims
+nim e tests/test_nimscript.nims
+nimble update
+nimble install -y zip opengl sdl1 jester@#head niminst
diff --git a/ci/deps.sh b/ci/deps.sh
new file mode 100644
index 000000000..3385a213b
--- /dev/null
+++ b/ci/deps.sh
@@ -0,0 +1,17 @@
+# Some debug info
+echo "Running on $CI_RUNNER_ID ($CI_RUNNER_DESCRIPTION) with tags $CI_RUNNER_TAGS."
+
+# Packages
+apt-get update -qq
+apt-get install -y -qq build-essential git libcurl4-openssl-dev libsdl1.2-dev libgc-dev nodejs fasm
+
+gcc -v
+
+fasm -v
+export PATH=$(pwd)/bin:$PATH
+
+# Nimble deps
+nim e install_nimble.nims
+nim e tests/test_nimscript.nims
+nimble update
+nimble install zip opengl sdl1 jester@#head niminst
diff --git a/ci/nsis_build.bat b/ci/nsis_build.bat
new file mode 100644
index 000000000..657b2b90a
--- /dev/null
+++ b/ci/nsis_build.bat
@@ -0,0 +1,62 @@
+REM - Run the full testsuite;  tests\testament\tester all
+
+REM - Uncomment the list of changes in news.txt
+REM - write a news ticker entry
+REM - Update the version
+
+REM - Generate the full docs;  koch web0
+REM - Generate the installers;
+REM - Update the version in system.nim
+REM - Test the installers
+REM - Tag the release
+REM - Merge devel into master
+REM - Update csources
+
+set NIMVER=%1
+
+Rem Build -docs file:
+koch web0
+cd web\upload
+7z a -tzip docs-%NIMVER%.zip *.html
+move /y docs-%NIMVER%.zip download
+cd ..\..
+
+Rem Build .zip file:
+rem koch csources -d:release
+rem koch xz -d:release
+rem move /y build\nim-%NIMVER%.zip web\upload\download
+
+
+rem Grab C sources and nimsuggest
+git clone --depth 1 https://github.com/nim-lang/csources.git
+
+set PATH=%CD%\bin;%PATH%
+
+ReM Build Win32 version:
+
+set PATH=C:\Users\araq\projects\mingw32\bin;%PATH%
+cd csources
+call build.bat
+cd ..
+ReM Rebuilding koch is necessary because it uses its pointer size to determine
+ReM which mingw link to put in the NSIS installer.
+nim c --out:koch_temp koch || exit /b
+koch_temp boot -d:release || exit /b
+koch_temp nsis -d:release || exit /b
+koch_temp zip -d:release || exit /b
+dir build
+move /y build\nim_%NIMVER%.exe build\nim-%NIMVER%_x32.exe || exit /b
+move /y build\nim_%NIMVER%.zip build\nim-%NIMVER%_x32.zip || exit /b
+
+
+ReM Build Win64 version:
+set PATH=C:\Users\araq\projects\mingw64\bin;%PATH%
+cd csources
+call build64.bat
+cd ..
+nim c --out:koch_temp koch || exit /b
+koch_temp boot -d:release || exit /b
+koch_temp nsis -d:release || exit /b
+koch_temp zip -d:release || exit /b
+move /y build\nim_%NIMVER%.exe build\nim-%NIMVER%_x64.exe || exit /b
+move /y build\nim_%NIMVER%.zip build\nim-%NIMVER%_x64.zip || exit /b
diff --git a/compiler.nimble b/compiler.nimble
index c63fe49bf..66d2ee7c2 100644
--- a/compiler.nimble
+++ b/compiler.nimble
@@ -1,6 +1,6 @@
 [Package]
 name = "compiler"
-version = "0.14.3"
+version = "0.15.1"
 author = "Andreas Rumpf"
 description = "Compiler package providing the compiler sources as a library."
 license = "MIT"
@@ -8,4 +8,4 @@ license = "MIT"
 InstallDirs = "doc, compiler"
 
 [Deps]
-Requires: "nim >= 0.13.0"
+Requires: "nim >= 0.14.0"
diff --git a/compiler/aliases.nim b/compiler/aliases.nim
index 4b592ee60..4186900ec 100644
--- a/compiler/aliases.nim
+++ b/compiler/aliases.nim
@@ -46,7 +46,8 @@ proc isPartOfAux(a, b: PType, marker: var IntSet): TAnalysisResult =
   if compareTypes(a, b, dcEqIgnoreDistinct): return arYes
   case a.kind
   of tyObject:
-    result = isPartOfAux(a.sons[0], b, marker)
+    if a.sons[0] != nil:
+      result = isPartOfAux(a.sons[0].skipTypes(skipPtrs), b, marker)
     if result == arNo: result = isPartOfAux(a.n, b, marker)
   of tyGenericInst, tyDistinct:
     result = isPartOfAux(lastSon(a), b, marker)
diff --git a/compiler/ast.nim b/compiler/ast.nim
index 277a21ba5..d8939fc60 100644
--- a/compiler/ast.nim
+++ b/compiler/ast.nim
@@ -437,7 +437,7 @@ type
     nfExplicitCall # x.y() was used instead of x.y
     nfExprCall  # this is an attempt to call a regular expression
     nfIsRef     # this node is a 'ref' node; used for the VM
-    nfIsCursor  # this node is attached a cursor; used for idetools
+    nfPreventCg # this node should be ignored by the codegen
 
   TNodeFlags* = set[TNodeFlag]
   TTypeFlag* = enum   # keep below 32 for efficiency reasons (now: 28)
@@ -725,10 +725,7 @@ type
     s*: TStorageLoc
     flags*: TLocFlags         # location's flags
     t*: PType                 # type of location
-    r*: Rope                 # rope value of location (code generators)
-    heapRoot*: Rope          # keeps track of the enclosing heap object that
-                              # owns this location (required by GC algorithms
-                              # employing heap snapshots or sliding views)
+    r*: Rope                  # rope value of location (code generators)
 
   # ---------------- end of backend information ------------------------------
 
@@ -746,10 +743,6 @@ type
   TInstantiation* = object
     sym*: PSym
     concreteTypes*: seq[PType]
-    usedBy*: seq[int32]       # list of modules using the generic
-                              # needed in caas mode for purging the cache
-                              # XXX: it's possible to switch to a
-                              # simple ref count here
     compilesId*: CompilesId
 
   PInstantiation* = ref TInstantiation
@@ -767,7 +760,6 @@ type
     case kind*: TSymKind
     of skType, skGenericParam:
       typeInstCache*: seq[PType]
-      typScope*: PScope
     of routineKinds:
       procInstCache*: seq[PInstantiation]
       gcUnsafetyReason*: PSym  # for better error messages wrt gcsafe
@@ -862,9 +854,6 @@ type
     key*, val*: RootRef
 
   TPairSeq* = seq[TPair]
-  TTable* = object   # the same as table[PObject] of PObject
-    counter*: int
-    data*: TPairSeq
 
   TIdPair* = object
     key*: PIdObj
@@ -936,7 +925,7 @@ const
     skMacro, skTemplate, skConverter, skEnumField, skLet, skStub, skAlias}
   PersistentNodeFlags*: TNodeFlags = {nfBase2, nfBase8, nfBase16,
                                       nfDotSetter, nfDotField,
-                                      nfIsRef, nfIsCursor, nfLL}
+                                      nfIsRef, nfPreventCg, nfLL}
   namePos* = 0
   patternPos* = 1    # empty except for term rewriting macros
   genericParamsPos* = 2
@@ -1108,12 +1097,6 @@ proc copyIdTable*(dest: var TIdTable, src: TIdTable) =
   newSeq(dest.data, len(src.data))
   for i in countup(0, high(src.data)): dest.data[i] = src.data[i]
 
-proc copyTable*(dest: var TTable, src: TTable) =
-  dest.counter = src.counter
-  if isNil(src.data): return
-  setLen(dest.data, len(src.data))
-  for i in countup(0, high(src.data)): dest.data[i] = src.data[i]
-
 proc copyObjectSet*(dest: var TObjectSet, src: TObjectSet) =
   dest.counter = src.counter
   if isNil(src.data): return
@@ -1327,10 +1310,6 @@ proc initStrTable*(x: var TStrTable) =
 proc newStrTable*: TStrTable =
   initStrTable(result)
 
-proc initTable(x: var TTable) =
-  x.counter = 0
-  newSeq(x.data, StartSize)
-
 proc initIdTable*(x: var TIdTable) =
   x.counter = 0
   newSeq(x.data, StartSize)
@@ -1429,6 +1408,7 @@ proc copyNode*(src: PNode): PNode =
   result.info = src.info
   result.typ = src.typ
   result.flags = src.flags * PersistentNodeFlags
+  result.comment = src.comment
   when defined(useNodeIds):
     if result.id == nodeIdToDebug:
       echo "COMES FROM ", src.id
@@ -1447,6 +1427,7 @@ proc shallowCopy*(src: PNode): PNode =
   result.info = src.info
   result.typ = src.typ
   result.flags = src.flags * PersistentNodeFlags
+  result.comment = src.comment
   when defined(useNodeIds):
     if result.id == nodeIdToDebug:
       echo "COMES FROM ", src.id
@@ -1466,6 +1447,7 @@ proc copyTree*(src: PNode): PNode =
   result.info = src.info
   result.typ = src.typ
   result.flags = src.flags * PersistentNodeFlags
+  result.comment = src.comment
   when defined(useNodeIds):
     if result.id == nodeIdToDebug:
       echo "COMES FROM ", src.id
@@ -1511,19 +1493,9 @@ proc hasSubnodeWith*(n: PNode, kind: TNodeKind): bool =
         return true
     result = false
 
-proc replaceSons(n: PNode, oldKind, newKind: TNodeKind) =
-  for i in countup(0, sonsLen(n) - 1):
-    if n.sons[i].kind == oldKind: n.sons[i].kind = newKind
-
-proc sonsNotNil(n: PNode): bool =
-  for i in countup(0, sonsLen(n) - 1):
-    if n.sons[i] == nil:
-      return false
-  result = true
-
 proc getInt*(a: PNode): BiggestInt =
   case a.kind
-  of nkIntLit..nkUInt64Lit: result = a.intVal
+  of nkCharLit..nkUInt64Lit: result = a.intVal
   else:
     internalError(a.info, "getInt")
     result = 0
diff --git a/compiler/astalgo.nim b/compiler/astalgo.nim
index 3ca44ea7e..7c07b2995 100644
--- a/compiler/astalgo.nim
+++ b/compiler/astalgo.nim
@@ -31,17 +31,6 @@ proc objectSetIncl*(t: var TObjectSet, obj: RootRef)
 proc objectSetContainsOrIncl*(t: var TObjectSet, obj: RootRef): bool
   # more are not needed ...
 
-# ----------------------- (key, val)-Hashtables ----------------------------
-proc tablePut*(t: var TTable, key, val: RootRef)
-proc tableGet*(t: TTable, key: RootRef): RootRef
-type
-  TCmpProc* = proc (key, closure: RootRef): bool {.nimcall.} # true if found
-
-proc tableSearch*(t: TTable, key, closure: RootRef,
-                  comparator: TCmpProc): RootRef
-  # return val as soon as comparator returns true; if this never happens,
-  # nil is returned
-
 # ----------------------- str table -----------------------------------------
 proc strTableContains*(t: TStrTable, n: PSym): bool
 proc strTableAdd*(t: var TStrTable, n: PSym)
@@ -251,20 +240,6 @@ proc symToYamlAux(n: PSym, marker: var IntSet,
                   indent, maxRecDepth: int): Rope
 proc typeToYamlAux(n: PType, marker: var IntSet,
                    indent, maxRecDepth: int): Rope
-proc strTableToYaml(n: TStrTable, marker: var IntSet, indent: int,
-                    maxRecDepth: int): Rope =
-  var istr = rspaces(indent + 2)
-  result = rope("[")
-  var mycount = 0
-  for i in countup(0, high(n.data)):
-    if n.data[i] != nil:
-      if mycount > 0: add(result, ",")
-      addf(result, "$N$1$2",
-           [istr, symToYamlAux(n.data[i], marker, indent + 2, maxRecDepth - 1)])
-      inc(mycount)
-  if mycount > 0: addf(result, "$N$1", [rspaces(indent)])
-  add(result, "]")
-  assert(mycount == n.counter)
 
 proc ropeConstr(indent: int, c: openArray[Rope]): Rope =
   # array of (name, value) pairs
@@ -463,9 +438,6 @@ proc debug(n: PType) =
 proc debug(n: PNode) =
   echo($debugTree(n, 0, 100))
 
-const
-  EmptySeq = @[]
-
 proc nextTry(h, maxHash: Hash): Hash =
   result = ((5 * h) + 1) and maxHash
   # For any initial h in range(maxHash), repeating that maxHash times
@@ -519,55 +491,6 @@ proc objectSetContainsOrIncl(t: var TObjectSet, obj: RootRef): bool =
   inc(t.counter)
   result = false
 
-proc tableRawGet(t: TTable, key: RootRef): int =
-  var h: Hash = hashNode(key) and high(t.data) # start with real hash value
-  while t.data[h].key != nil:
-    if t.data[h].key == key:
-      return h
-    h = nextTry(h, high(t.data))
-  result = -1
-
-proc tableSearch(t: TTable, key, closure: RootRef,
-                 comparator: TCmpProc): RootRef =
-  var h: Hash = hashNode(key) and high(t.data) # start with real hash value
-  while t.data[h].key != nil:
-    if t.data[h].key == key:
-      if comparator(t.data[h].val, closure):
-        # BUGFIX 1
-        return t.data[h].val
-    h = nextTry(h, high(t.data))
-  result = nil
-
-proc tableGet(t: TTable, key: RootRef): RootRef =
-  var index = tableRawGet(t, key)
-  if index >= 0: result = t.data[index].val
-  else: result = nil
-
-proc tableRawInsert(data: var TPairSeq, key, val: RootRef) =
-  var h: Hash = hashNode(key) and high(data)
-  while data[h].key != nil:
-    assert(data[h].key != key)
-    h = nextTry(h, high(data))
-  assert(data[h].key == nil)
-  data[h].key = key
-  data[h].val = val
-
-proc tableEnlarge(t: var TTable) =
-  var n: TPairSeq
-  newSeq(n, len(t.data) * GrowthFactor)
-  for i in countup(0, high(t.data)):
-    if t.data[i].key != nil: tableRawInsert(n, t.data[i].key, t.data[i].val)
-  swap(t.data, n)
-
-proc tablePut(t: var TTable, key, val: RootRef) =
-  var index = tableRawGet(t, key)
-  if index >= 0:
-    t.data[index].val = val
-  else:
-    if mustRehash(len(t.data), t.counter): tableEnlarge(t)
-    tableRawInsert(t.data, key, val)
-    inc(t.counter)
-
 proc strTableContains(t: TStrTable, n: PSym): bool =
   var h: Hash = n.name.h and high(t.data) # start with real hash value
   while t.data[h] != nil:
diff --git a/compiler/canonicalizer.nim b/compiler/canonicalizer.nim
index 089bce302..2abe0a0e6 100644
--- a/compiler/canonicalizer.nim
+++ b/compiler/canonicalizer.nim
@@ -383,18 +383,28 @@ proc createDb() =
       interfHash varchar(256) not null,
       fullHash varchar(256) not null,
 
-      created timestamp not null default (DATETIME('now')),
+      created timestamp not null default (DATETIME('now'))
     );""")
 
   db.exec(sql"""
+    create table if not exists Backend(
+      id integer primary key,
+      strongdeps varchar(max) not null,
+      weakdeps varchar(max) not null,
+      header varchar(max) not null,
+      code varchar(max) not null
+    )
+
     create table if not exists Symbol(
       id integer primary key,
       module integer not null,
+      backend integer not null,
       name varchar(max) not null,
       data varchar(max) not null,
       created timestamp not null default (DATETIME('now')),
 
-      foreign key (module) references module(id)
+      foreign key (module) references Module(id),
+      foreign key (backend) references Backend(id)
     );""")
 
   db.exec(sql"""
@@ -409,7 +419,3 @@ proc createDb() =
     );""")
 
 
-  #db.exec(sql"""
-  #  --create unique index if not exists TsstNameIx on TestResult(name);
-  #  """, [])
-
diff --git a/compiler/ccgcalls.nim b/compiler/ccgcalls.nim
index dffb8a9a5..48157925c 100644
--- a/compiler/ccgcalls.nim
+++ b/compiler/ccgcalls.nim
@@ -411,7 +411,7 @@ proc genPatternCall(p: BProc; ri: PNode; pat: string; typ: PType): Rope =
         add(result, substr(pat, start, i - 1))
 
 proc genInfixCall(p: BProc, le, ri: PNode, d: var TLoc) =
-  var op, a: TLoc
+  var op: TLoc
   initLocExpr(p, ri.sons[0], op)
   # getUniqueType() is too expensive here:
   var typ = skipTypes(ri.sons[0].typ, abstractInst)
@@ -458,7 +458,7 @@ proc genInfixCall(p: BProc, le, ri: PNode, d: var TLoc) =
 
 proc genNamedParamCall(p: BProc, ri: PNode, d: var TLoc) =
   # generates a crappy ObjC call
-  var op, a: TLoc
+  var op: TLoc
   initLocExpr(p, ri.sons[0], op)
   var pl = ~"["
   # getUniqueType() is too expensive here:
@@ -536,8 +536,6 @@ proc genCall(p: BProc, e: PNode, d: var TLoc) =
   else:
     genPrefixCall(p, nil, e, d)
   postStmtActions(p)
-  when false:
-    if d.s == onStack and containsGarbageCollectedRef(d.t): keepAlive(p, d)
 
 proc genAsgnCall(p: BProc, le, ri: PNode, d: var TLoc) =
   if ri.sons[0].typ.skipTypes({tyGenericInst}).callConv == ccClosure:
@@ -549,6 +547,3 @@ proc genAsgnCall(p: BProc, le, ri: PNode, d: var TLoc) =
   else:
     genPrefixCall(p, le, ri, d)
   postStmtActions(p)
-  when false:
-    if d.s == onStack and containsGarbageCollectedRef(d.t): keepAlive(p, d)
-
diff --git a/compiler/ccgexprs.nim b/compiler/ccgexprs.nim
index 6c96f209e..be49ddc87 100644
--- a/compiler/ccgexprs.nim
+++ b/compiler/ccgexprs.nim
@@ -30,19 +30,6 @@ proc intLiteral(i: BiggestInt): Rope =
   else:
     result = ~"(IL64(-9223372036854775807) - IL64(1))"
 
-proc int32Literal(i: int): Rope =
-  if i == int(low(int32)):
-    result = ~"(-2147483647 -1)"
-  else:
-    result = rope(i)
-
-proc genHexLiteral(v: PNode): Rope =
-  # hex literals are unsigned in C
-  # so we don't generate hex literals any longer.
-  if v.kind notin {nkIntLit..nkUInt64Lit}:
-    internalError(v.info, "genHexLiteral")
-  result = intLiteral(v.intVal)
-
 proc getStrLit(m: BModule, s: string): Rope =
   discard cgsym(m, "TGenericSeq")
   result = getTempName(m)
@@ -171,7 +158,6 @@ proc getStorageLoc(n: PNode): TStorageLoc =
 proc genRefAssign(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
   if dest.s == OnStack or not usesNativeGC():
     linefmt(p, cpsStmts, "$1 = $2;$n", rdLoc(dest), rdLoc(src))
-    if needToKeepAlive in flags: keepAlive(p, dest)
   elif dest.s == OnHeap:
     # location is on heap
     # now the writer barrier is inlined for performance:
@@ -198,7 +184,6 @@ proc genRefAssign(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
   else:
     linefmt(p, cpsStmts, "#unsureAsgnRef((void**) $1, $2);$n",
             addrLoc(dest), rdLoc(src))
-    if needToKeepAlive in flags: keepAlive(p, dest)
 
 proc asgnComplexity(n: PNode): int =
   if n != nil:
@@ -218,7 +203,6 @@ proc optAsgnLoc(a: TLoc, t: PType, field: Rope): TLoc =
   result.s = a.s
   result.t = t
   result.r = rdLoc(a) & "." & field
-  result.heapRoot = a.heapRoot
 
 proc genOptAsgnTuple(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
   let newflags =
@@ -268,7 +252,6 @@ proc genGenericAsgn(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
       linefmt(p, cpsStmts,
            "memcpy((void*)$1, (NIM_CONST void*)$2, sizeof($3));$n",
            addrLoc(dest), addrLoc(src), rdLoc(dest))
-      if needToKeepAlive in flags: keepAlive(p, dest)
     else:
       linefmt(p, cpsStmts, "#genericShallowAssign((void*)$1, (void*)$2, $3);$n",
               addrLoc(dest), addrLoc(src), genTypeInfo(p.module, dest.t))
@@ -299,7 +282,6 @@ proc genAssignment(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
     else:
       if dest.s == OnStack or not usesNativeGC():
         linefmt(p, cpsStmts, "$1 = #copyString($2);$n", dest.rdLoc, src.rdLoc)
-        if needToKeepAlive in flags: keepAlive(p, dest)
       elif dest.s == OnHeap:
         # we use a temporary to care for the dreaded self assignment:
         var tmp: TLoc
@@ -310,7 +292,6 @@ proc genAssignment(p: BProc, dest, src: TLoc, flags: TAssignmentFlags) =
       else:
         linefmt(p, cpsStmts, "#unsureAsgnRef((void**) $1, #copyString($2));$n",
                addrLoc(dest), rdLoc(src))
-        if needToKeepAlive in flags: keepAlive(p, dest)
   of tyProc:
     if needsComplexAssignment(dest.t):
       # optimize closure assignment:
@@ -400,9 +381,6 @@ proc genDeepCopy(p: BProc; dest, src: TLoc) =
     linefmt(p, cpsStmts, "$1 = $2;$n", rdLoc(dest), rdLoc(src))
   else: internalError("genDeepCopy: " & $ty.kind)
 
-proc getDestLoc(p: BProc, d: var TLoc, typ: PType) =
-  if d.k == locNone: getTemp(p, typ, d)
-
 proc putLocIntoDest(p: BProc, d: var TLoc, s: TLoc) =
   if d.k != locNone:
     if lfNoDeepCopy in d.flags: genAssignment(p, d, s, {})
@@ -453,13 +431,6 @@ proc unaryStmt(p: BProc, e: PNode, d: var TLoc, frmt: string) =
   initLocExpr(p, e.sons[1], a)
   lineCg(p, cpsStmts, frmt, [rdLoc(a)])
 
-proc binaryStmtChar(p: BProc, e: PNode, d: var TLoc, frmt: string) =
-  var a, b: TLoc
-  if (d.k != locNone): internalError(e.info, "binaryStmtChar")
-  initLocExpr(p, e.sons[1], a)
-  initLocExpr(p, e.sons[2], b)
-  lineCg(p, cpsStmts, frmt, [rdCharLoc(a), rdCharLoc(b)])
-
 proc binaryExpr(p: BProc, e: PNode, d: var TLoc, frmt: string) =
   var a, b: TLoc
   assert(e.sons[1].typ != nil)
@@ -728,8 +699,6 @@ proc genAddr(p: BProc, e: PNode, d: var TLoc) =
 
 template inheritLocation(d: var TLoc, a: TLoc) =
   if d.k == locNone: d.s = a.s
-  if d.heapRoot == nil:
-    d.heapRoot = if a.heapRoot != nil: a.heapRoot else: a.r
 
 proc genRecordFieldAux(p: BProc, e: PNode, d, a: var TLoc): PType =
   initLocExpr(p, e.sons[0], a)
@@ -757,6 +726,7 @@ proc lookupFieldAgain(p: BProc, ty: PType; field: PSym; r: var Rope): PSym =
   var ty = ty
   assert r != nil
   while ty != nil:
+    ty = ty.skipTypes(skipPtrs)
     assert(ty.kind in {tyTuple, tyObject})
     result = lookupInRecord(ty.n, field.name)
     if result != nil: break
@@ -893,7 +863,6 @@ proc genSeqElem(p: BProc, x, y: PNode, d: var TLoc) =
            "if ((NU)($1) >= (NU)($2->$3)) #raiseIndexError();$n",
            rdLoc(b), rdLoc(a), lenField(p))
   if d.k == locNone: d.s = OnHeap
-  d.heapRoot = a.r
   if skipTypes(a.t, abstractVar).kind in {tyRef, tyPtr}:
     a.r = rfmt(nil, "(*$1)", a.r)
   putIntoDest(p, d, elemType(skipTypes(a.t, abstractVar)),
@@ -1008,9 +977,8 @@ proc genStrConcat(p: BProc, e: PNode, d: var TLoc) =
   add(p.s(cpsStmts), appends)
   if d.k == locNone:
     d = tmp
-    keepAlive(p, tmp)
   else:
-    genAssignment(p, d, tmp, {needToKeepAlive}) # no need for deep copying
+    genAssignment(p, d, tmp, {}) # no need for deep copying
   gcUsage(e)
 
 proc genStrAppend(p: BProc, e: PNode, d: var TLoc) =
@@ -1047,7 +1015,6 @@ proc genStrAppend(p: BProc, e: PNode, d: var TLoc) =
                         rdLoc(dest), rdLoc(a)))
   linefmt(p, cpsStmts, "$1 = #resizeString($1, $2$3);$n",
           rdLoc(dest), lens, rope(L))
-  keepAlive(p, dest)
   add(p.s(cpsStmts), appends)
   gcUsage(e)
 
@@ -1067,7 +1034,6 @@ proc genSeqElemAppend(p: BProc, e: PNode, d: var TLoc) =
       rdLoc(a),
       getTypeDesc(p.module, skipTypes(e.sons[1].typ, abstractVar)),
       getTypeDesc(p.module, bt)])
-  keepAlive(p, a)
   #if bt != b.t:
   #  echo "YES ", e.info, " new: ", typeToString(bt), " old: ", typeToString(b.t)
   initLoc(dest, locExpr, bt, OnHeap)
@@ -1094,7 +1060,7 @@ proc rawGenNew(p: BProc, a: TLoc, sizeExpr: Rope) =
               genTypeInfo(p.module, refType),
               sizeExpr]
   if a.s == OnHeap and usesNativeGC():
-    # use newObjRC1 as an optimization; and we don't need 'keepAlive' either
+    # use newObjRC1 as an optimization
     if canFormAcycle(a.t):
       linefmt(p, cpsStmts, "if ($1) #nimGCunref($1);$n", a.rdLoc)
     else:
@@ -1103,7 +1069,7 @@ proc rawGenNew(p: BProc, a: TLoc, sizeExpr: Rope) =
     linefmt(p, cpsStmts, "$1 = $2;$n", a.rdLoc, b.rdLoc)
   else:
     b.r = ropecg(p.module, "($1) #newObj($2, $3)", args)
-    genAssignment(p, a, b, {needToKeepAlive})  # set the object type:
+    genAssignment(p, a, b, {})  # set the object type:
   let bt = skipTypes(refType.sons[0], abstractRange)
   genObjectInit(p, cpsStmts, bt, a, false)
 
@@ -1134,7 +1100,7 @@ proc genNewSeqAux(p: BProc, dest: TLoc, length: Rope) =
     linefmt(p, cpsStmts, "$1 = $2;$n", dest.rdLoc, call.rdLoc)
   else:
     call.r = ropecg(p.module, "($1) #newSeq($2, $3)", args)
-    genAssignment(p, dest, call, {needToKeepAlive})
+    genAssignment(p, dest, call, {})
 
 proc genNewSeq(p: BProc, e: PNode) =
   var a, b: TLoc
@@ -1199,7 +1165,6 @@ proc genObjConstr(p: BProc, e: PNode, d: var TLoc) =
     tmp2.k = locTemp
     tmp2.t = field.loc.t
     tmp2.s = if isRef: OnHeap else: OnStack
-    tmp2.heapRoot = tmp.r
     expr(p, it.sons[1], tmp2)
 
   if d.k == locNone:
@@ -1246,7 +1211,6 @@ proc genNewFinalize(p: BProc, e: PNode) =
     a, b, f: TLoc
     refType, bt: PType
     ti: Rope
-    oldModule: BModule
   refType = skipTypes(e.sons[1].typ, abstractVarRange)
   initLocExpr(p, e.sons[1], a)
   initLocExpr(p, e.sons[2], f)
@@ -1256,7 +1220,7 @@ proc genNewFinalize(p: BProc, e: PNode) =
   b.r = ropecg(p.module, "($1) #newObj($2, sizeof($3))", [
       getTypeDesc(p.module, refType),
       ti, getTypeDesc(p.module, skipTypes(refType.lastSon, abstractRange))])
-  genAssignment(p, a, b, {needToKeepAlive})  # set the object type:
+  genAssignment(p, a, b, {})  # set the object type:
   bt = skipTypes(refType.lastSon, abstractRange)
   genObjectInit(p, cpsStmts, bt, a, false)
   gcUsage(e)
@@ -1294,7 +1258,7 @@ proc genOf(p: BProc, x: PNode, typ: PType, d: var TLoc) =
   if not p.module.compileToCpp:
     while t.kind == tyObject and t.sons[0] != nil:
       add(r, ~".Sup")
-      t = skipTypes(t.sons[0], typedescInst)
+      t = skipTypes(t.sons[0], skipPtrs)
   if isObjLackingTypeField(t):
     globalError(x.info, errGenerated,
       "no 'of' operator available for pure objects")
@@ -1366,7 +1330,7 @@ proc genDollar(p: BProc, n: PNode, d: var TLoc, frmt: string) =
   initLocExpr(p, n.sons[1], a)
   a.r = ropecg(p.module, frmt, [rdLoc(a)])
   if d.k == locNone: getTemp(p, n.typ, d)
-  genAssignment(p, d, a, {needToKeepAlive})
+  genAssignment(p, d, a, {})
   gcUsage(n)
 
 proc genArrayLen(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
@@ -1408,12 +1372,10 @@ proc genSetLengthSeq(p: BProc, e: PNode, d: var TLoc) =
   lineCg(p, cpsStmts, setLenPattern, [
       rdLoc(a), rdLoc(b), getTypeDesc(p.module, t),
       getTypeDesc(p.module, t.sons[0])])
-  keepAlive(p, a)
   gcUsage(e)
 
 proc genSetLengthStr(p: BProc, e: PNode, d: var TLoc) =
   binaryStmt(p, e, d, "$1 = #setLengthStr($1, $2);$n")
-  keepAlive(p, d)
   gcUsage(e)
 
 proc genSwap(p: BProc, e: PNode, d: var TLoc) =
@@ -1683,7 +1645,6 @@ proc binaryFloatArith(p: BProc, e: PNode, d: var TLoc, m: TMagic) =
     binaryArith(p, e, d, m)
 
 proc genMagicExpr(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
-  var line, filen: Rope
   case op
   of mOr, mAnd: genAndOr(p, e, d, op)
   of mNot..mToBiggestInt: unaryArith(p, e, d, op)
@@ -1721,10 +1682,7 @@ proc genMagicExpr(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
         getTypeDesc(p.module, ranged), res])
 
   of mConStrStr: genStrConcat(p, e, d)
-  of mAppendStrCh:
-    binaryStmt(p, e, d, "$1 = #addChar($1, $2);$n")
-    # strictly speaking we need to generate "keepAlive" here too, but this
-    # very likely not needed and would slow down the code too much I fear
+  of mAppendStrCh: binaryStmt(p, e, d, "$1 = #addChar($1, $2);$n")
   of mAppendStrStr: genStrAppend(p, e, d)
   of mAppendSeqElem: genSeqElemAppend(p, e, d)
   of mEqStr: genStrEquals(p, e, d)
@@ -1918,7 +1876,7 @@ proc upConv(p: BProc, n: PNode, d: var TLoc) =
     if not p.module.compileToCpp:
       while t.kind == tyObject and t.sons[0] != nil:
         add(r, ".Sup")
-        t = skipTypes(t.sons[0], abstractInst)
+        t = skipTypes(t.sons[0], skipPtrs)
     if nilCheck != nil:
       linefmt(p, cpsStmts, "if ($1) #chckObj($2.m_type, $3);$n",
               nilCheck, r, genTypeInfo(p.module, dest))
@@ -2018,7 +1976,8 @@ proc expr(p: BProc, n: PNode, d: var TLoc) =
     of skEnumField:
       putIntoDest(p, d, n.typ, rope(sym.position))
     of skVar, skForVar, skResult, skLet:
-      if sfGlobal in sym.flags: genVarPrototype(p.module, sym)
+      if {sfGlobal, sfThread} * sym.flags != {}:
+        genVarPrototype(p.module, sym)
       if sym.loc.r == nil or sym.loc.t == nil:
         #echo "FAILED FOR PRCO ", p.prc.name.s
         #echo renderTree(p.prc.ast, {renderIds})
@@ -2126,11 +2085,14 @@ proc expr(p: BProc, n: PNode, d: var TLoc) =
   of nkCaseStmt: genCase(p, n, d)
   of nkReturnStmt: genReturnStmt(p, n)
   of nkBreakStmt: genBreakStmt(p, n)
-  of nkAsgn: genAsgn(p, n, fastAsgn=false)
+  of nkAsgn:
+    if nfPreventCg notin n.flags:
+      genAsgn(p, n, fastAsgn=false)
   of nkFastAsgn:
-    # transf is overly aggressive with 'nkFastAsgn', so we work around here.
-    # See tests/run/tcnstseq3 for an example that would fail otherwise.
-    genAsgn(p, n, fastAsgn=p.prc != nil)
+    if nfPreventCg notin n.flags:
+      # transf is overly aggressive with 'nkFastAsgn', so we work around here.
+      # See tests/run/tcnstseq3 for an example that would fail otherwise.
+      genAsgn(p, n, fastAsgn=p.prc != nil)
   of nkDiscardStmt:
     if n.sons[0].kind != nkEmpty:
       genLineDir(p, n)
diff --git a/compiler/ccgstmts.nim b/compiler/ccgstmts.nim
index a5ce147c3..10b5641c5 100644
--- a/compiler/ccgstmts.nim
+++ b/compiler/ccgstmts.nim
@@ -21,7 +21,7 @@ proc registerGcRoot(p: BProc, v: PSym) =
     # we register a specialized marked proc here; this has the advantage
     # that it works out of the box for thread local storage then :-)
     let prc = genTraverseProcForGlobal(p.module, v)
-    appcg(p.module, p.module.initProc.procSec(cpsStmts),
+    appcg(p.module, p.module.initProc.procSec(cpsInit),
       "#nimRegisterGlobalMarker($1);$n", [prc])
 
 proc isAssignedImmediately(n: PNode): bool {.inline.} =
@@ -293,6 +293,8 @@ proc genIf(p: BProc, n: PNode, d: var TLoc) =
   genLineDir(p, n)
   let lend = getLabel(p)
   for i in countup(0, sonsLen(n) - 1):
+    # bug #4230: avoid false sharing between branches:
+    if d.k == locTemp and isEmptyType(n.typ): d.k = locNone
     let it = n.sons[i]
     if it.len == 2:
       when newScopeForIf: startBlock(p)
@@ -359,6 +361,7 @@ proc blockLeaveActions(p: BProc, howManyTrys, howManyExcepts: int) =
       linefmt(p, cpsStmts, "#popCurrentException();$n")
 
 proc genReturnStmt(p: BProc, t: PNode) =
+  if nfPreventCg in t.flags: return
   p.beforeRetNeeded = true
   genLineDir(p, t)
   if (t.sons[0].kind != nkEmpty): genStmts(p, t.sons[0])
@@ -459,7 +462,6 @@ proc genWhileStmt(p: BProc, t: PNode) =
   # significantly worse code
   var
     a: TLoc
-    labl: TLabel
   assert(sonsLen(t) == 2)
   inc(p.withinLoop)
   genLineDir(p, t)
@@ -488,16 +490,20 @@ proc genWhileStmt(p: BProc, t: PNode) =
 
   dec(p.withinLoop)
 
-proc genBlock(p: BProc, t: PNode, d: var TLoc) =
+proc genBlock(p: BProc, n: PNode, d: var TLoc) =
+  # bug #4505: allocate the temp in the outer scope
+  # so that it can escape the generated {}:
+  if not isEmptyType(n.typ) and d.k == locNone:
+    getTemp(p, n.typ, d)
   preserveBreakIdx:
     p.breakIdx = startBlock(p)
-    if t.sons[0].kind != nkEmpty:
+    if n.sons[0].kind != nkEmpty:
       # named block?
-      assert(t.sons[0].kind == nkSym)
-      var sym = t.sons[0].sym
+      assert(n.sons[0].kind == nkSym)
+      var sym = n.sons[0].sym
       sym.loc.k = locOther
       sym.position = p.breakIdx+1
-    expr(p, t.sons[1], d)
+    expr(p, n.sons[1], d)
     endBlock(p)
 
 proc genParForStmt(p: BProc, t: PNode) =
@@ -592,6 +598,8 @@ proc genCaseSecondPass(p: BProc, t: PNode, d: var TLoc,
                        labId, until: int): TLabel =
   var lend = getLabel(p)
   for i in 1..until:
+    # bug #4230: avoid false sharing between branches:
+    if d.k == locTemp and isEmptyType(t.typ): d.k = locNone
     lineF(p, cpsStmts, "LA$1: ;$n", [rope(labId + i)])
     if t.sons[i].kind == nkOfBranch:
       var length = sonsLen(t.sons[i])
@@ -727,6 +735,8 @@ proc genOrdinalCase(p: BProc, n: PNode, d: var TLoc) =
     lineF(p, cpsStmts, "switch ($1) {$n", [rdCharLoc(a)])
     var hasDefault = false
     for i in splitPoint+1 .. < n.len:
+      # bug #4230: avoid false sharing between branches:
+      if d.k == locTemp and isEmptyType(n.typ): d.k = locNone
       var branch = n[i]
       if branch.kind == nkOfBranch:
         genCaseRange(p, branch)
@@ -757,16 +767,6 @@ proc genCase(p: BProc, t: PNode, d: var TLoc) =
     else:
       genOrdinalCase(p, t, d)
 
-proc hasGeneralExceptSection(t: PNode): bool =
-  var length = sonsLen(t)
-  var i = 1
-  while (i < length) and (t.sons[i].kind == nkExceptBranch):
-    var blen = sonsLen(t.sons[i])
-    if blen == 1:
-      return true
-    inc(i)
-  result = false
-
 proc genTryCpp(p: BProc, t: PNode, d: var TLoc) =
   # code to generate:
   #
@@ -807,6 +807,8 @@ proc genTryCpp(p: BProc, t: PNode, d: var TLoc) =
   var i = 1
   var catchAllPresent = false
   while (i < length) and (t.sons[i].kind == nkExceptBranch):
+    # bug #4230: avoid false sharing between branches:
+    if d.k == locTemp and isEmptyType(t.typ): d.k = locNone
     let blen = sonsLen(t.sons[i])
     if i > 1: addf(p.s(cpsStmts), "else ", [])
     if blen == 1:
@@ -912,6 +914,8 @@ proc genTry(p: BProc, t: PNode, d: var TLoc) =
   inc p.inExceptBlock
   var i = 1
   while (i < length) and (t.sons[i].kind == nkExceptBranch):
+    # bug #4230: avoid false sharing between branches:
+    if d.k == locTemp and isEmptyType(t.typ): d.k = locNone
     var blen = sonsLen(t.sons[i])
     if blen == 1:
       # general except section:
@@ -1089,7 +1093,6 @@ proc genDiscriminantCheck(p: BProc, a, tmp: TLoc, objtype: PType,
 proc asgnFieldDiscriminant(p: BProc, e: PNode) =
   var a, tmp: TLoc
   var dotExpr = e.sons[0]
-  var d: PSym
   if dotExpr.kind == nkCheckedFieldExpr: dotExpr = dotExpr.sons[0]
   initLocExpr(p, e.sons[0], a)
   getTemp(p, a.t, tmp)
diff --git a/compiler/ccgtrav.nim b/compiler/ccgtrav.nim
index c4d47f148..a8c079b35 100644
--- a/compiler/ccgtrav.nim
+++ b/compiler/ccgtrav.nim
@@ -73,7 +73,9 @@ proc genTraverseProc(c: var TTraversalClosure, accessor: Rope, typ: PType) =
     lineF(p, cpsStmts, "}$n", [])
   of tyObject:
     for i in countup(0, sonsLen(typ) - 1):
-      genTraverseProc(c, accessor.parentObj(c.p.module), typ.sons[i])
+      var x = typ.sons[i]
+      if x != nil: x = x.skipTypes(skipPtrs)
+      genTraverseProc(c, accessor.parentObj(c.p.module), x)
     if typ.n != nil: genTraverseProc(c, accessor, typ.n)
   of tyTuple:
     let typ = getUniqueType(typ)
diff --git a/compiler/ccgtypes.nim b/compiler/ccgtypes.nim
index 3d1c2affc..eac734b3d 100644
--- a/compiler/ccgtypes.nim
+++ b/compiler/ccgtypes.nim
@@ -475,11 +475,11 @@ proc getRecordDesc(m: BModule, typ: PType, name: Rope,
         hasField = true
     elif m.compileToCpp:
       appcg(m, result, " : public $1 {$n",
-                      [getTypeDescAux(m, typ.sons[0], check)])
+                      [getTypeDescAux(m, typ.sons[0].skipTypes(skipPtrs), check)])
       hasField = true
     else:
       appcg(m, result, " {$n  $1 Sup;$n",
-                      [getTypeDescAux(m, typ.sons[0], check)])
+                      [getTypeDescAux(m, typ.sons[0].skipTypes(skipPtrs), check)])
       hasField = true
   else:
     addf(result, " {$n", [name])
@@ -546,7 +546,7 @@ proc getTypeDescAux(m: BModule, typ: PType, check: var IntSet): Rope =
   of tyRef, tyPtr, tyVar:
     var star = if t.kind == tyVar and tfVarIsPtr notin typ.flags and
                     compileToCpp(m): "&" else: "*"
-    var et = t.lastSon
+    var et = typ.skipTypes(abstractInst).lastSon
     var etB = et.skipTypes(abstractInst)
     if etB.kind in {tyArrayConstr, tyArray, tyOpenArray, tyVarargs}:
       # this is correct! sets have no proper base type, so we treat
@@ -744,14 +744,6 @@ proc getClosureType(m: BModule, t: PType, kind: TClosureTypeKind): Rope =
           "void* ClEnv;$n} $1;$n",
            [result, rettype, desc])
 
-proc getTypeDesc(m: BModule, magic: string): Rope =
-  var sym = magicsys.getCompilerProc(magic)
-  if sym != nil:
-    result = getTypeDesc(m, sym.typ)
-  else:
-    rawMessage(errSystemNeeds, magic)
-    result = nil
-
 proc finishTypeDescriptions(m: BModule) =
   var i = 0
   while i < len(m.typeStack):
@@ -820,7 +812,9 @@ proc genTypeInfoAuxBase(m: BModule; typ, origType: PType; name, base: Rope) =
 proc genTypeInfoAux(m: BModule, typ, origType: PType, name: Rope) =
   var base: Rope
   if (sonsLen(typ) > 0) and (typ.sons[0] != nil):
-    base = genTypeInfo(m, typ.sons[0])
+    var x = typ.sons[0]
+    if typ.kind == tyObject: x = x.skipTypes(skipPtrs)
+    base = genTypeInfo(m, x)
   else:
     base = rope("0")
   genTypeInfoAuxBase(m, typ, origType, name, base)
@@ -894,10 +888,11 @@ proc genObjectFields(m: BModule, typ: PType, n: PNode, expr: Rope) =
       else: internalError(n.info, "genObjectFields(nkRecCase)")
   of nkSym:
     var field = n.sym
-    addf(m.s[cfsTypeInit3], "$1.kind = 1;$n" &
-        "$1.offset = offsetof($2, $3);$n" & "$1.typ = $4;$n" &
-        "$1.name = $5;$n", [expr, getTypeDesc(m, typ),
-        field.loc.r, genTypeInfo(m, field.typ), makeCString(field.name.s)])
+    if field.bitsize == 0:
+      addf(m.s[cfsTypeInit3], "$1.kind = 1;$n" &
+          "$1.offset = offsetof($2, $3);$n" & "$1.typ = $4;$n" &
+          "$1.name = $5;$n", [expr, getTypeDesc(m, typ),
+          field.loc.r, genTypeInfo(m, field.typ), makeCString(field.name.s)])
   else: internalError(n.info, "genObjectFields")
 
 proc genObjectInfo(m: BModule, typ, origType: PType, name: Rope) =
@@ -909,7 +904,7 @@ proc genObjectInfo(m: BModule, typ, origType: PType, name: Rope) =
   addf(m.s[cfsTypeInit3], "$1.node = &$2;$n", [name, tmp])
   var t = typ.sons[0]
   while t != nil:
-    t = t.skipTypes(abstractInst)
+    t = t.skipTypes(skipPtrs)
     t.flags.incl tfObjHasKids
     t = t.sons[0]
 
@@ -1000,9 +995,6 @@ proc fakeClosureType(owner: PSym): PType =
 type
   TTypeInfoReason = enum  ## for what do we need the type info?
     tiNew,                ## for 'new'
-    tiNewSeq,             ## for 'newSeq'
-    tiNonVariantAsgn,     ## for generic assignment without variants
-    tiVariantAsgn         ## for generic assignment with variants
 
 include ccgtrav
 
diff --git a/compiler/cgen.nim b/compiler/cgen.nim
index 9851ab0e2..d80a68609 100644
--- a/compiler/cgen.nim
+++ b/compiler/cgen.nim
@@ -167,10 +167,6 @@ proc linefmt(p: BProc, s: TCProcSection, frmt: FormatStr,
              args: varargs[Rope]) =
   add(p.s(s), indentLine(p, ropecg(p.module, frmt, args)))
 
-proc appLineCg(p: BProc, r: var Rope, frmt: FormatStr,
-               args: varargs[Rope]) =
-  add(r, indentLine(p, ropecg(p.module, frmt, args)))
-
 proc safeLineNm(info: TLineInfo): int =
   result = toLinenumber(info)
   if result < 0: result = 0 # negative numbers are not allowed in #line
@@ -250,7 +246,7 @@ proc genObjectInit(p: BProc, section: TCProcSection, t: PType, a: TLoc,
     if not p.module.compileToCpp:
       while (s.kind == tyObject) and (s.sons[0] != nil):
         add(r, ".Sup")
-        s = skipTypes(s.sons[0], abstractInst)
+        s = skipTypes(s.sons[0], skipPtrs)
     linefmt(p, section, "$1.m_type = $2;$n", r, genTypeInfo(p.module, t))
   of frEmbedded:
     # worst case for performance:
@@ -259,8 +255,7 @@ proc genObjectInit(p: BProc, section: TCProcSection, t: PType, a: TLoc,
 
 type
   TAssignmentFlag = enum
-    needToCopy, needForSubtypeCheck, afDestIsNil, afDestIsNotNil, afSrcIsNil,
-    afSrcIsNotNil, needToKeepAlive
+    needToCopy, afDestIsNil, afDestIsNotNil, afSrcIsNil, afSrcIsNotNil
   TAssignmentFlags = set[TAssignmentFlag]
 
 proc genRefAssign(p: BProc, dest, src: TLoc, flags: TAssignmentFlags)
@@ -328,8 +323,9 @@ proc initLocalVar(p: BProc, v: PSym, immediateAsgn: bool) =
 proc getTemp(p: BProc, t: PType, result: var TLoc; needsInit=false) =
   inc(p.labels)
   result.r = "LOC" & rope(p.labels)
-  addf(p.blocks[0].sections[cpsLocals],
-     "$1 $2;$n", [getTypeDesc(p.module, t), result.r])
+  #addf(p.blocks[0].sections[cpsLocals],
+  #   "$1 $2;$n", [getTypeDesc(p.module, t), result.r])
+  linefmt(p, cpsLocals, "$1 $2;$n", getTypeDesc(p.module, t), result.r)
   result.k = locTemp
   #result.a = - 1
   result.t = t
@@ -338,31 +334,6 @@ proc getTemp(p: BProc, t: PType, result: var TLoc; needsInit=false) =
   result.flags = {}
   constructLoc(p, result, not needsInit)
 
-proc keepAlive(p: BProc, toKeepAlive: TLoc) =
-  when false:
-    # deactivated because of the huge slowdown this causes; GC will take care
-    # of interior pointers instead
-    if optRefcGC notin gGlobalOptions: return
-    var result: TLoc
-    var fid = rope(p.gcFrameId)
-    result.r = "GCFRAME.F" & fid
-    addf(p.gcFrameType, "  $1 F$2;$n",
-        [getTypeDesc(p.module, toKeepAlive.t), fid])
-    inc(p.gcFrameId)
-    result.k = locTemp
-    #result.a = -1
-    result.t = toKeepAlive.t
-    result.s = OnStack
-    result.flags = {}
-
-    if not isComplexValueType(skipTypes(toKeepAlive.t, abstractVarRange)):
-      linefmt(p, cpsStmts, "$1 = $2;$n", rdLoc(result), rdLoc(toKeepAlive))
-    else:
-      useStringh(p.module)
-      linefmt(p, cpsStmts,
-           "memcpy((void*)$1, (NIM_CONST void*)$2, sizeof($3));$n",
-           addrLoc(result), addrLoc(toKeepAlive), rdLoc(result))
-
 proc initGCFrame(p: BProc): Rope =
   if p.gcFrameId > 0: result = "struct {$1} GCFRAME;$n" % [p.gcFrameType]
 
@@ -620,9 +591,6 @@ proc generateHeaders(m: BModule) =
       addf(m.s[cfsHeaders], "#include $1$N", [rope(it.data)])
     it = PStrEntry(it.next)
 
-proc retIsNotVoid(s: PSym): bool =
-  result = (s.typ.sons[0] != nil) and not isInvalidReturnType(s.typ.sons[0])
-
 proc initFrame(p: BProc, procname, filename: Rope): Rope =
   discard cgsym(p.module, "nimFrame")
   if p.maxFrameLen > 0:
@@ -649,6 +617,24 @@ proc closureSetup(p: BProc, prc: PSym) =
   linefmt(p, cpsStmts, "$1 = ($2) ClEnv;$n",
           rdLoc(env.loc), getTypeDesc(p.module, env.typ))
 
+proc easyResultAsgn(n: PNode): PNode =
+  const harmless = {nkConstSection, nkTypeSection, nkEmpty, nkCommentStmt} +
+                    declarativeDefs
+  case n.kind
+  of nkStmtList, nkStmtListExpr:
+    var i = 0
+    while i < n.len and n[i].kind in harmless: inc i
+    if i < n.len: result = easyResultAsgn(n[i])
+  of nkAsgn, nkFastAsgn:
+    if n[0].kind == nkSym and skResult == n[0].sym.kind:
+      incl n.flags, nfPreventCg
+      return n[1]
+  of nkReturnStmt:
+    if n.len > 0:
+      result = easyResultAsgn(n[0])
+      if result != nil: incl n.flags, nfPreventCg
+  else: discard
+
 proc genProcAux(m: BModule, prc: PSym) =
   var p = newProc(prc, m)
   var header = genProcHeader(m, prc)
@@ -660,11 +646,17 @@ proc genProcAux(m: BModule, prc: PSym) =
     var res = prc.ast.sons[resultPos].sym # get result symbol
     if not isInvalidReturnType(prc.typ.sons[0]):
       if sfNoInit in prc.flags: incl(res.flags, sfNoInit)
-      # declare the result symbol:
-      assignLocalVar(p, res)
-      assert(res.loc.r != nil)
+      if sfNoInit in prc.flags and p.module.compileToCpp and (let val = easyResultAsgn(prc.getBody); val != nil):
+        var decl = localVarDecl(p, res)
+        var a: TLoc
+        initLocExprSingleUse(p, val, a)
+        linefmt(p, cpsStmts, "$1 = $2;$n", decl, rdLoc(a))
+      else:
+        # declare the result symbol:
+        assignLocalVar(p, res)
+        assert(res.loc.r != nil)
+        initLocalVar(p, res, immediateAsgn=false)
       returnStmt = rfmt(nil, "\treturn $1;$n", rdLoc(res.loc))
-      initLocalVar(p, res, immediateAsgn=false)
     else:
       fillResult(res)
       assignParam(p, res)
@@ -796,7 +788,7 @@ proc genProc(m: BModule, prc: PSym) =
           genProcAux(generatedHeader, prc)
 
 proc genVarPrototypeAux(m: BModule, sym: PSym) =
-  assert(sfGlobal in sym.flags)
+  #assert(sfGlobal in sym.flags)
   useHeader(m, sym)
   fillLoc(sym.loc, locGlobalVar, sym.typ, mangleName(sym), OnHeap)
   if (lfNoDecl in sym.loc.flags) or containsOrIncl(m.declaredThings, sym.id):
@@ -824,12 +816,12 @@ proc addIntTypes(result: var Rope) {.inline.} =
 proc getCopyright(cfile: string): Rope =
   if optCompileOnly in gGlobalOptions:
     result = ("/* Generated by Nim Compiler v$1 */$N" &
-        "/*   (c) 2015 Andreas Rumpf */$N" &
+        "/*   (c) 2016 Andreas Rumpf */$N" &
         "/* The generated code is subject to the original license. */$N") %
         [rope(VersionAsString)]
   else:
     result = ("/* Generated by Nim Compiler v$1 */$N" &
-        "/*   (c) 2015 Andreas Rumpf */$N" &
+        "/*   (c) 2016 Andreas Rumpf */$N" &
         "/* The generated code is subject to the original license. */$N" &
         "/* Compiled for: $2, $3, $4 */$N" &
         "/* Command for C compiler:$n   $5 */$N") %
@@ -875,10 +867,11 @@ proc genMainProc(m: BModule) =
     MainProcsWithResult =
       MainProcs & "\treturn nim_program_result;$N"
 
-    NimMainBody =
-      "N_CDECL(void, NimMainInner)(void) {$N" &
+    NimMainInner = "N_CDECL(void, NimMainInner)(void) {$N" &
         "$1" &
-      "}$N$N" &
+      "}$N$N"
+      
+    NimMainProc =
       "N_CDECL(void, NimMain)(void) {$N" &
         "\tvoid (*volatile inner)();$N" &
         "\tPreMain();$N" &
@@ -887,6 +880,8 @@ proc genMainProc(m: BModule) =
         "\t(*inner)();$N" &
       "}$N$N"
 
+    NimMainBody = NimMainInner & NimMainProc
+
     PosixNimMain =
       "int cmdCount;$N" &
       "char** cmdLine;$N" &
@@ -914,7 +909,7 @@ proc genMainProc(m: BModule) =
       "                        LPSTR lpCmdLine, int nCmdShow) {$N" &
       MainProcsWithResult & "}$N$N"
 
-    WinNimDllMain = "N_LIB_EXPORT " & NimMainBody
+    WinNimDllMain = NimMainInner & "N_LIB_EXPORT " & NimMainProc
 
     WinCDllMain =
       "BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fwdreason, $N" &
@@ -1020,7 +1015,7 @@ proc genInitCode(m: BModule) =
       var procname = makeCString(m.module.name.s)
       add(prc, initFrame(m.initProc, procname, m.module.info.quotedFilename))
     else:
-      add(prc, ~"\tTFrame F; FR.len = 0;$N")
+      add(prc, ~"\tTFrame FR; FR.len = 0;$N")
 
   add(prc, genSectionStart(cpsInit))
   add(prc, m.preInitProc.s(cpsInit))
diff --git a/compiler/cgmeth.nim b/compiler/cgmeth.nim
index 624c5b183..bcf0b535b 100644
--- a/compiler/cgmeth.nim
+++ b/compiler/cgmeth.nim
@@ -145,15 +145,16 @@ proc fixupDispatcher(meth, disp: PSym) =
         disp.typ.lockLevel = meth.typ.lockLevel
 
 proc methodDef*(s: PSym, fromCache: bool) =
-  var L = len(gMethods)
+  let L = len(gMethods)
   var witness: PSym
   for i in countup(0, L - 1):
-    var disp = gMethods[i].dispatcher
+    let disp = gMethods[i].dispatcher
     case sameMethodBucket(disp, s)
     of Yes:
       add(gMethods[i].methods, s)
       attachDispatcher(s, lastSon(disp.ast))
       fixupDispatcher(s, disp)
+      #echo "fixup ", disp.name.s, " ", disp.id
       when useEffectSystem: checkMethodEffects(disp, s)
       if sfBase in s.flags and gMethods[i].methods[0] != s:
         # already exists due to forwarding definition?
diff --git a/compiler/docgen.nim b/compiler/docgen.nim
index bbbec081a..c220902ff 100644
--- a/compiler/docgen.nim
+++ b/compiler/docgen.nim
@@ -27,6 +27,7 @@ type
     seenSymbols: StringTableRef # avoids duplicate symbol generation for HTML.
     jArray: JsonNode
     types: TStrTable
+    isPureRst: bool
 
   PDoc* = ref TDocumentor ## Alias to type less.
 
@@ -440,11 +441,6 @@ proc genItem(d: PDoc, n, nameNode: PNode, k: TSymKind) =
       dispA(result, "<span class=\"Other\">$1</span>", "\\spanOther{$1}",
             [rope(esc(d.target, literal))])
 
-  if k in routineKinds and nameNode.kind == nkSym:
-    let att = attachToType(d, nameNode.sym)
-    if att != nil:
-      dispA(result, """<span class="attachedType" style="visibility:hidden">$1</span>""", "",
-        [rope esc(d.target, att.name.s)])
   inc(d.id)
   let
     plainNameRope = rope(xmltree.escape(plainName.strip))
@@ -459,25 +455,35 @@ proc genItem(d: PDoc, n, nameNode: PNode, k: TSymKind) =
 
   var seeSrcRope: Rope = nil
   let docItemSeeSrc = getConfigVar("doc.item.seesrc")
-  if docItemSeeSrc.len > 0 and options.docSeeSrcUrl.len > 0:
-    let path = n.info.toFilename.extractFilename.rope
-    let urlRope = ropeFormatNamedVars(options.docSeeSrcUrl,
-      ["path", "line"], [path, rope($n.info.line)])
+  if docItemSeeSrc.len > 0:
+    let cwd = getCurrentDir().canonicalizePath()
+    var path = n.info.toFullPath
+    if path.startsWith(cwd):
+      path = path[cwd.len+1 .. ^1].replace('\\', '/')
+    var commit = getConfigVar("git.commit")
+    if commit.len == 0: commit = "master"
     dispA(seeSrcRope, "$1", "", [ropeFormatNamedVars(docItemSeeSrc,
-        ["path", "line", "url"], [path,
-        rope($n.info.line), urlRope])])
+        ["path", "line", "url", "commit"], [rope path,
+        rope($n.info.line), rope getConfigVar("git.url"),
+        rope commit])])
 
   add(d.section[k], ropeFormatNamedVars(getConfigVar("doc.item"),
     ["name", "header", "desc", "itemID", "header_plain", "itemSym",
       "itemSymOrID", "itemSymEnc", "itemSymOrIDEnc", "seeSrc"],
     [nameRope, result, comm, itemIDRope, plainNameRope, plainSymbolRope,
       symbolOrIdRope, plainSymbolEncRope, symbolOrIdEncRope, seeSrcRope]))
+
+  var attype: Rope
+  if k in routineKinds and nameNode.kind == nkSym:
+    let att = attachToType(d, nameNode.sym)
+    if att != nil:
+      attype = rope esc(d.target, att.name.s)
   add(d.toc[k], ropeFormatNamedVars(getConfigVar("doc.item.toc"),
     ["name", "header", "desc", "itemID", "header_plain", "itemSym",
-      "itemSymOrID", "itemSymEnc", "itemSymOrIDEnc"],
+      "itemSymOrID", "itemSymEnc", "itemSymOrIDEnc", "attype"],
     [rope(getName(d, nameNode, d.splitAfter)), result, comm,
       itemIDRope, plainNameRope, plainSymbolRope, symbolOrIdRope,
-      plainSymbolEncRope, symbolOrIdEncRope]))
+      plainSymbolEncRope, symbolOrIdEncRope, attype]))
 
   # Ironically for types the complexSymbol is *cleaner* than the plainName
   # because it doesn't include object fields or documentation comments. So we
@@ -629,7 +635,9 @@ proc genOutFile(d: PDoc): Rope =
     # Modules get an automatic title for the HTML, but no entry in the index.
     title = "Module " & extractFilename(changeFileExt(d.filename, ""))
 
-  let bodyname = if d.hasToc: "doc.body_toc" else: "doc.body_no_toc"
+  let bodyname = if d.hasToc and not d.isPureRst: "doc.body_toc_group"
+                 elif d.hasToc: "doc.body_toc"
+                 else: "doc.body_no_toc"
   content = ropeFormatNamedVars(getConfigVar(bodyname), ["title",
       "tableofcontents", "moduledesc", "date", "time", "content"],
       [title.rope, toc, d.modDesc, rope(getDateStr()),
@@ -694,6 +702,7 @@ proc commandDoc*() =
 proc commandRstAux(filename, outExt: string) =
   var filen = addFileExt(filename, "txt")
   var d = newDocumentor(filen, options.gConfigVars)
+  d.isPureRst = true
   var rst = parseRst(readFile(filen), filen, 0, 1, d.hasToc,
                      {roSupportRawDirective})
   var modDesc = newStringOfCap(30_000)
diff --git a/compiler/extccomp.nim b/compiler/extccomp.nim
index 2dcfc0226..6f8b0b197 100644
--- a/compiler/extccomp.nim
+++ b/compiler/extccomp.nim
@@ -505,10 +505,6 @@ proc noAbsolutePaths: bool {.inline.} =
   # `optGenMapping` is included here for niminst.
   result = gGlobalOptions * {optGenScript, optGenMapping} != {}
 
-const
-  specialFileA = 42
-  specialFileB = 42
-
 var fileCounter: int
 
 proc add(s: var string, many: openArray[string]) =
diff --git a/compiler/idgen.nim b/compiler/idgen.nim
index 333772705..c6b1a4d07 100644
--- a/compiler/idgen.nim
+++ b/compiler/idgen.nim
@@ -54,6 +54,6 @@ proc loadMaxIds*(project: string) =
     if f.readLine(line):
       var frontEndId = parseInt(line)
       if f.readLine(line):
-        var backEndId = parseInt(line)
+        # var backEndId = parseInt(line)
         gFrontEndId = max(gFrontEndId, frontEndId)
     f.close()
diff --git a/compiler/importer.nim b/compiler/importer.nim
index dd2c4d954..87415733b 100644
--- a/compiler/importer.nim
+++ b/compiler/importer.nim
@@ -163,7 +163,10 @@ proc myImportModule(c: PContext, n: PNode): PSym =
   var f = checkModuleName(n)
   if f != InvalidFileIDX:
     result = importModuleAs(n, gImportModule(c.module, f))
-    if result.info.fileIndex == n.info.fileIndex:
+    # we cannot perform this check reliably because of
+    # test: modules/import_in_config)
+    if result.info.fileIndex == c.module.info.fileIndex and
+        result.info.fileIndex == n.info.fileIndex:
       localError(n.info, errGenerated, "A module cannot import itself")
     if sfDeprecated in result.flags:
       message(n.info, warnDeprecated, result.name.s)
diff --git a/compiler/installer.ini b/compiler/installer.ini
index b802f08f1..acc82002d 100644
--- a/compiler/installer.ini
+++ b/compiler/installer.ini
@@ -50,6 +50,7 @@ Files: "readme.txt;install.txt;contributors.txt;copying.txt"
 Files: "makefile"
 Files: "koch.nim"
 Files: "install_nimble.nims"
+Files: "install_tools.nims"
 
 Files: "icons/nim.ico"
 Files: "icons/nim.rc"
@@ -77,7 +78,8 @@ Files: "lib"
 
 [Other]
 Files: "examples"
-#Files: "dist/nimble"
+Files: "dist/nimble"
+Files: "dist/nimsuggest"
 
 Files: "tests"
 
@@ -87,10 +89,11 @@ Files: "bin/c2nim.exe"
 Files: "bin/nimgrep.exe"
 Files: "bin/nimsuggest.exe"
 Files: "bin/nimble.exe"
+Files: "bin/makelink.exe"
 Files: "bin/*.dll"
 
-Files: "dist/*.dll"
 Files: "koch.exe"
+Files: "finish.exe"
 ; Files: "dist/mingw"
 Files: "start.bat"
 BinPath: r"bin;dist\mingw\bin;dist"
@@ -98,8 +101,8 @@ BinPath: r"bin;dist\mingw\bin;dist"
 ;           Section | dir | zipFile | size hint (in KB) | url | exe start menu entry
 Download: r"Documentation|doc|docs.zip|13824|http://nim-lang.org/download/docs-${version}.zip|overview.html"
 Download: r"C Compiler (MingW)|dist|mingw.zip|82944|http://nim-lang.org/download/${mingw}.zip"
-Download: r"Support DLL's|bin|nim_dlls.zip|479|http://nim-lang.org/download/dlls.zip"
-Download: r"Aporia IDE|dist|aporia.zip|97997|http://nim-lang.org/download/aporia-0.4.0.zip|aporia-0.4.0\bin\aporia.exe"
+Download: r"Support DLLs|bin|nim_dlls.zip|479|http://nim-lang.org/download/dlls.zip"
+Download: r"Aporia Text Editor|dist|aporia.zip|97997|http://nim-lang.org/download/aporia-0.4.0.zip|aporia-0.4.0\bin\aporia.exe"
 ; for now only NSIS supports optional downloads
 
 [UnixBin]
@@ -116,7 +119,6 @@ path = r"c:\Program Files (x86)\Inno Setup 5\iscc.exe"
 flags = "/Q"
 
 [NSIS]
-path = r"c:\Program Files (x86)\NSIS\makensis.exe"
 flags = "/V0"
 
 [C_Compiler]
diff --git a/compiler/jsgen.nim b/compiler/jsgen.nim
index 80bcd2b0e..e7fe8cc27 100644
--- a/compiler/jsgen.nim
+++ b/compiler/jsgen.nim
@@ -512,6 +512,10 @@ proc arith(p: PProc, n: PNode, r: var TCompRes, op: TMagic) =
     arithAux(p, n, r, op, jsOps)
   r.kind = resExpr
 
+proc hasFrameInfo(p: PProc): bool =
+  ({optLineTrace, optStackTrace} * p.options == {optLineTrace, optStackTrace}) and
+      ((p.prc == nil) or not (sfPure in p.prc.flags))
+
 proc genLineDir(p: PProc, n: PNode) =
   let line = toLinenumber(n.info)
   if optLineDir in p.options:
@@ -521,9 +525,7 @@ proc genLineDir(p: PProc, n: PNode) =
       ((p.prc == nil) or sfPure notin p.prc.flags):
     useMagic(p, "endb")
     addf(p.body, "endb($1);$n", [rope(line)])
-  elif ({optLineTrace, optStackTrace} * p.options ==
-      {optLineTrace, optStackTrace}) and
-      ((p.prc == nil) or not (sfPure in p.prc.flags)):
+  elif hasFrameInfo(p):
     addf(p.body, "F.line = $1;$n" | "$$F['line'] = $1;$n", [rope(line)])
 
 proc genWhileStmt(p: PProc, n: PNode) =
@@ -558,10 +560,13 @@ proc genTry(p: PProc, n: PNode, r: var TCompRes) =
   # code to generate:
   #
   #  ++excHandler;
+  #  var tmpFramePtr = framePtr;
   #  try {
   #    stmts;
+  #    --excHandler;
   #  } catch (EXC) {
   #    var prevJSError = lastJSError; lastJSError = EXC;
+  #    framePtr = tmpFramePtr;
   #    --excHandler;
   #    if (e.typ && e.typ == NTI433 || e.typ == NTI2321) {
   #      stmts;
@@ -572,6 +577,7 @@ proc genTry(p: PProc, n: PNode, r: var TCompRes) =
   #    }
   #    lastJSError = prevJSError;
   #  } finally {
+  #    framePtr = tmpFramePtr;
   #    stmts;
   #  }
   genLineDir(p, n)
@@ -584,8 +590,10 @@ proc genTry(p: PProc, n: PNode, r: var TCompRes) =
   var catchBranchesExist = length > 1 and n.sons[i].kind == nkExceptBranch
   if catchBranchesExist and p.target == targetJS:
     add(p.body, "++excHandler;" & tnl)
-  var safePoint = "Tmp$1" % [rope(p.unique)]
-  if optStackTrace in p.options: add(p.body, "framePtr = F;" & tnl)
+  var tmpFramePtr = rope"F"
+  if optStackTrace notin p.options:
+    tmpFramePtr = p.getTemp(true)
+    add(p.body, tmpFramePtr & " = framePtr;" & tnl)
   addf(p.body, "try {$n", [])
   if p.target == targetPHP and p.globals == nil:
       p.globals = "global $lastJSError; global $prevJSError;".rope
@@ -595,8 +603,9 @@ proc genTry(p: PProc, n: PNode, r: var TCompRes) =
   var generalCatchBranchExists = false
   let dollar = rope(if p.target == targetJS: "" else: "$")
   if p.target == targetJS and catchBranchesExist:
-    addf(p.body, "} catch (EXC) {$n var prevJSError = lastJSError;$n" &
+    addf(p.body, "--excHandler;$n} catch (EXC) {$n var prevJSError = lastJSError;$n" &
         " lastJSError = EXC;$n --excHandler;$n", [])
+    add(p.body, "framePtr = $1;$n" % [tmpFramePtr])
   elif p.target == targetPHP:
     addf(p.body, "} catch (Exception $$EXC) {$n $$prevJSError = $$lastJSError;$n $$lastJSError = $$EXC;$n", [])
   while i < length and n.sons[i].kind == nkExceptBranch:
@@ -618,8 +627,7 @@ proc genTry(p: PProc, n: PNode, r: var TCompRes) =
         addf(orExpr, "isObj($2lastJSError.m_type, $1)",
              [genTypeInfo(p, n.sons[i].sons[j].typ), dollar])
       if i > 1: add(p.body, "else ")
-      addf(p.body, "if ($3lastJSError && ($2)) {$n",
-        [safePoint, orExpr, dollar])
+      addf(p.body, "if ($1lastJSError && ($2)) {$n", [dollar, orExpr])
       gen(p, n.sons[i].sons[blen - 1], a)
       moveInto(p, a, r)
       addf(p.body, "}$n", [])
@@ -631,6 +639,7 @@ proc genTry(p: PProc, n: PNode, r: var TCompRes) =
     addf(p.body, "$1lastJSError = $1prevJSError;$n", [dollar])
   if p.target == targetJS:
     add(p.body, "} finally {" & tnl)
+    add(p.body, "framePtr = $1;$n" % [tmpFramePtr])
   if p.target == targetPHP:
     # XXX ugly hack for PHP codegen
     add(p.body, "}" & tnl)
@@ -1355,7 +1364,7 @@ proc createObjInitList(p: PProc, typ: PType, excludedFieldIDs: IntSet, output: v
     if output.len > 0: output.add(", ")
     addf(output, "m_type: $1" | "'m_type' => $#", [genTypeInfo(p, t)])
   while t != nil:
-    createRecordVarAux(p, t.n, excludedFieldIDs, output)
+    createRecordVarAux(p, t.skipTypes(skipPtrs).n, excludedFieldIDs, output)
     t = t.sons[0]
 
 proc arrayTypeForElemType(typ: PType): string =
@@ -1462,13 +1471,21 @@ proc genVarInit(p: PProc, v: PSym, n: PNode) =
         useMagic(p, "nimCopy")
         s = "nimCopy(null, $1, $2)" % [a.res, genTypeInfo(p, n.typ)]
     of etyBaseIndex:
-      if (a.typ != etyBaseIndex): internalError(n.info, "genVarInit")
-      if {sfAddrTaken, sfGlobal} * v.flags != {}:
-        addf(p.body, "var $1 = [$2, $3];$n",
-            [v.loc.r, a.address, a.res])
+      let targetBaseIndex = {sfAddrTaken, sfGlobal} * v.flags == {}
+      if a.typ == etyBaseIndex:
+        if targetBaseIndex:
+          addf(p.body, "var $1 = $2, $1_Idx = $3;$n", [
+              v.loc.r, a.address, a.res])
+        else:
+          addf(p.body, "var $1 = [$2, $3];$n",
+              [v.loc.r, a.address, a.res])
       else:
-        addf(p.body, "var $1 = $2; var $1_Idx = $3;$n", [
-             v.loc.r, a.address, a.res])
+        if targetBaseIndex:
+          let tmp = p.getTemp
+          addf(p.body, "var $1 = $2, $3 = $1[0], $3_Idx = $1[1];$n",
+              [tmp, a.res, v.loc.r])
+        else:
+          addf(p.body, "var $1 = $2;$n", [v.loc.r, a.res])
       return
     else:
       s = a.res
@@ -1918,10 +1935,10 @@ proc frameCreate(p: PProc; procname, filename: Rope): Rope =
             procname, filename]
 
 proc frameDestroy(p: PProc): Rope =
-  result = rope(("framePtr = framePtr.prev;" | "$framePtr = $framePtr['prev'];") & tnl)
+  result = rope(("framePtr = F.prev;" | "$framePtr = $F['prev'];") & tnl)
 
 proc genProcBody(p: PProc, prc: PSym): Rope =
-  if optStackTrace in prc.options:
+  if hasFrameInfo(p):
     result = frameCreate(p,
               makeJSString(prc.owner.name.s & '.' & prc.name.s),
               makeJSString(toFilename(prc.info)))
@@ -1935,7 +1952,7 @@ proc genProcBody(p: PProc, prc: PSym): Rope =
   if prc.typ.callConv == ccSysCall and p.target == targetJS:
     result = ("try {$n$1} catch (e) {$n" &
       " alert(\"Unhandled exception:\\n\" + e.message + \"\\n\"$n}") % [result]
-  if optStackTrace in prc.options:
+  if hasFrameInfo(p):
     add(result, frameDestroy(p))
 
 proc genProc(oldProc: PProc, prc: PSym): Rope =
diff --git a/compiler/jstypes.nim b/compiler/jstypes.nim
index cf1679ee4..0aaf93579 100644
--- a/compiler/jstypes.nim
+++ b/compiler/jstypes.nim
@@ -76,7 +76,7 @@ proc genObjectInfo(p: PProc, typ: PType, name: Rope) =
   addf(p.g.typeInfo, "$1.node = NNI$2;$n", [name, rope(typ.id)])
   if (typ.kind == tyObject) and (typ.sons[0] != nil):
     addf(p.g.typeInfo, "$1.base = $2;$n",
-         [name, genTypeInfo(p, typ.sons[0])])
+         [name, genTypeInfo(p, typ.sons[0].skipTypes(skipPtrs))])
 
 proc genTupleFields(p: PProc, typ: PType): Rope =
   var s: Rope = nil
diff --git a/compiler/lambdalifting.nim b/compiler/lambdalifting.nim
index 753602c80..36ad2e0a6 100644
--- a/compiler/lambdalifting.nim
+++ b/compiler/lambdalifting.nim
@@ -226,8 +226,14 @@ proc interestingIterVar(s: PSym): bool {.inline.} =
 template isIterator*(owner: PSym): bool =
   owner.kind == skIterator and owner.typ.callConv == ccClosure
 
+proc liftingHarmful(owner: PSym): bool {.inline.} =
+  ## lambda lifting can be harmful for JS-like code generators.
+  let isCompileTime = sfCompileTime in owner.flags or owner.kind == skMacro
+  result = gCmd in {cmdCompileToPHP, cmdCompileToJS} and not isCompileTime
+
 proc liftIterSym*(n: PNode; owner: PSym): PNode =
   # transforms  (iter)  to  (let env = newClosure[iter](); (iter, env))
+  if liftingHarmful(owner): return n
   let iter = n.sym
   assert iter.isIterator
 
@@ -838,6 +844,7 @@ proc liftForLoop*(body: PNode; owner: PSym): PNode =
         nkBreakState(cl.state)
         ...
     """
+  if liftingHarmful(owner): return body
   var L = body.len
   if not (body.kind == nkForStmt and body[L-2].kind in nkCallKinds):
     localError(body.info, "ignored invalid for loop")
diff --git a/compiler/lexer.nim b/compiler/lexer.nim
index 0eee5004e..9c513034b 100644
--- a/compiler/lexer.nim
+++ b/compiler/lexer.nim
@@ -211,9 +211,6 @@ proc closeLexer*(lex: var TLexer) =
   inc(gLinesCompiled, lex.lineNumber)
   closeBaseLexer(lex)
 
-proc getColumn(L: TLexer): int =
-  result = getColNumber(L, L.bufpos)
-
 proc getLineInfo(L: TLexer): TLineInfo =
   result = newLineInfo(L.fileIdx, L.lineNumber, getColNumber(L, L.bufpos))
 
@@ -237,12 +234,6 @@ proc lexMessagePos(L: var TLexer, msg: TMsgKind, pos: int, arg = "") =
 proc matchTwoChars(L: TLexer, first: char, second: set[char]): bool =
   result = (L.buf[L.bufpos] == first) and (L.buf[L.bufpos + 1] in second)
 
-proc isFloatLiteral(s: string): bool =
-  for i in countup(0, len(s) - 1):
-    if s[i] in {'.', 'e', 'E'}:
-      return true
-  result = false
-
 {.push overflowChecks: off.}
 # We need to parse the largest uint literal without overflow checks
 proc unsafeParseUInt(s: string, b: var BiggestInt, start = 0): int =
diff --git a/compiler/lowerings.nim b/compiler/lowerings.nim
index 36eb24653..9db4383f6 100644
--- a/compiler/lowerings.nim
+++ b/compiler/lowerings.nim
@@ -172,7 +172,7 @@ proc indirectAccess*(a: PNode, b: string, info: TLineInfo): PNode =
     if field != nil: break
     t = t.sons[0]
     if t == nil: break
-    t = t.skipTypes(abstractInst)
+    t = t.skipTypes(skipPtrs)
   #if field == nil:
   #  echo "FIELD ", b
   #  debug deref.typ
@@ -193,7 +193,7 @@ proc getFieldFromObj*(t: PType; v: PSym): PSym =
     if result != nil: break
     t = t.sons[0]
     if t == nil: break
-    t = t.skipTypes(abstractInst)
+    t = t.skipTypes(skipPtrs)
 
 proc indirectAccess*(a: PNode, b: PSym, info: TLineInfo): PNode =
   # returns a[].b as a node
diff --git a/compiler/modules.nim b/compiler/modules.nim
index 9120bd1b6..711fb6aa4 100644
--- a/compiler/modules.nim
+++ b/compiler/modules.nim
@@ -38,9 +38,6 @@ proc getModule*(fileIdx: int32): PSym =
   if fileIdx >= 0 and fileIdx < gCompiledModules.len:
     result = gCompiledModules[fileIdx]
 
-template hash(x: PSym): untyped =
-  gMemCacheData[x.position].hash
-
 proc hashChanged(fileIdx: int32): bool =
   internalAssert fileIdx >= 0 and fileIdx < gMemCacheData.len
 
@@ -189,14 +186,11 @@ proc compileModule*(fileIdx: int32, flags: TSymFlags): PSym =
         return
     else:
       result.id = getID()
-    if sfMainModule in flags and gProjectIsStdin:
-      processModule(result, llStreamOpen(stdin), rd)
-    else:
-      processModule(result, nil, rd)
+    let validFile = processModule(result, if sfMainModule in flags and gProjectIsStdin: llStreamOpen(stdin) else: nil, rd)
     if optCaasEnabled in gGlobalOptions:
       gMemCacheData[fileIdx].compiledAt = gLastCmdTime
       gMemCacheData[fileIdx].needsRecompile = Recompiled
-      doHash fileIdx
+      if validFile: doHash fileIdx
   else:
     if checkDepMem(fileIdx) == Yes:
       result = compileModule(fileIdx, flags)
@@ -220,12 +214,6 @@ proc includeModule*(s: PSym, fileIdx: int32): PNode {.procvar.} =
     addDep(s, fileIdx)
     doHash(fileIdx)
 
-proc `==^`(a, b: string): bool =
-  try:
-    result = sameFile(a, b)
-  except OSError:
-    result = false
-
 proc compileSystemModule* =
   if magicsys.systemModule == nil:
     systemFileIdx = fileInfoIdx(options.libpath/"system.nim")
diff --git a/compiler/msgs.nim b/compiler/msgs.nim
index 4a9980066..fd0aafccb 100644
--- a/compiler/msgs.nim
+++ b/compiler/msgs.nim
@@ -65,7 +65,7 @@ type
     errPureTypeMismatch, errTypeMismatch, errButExpected, errButExpectedX,
     errAmbiguousCallXYZ, errWrongNumberOfArguments,
     errXCannotBePassedToProcVar,
-    errXCannotBeInParamDecl, errPragmaOnlyInHeaderOfProc, errImplOfXNotAllowed,
+    errXCannotBeInParamDecl, errPragmaOnlyInHeaderOfProcX, errImplOfXNotAllowed,
     errImplOfXexpected, errNoSymbolToBorrowFromFound, errDiscardValueX,
     errInvalidDiscard, errIllegalConvFromXtoY, errCannotBindXTwice,
     errInvalidOrderInArrayConstructor,
@@ -274,7 +274,7 @@ const
     errWrongNumberOfArguments: "wrong number of arguments",
     errXCannotBePassedToProcVar: "\'$1\' cannot be passed to a procvar",
     errXCannotBeInParamDecl: "$1 cannot be declared in parameter declaration",
-    errPragmaOnlyInHeaderOfProc: "pragmas are only allowed in the header of a proc",
+    errPragmaOnlyInHeaderOfProcX: "pragmas are only allowed in the header of a proc; redefinition of $1",
     errImplOfXNotAllowed: "implementation of \'$1\' is not allowed",
     errImplOfXexpected: "implementation of \'$1\' expected",
     errNoSymbolToBorrowFromFound: "no symbol to borrow from found",
@@ -521,7 +521,7 @@ const
                                          hintCodeBegin, hintCodeEnd,
                                          hintSource, hintStackTrace,
                                          hintGCStats},
-    {low(TNoteKind)..high(TNoteKind)} - {hintStackTrace},
+    {low(TNoteKind)..high(TNoteKind)} - {hintStackTrace, warnUninit},
     {low(TNoteKind)..high(TNoteKind)}]
 
 const
@@ -660,8 +660,6 @@ const
   WarningColor = fgYellow
   HintTitle    = "Hint: "
   HintColor    = fgGreen
-  InfoTitle    = "Info: "
-  InfoColor    = fgCyan
 
 proc getInfoContextLen*(): int = return msgContext.len
 proc setInfoContextLen*(L: int) = setLen(msgContext, L)
diff --git a/compiler/nimblecmd.nim b/compiler/nimblecmd.nim
index c6c2ab058..9c5c17287 100644
--- a/compiler/nimblecmd.nim
+++ b/compiler/nimblecmd.nim
@@ -63,18 +63,6 @@ proc addNimblePath(p: string, info: TLineInfo) =
     message(info, hintPath, p)
     lists.prependStr(options.lazyPaths, p)
 
-proc addPathWithNimFiles(p: string, info: TLineInfo) =
-  proc hasNimFile(dir: string): bool =
-    for kind, path in walkDir(dir):
-      if kind == pcFile and path.endsWith(".nim"):
-        result = true
-        break
-  if hasNimFile(p):
-    addNimblePath(p, info)
-  else:
-    for kind, p2 in walkDir(p):
-      if hasNimFile(p2): addNimblePath(p2, info)
-
 proc addPathRec(dir: string, info: TLineInfo) =
   var packages = newStringTable(modeStyleInsensitive)
   var pos = dir.len-1
diff --git a/compiler/nversion.nim b/compiler/nversion.nim
index adeb0fb6d..d69e1e553 100644
--- a/compiler/nversion.nim
+++ b/compiler/nversion.nim
@@ -13,5 +13,5 @@
 const
   MaxSetElements* = 1 shl 16  # (2^16) to support unicode character sets?
   VersionAsString* = system.NimVersion
-  RodFileVersion* = "1215"       # modify this if the rod-format changes!
+  RodFileVersion* = "1221"       # modify this if the rod-format changes!
 
diff --git a/compiler/options.nim b/compiler/options.nim
index a5154cb48..7cf707945 100644
--- a/compiler/options.nim
+++ b/compiler/options.nim
@@ -70,6 +70,12 @@ type                          # please make sure we have under 32 options
     optExcessiveStackTrace    # fully qualified module filenames
 
   TGlobalOptions* = set[TGlobalOption]
+
+const
+  harmlessOptions* = {optForceFullMake, optNoLinking, optReportConceptFailures,
+    optRun, optUseColors, optStdout}
+
+type
   TCommands* = enum           # Nim's commands
                               # **keep binary compatible**
     cmdNone, cmdCompileToC, cmdCompileToCpp, cmdCompileToOC,
diff --git a/compiler/parser.nim b/compiler/parser.nim
index 19ef0960a..40862eb63 100644
--- a/compiler/parser.nim
+++ b/compiler/parser.nim
@@ -340,26 +340,6 @@ proc parseSymbol(p: var TParser, allowNil = false): PNode =
       if not isKeyword(p.tok.tokType): getTok(p)
       result = ast.emptyNode
 
-proc indexExpr(p: var TParser): PNode =
-  #| indexExpr = expr
-  result = parseExpr(p)
-
-proc indexExprList(p: var TParser, first: PNode, k: TNodeKind,
-                   endToken: TTokType): PNode =
-  #| indexExprList = indexExpr ^+ comma
-  result = newNodeP(k, p)
-  addSon(result, first)
-  getTok(p)
-  optInd(p, result)
-  while p.tok.tokType notin {endToken, tkEof}:
-    var a = indexExpr(p)
-    addSon(result, a)
-    if p.tok.tokType != tkComma: break
-    getTok(p)
-    skipComment(p, a)
-  optPar(p)
-  eat(p, endToken)
-
 proc colonOrEquals(p: var TParser, a: PNode): PNode =
   if p.tok.tokType == tkColon:
     result = newNodeP(nkExprColonExpr, p)
diff --git a/compiler/passes.nim b/compiler/passes.nim
index ceb3e2b8a..b7642e3e4 100644
--- a/compiler/passes.nim
+++ b/compiler/passes.nim
@@ -46,12 +46,6 @@ proc makePass*(open: TPassOpen = nil,
   result.close = close
   result.process = process
 
-  # This implements a memory preserving scheme: Top level statements are
-  # processed in a pipeline. The compiler never looks at a whole module
-  # any longer. However, this is simple to change, as new passes may perform
-  # whole program optimizations. For now, we avoid it to save a lot of memory.
-proc processModule*(module: PSym, stream: PLLStream, rd: PRodReader)
-
 # the semantic checker needs these:
 var
   gImportModule*: proc (m: PSym, fileIdx: int32): PSym {.nimcall.}
@@ -160,7 +154,8 @@ proc processImplicits(implicits: seq[string], nodeKind: TNodeKind,
     importStmt.addSon str
     if not processTopLevelStmt(importStmt, a): break
 
-proc processModule(module: PSym, stream: PLLStream, rd: PRodReader) =
+proc processModule*(module: PSym, stream: PLLStream,
+                    rd: PRodReader): bool {.discardable.} =
   var
     p: TParsers
     a: TPassContextArray
@@ -173,7 +168,7 @@ proc processModule(module: PSym, stream: PLLStream, rd: PRodReader) =
       s = llStreamOpen(filename, fmRead)
       if s == nil:
         rawMessage(errCannotOpenFile, filename)
-        return
+        return false
     else:
       s = stream
     while true:
@@ -211,4 +206,4 @@ proc processModule(module: PSym, stream: PLLStream, rd: PRodReader) =
     var n = loadInitSection(rd)
     for i in countup(0, sonsLen(n) - 1): processTopLevelStmtCached(n.sons[i], a)
     closePassesCached(a)
-
+  result = true
diff --git a/compiler/pragmas.nim b/compiler/pragmas.nim
index db5f8e727..f4109b26d 100644
--- a/compiler/pragmas.nim
+++ b/compiler/pragmas.nim
@@ -567,11 +567,13 @@ proc deprecatedStmt(c: PContext; pragma: PNode) =
   for n in pragma:
     if n.kind in {nkExprColonExpr, nkExprEqExpr}:
       let dest = qualifiedLookUp(c, n[1], {checkUndeclared})
+      assert dest != nil
       let src = considerQuotedIdent(n[0])
       let alias = newSym(skAlias, src, dest, n[0].info)
       incl(alias.flags, sfExported)
       if sfCompilerProc in dest.flags: markCompilerProc(alias)
       addInterfaceDecl(c, alias)
+      n.sons[1] = newSymNode(dest)
     else:
       localError(n.info, "key:value pair expected")
 
@@ -749,7 +751,9 @@ proc singlePragma(c: PContext, sym: PSym, n: PNode, i: int,
         noVal(it)
         incl(sym.flags, sfThread)
         incl(sym.flags, sfProcvar)
-        if sym.typ != nil: incl(sym.typ.flags, tfThread)
+        if sym.typ != nil:
+          incl(sym.typ.flags, tfThread)
+          if sym.typ.callConv == ccClosure: sym.typ.callConv = ccDefault
       of wGcSafe:
         noVal(it)
         if sym.kind != skType: incl(sym.flags, sfThread)
diff --git a/compiler/renderer.nim b/compiler/renderer.nim
index 0e733d643..a116a8afe 100644
--- a/compiler/renderer.nim
+++ b/compiler/renderer.nim
@@ -146,12 +146,6 @@ proc put(g: var TSrcGen, kind: TTokType, s: string) =
   else:
     g.pendingWhitespace = s.len
 
-proc putLong(g: var TSrcGen, kind: TTokType, s: string, lineLen: int) =
-  # use this for tokens over multiple lines.
-  addPendingNL(g)
-  addTok(g, kind, s)
-  g.lineLen = lineLen
-
 proc toNimChar(c: char): string =
   case c
   of '\0': result = "\\0"
@@ -264,9 +258,6 @@ proc pushCom(g: var TSrcGen, n: PNode) =
 proc popAllComs(g: var TSrcGen) =
   setLen(g.comStack, 0)
 
-proc popCom(g: var TSrcGen) =
-  setLen(g.comStack, len(g.comStack) - 1)
-
 const
   Space = " "
 
@@ -492,7 +483,7 @@ proc fits(g: TSrcGen, x: int): bool =
 
 type
   TSubFlag = enum
-    rfLongMode, rfNoIndent, rfInConstExpr
+    rfLongMode, rfInConstExpr
   TSubFlags = set[TSubFlag]
   TContext = tuple[spacing: int, flags: TSubFlags]
 
@@ -675,16 +666,6 @@ proc gfor(g: var TSrcGen, n: PNode) =
   gcoms(g)
   gstmts(g, n.sons[length - 1], c)
 
-proc gmacro(g: var TSrcGen, n: PNode) =
-  var c: TContext
-  initContext(c)
-  gsub(g, n.sons[0])
-  putWithSpace(g, tkColon, ":")
-  if longMode(n) or (lsub(n.sons[1]) + g.lineLen > MaxLineLen):
-    incl(c.flags, rfLongMode)
-  gcoms(g)
-  gsons(g, n, c, 1)
-
 proc gcase(g: var TSrcGen, n: PNode) =
   var c: TContext
   initContext(c)
diff --git a/compiler/rodread.nim b/compiler/rodread.nim
index 004b30b41..679e7ba15 100644
--- a/compiler/rodread.nim
+++ b/compiler/rodread.nim
@@ -145,13 +145,7 @@ type
 
   PRodReader* = ref TRodReader
 
-var rodCompilerprocs*: TStrTable
-
-proc handleSymbolFile*(module: PSym): PRodReader
-# global because this is needed by magicsys
-proc loadInitSection*(r: PRodReader): PNode
-
-# implementation
+var rodCompilerprocs*: TStrTable # global because this is needed by magicsys
 
 proc rawLoadStub(s: PSym)
 
@@ -206,7 +200,7 @@ proc decodeNodeLazyBody(r: PRodReader, fInfo: TLineInfo,
       var id = decodeVInt(r.s, r.pos)
       result.typ = rrGetType(r, id, result.info)
     case result.kind
-    of nkCharLit..nkInt64Lit:
+    of nkCharLit..nkUInt64Lit:
       if r.s[r.pos] == '!':
         inc(r.pos)
         result.intVal = decodeVBiggestInt(r.s, r.pos)
@@ -324,6 +318,29 @@ proc decodeType(r: PRodReader, info: TLineInfo): PType =
     result.align = decodeVInt(r.s, r.pos).int16
   else:
     result.align = 2
+
+  if r.s[r.pos] == '\14':
+    inc(r.pos)
+    result.lockLevel = decodeVInt(r.s, r.pos).TLockLevel
+  else:
+    result.lockLevel = UnspecifiedLockLevel
+
+  if r.s[r.pos] == '\15':
+    inc(r.pos)
+    result.destructor = rrGetSym(r, decodeVInt(r.s, r.pos), info)
+  if r.s[r.pos] == '\16':
+    inc(r.pos)
+    result.deepCopy = rrGetSym(r, decodeVInt(r.s, r.pos), info)
+  if r.s[r.pos] == '\17':
+    inc(r.pos)
+    result.assignment = rrGetSym(r, decodeVInt(r.s, r.pos), info)
+  while r.s[r.pos] == '\18':
+    inc(r.pos)
+    let x = decodeVInt(r.s, r.pos)
+    doAssert r.s[r.pos] == '\19'
+    inc(r.pos)
+    let y = rrGetSym(r, decodeVInt(r.s, r.pos), info)
+    result.methods.safeAdd((x, y))
   decodeLoc(r, result.loc, info)
   while r.s[r.pos] == '^':
     inc(r.pos)
@@ -349,6 +366,22 @@ proc decodeLib(r: PRodReader, info: TLineInfo): PLib =
     inc(r.pos)
     result.path = decodeNode(r, info)
 
+proc decodeInstantiations(r: PRodReader; info: TLineInfo;
+                          s: var seq[PInstantiation]) =
+  while r.s[r.pos] == '\15':
+    inc(r.pos)
+    var ii: PInstantiation
+    new ii
+    ii.sym = rrGetSym(r, decodeVInt(r.s, r.pos), info)
+    ii.concreteTypes = @[]
+    while r.s[r.pos] == '\17':
+      inc(r.pos)
+      ii.concreteTypes.add rrGetType(r, decodeVInt(r.s, r.pos), info)
+    if r.s[r.pos] == '\20':
+      inc(r.pos)
+      ii.compilesId = decodeVInt(r.s, r.pos)
+    s.safeAdd ii
+
 proc decodeSym(r: PRodReader, info: TLineInfo): PSym =
   var
     id: int
@@ -423,6 +456,27 @@ proc decodeSym(r: PRodReader, info: TLineInfo): PSym =
   if r.s[r.pos] == '#':
     inc(r.pos)
     result.constraint = decodeNode(r, unknownLineInfo())
+  case result.kind
+  of skType, skGenericParam:
+    while r.s[r.pos] == '\14':
+      inc(r.pos)
+      result.typeInstCache.safeAdd rrGetType(r, decodeVInt(r.s, r.pos), result.info)
+  of routineKinds:
+    decodeInstantiations(r, result.info, result.procInstCache)
+    if r.s[r.pos] == '\16':
+      inc(r.pos)
+      result.gcUnsafetyReason = rrGetSym(r, decodeVInt(r.s, r.pos), result.info)
+  of skModule, skPackage:
+    decodeInstantiations(r, result.info, result.usedGenerics)
+  of skLet, skVar, skField, skForVar:
+    if r.s[r.pos] == '\18':
+      inc(r.pos)
+      result.guard = rrGetSym(r, decodeVInt(r.s, r.pos), result.info)
+    if r.s[r.pos] == '\19':
+      inc(r.pos)
+      result.bitsize = decodeVInt(r.s, r.pos).int16
+  else: discard
+
   if r.s[r.pos] == '(':
     if result.kind in routineKinds:
       result.ast = decodeNodeLazyBody(r, result.info, result)
@@ -566,7 +620,8 @@ proc processRodFile(r: PRodReader, hash: SecureHash) =
     of "GOPTIONS":
       inc(r.pos)              # skip ':'
       var dep = cast[TGlobalOptions](int32(decodeVInt(r.s, r.pos)))
-      if gGlobalOptions != dep: r.reason = rrOptions
+      if gGlobalOptions-harmlessOptions != dep-harmlessOptions:
+        r.reason = rrOptions
     of "CMD":
       inc(r.pos)              # skip ':'
       var dep = cast[TCommands](int32(decodeVInt(r.s, r.pos)))
@@ -580,14 +635,14 @@ proc processRodFile(r: PRodReader, hash: SecureHash) =
         if not condsyms.isDefined(getIdent(w)):
           r.reason = rrDefines #MessageOut('not defined, but should: ' + w);
         if r.s[r.pos] == ' ': inc(r.pos)
-      if (d != countDefinedSymbols()): r.reason = rrDefines
+      if d != countDefinedSymbols(): r.reason = rrDefines
     of "FILES":
       inc(r.pos, 2)           # skip "(\10"
       inc(r.line)
       while r.s[r.pos] != ')':
-        let relativePath = decodeStr(r.s, r.pos)
-        let resolvedPath = relativePath.findModule(r.origFile)
-        let finalPath = if resolvedPath.len > 0: resolvedPath else: relativePath
+        let finalPath = decodeStr(r.s, r.pos)
+        #let resolvedPath = relativePath.findModule(r.origFile)
+        #let finalPath = if resolvedPath.len > 0: resolvedPath else: relativePath
         r.files.add(finalPath.fileInfoIdx)
         inc(r.pos)            # skip #10
         inc(r.line)
@@ -683,8 +738,11 @@ proc newRodReader(modfilename: string, hash: SecureHash,
     if version != RodFileVersion:
       # since ROD files are only for caching, no backwards compatibility is
       # needed
+      #echo "expected version ", version, " ", RodFileVersion
+      result.memfile.close
       result = nil
   else:
+    result.memfile.close
     result = nil
 
 proc rrGetType(r: PRodReader, id: int, info: TLineInfo): PType =
@@ -762,7 +820,7 @@ proc rrGetSym(r: PRodReader, id: int, info: TLineInfo): PSym =
       result = decodeSymSafePos(r, d, info)
   if result != nil and result.kind == skStub: rawLoadStub(result)
 
-proc loadInitSection(r: PRodReader): PNode =
+proc loadInitSection*(r: PRodReader): PNode =
   if r.initIdx == 0 or r.dataIdx == 0: internalError("loadInitSection")
   var oldPos = r.pos
   r.pos = r.initIdx
@@ -818,9 +876,8 @@ proc checkDep(fileIdx: int32): TReasonForRecompile =
   var hash = getHash(fileIdx)
   gMods[fileIdx].reason = rrNone  # we need to set it here to avoid cycles
   result = rrNone
-  var r: PRodReader = nil
   var rodfile = toGeneratedFile(filename.withPackageName, RodExt)
-  r = newRodReader(rodfile, hash, fileIdx)
+  var r = newRodReader(rodfile, hash, fileIdx)
   if r == nil:
     result = (if existsFile(rodfile): rrRodInvalid else: rrRodDoesNotExist)
   else:
@@ -847,7 +904,7 @@ proc checkDep(fileIdx: int32): TReasonForRecompile =
   gMods[fileIdx].rd = r
   gMods[fileIdx].reason = result  # now we know better
 
-proc handleSymbolFile(module: PSym): PRodReader =
+proc handleSymbolFile*(module: PSym): PRodReader =
   let fileIdx = module.fileIdx
   if optSymbolFiles notin gGlobalOptions:
     module.id = getID()
@@ -923,7 +980,7 @@ proc writeNode(f: File; n: PNode) =
       f.write('^')
       f.write(n.typ.id)
     case n.kind
-    of nkCharLit..nkInt64Lit:
+    of nkCharLit..nkUInt64Lit:
       if n.intVal != 0:
         f.write('!')
         f.write(n.intVal)
diff --git a/compiler/rodwrite.nim b/compiler/rodwrite.nim
index d48a9ba40..addbdade6 100644
--- a/compiler/rodwrite.nim
+++ b/compiler/rodwrite.nim
@@ -16,8 +16,6 @@ import
   condsyms, ropes, idents, securehash, rodread, passes, importer, idgen,
   rodutils
 
-# implementation
-
 type
   TRodWriter = object of TPassContext
     module: PSym
@@ -39,13 +37,6 @@ type
 
   PRodWriter = ref TRodWriter
 
-proc newRodWriter(hash: SecureHash, module: PSym): PRodWriter
-proc addModDep(w: PRodWriter, dep: string)
-proc addInclDep(w: PRodWriter, dep: string)
-proc addInterfaceSym(w: PRodWriter, s: PSym)
-proc addStmt(w: PRodWriter, n: PNode)
-proc writeRod(w: PRodWriter)
-
 proc getDefines(): string =
   result = ""
   for d in definedSymbolNames():
@@ -83,19 +74,20 @@ proc newRodWriter(hash: SecureHash, module: PSym): PRodWriter =
   result.converters = ""
   result.methods = ""
   result.init = ""
-  result.origFile = module.info.toFilename
+  result.origFile = module.info.toFullPath
   result.data = newStringOfCap(12_000)
 
-proc addModDep(w: PRodWriter, dep: string) =
+proc addModDep(w: PRodWriter, dep: string; info: TLineInfo) =
   if w.modDeps.len != 0: add(w.modDeps, ' ')
-  encodeVInt(fileIdx(w, dep), w.modDeps)
+  let resolved = dep.findModule(info.toFullPath)
+  encodeVInt(fileIdx(w, resolved), w.modDeps)
 
 const
   rodNL = "\x0A"
 
-proc addInclDep(w: PRodWriter, dep: string) =
-  var resolved = dep.findModule(w.module.info.toFullPath)
-  encodeVInt(fileIdx(w, dep), w.inclDeps)
+proc addInclDep(w: PRodWriter, dep: string; info: TLineInfo) =
+  let resolved = dep.findModule(info.toFullPath)
+  encodeVInt(fileIdx(w, resolved), w.inclDeps)
   add(w.inclDeps, " ")
   encodeStr($secureHashFile(resolved), w.inclDeps)
   add(w.inclDeps, rodNL)
@@ -108,6 +100,10 @@ proc pushType(w: PRodWriter, t: PType) =
 proc pushSym(w: PRodWriter, s: PSym) =
   # check so that the stack does not grow too large:
   if iiTableGet(w.index.tab, s.id) == InvalidKey:
+    when false:
+      if s.kind == skMethod:
+        echo "encoding ", s.id, " ", s.name.s
+        writeStackTrace()
     w.sstack.add(s)
 
 proc encodeNode(w: PRodWriter, fInfo: TLineInfo, n: PNode,
@@ -127,7 +123,7 @@ proc encodeNode(w: PRodWriter, fInfo: TLineInfo, n: PNode,
     result.add(',')
     encodeVInt(n.info.line, result)
     result.add(',')
-    encodeVInt(fileIdx(w, toFilename(n.info)), result)
+    encodeVInt(fileIdx(w, toFullPath(n.info)), result)
   elif fInfo.line != n.info.line:
     result.add('?')
     encodeVInt(n.info.col, result)
@@ -147,7 +143,7 @@ proc encodeNode(w: PRodWriter, fInfo: TLineInfo, n: PNode,
     encodeVInt(n.typ.id, result)
     pushType(w, n.typ)
   case n.kind
-  of nkCharLit..nkInt64Lit:
+  of nkCharLit..nkUInt64Lit:
     if n.intVal != 0:
       result.add('!')
       encodeVBiggestInt(n.intVal, result)
@@ -229,6 +225,27 @@ proc encodeType(w: PRodWriter, t: PType, result: var string) =
   if t.align != 2:
     add(result, '=')
     encodeVInt(t.align, result)
+  if t.lockLevel.ord != UnspecifiedLockLevel.ord:
+    add(result, '\14')
+    encodeVInt(t.lockLevel.int16, result)
+  if t.destructor != nil and t.destructor.id != 0:
+    add(result, '\15')
+    encodeVInt(t.destructor.id, result)
+    pushSym(w, t.destructor)
+  if t.deepCopy != nil:
+    add(result, '\16')
+    encodeVInt(t.deepcopy.id, result)
+    pushSym(w, t.deepcopy)
+  if t.assignment != nil:
+    add(result, '\17')
+    encodeVInt(t.assignment.id, result)
+    pushSym(w, t.assignment)
+  for i, s in items(t.methods):
+    add(result, '\18')
+    encodeVInt(i, result)
+    add(result, '\19')
+    encodeVInt(s.id, result)
+    pushSym(w, s)
   encodeLoc(w, t.loc, result)
   for i in countup(0, sonsLen(t) - 1):
     if t.sons[i] == nil:
@@ -246,6 +263,19 @@ proc encodeLib(w: PRodWriter, lib: PLib, info: TLineInfo, result: var string) =
   add(result, '|')
   encodeNode(w, info, lib.path, result)
 
+proc encodeInstantiations(w: PRodWriter; s: seq[PInstantiation];
+                          result: var string) =
+  for t in s:
+    result.add('\15')
+    encodeVInt(t.sym.id, result)
+    pushSym(w, t.sym)
+    for tt in t.concreteTypes:
+      result.add('\17')
+      encodeVInt(tt.id, result)
+      pushType(w, tt)
+    result.add('\20')
+    encodeVInt(t.compilesId, result)
+
 proc encodeSym(w: PRodWriter, s: PSym, result: var string) =
   if s == nil:
     # nil nodes have to be stored too:
@@ -266,7 +296,7 @@ proc encodeSym(w: PRodWriter, s: PSym, result: var string) =
   result.add(',')
   if s.info.line != -1'i16: encodeVInt(s.info.line, result)
   result.add(',')
-  encodeVInt(fileIdx(w, toFilename(s.info)), result)
+  encodeVInt(fileIdx(w, toFullPath(s.info)), result)
   if s.owner != nil:
     result.add('*')
     encodeVInt(s.owner.id, result)
@@ -291,6 +321,31 @@ proc encodeSym(w: PRodWriter, s: PSym, result: var string) =
   if s.constraint != nil:
     add(result, '#')
     encodeNode(w, unknownLineInfo(), s.constraint, result)
+  case s.kind
+  of skType, skGenericParam:
+    for t in s.typeInstCache:
+      result.add('\14')
+      encodeVInt(t.id, result)
+      pushType(w, t)
+  of routineKinds:
+    encodeInstantiations(w, s.procInstCache, result)
+    if s.gcUnsafetyReason != nil:
+      result.add('\16')
+      encodeVInt(s.gcUnsafetyReason.id, result)
+      pushSym(w, s.gcUnsafetyReason)
+  of skModule, skPackage:
+    encodeInstantiations(w, s.usedGenerics, result)
+    # we don't serialize:
+    #tab*: TStrTable         # interface table for modules
+  of skLet, skVar, skField, skForVar:
+    if s.guard != nil:
+      result.add('\18')
+      encodeVInt(s.guard.id, result)
+      pushSym(w, s.guard)
+    if s.bitsize != 0:
+      result.add('\19')
+      encodeVInt(s.bitsize, result)
+  else: discard
   # lazy loading will soon reload the ast lazily, so the ast needs to be
   # the last entry of a symbol:
   if s.ast != nil:
@@ -298,16 +353,6 @@ proc encodeSym(w: PRodWriter, s: PSym, result: var string) =
     # it is not necessary, but Nim's heavy compile-time evaluation features
     # make that unfeasible nowadays:
     encodeNode(w, s.info, s.ast, result)
-    when false:
-      var codeAst: PNode = nil
-      if not astNeeded(s):
-        codeAst = s.ast.sons[codePos]
-        # ugly hack to not store the AST:
-        s.ast.sons[codePos] = ast.emptyNode
-      encodeNode(w, s.info, s.ast, result)
-      if codeAst != nil:
-        # resore the AST:
-        s.ast.sons[codePos] = codeAst
 
 proc addToIndex(w: var TIndex, key, val: int) =
   if key - w.lastIdxKey == 1:
@@ -562,13 +607,15 @@ proc process(c: PPassContext, n: PNode): PNode =
       #            addInterfaceSym(w, a.sons[j].sym);
       #        end
   of nkImportStmt:
-    for i in countup(0, sonsLen(n) - 1): addModDep(w, getModuleName(n.sons[i]))
+    for i in countup(0, sonsLen(n) - 1):
+      addModDep(w, getModuleName(n.sons[i]), n.info)
     addStmt(w, n)
-  of nkFromStmt:
-    addModDep(w, getModuleName(n.sons[0]))
+  of nkFromStmt, nkImportExceptStmt:
+    addModDep(w, getModuleName(n.sons[0]), n.info)
     addStmt(w, n)
   of nkIncludeStmt:
-    for i in countup(0, sonsLen(n) - 1): addInclDep(w, getModuleName(n.sons[i]))
+    for i in countup(0, sonsLen(n) - 1):
+      addInclDep(w, getModuleName(n.sons[i]), n.info)
   of nkPragma:
     addStmt(w, n)
   else:
diff --git a/compiler/ropes.nim b/compiler/ropes.nim
index bfae7aaa4..d84b59f78 100644
--- a/compiler/ropes.nim
+++ b/compiler/ropes.nim
@@ -310,15 +310,19 @@ proc equalsFile*(r: Rope, f: File): bool =
     buf: array[bufSize, char]
     bpos = buf.len
     blen = buf.len
+    btotal = 0
+    rtotal = 0
 
   for s in leaves(r):
     var spos = 0
     let slen = s.len
+    rtotal += slen
     while spos < slen:
       if bpos == blen:
         # Read more data
         bpos = 0
         blen = readBuffer(f, addr(buf[0]), buf.len)
+        btotal += blen
         if blen == 0:  # no more data in file
           result = false
           return
@@ -330,7 +334,8 @@ proc equalsFile*(r: Rope, f: File): bool =
       spos += n
       bpos += n
 
-  result = readBuffer(f, addr(buf[0]), 1) == 0  # check that we've read all
+  result = readBuffer(f, addr(buf[0]), 1) == 0 and
+      btotal == rtotal # check that we've read all
 
 proc equalsFile*(r: Rope, filename: string): bool =
   ## returns true if the contents of the file `f` equal `r`. If `f` does not
diff --git a/compiler/scriptconfig.nim b/compiler/scriptconfig.nim
index 8b2653bc9..f04cef0ee 100644
--- a/compiler/scriptconfig.nim
+++ b/compiler/scriptconfig.nim
@@ -43,6 +43,7 @@ proc setupVM*(module: PSym; scriptName: string): PEvalContext =
   template cbos(name, body) {.dirty.} =
     result.registerCallback "stdlib.system." & astToStr(name),
       proc (a: VmArgs) =
+        errorMsg = nil
         try:
           body
         except OSError:
@@ -150,7 +151,7 @@ proc runNimScript*(scriptName: string; freshDefines=true) =
   vm.globalCtx = setupVM(m, scriptName)
 
   compileSystemModule()
-  processModule(m, llStreamOpen(scriptName, fmRead), nil)
+  discard processModule(m, llStreamOpen(scriptName, fmRead), nil)
 
   # ensure we load 'system.nim' again for the real non-config stuff!
   resetAllModulesHard()
diff --git a/compiler/sem.nim b/compiler/sem.nim
index 7db4ae47e..7768833b3 100644
--- a/compiler/sem.nim
+++ b/compiler/sem.nim
@@ -39,7 +39,6 @@ proc semStmt(c: PContext, n: PNode): PNode
 proc semParamList(c: PContext, n, genericParams: PNode, s: PSym)
 proc addParams(c: PContext, n: PNode, kind: TSymKind)
 proc maybeAddResult(c: PContext, s: PSym, n: PNode)
-proc instGenericContainer(c: PContext, n: PNode, header: PType): PType
 proc tryExpr(c: PContext, n: PNode, flags: TExprFlags = {}): PNode
 proc activate(c: PContext, n: PNode)
 proc semQuoteAst(c: PContext, n: PNode): PNode
@@ -47,6 +46,10 @@ proc finishMethod(c: PContext, s: PSym)
 
 proc indexTypesMatch(c: PContext, f, a: PType, arg: PNode): PNode
 
+proc isArrayConstr(n: PNode): bool {.inline.} =
+  result = n.kind == nkBracket and
+    n.typ.skipTypes(abstractInst).kind == tyArray
+
 template semIdeForTemplateOrGenericCheck(n, requiresCheck) =
   # we check quickly if the node is where the cursor is
   when defined(nimsuggest):
@@ -187,7 +190,6 @@ proc semIdentVis(c: PContext, kind: TSymKind, n: PNode,
   # identifier with visibility
 proc semIdentWithPragma(c: PContext, kind: TSymKind, n: PNode,
                         allowed: TSymFlags): PSym
-proc semStmtScope(c: PContext, n: PNode): PNode
 
 proc typeAllowedCheck(info: TLineInfo; typ: PType; kind: TSymKind) =
   let t = typeAllowed(typ, kind)
@@ -252,7 +254,7 @@ proc fixupTypeAfterEval(c: PContext, evaluated, eOrig: PNode): PNode =
       result = arg
       # for 'tcnstseq' we support [] to become 'seq'
       if eOrig.typ.skipTypes(abstractInst).kind == tySequence and
-         arg.typ.skipTypes(abstractInst).kind == tyArrayConstr:
+         isArrayConstr(arg):
         arg.typ = eOrig.typ
 
 proc tryConstExpr(c: PContext, n: PNode): PNode =
@@ -445,6 +447,8 @@ proc isImportSystemStmt(n: PNode): bool =
   else: discard
 
 proc semStmtAndGenerateGenerics(c: PContext, n: PNode): PNode =
+  if n.kind == nkDefer:
+    localError(n.info, "defer statement not supported at top level")
   if c.topStmts == 0 and not isImportSystemStmt(n):
     if sfSystemModule notin c.module.flags and
         n.kind notin {nkEmpty, nkCommentStmt}:
diff --git a/compiler/semasgn.nim b/compiler/semasgn.nim
index 9702128ba..2e925e386 100644
--- a/compiler/semasgn.nim
+++ b/compiler/semasgn.nim
@@ -203,7 +203,8 @@ proc liftBodyAux(c: var TLiftCtx; t: PType; body, x, y: PNode) =
       defaultOp(c, t, body, x, y)
   of tyObject, tyDistinct:
     if not considerOverloadedOp(c, t, body, x, y):
-      if t.sons[0] != nil: liftBodyAux(c, t.sons[0], body, x, y)
+      if t.sons[0] != nil:
+        liftBodyAux(c, t.sons[0].skipTypes(skipPtrs), body, x, y)
       if t.kind == tyObject: liftBodyObj(c, t.n, body, x, y)
   of tyTuple:
     liftBodyTup(c, t, body, x, y)
diff --git a/compiler/semcall.nim b/compiler/semcall.nim
index 97209167d..3037a6ecc 100644
--- a/compiler/semcall.nim
+++ b/compiler/semcall.nim
@@ -34,6 +34,22 @@ proc sameMethodDispatcher(a, b: PSym): bool =
 
 proc determineType(c: PContext, s: PSym)
 
+proc initCandidateSymbols(c: PContext, headSymbol: PNode,
+                       initialBinding: PNode,
+                       filter: TSymKinds,
+                       best, alt: var TCandidate,
+                       o: var TOverloadIter): seq[tuple[s: PSym, scope: int]] =
+  result = @[]
+  var symx = initOverloadIter(o, c, headSymbol)
+  while symx != nil:
+    if symx.kind in filter:
+      result.add((symx, o.lastOverloadScope))
+      symx = nextOverloadIter(o, c, headSymbol)
+  if result.len > 0:
+    initCandidate(c, best, result[0].s, initialBinding, result[0].scope)
+    initCandidate(c, alt, result[0].s, initialBinding, result[0].scope)
+    best.state = csNoMatch
+
 proc pickBestCandidate(c: PContext, headSymbol: PNode,
                        n, orig: PNode,
                        initialBinding: PNode,
@@ -41,66 +57,62 @@ proc pickBestCandidate(c: PContext, headSymbol: PNode,
                        best, alt: var TCandidate,
                        errors: var CandidateErrors) =
   var o: TOverloadIter
-  # thanks to the lazy semchecking for operands, we need to iterate over the
-  # symbol table *before* any call to 'initCandidate' which might invoke
-  # semExpr which might modify the symbol table in cases like
-  # 'init(a, 1, (var b = new(Type2); b))'.
-  var symx = initOverloadIter(o, c, headSymbol)
-  let symScope = o.lastOverloadScope
-
-  var syms: seq[tuple[a: PSym, b: int]] = @[]
-  while symx != nil:
-    if symx.kind in filter:
-      syms.add((symx, o.lastOverloadScope))
-    symx = nextOverloadIter(o, c, headSymbol)
-  if syms.len == 0:
-    when false:
-      if skIterator notin filter:
-        # also try iterators, but these are 2nd class:
-        symx = initOverloadIter(o, c, headSymbol)
-        while symx != nil:
-          if symx.kind == skIterator:
-            syms.add((symx, 100))
-          symx = nextOverloadIter(o, c, headSymbol)
-        if syms.len == 0: return
+  var sym = initOverloadIter(o, c, headSymbol)
+  var scope = o.lastOverloadScope
+  # Thanks to the lazy semchecking for operands, we need to check whether
+  # 'initCandidate' modifies the symbol table (via semExpr).
+  # This can occur in cases like 'init(a, 1, (var b = new(Type2); b))'
+  let counterInitial = c.currentScope.symbols.counter
+  var syms: seq[tuple[s: PSym, scope: int]]
+  var nextSymIndex = 0
+  while sym != nil:
+    if sym.kind in filter:
+      # Initialise 'best' and 'alt' with the first available symbol
+      initCandidate(c, best, sym, initialBinding, scope)
+      initCandidate(c, alt, sym, initialBinding, scope)
+      best.state = csNoMatch
+      break
     else:
-      return
-
+      sym = nextOverloadIter(o, c, headSymbol)
+      scope = o.lastOverloadScope
   var z: TCandidate
-  initCandidate(c, best, syms[0][0], initialBinding, symScope)
-  initCandidate(c, alt, syms[0][0], initialBinding, symScope)
-  best.state = csNoMatch
-
-  for i in 0 .. <syms.len:
-    let sym = syms[i][0]
+  while sym != nil:
+    if sym.kind notin filter:
+      sym = nextOverloadIter(o, c, headSymbol)
+      scope = o.lastOverloadScope
+      continue
     determineType(c, sym)
-    initCandidate(c, z, sym, initialBinding, syms[i][1])
-
-    #if sym.name.s == "*" and (n.info ?? "temp5.nim") and n.info.line == 140:
-    #  gDebug = true
-    matches(c, n, orig, z)
-    if errors != nil:
-      errors.safeAdd((sym, int z.mutabilityProblem))
-      if z.errors != nil:
-        for err in z.errors:
-          errors.add(err)
-    if z.state == csMatch:
-      # little hack so that iterators are preferred over everything else:
-      if sym.kind == skIterator: inc(z.exactMatches, 200)
-      case best.state
-      of csEmpty, csNoMatch: best = z
-      of csMatch:
-        var cmp = cmpCandidates(best, z)
-        if cmp < 0: best = z   # x is better than the best so far
-        elif cmp == 0: alt = z # x is as good as the best so far
-        else: discard
-      #if sym.name.s == "cmp" and (n.info ?? "rstgen.nim") and n.info.line == 516:
-      #  echo "Matches ", n.info, " ", typeToString(sym.typ)
-      #  debug sym
-      #  writeMatches(z)
-      #  for i in 1 .. <len(z.call):
-      #    z.call[i].typ.debug
-      #  quit 1
+    initCandidate(c, z, sym, initialBinding, scope)
+    if c.currentScope.symbols.counter == counterInitial or syms != nil:
+      matches(c, n, orig, z)
+      if errors != nil:
+        errors.safeAdd((sym, int z.mutabilityProblem))
+        if z.errors != nil:
+          for err in z.errors:
+            errors.add(err)
+      if z.state == csMatch:
+        # little hack so that iterators are preferred over everything else:
+        if sym.kind == skIterator: inc(z.exactMatches, 200)
+        case best.state
+        of csEmpty, csNoMatch: best = z
+        of csMatch:
+          var cmp = cmpCandidates(best, z)
+          if cmp < 0: best = z   # x is better than the best so far
+          elif cmp == 0: alt = z # x is as good as the best so far
+    else:
+      # Symbol table has been modified. Restart and pre-calculate all syms
+      # before any further candidate init and compare. SLOW, but rare case.
+      syms = initCandidateSymbols(c, headSymbol, initialBinding, filter, best, alt, o)
+    if syms == nil:
+      sym = nextOverloadIter(o, c, headSymbol)
+      scope = o.lastOverloadScope
+    elif nextSymIndex < syms.len:
+      # rare case: retrieve the next pre-calculated symbol
+      sym = syms[nextSymIndex].s
+      scope = syms[nextSymIndex].scope
+      nextSymIndex += 1
+    else:
+      break
 
 proc notFoundError*(c: PContext, n: PNode, errors: CandidateErrors) =
   # Gives a detailed error message; this is separated from semOverloadedCall,
@@ -203,6 +215,7 @@ proc resolveOverloads(c: PContext, n, orig: PNode,
       if result.state != csMatch:
         n.sons.delete(1)
         orig.sons.delete(1)
+        excl n.flags, nfExprCall
       else: return
 
     if nfDotField in n.flags:
@@ -462,3 +475,9 @@ proc searchForBorrowProc(c: PContext, startScope: PScope, fn: PSym): PSym =
     var resolved = semOverloadedCall(c, call, call, {fn.kind})
     if resolved != nil:
       result = resolved.sons[0].sym
+      if not compareTypes(result.typ.sons[0], fn.typ.sons[0], dcEqIgnoreDistinct):
+        result = nil
+      elif result.magic in {mArrPut, mArrGet}:
+        # cannot borrow these magics for now
+        result = nil
+
diff --git a/compiler/semexprs.nim b/compiler/semexprs.nim
index fc31829ba..fbbaaf483 100644
--- a/compiler/semexprs.nim
+++ b/compiler/semexprs.nim
@@ -136,8 +136,10 @@ proc isCastable(dst, src: PType): bool =
   #                       tyProc, tySet, tyEnum, tyBool, tyChar}
   if skipTypes(dst, abstractInst-{tyOpenArray}).kind == tyOpenArray:
     return false
-  var dstSize, srcSize: BiggestInt
+  if skipTypes(src, abstractInst-{tyTypeDesc}).kind == tyTypeDesc:
+    return false
 
+  var dstSize, srcSize: BiggestInt
   dstSize = computeSize(dst)
   srcSize = computeSize(src)
   if dstSize < 0:
@@ -409,13 +411,11 @@ proc changeType(n: PNode, newType: PType, check: bool) =
   n.typ = newType
 
 proc arrayConstrType(c: PContext, n: PNode): PType =
-  var typ = newTypeS(tyArrayConstr, c)
+  var typ = newTypeS(tyArray, c)
   rawAddSon(typ, nil)     # index type
   if sonsLen(n) == 0:
     rawAddSon(typ, newTypeS(tyEmpty, c)) # needs an empty basetype!
   else:
-    var x = n.sons[0]
-    var lastIndex: BiggestInt = sonsLen(n) - 1
     var t = skipTypes(n.sons[0].typ, {tyGenericInst, tyVar, tyOrdinal})
     addSonSkipIntLit(typ, t)
   typ.sons[0] = makeRangeType(c, 0, sonsLen(n) - 1, n.info)
@@ -423,7 +423,7 @@ proc arrayConstrType(c: PContext, n: PNode): PType =
 
 proc semArrayConstr(c: PContext, n: PNode, flags: TExprFlags): PNode =
   result = newNodeI(nkBracket, n.info)
-  result.typ = newTypeS(tyArrayConstr, c)
+  result.typ = newTypeS(tyArray, c)
   rawAddSon(result.typ, nil)     # index type
   if sonsLen(n) == 0:
     rawAddSon(result.typ, newTypeS(tyEmpty, c)) # needs an empty basetype!
@@ -468,59 +468,11 @@ proc fixAbstractType(c: PContext, n: PNode) =
     if it.kind == nkHiddenSubConv and
         skipTypes(it.typ, abstractVar).kind notin {tyOpenArray, tyVarargs}:
       if skipTypes(it.sons[1].typ, abstractVar).kind in
-            {tyNil, tyArrayConstr, tyTuple, tySet}:
+            {tyNil, tyTuple, tySet} or it[1].isArrayConstr:
         var s = skipTypes(it.typ, abstractVar)
         if s.kind != tyExpr:
           changeType(it.sons[1], s, check=true)
         n.sons[i] = it.sons[1]
-  when false:
-    # XXX finally rewrite that crap!
-    for i in countup(1, sonsLen(n) - 1):
-      var it = n.sons[i]
-      case it.kind
-      of nkHiddenStdConv, nkHiddenSubConv:
-        if it.sons[1].kind == nkBracket:
-          it.sons[1].typ = arrayConstrType(c, it.sons[1])
-          #it.sons[1] = semArrayConstr(c, it.sons[1])
-        if skipTypes(it.typ, abstractVar).kind in {tyOpenArray, tyVarargs}:
-          #if n.sons[0].kind == nkSym and IdentEq(n.sons[0].sym.name, "[]="):
-          #  debug(n)
-
-          var s = skipTypes(it.sons[1].typ, abstractVar)
-          if s.kind == tyArrayConstr and s.sons[1].kind == tyEmpty:
-            s = copyType(s, getCurrOwner(), false)
-            skipTypes(s, abstractVar).sons[1] = elemType(
-                skipTypes(it.typ, abstractVar))
-            it.sons[1].typ = s
-          elif s.kind == tySequence and s.sons[0].kind == tyEmpty:
-            s = copyType(s, getCurrOwner(), false)
-            skipTypes(s, abstractVar).sons[0] = elemType(
-                skipTypes(it.typ, abstractVar))
-            it.sons[1].typ = s
-
-        elif skipTypes(it.sons[1].typ, abstractVar).kind in
-            {tyNil, tyArrayConstr, tyTuple, tySet}:
-          var s = skipTypes(it.typ, abstractVar)
-          if s.kind != tyExpr:
-            changeType(it.sons[1], s, check=true)
-          n.sons[i] = it.sons[1]
-      of nkBracket:
-        # an implicitly constructed array (passed to an open array):
-        n.sons[i] = semArrayConstr(c, it, {})
-      else:
-        discard
-        #if (it.typ == nil):
-        #  InternalError(it.info, "fixAbstractType: " & renderTree(it))
-
-proc skipObjConv(n: PNode): PNode =
-  case n.kind
-  of nkHiddenStdConv, nkHiddenSubConv, nkConv:
-    if skipTypes(n.sons[1].typ, abstractPtrs).kind in {tyTuple, tyObject}:
-      result = n.sons[1]
-    else:
-      result = n
-  of nkObjUpConv, nkObjDownConv: result = n.sons[0]
-  else: result = n
 
 proc isAssignable(c: PContext, n: PNode; isUnsafeAddr=false): TAssignableResult =
   result = parampatterns.isAssignable(c.p.owner, n, isUnsafeAddr)
@@ -701,9 +653,6 @@ proc semOverloadedCallAnalyseEffects(c: PContext, n: PNode, nOrig: PNode,
         # error correction, prevents endless for loop elimination in transf.
         # See bug #2051:
         result.sons[0] = newSymNode(errorSym(c, n))
-      if sfNoSideEffect notin callee.flags:
-        if {sfImportc, sfSideEffect} * callee.flags != {}:
-          incl(c.p.owner.flags, sfSideEffect)
 
 proc semObjConstr(c: PContext, n: PNode, flags: TExprFlags): PNode
 
@@ -804,9 +753,6 @@ proc semIndirectOp(c: PContext, n: PNode, flags: TExprFlags): PNode =
     else:
       result = m.call
       instGenericConvertersSons(c, result, m)
-    # we assume that a procedure that calls something indirectly
-    # has side-effects:
-    if tfNoSideEffect notin t.flags: incl(c.p.owner.flags, sfSideEffect)
   elif t != nil and t.kind == tyTypeDesc:
     if n.len == 1: return semObjConstr(c, n, flags)
     return semConv(c, n)
@@ -986,7 +932,7 @@ proc semSym(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
         tyTuple, tySet, tyUInt..tyUInt64:
       if s.magic == mNone: result = inlineConst(n, s)
       else: result = newSymNode(s, n.info)
-    of tyArrayConstr, tySequence:
+    of tyArray, tySequence:
       # Consider::
       #     const x = []
       #     proc p(a: openarray[int])
@@ -1040,9 +986,6 @@ proc semSym(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
 
     markUsed(n.info, s)
     styleCheckUse(n.info, s)
-    # if a proc accesses a global variable, it is not side effect free:
-    if sfGlobal in s.flags:
-      incl(c.p.owner.flags, sfSideEffect)
     result = newSymNode(s, n.info)
     # We cannot check for access to outer vars for example because it's still
     # not sure the symbol really ends up being used:
@@ -1091,7 +1034,7 @@ proc semSym(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
               result = check
             return result
           if ty.sons[0] == nil: break
-          ty = skipTypes(ty.sons[0], {tyGenericInst})
+          ty = skipTypes(ty.sons[0], skipPtrs)
     # old code, not sure if it's live code:
     markUsed(n.info, s)
     styleCheckUse(n.info, s)
@@ -1169,7 +1112,7 @@ proc builtinFieldAccess(c: PContext, n: PNode, flags: TExprFlags): PNode =
       f = lookupInRecordAndBuildCheck(c, n, ty.n, i, check)
       if f != nil: break
       if ty.sons[0] == nil: break
-      ty = skipTypes(ty.sons[0], {tyGenericInst})
+      ty = skipTypes(ty.sons[0], skipPtrs)
     if f != nil:
       if fieldVisible(c, f):
         # is the access to a public field or in the same module or in a friend?
@@ -1421,8 +1364,9 @@ proc semAsgn(c: PContext, n: PNode; mode=asgnNormal): PNode =
   # a = b # both are vars, means: a[] = b[]
   # a = b # b no 'var T' means: a = addr(b)
   var le = a.typ
-  if skipTypes(le, {tyGenericInst}).kind != tyVar and
-      isAssignable(c, a) == arNone:
+  if (skipTypes(le, {tyGenericInst}).kind != tyVar and
+        isAssignable(c, a) == arNone) or
+      skipTypes(le, abstractVar).kind in {tyOpenArray, tyVarargs}:
     # Direct assignment to a discriminant is allowed!
     localError(a.info, errXCannotBeAssignedTo,
                renderTree(a, {renderNoComments}))
@@ -2128,7 +2072,7 @@ proc semObjConstr(c: PContext, n: PNode, flags: TExprFlags): PNode =
       f = lookupInRecordAndBuildCheck(c, it, t.n, id, check)
       if f != nil: break
       if t.sons[0] == nil: break
-      t = skipTypes(t.sons[0], {tyGenericInst})
+      t = skipTypes(t.sons[0], skipPtrs)
     if f != nil and fieldVisible(c, f):
       it.sons[0] = newSymNode(f)
       e = fitNode(c, f.typ, e)
@@ -2145,7 +2089,7 @@ proc semObjConstr(c: PContext, n: PNode, flags: TExprFlags): PNode =
     while true:
       checkInitialized(objType.n, ids, n.info)
       if objType.sons[0] == nil: break
-      objType = skipTypes(objType.sons[0], {tyGenericInst})
+      objType = skipTypes(objType.sons[0], skipPtrs)
 
 proc semBlock(c: PContext, n: PNode): PNode =
   result = n
diff --git a/compiler/semfields.nim b/compiler/semfields.nim
index 2e6c6c3ea..9d8cea862 100644
--- a/compiler/semfields.nim
+++ b/compiler/semfields.nim
@@ -152,7 +152,7 @@ proc semForFields(c: PContext, n: PNode, m: TMagic): PNode =
     while t.kind == tyObject:
       semForObjectFields(fc, t.n, n, stmts)
       if t.sons[0] == nil: break
-      t = skipTypes(t.sons[0], abstractPtrs)
+      t = skipTypes(t.sons[0], skipPtrs)
   dec(c.p.nestedLoopCounter)
   # for TR macros this 'while true: ...; break' loop is pretty bad, so
   # we avoid it now if we can:
diff --git a/compiler/semfold.nim b/compiler/semfold.nim
index 02f238ae6..42fa60781 100644
--- a/compiler/semfold.nim
+++ b/compiler/semfold.nim
@@ -458,32 +458,6 @@ proc getConstIfExpr(c: PSym, n: PNode): PNode =
       if result == nil: result = getConstExpr(c, it.sons[0])
     else: internalError(it.info, "getConstIfExpr()")
 
-proc partialAndExpr(c: PSym, n: PNode): PNode =
-  # partial evaluation
-  result = n
-  var a = getConstExpr(c, n.sons[1])
-  var b = getConstExpr(c, n.sons[2])
-  if a != nil:
-    if getInt(a) == 0: result = a
-    elif b != nil: result = b
-    else: result = n.sons[2]
-  elif b != nil:
-    if getInt(b) == 0: result = b
-    else: result = n.sons[1]
-
-proc partialOrExpr(c: PSym, n: PNode): PNode =
-  # partial evaluation
-  result = n
-  var a = getConstExpr(c, n.sons[1])
-  var b = getConstExpr(c, n.sons[2])
-  if a != nil:
-    if getInt(a) != 0: result = a
-    elif b != nil: result = b
-    else: result = n.sons[2]
-  elif b != nil:
-    if getInt(b) != 0: result = b
-    else: result = n.sons[1]
-
 proc leValueConv(a, b: PNode): bool =
   result = false
   case a.kind
@@ -540,7 +514,8 @@ proc foldConv*(n, a: PNode; check = false): PNode =
     else:
       result = a
       result.typ = n.typ
-    if check: rangeCheck(n, result.intVal)
+    if check and result.kind in {nkCharLit..nkUInt64Lit}:
+      rangeCheck(n, result.intVal)
   of tyFloat..tyFloat64:
     case skipTypes(a.typ, abstractRange).kind
     of tyInt..tyInt64, tyEnum, tyBool, tyChar:
diff --git a/compiler/seminst.nim b/compiler/seminst.nim
index 460db4f7c..d7cad6a2f 100644
--- a/compiler/seminst.nim
+++ b/compiler/seminst.nim
@@ -47,7 +47,7 @@ proc rawHandleSelf(c: PContext; owner: PSym) =
         while t.kind == tyObject:
           addObjFieldsToLocalScope(c, t.n)
           if t.sons[0] == nil: break
-          t = t.sons[0].skipTypes(abstractPtrs)
+          t = t.sons[0].skipTypes(skipPtrs)
 
 proc pushProcCon*(c: PContext; owner: PSym) =
   rawPushProcCon(c, owner)
@@ -97,22 +97,6 @@ proc genericCacheGet(genericSym: PSym, entry: TInstantiation;
       if inst.compilesId == id and sameInstantiation(entry, inst[]):
         return inst.sym
 
-proc removeDefaultParamValues(n: PNode) =
-  # we remove default params, because they cannot be instantiated properly
-  # and they are not needed anyway for instantiation (each param is already
-  # provided).
-  when false:
-    for i in countup(1, sonsLen(n)-1):
-      var a = n.sons[i]
-      if a.kind != nkIdentDefs: IllFormedAst(a)
-      var L = a.len
-      if a.sons[L-1].kind != nkEmpty and a.sons[L-2].kind != nkEmpty:
-        # ``param: typ = defaultVal``.
-        # We don't need defaultVal for semantic checking and it's wrong for
-        # ``cmp: proc (a, b: T): int = cmp``. Hm, for ``cmp = cmp`` that is
-        # not possible... XXX We don't solve this issue here.
-        a.sons[L-1] = ast.emptyNode
-
 proc freshGenSyms(n: PNode, owner, orig: PSym, symMap: var TIdTable) =
   # we need to create a fresh set of gensym'ed symbols:
   if n.kind == nkSym and sfGenSym in n.sym.flags and n.sym.owner == orig:
@@ -128,17 +112,6 @@ proc freshGenSyms(n: PNode, owner, orig: PSym, symMap: var TIdTable) =
 
 proc addParamOrResult(c: PContext, param: PSym, kind: TSymKind)
 
-proc addProcDecls(c: PContext, fn: PSym) =
-  # get the proc itself in scope (e.g. for recursion)
-  addDecl(c, fn)
-
-  for i in 1 .. <fn.typ.n.len:
-    var param = fn.typ.n.sons[i].sym
-    param.owner = fn
-    addParamOrResult(c, param, fn.kind)
-
-  maybeAddResult(c, fn, fn.ast)
-
 proc instantiateBody(c: PContext, n, params: PNode, result, orig: PSym) =
   if n.sons[bodyPos].kind != nkEmpty:
     inc c.inGenericInst
@@ -172,9 +145,10 @@ proc fixupInstantiatedSymbols(c: PContext, s: PSym) =
       popInfoContext()
 
 proc sideEffectsCheck(c: PContext, s: PSym) =
-  if {sfNoSideEffect, sfSideEffect} * s.flags ==
-      {sfNoSideEffect, sfSideEffect}:
-    localError(s.info, errXhasSideEffects, s.name.s)
+  when false:
+    if {sfNoSideEffect, sfSideEffect} * s.flags ==
+        {sfNoSideEffect, sfSideEffect}:
+      localError(s.info, errXhasSideEffects, s.name.s)
 
 proc instGenericContainer(c: PContext, info: TLineInfo, header: PType,
                           allowMetaTypes = false): PType =
@@ -187,9 +161,6 @@ proc instGenericContainer(c: PContext, info: TLineInfo, header: PType,
   cl.allowMetaTypes = allowMetaTypes
   result = replaceTypeVarsT(cl, header)
 
-proc instGenericContainer(c: PContext, n: PNode, header: PType): PType =
-  result = instGenericContainer(c, n.info, header)
-
 proc instantiateProcType(c: PContext, pt: TIdTable,
                           prc: PSym, info: TLineInfo) =
   # XXX: Instantiates a generic proc signature, while at the same
diff --git a/compiler/semmagic.nim b/compiler/semmagic.nim
index cbe9bc176..806b00db6 100644
--- a/compiler/semmagic.nim
+++ b/compiler/semmagic.nim
@@ -151,13 +151,6 @@ proc isStrangeArray(t: PType): bool =
   let t = t.skipTypes(abstractInst)
   result = t.kind == tyArray and t.firstOrd != 0
 
-proc isNegative(n: PNode): bool =
-  let n = n.skipConv
-  if n.kind in {nkCharLit..nkUInt64Lit}:
-    result = n.intVal < 0
-  elif n.kind in nkCallKinds and n.sons[0].kind == nkSym:
-    result = n.sons[0].sym.magic in {mUnaryMinusI, mUnaryMinusI64}
-
 proc magicsAfterOverloadResolution(c: PContext, n: PNode,
                                    flags: TExprFlags): PNode =
   case n[0].sym.magic
diff --git a/compiler/sempass2.nim b/compiler/sempass2.nim
index b12ab5e96..df9b3f69c 100644
--- a/compiler/sempass2.nim
+++ b/compiler/sempass2.nim
@@ -59,7 +59,7 @@ type
     init: seq[int] # list of initialized variables
     guards: TModel # nested guards
     locked: seq[PNode] # locked locations
-    gcUnsafe, isRecursive, isToplevel: bool
+    gcUnsafe, isRecursive, isToplevel, hasSideEffect: bool
     maxLockLevel, currLockLevel: TLockLevel
   PEffects = var TEffects
 
@@ -131,7 +131,7 @@ proc guardDotAccess(a: PEffects; n: PNode) =
         if field != nil: break
         ty = ty.sons[0]
         if ty == nil: break
-        ty = ty.skipTypes(abstractPtrs)
+        ty = ty.skipTypes(skipPtrs)
     if field == nil:
       localError(n.info, errGenerated, "invalid guard field: " & g.name.s)
       return
@@ -192,6 +192,14 @@ proc markGcUnsafe(a: PEffects; reason: PNode) =
       a.owner.gcUnsafetyReason = newSym(skUnknown, getIdent("<unknown>"),
                                         a.owner, reason.info)
 
+when true:
+  template markSideEffect(a: PEffects; reason: typed) =
+    a.hasSideEffect = true
+else:
+  template markSideEffect(a: PEffects; reason: typed) =
+    a.hasSideEffect = true
+    markGcUnsafe(a, reason)
+
 proc listGcUnsafety(s: PSym; onlyWarning: bool; cycleCheck: var IntSet) =
   let u = s.gcUnsafetyReason
   if u != nil and not cycleCheck.containsOrIncl(u.id):
@@ -226,12 +234,16 @@ proc useVar(a: PEffects, n: PNode) =
         message(n.info, warnUninit, s.name.s)
       # prevent superfluous warnings about the same variable:
       a.init.add s.id
-  if {sfGlobal, sfThread} * s.flags != {} and s.kind in {skVar, skLet}:
+  if {sfGlobal, sfThread} * s.flags != {} and s.kind in {skVar, skLet} and
+      s.magic != mNimVm:
     if s.guard != nil: guardGlobal(a, n, s.guard)
     if {sfGlobal, sfThread} * s.flags == {sfGlobal} and
         (tfHasGCedMem in s.typ.flags or s.typ.isGCedMem):
       #if warnGcUnsafe in gNotes: warnAboutGcUnsafe(n)
       markGcUnsafe(a, s)
+    else:
+      markSideEffect(a, s)
+
 
 type
   TIntersection = seq[tuple[id, count: int]] # a simple count table
@@ -268,10 +280,6 @@ proc createTag(n: PNode): PNode =
     result.typ = sysTypeFromName"TEffect"
   if not n.isNil: result.info = n.info
 
-proc createAnyGlobal(n: PNode): PNode =
-  result = newSymNode(anyGlobal)
-  result.info = n.info
-
 proc addEffect(a: PEffects, e: PNode, useLineInfo=true) =
   assert e.kind != nkRaiseStmt
   var aa = a.exc
@@ -495,6 +503,8 @@ proc propagateEffects(tracked: PEffects, n: PNode, s: PSym) =
   if notGcSafe(s.typ) and sfImportc notin s.flags:
     if warnGcUnsafe in gNotes: warnAboutGcUnsafe(n)
     markGcUnsafe(tracked, s)
+  if tfNoSideEffect notin s.typ.flags:
+    markSideEffect(tracked, s)
   mergeLockLevels(tracked, n, s.getLockLevel)
 
 proc notNilCheck(tracked: PEffects, n: PNode, paramType: PType) =
@@ -550,12 +560,16 @@ proc trackOperand(tracked: PEffects, n: PNode, paramType: PType) =
       if notGcSafe(op) and not isOwnedProcVar(a, tracked.owner):
         if warnGcUnsafe in gNotes: warnAboutGcUnsafe(n)
         markGcUnsafe(tracked, a)
+      elif tfNoSideEffect notin op.flags and not isOwnedProcVar(a, tracked.owner):
+        markSideEffect(tracked, a)
     else:
       mergeEffects(tracked, effectList.sons[exceptionEffects], n)
       mergeTags(tracked, effectList.sons[tagEffects], n)
       if notGcSafe(op):
         if warnGcUnsafe in gNotes: warnAboutGcUnsafe(n)
         markGcUnsafe(tracked, a)
+      elif tfNoSideEffect notin op.flags:
+        markSideEffect(tracked, a)
   notNilCheck(tracked, n, paramType)
 
 proc breaksBlock(n: PNode): bool =
@@ -684,6 +698,7 @@ proc track(tracked: PEffects, n: PNode) =
         if a.sym == tracked.owner: tracked.isRecursive = true
         # even for recursive calls we need to check the lock levels (!):
         mergeLockLevels(tracked, n, a.sym.getLockLevel)
+        if sfSideEffect in a.sym.flags: markSideEffect(tracked, a)
       else:
         mergeLockLevels(tracked, n, op.lockLevel)
       var effectList = op.n.sons[0]
@@ -702,6 +717,10 @@ proc track(tracked: PEffects, n: PNode) =
           if not (a.kind == nkSym and a.sym == tracked.owner):
             if warnGcUnsafe in gNotes: warnAboutGcUnsafe(n)
             markGcUnsafe(tracked, a)
+        if tfNoSideEffect notin op.flags and not importedFromC(a):
+          # and it's not a recursive call:
+          if not (a.kind == nkSym and a.sym == tracked.owner):
+            markSideEffect(tracked, a)
     for i in 1 .. <len(n): trackOperand(tracked, n.sons[i], paramType(op, i))
     if a.kind == nkSym and a.sym.magic in {mNew, mNewFinalize, mNewSeq}:
       # may not look like an assignment, but it is:
@@ -793,9 +812,6 @@ proc track(tracked: PEffects, n: PNode) =
 proc subtypeRelation(spec, real: PNode): bool =
   result = safeInheritanceDiff(real.excType, spec.typ) <= 0
 
-proc symbolPredicate(spec, real: PNode): bool =
-  result = real.sym.id == spec.sym.id
-
 proc checkRaisesSpec(spec, real: PNode, msg: string, hints: bool;
                      effectPredicate: proc (a, b: PNode): bool {.nimcall.}) =
   # check that any real exception is listed in 'spec'; mark those as used;
@@ -912,8 +928,15 @@ proc trackProc*(s: PSym, body: PNode) =
     else:
       listGcUnsafety(s, onlyWarning=true)
       #localError(s.info, warnGcUnsafe2, s.name.s)
+  if sfNoSideEffect in s.flags and t.hasSideEffect:
+    when false:
+      listGcUnsafety(s, onlyWarning=false)
+    else:
+      localError(s.info, errXhasSideEffects, s.name.s)
   if not t.gcUnsafe:
     s.typ.flags.incl tfGcSafe
+  if not t.hasSideEffect and sfSideEffect notin s.flags:
+    s.typ.flags.incl tfNoSideEffect
   if s.typ.lockLevel == UnspecifiedLockLevel:
     s.typ.lockLevel = t.maxLockLevel
   elif t.maxLockLevel > s.typ.lockLevel:
diff --git a/compiler/semstmts.nim b/compiler/semstmts.nim
index 5f9989ea2..ebcff643f 100644
--- a/compiler/semstmts.nim
+++ b/compiler/semstmts.nim
@@ -155,7 +155,10 @@ proc discardCheck(c: PContext, result: PNode) =
       else:
         var n = result
         while n.kind in skipForDiscardable: n = n.lastSon
-        localError(n.info, errDiscardValueX, result.typ.typeToString)
+        if result.typ.kind == tyProc:
+          localError(n.info, "value of type '" & result.typ.typeToString & "' has to be discarded; for a function call use ()")
+        else:
+          localError(n.info, errDiscardValueX, result.typ.typeToString)
 
 proc semIf(c: PContext, n: PNode): PNode =
   result = n
@@ -659,7 +662,7 @@ proc semRaise(c: PContext, n: PNode): PNode =
   if n.sons[0].kind != nkEmpty:
     n.sons[0] = semExprWithType(c, n.sons[0])
     var typ = n.sons[0].typ
-    if typ.kind != tyRef or typ.sons[0].kind != tyObject:
+    if typ.kind != tyRef or typ.lastSon.kind != tyObject:
       localError(n.info, errExprCannotBeRaised)
 
 proc addGenericParamListToScope(c: PContext, n: PNode) =
@@ -1141,11 +1144,6 @@ type
   TProcCompilationSteps = enum
     stepRegisterSymbol,
     stepDetermineType,
-    stepCompileBody
-
-proc isForwardDecl(s: PSym): bool =
-  internalAssert s.kind == skProc
-  result = s.ast[bodyPos].kind != nkEmpty
 
 proc semProcAux(c: PContext, n: PNode, kind: TSymKind,
                 validPragmas: TSpecialWords,
@@ -1183,8 +1181,6 @@ proc semProcAux(c: PContext, n: PNode, kind: TSymKind,
     s.ast = n
     #s.scope = c.currentScope
 
-    # if typeIsDetermined: assert phase == stepCompileBody
-    # else: assert phase == stepDetermineType
   # before compiling the proc body, set as current the scope
   # where the proc was declared
   let oldScope = c.currentScope
@@ -1234,7 +1230,8 @@ proc semProcAux(c: PContext, n: PNode, kind: TSymKind,
       implicitPragmas(c, s, n, validPragmas)
   else:
     if n.sons[pragmasPos].kind != nkEmpty:
-      localError(n.sons[pragmasPos].info, errPragmaOnlyInHeaderOfProc)
+      localError(n.sons[pragmasPos].info, errPragmaOnlyInHeaderOfProcX,
+        "'" & proto.name.s & "' from " & $proto.info)
     if sfForward notin proto.flags:
       wrongRedefinition(n.info, proto.name.s)
     excl(proto.flags, sfForward)
@@ -1403,6 +1400,11 @@ proc semMacroDef(c: PContext, n: PNode): PNode =
   if namePos >= result.safeLen: return result
   var s = result.sons[namePos].sym
   var t = s.typ
+  var allUntyped = true
+  for i in 1 .. t.n.len-1:
+    let param = t.n.sons[i].sym
+    if param.typ.kind != tyExpr: allUntyped = false
+  if allUntyped: incl(s.flags, sfAllUntyped)
   if t.sons[0] == nil: localError(n.info, errXNeedsReturnType, "macro")
   if n.sons[bodyPos].kind == nkEmpty:
     localError(n.info, errImplOfXexpected, s.name.s)
@@ -1566,8 +1568,3 @@ proc semStmtList(c: PContext, n: PNode, flags: TExprFlags): PNode =
 proc semStmt(c: PContext, n: PNode): PNode =
   # now: simply an alias:
   result = semExprNoType(c, n)
-
-proc semStmtScope(c: PContext, n: PNode): PNode =
-  openScope(c)
-  result = semStmt(c, n)
-  closeScope(c)
diff --git a/compiler/semtempl.nim b/compiler/semtempl.nim
index 20b5071ac..dfe3ded0d 100644
--- a/compiler/semtempl.nim
+++ b/compiler/semtempl.nim
@@ -287,35 +287,6 @@ proc semTemplBodySons(c: var TemplCtx, n: PNode): PNode =
   for i in 0.. < n.len:
     result.sons[i] = semTemplBody(c, n.sons[i])
 
-proc wrapInBind(c: var TemplCtx; n: PNode; opr: string): PNode =
-  let ident = getIdent(opr)
-  if ident.id in c.toInject: return n
-
-  let s = searchInScopes(c.c, ident)
-  if s != nil:
-    var callee: PNode
-    if contains(c.toBind, s.id):
-      callee = symChoice(c.c, n, s, scClosed)
-    elif contains(c.toMixin, s.name.id):
-      callee = symChoice(c.c, n, s, scForceOpen)
-    elif s.owner == c.owner and sfGenSym in s.flags:
-      # template tmp[T](x: var seq[T]) =
-      # var yz: T
-      incl(s.flags, sfUsed)
-      callee = newSymNode(s, n.info)
-      styleCheckUse(n.info, s)
-    else:
-      callee = semTemplSymbol(c.c, n, s)
-
-    let call = newNodeI(nkCall, n.info)
-    call.add(callee)
-    for i in 0 .. n.len-1: call.add(n[i])
-    result = newNodeI(nkBind, n.info, 2)
-    result.sons[0] = n
-    result.sons[1] = call
-  else:
-    result = n
-
 proc oprIsRoof(n: PNode): bool =
   const roof = "^"
   case n.kind
diff --git a/compiler/semtypes.nim b/compiler/semtypes.nim
index 9d00c06ca..5f47bca5c 100644
--- a/compiler/semtypes.nim
+++ b/compiler/semtypes.nim
@@ -110,6 +110,8 @@ proc semContainer(c: PContext, n: PNode, kind: TTypeKind, kindStr: string,
   result = newOrPrevType(kind, prev, c)
   if sonsLen(n) == 2:
     var base = semTypeNode(c, n.sons[1], nil)
+    if base.kind == tyVoid:
+      localError(n.info, errTIsNotAConcreteType, typeToString(base))
     addSonSkipIntLit(result, base)
   else:
     localError(n.info, errXExpectsOneTypeParam, kindStr)
@@ -659,11 +661,12 @@ proc semObjectNode(c: PContext, n: PNode, prev: PType): PType =
   if n.sonsLen == 0: return newConstraint(c, tyObject)
   var check = initIntSet()
   var pos = 0
-  var base: PType = nil
+  var base, realBase: PType = nil
   # n.sons[0] contains the pragmas (if any). We process these later...
   checkSonsLen(n, 3)
   if n.sons[1].kind != nkEmpty:
-    base = skipTypesOrNil(semTypeNode(c, n.sons[1].sons[0], nil), skipPtrs)
+    realBase = semTypeNode(c, n.sons[1].sons[0], nil)
+    base = skipTypesOrNil(realBase, skipPtrs)
     if base.isNil:
       localError(n.info, errIllegalRecursionInTypeX, "object")
     else:
@@ -674,9 +677,10 @@ proc semObjectNode(c: PContext, n: PNode, prev: PType): PType =
         if concreteBase.kind != tyError:
           localError(n.sons[1].info, errInheritanceOnlyWithNonFinalObjects)
         base = nil
+        realBase = nil
   if n.kind != nkObjectTy: internalError(n.info, "semObjectNode")
   result = newOrPrevType(tyObject, prev, c)
-  rawAddSon(result, base)
+  rawAddSon(result, realBase)
   if result.n.isNil:
     result.n = newNodeI(nkRecList, n.info)
   else:
@@ -1137,14 +1141,12 @@ proc semProcTypeWithScope(c: PContext, n: PNode,
   checkSonsLen(n, 2)
   openScope(c)
   result = semProcTypeNode(c, n.sons[0], nil, prev, kind, isType=true)
+  # start with 'ccClosure', but of course pragmas can overwrite this:
+  result.callConv = ccClosure
   # dummy symbol for `pragma`:
   var s = newSymS(kind, newIdentNode(getIdent("dummy"), n.info), c)
   s.typ = result
-  if n.sons[1].kind == nkEmpty or n.sons[1].len == 0:
-    if result.callConv == ccDefault:
-      result.callConv = ccClosure
-      #Message(n.info, warnImplicitClosure, renderTree(n))
-  else:
+  if n.sons[1].kind != nkEmpty and n.sons[1].len > 0:
     pragma(c, s, n.sons[1], procTypePragmas)
     when useEffectSystem: setEffectsForProcType(result, n.sons[1])
   closeScope(c)
diff --git a/compiler/semtypinst.nim b/compiler/semtypinst.nim
index 12620d55d..b42d58474 100644
--- a/compiler/semtypinst.nim
+++ b/compiler/semtypinst.nim
@@ -86,7 +86,7 @@ type
 
 proc replaceTypeVarsTAux(cl: var TReplTypeVars, t: PType): PType
 proc replaceTypeVarsS(cl: var TReplTypeVars, s: PSym): PSym
-proc replaceTypeVarsN*(cl: var TReplTypeVars, n: PNode): PNode
+proc replaceTypeVarsN*(cl: var TReplTypeVars, n: PNode; start=0): PNode
 
 template checkMetaInvariants(cl: TReplTypeVars, t: PType) =
   when false:
@@ -151,7 +151,7 @@ proc reResolveCallsWithTypedescParams(cl: var TReplTypeVars, n: PNode): PNode =
 
   return n
 
-proc replaceTypeVarsN(cl: var TReplTypeVars, n: PNode): PNode =
+proc replaceTypeVarsN(cl: var TReplTypeVars, n: PNode; start=0): PNode =
   if n == nil: return
   result = copyNode(n)
   if n.typ != nil:
@@ -195,7 +195,9 @@ proc replaceTypeVarsN(cl: var TReplTypeVars, n: PNode): PNode =
     var length = sonsLen(n)
     if length > 0:
       newSons(result, length)
-      for i in countup(0, length - 1):
+      if start > 0:
+        result.sons[0] = n.sons[0]
+      for i in countup(start, length - 1):
         result.sons[i] = replaceTypeVarsN(cl, n.sons[i])
 
 proc replaceTypeVarsS(cl: var TReplTypeVars, s: PSym): PSym =
@@ -462,8 +464,8 @@ proc replaceTypeVarsTAux(cl: var TReplTypeVars, t: PType): PType =
               r = skipTypes(r2, {tyPtr, tyRef})
           result.sons[i] = r
           propagateToOwner(result, r)
-
-      result.n = replaceTypeVarsN(cl, result.n)
+      # bug #4677: Do not instantiate effect lists
+      result.n = replaceTypeVarsN(cl, result.n, ord(result.kind==tyProc))
 
       case result.kind
       of tyArray:
diff --git a/compiler/sigmatch.nim b/compiler/sigmatch.nim
index ec429968c..df5a76a57 100644
--- a/compiler/sigmatch.nim
+++ b/compiler/sigmatch.nim
@@ -352,18 +352,28 @@ proc handleFloatRange(f, a: PType): TTypeRelation =
       else: result = isIntConv
     else: result = isNone
 
-proc isObjectSubtype(a, f: PType): int =
+proc isObjectSubtype(c: var TCandidate; a, f, fGenericOrigin: PType): int =
   var t = a
   assert t.kind == tyObject
   var depth = 0
+  var last = a
   while t != nil and not sameObjectTypes(f, t):
     assert t.kind == tyObject
     t = t.sons[0]
     if t == nil: break
-    t = skipTypes(t, {tyGenericInst})
+    last = t
+    t = skipTypes(t, skipPtrs)
     inc depth
   if t != nil:
+    if fGenericOrigin != nil and last.kind == tyGenericInst and
+        last.len-1 == fGenericOrigin.len:
+      for i in countup(1, sonsLen(fGenericOrigin) - 1):
+        let x = PType(idTableGet(c.bindings, fGenericOrigin.sons[i]))
+        if x == nil:
+          put(c, fGenericOrigin.sons[i], last.sons[i])
     result = depth
+  else:
+    result = -1
 
 type
   SkippedPtr = enum skippedNone, skippedRef, skippedPtr
@@ -840,12 +850,7 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
     of tyOpenArray, tyVarargs:
       result = typeRel(c, base(f), base(a))
       if result < isGeneric: result = isNone
-    of tyArrayConstr:
-      if (f.sons[0].kind != tyGenericParam) and (a.sons[1].kind == tyEmpty):
-        result = isSubtype    # [] is allowed here
-      elif typeRel(c, base(f), a.sons[1]) >= isGeneric:
-        result = isSubtype
-    of tyArray:
+    of tyArray, tyArrayConstr:
       if (f.sons[0].kind != tyGenericParam) and (a.sons[1].kind == tyEmpty):
         result = isSubtype
       elif typeRel(c, base(f), a.sons[1]) >= isGeneric:
@@ -896,7 +901,7 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
         result = isEqual
         # elif tfHasMeta in f.flags: result = recordRel(c, f, a)
       else:
-        var depth = isObjectSubtype(a, f)
+        var depth = isObjectSubtype(c, a, f, nil)
         if depth > 0:
           inc(c.inheritancePenalty, depth)
           result = isSubtype
@@ -1012,6 +1017,15 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
       result = isGeneric
     else:
       let genericBody = f.sons[0]
+      var askip = skippedNone
+      var fskip = skippedNone
+      let aobj = x.skipToObject(askip)
+      let fobj = genericBody.lastSon.skipToObject(fskip)
+      if fobj != nil and aobj != nil and askip == fskip:
+        let depth = isObjectSubtype(c, aobj, fobj, f)
+        if depth >= 0:
+          c.inheritancePenalty += depth
+          return if depth == 0: isGeneric else: isSubtype
       result = typeRel(c, genericBody, x)
       if result != isNone:
         # see tests/generics/tgeneric3.nim for an example that triggers this
@@ -1075,7 +1089,7 @@ proc typeRel(c: var TCandidate, f, aOrig: PType, doBind = true): TTypeRelation =
   of tyBuiltInTypeClass:
     considerPreviousT:
       let targetKind = f.sons[0].kind
-      if targetKind == a.skipTypes({tyRange, tyGenericInst}).kind or
+      if targetKind == a.skipTypes({tyRange, tyGenericInst, tyBuiltInTypeClass}).kind or
          (targetKind in {tyProc, tyPointer} and a.kind == tyNil):
         put(c, f, a)
         return isGeneric
@@ -1310,8 +1324,9 @@ proc localConvMatch(c: PContext, m: var TCandidate, f, a: PType,
   var call = newNodeI(nkCall, arg.info)
   call.add(f.n.copyTree)
   call.add(arg.copyTree)
-  result = c.semOverloadedCall(c, call, call, routineKinds)
+  result = c.semExpr(c, call)
   if result != nil:
+    if result.typ == nil: return nil
     # resulting type must be consistent with the other arguments:
     var r = typeRel(m, f.sons[0], result.typ)
     if r < isGeneric: return nil
@@ -1320,13 +1335,6 @@ proc localConvMatch(c: PContext, m: var TCandidate, f, a: PType,
     if r == isGeneric:
       result.typ = getInstantiatedType(c, arg, m, base(f))
     m.baseTypeMatch = true
-    # bug #4545: allow the call to go through a 'var T':
-    let vt = result.sons[0].typ.sons[1]
-    if vt.kind == tyVar:
-      let x = result.sons[1]
-      let va = newNodeIT(nkHiddenAddr, x.info, vt)
-      va.add x
-      result.sons[1] = va
 
 proc incMatches(m: var TCandidate; r: TTypeRelation; convMatch = 1) =
   case r
@@ -1559,8 +1567,13 @@ proc paramTypesMatch*(m: var TCandidate, f, a: PType,
 
 
 proc setSon(father: PNode, at: int, son: PNode) =
-  if sonsLen(father) <= at: setLen(father.sons, at + 1)
+  let oldLen = father.len
+  if oldLen <= at:
+    setLen(father.sons, at + 1)
   father.sons[at] = son
+  # insert potential 'void' parameters:
+  #for i in oldLen ..< at:
+  #  father.sons[i] = newNodeIT(nkEmpty, son.info, getSysType(tyVoid))
 
 # we are allowed to modify the calling node in the 'prepare*' procs:
 proc prepareOperand(c: PContext; formal: PType; a: PNode): PNode =
@@ -1591,17 +1604,17 @@ proc prepareNamedParam(a: PNode) =
     a.sons[0] = newIdentNode(considerQuotedIdent(a.sons[0]), info)
 
 proc arrayConstr(c: PContext, n: PNode): PType =
-  result = newTypeS(tyArrayConstr, c)
+  result = newTypeS(tyArray, c)
   rawAddSon(result, makeRangeType(c, 0, 0, n.info))
   addSonSkipIntLit(result, skipTypes(n.typ, {tyGenericInst, tyVar, tyOrdinal}))
 
 proc arrayConstr(c: PContext, info: TLineInfo): PType =
-  result = newTypeS(tyArrayConstr, c)
+  result = newTypeS(tyArray, c)
   rawAddSon(result, makeRangeType(c, 0, -1, info))
   rawAddSon(result, newTypeS(tyEmpty, c)) # needs an empty basetype!
 
 proc incrIndexType(t: PType) =
-  assert t.kind == tyArrayConstr
+  assert t.kind == tyArray
   inc t.sons[0].n.sons[1].intVal
 
 template isVarargsUntyped(x): untyped =
diff --git a/compiler/suggest.nim b/compiler/suggest.nim
index c127b968c..52f00550b 100644
--- a/compiler/suggest.nim
+++ b/compiler/suggest.nim
@@ -273,7 +273,7 @@ proc suggestFieldAccess(c: PContext, n: PNode, outputs: var int) =
       while true:
         suggestObject(c, t.n, outputs)
         if t.sons[0] == nil: break
-        t = skipTypes(t.sons[0], {tyGenericInst})
+        t = skipTypes(t.sons[0], skipPtrs)
       suggestOperations(c, n, typ, outputs)
     elif typ.kind == tyTuple and typ.n != nil:
       suggestSymList(c, typ.n, outputs)
@@ -413,17 +413,16 @@ proc safeSemExpr*(c: PContext, n: PNode): PNode =
     result = ast.emptyNode
 
 proc suggestExpr*(c: PContext, node: PNode) =
-  if nfIsCursor notin node.flags:
-    if gTrackPos.line < 0: return
-    var cp = inCheckpoint(node.info)
-    if cp == cpNone: return
+  if gTrackPos.line < 0: return
+  var cp = inCheckpoint(node.info)
+  if cp == cpNone: return
   var outputs = 0
   # This keeps semExpr() from coming here recursively:
   if c.compilesContextId > 0: return
   inc(c.compilesContextId)
 
   if gIdeCmd == ideSug:
-    var n = if nfIsCursor in node.flags: node else: findClosestDot(node)
+    var n = findClosestDot(node)
     if n == nil: n = node
     if n.kind == nkDotExpr:
       var obj = safeSemExpr(c, n.sons[0])
@@ -436,7 +435,7 @@ proc suggestExpr*(c: PContext, node: PNode) =
       suggestEverything(c, n, outputs)
 
   elif gIdeCmd == ideCon:
-    var n = if nfIsCursor in node.flags: node else: findClosestCall(node)
+    var n = findClosestCall(node)
     if n == nil: n = node
     if n.kind in nkCallKinds:
       var a = copyNode(n)
diff --git a/compiler/transf.nim b/compiler/transf.nim
index fc400c524..5cd5e298b 100644
--- a/compiler/transf.nim
+++ b/compiler/transf.nim
@@ -594,13 +594,6 @@ proc transformFor(c: PTransf, n: PNode): PTransNode =
   popTransCon(c)
   # echo "transformed: ", stmtList.PNode.renderTree
 
-proc getMagicOp(call: PNode): TMagic =
-  if call.sons[0].kind == nkSym and
-      call.sons[0].sym.kind in {skProc, skMethod, skConverter}:
-    result = call.sons[0].sym.magic
-  else:
-    result = mNone
-
 proc transformCase(c: PTransf, n: PNode): PTransNode =
   # removes `elif` branches of a case stmt
   # adds ``else: nil`` if needed for the code generator
diff --git a/compiler/trees.nim b/compiler/trees.nim
index fdd88c348..a629b3834 100644
--- a/compiler/trees.nim
+++ b/compiler/trees.nim
@@ -12,32 +12,21 @@
 import
   ast, astalgo, lexer, msgs, strutils, wordrecg
 
-proc hasSon(father, son: PNode): bool =
-  for i in countup(0, sonsLen(father) - 1):
-    if father.sons[i] == son:
-      return true
-  result = false
-
-proc cyclicTreeAux(n, s: PNode): bool =
-  if n == nil:
-    return false
-  if hasSon(s, n):
-    return true
-  var m = sonsLen(s)
-  addSon(s, n)
+proc cyclicTreeAux(n: PNode, visited: var seq[PNode]): bool =
+  if n == nil: return
+  for v in visited:
+    if v == n: return true
   if not (n.kind in {nkEmpty..nkNilLit}):
-    for i in countup(0, sonsLen(n) - 1):
-      if cyclicTreeAux(n.sons[i], s):
-        return true
-  result = false
-  delSon(s, m)
+    visited.add(n)
+    for nSon in n.sons:
+      if cyclicTreeAux(nSon, visited): return true
+    discard visited.pop()
 
 proc cyclicTree*(n: PNode): bool =
-  var s = newNodeI(nkEmpty, n.info)
-  result = cyclicTreeAux(n, s)
+  var visited: seq[PNode] = @[]
+  cyclicTreeAux(n, visited)
 
 proc exprStructuralEquivalent*(a, b: PNode; strictSymEquality=false): bool =
-  result = false
   if a == b:
     result = true
   elif (a != nil) and (b != nil) and (a.kind == b.kind):
@@ -61,7 +50,6 @@ proc exprStructuralEquivalent*(a, b: PNode; strictSymEquality=false): bool =
         result = true
 
 proc sameTree*(a, b: PNode): bool =
-  result = false
   if a == b:
     result = true
   elif a != nil and b != nil and a.kind == b.kind:
@@ -84,17 +72,6 @@ proc sameTree*(a, b: PNode): bool =
           if not sameTree(a.sons[i], b.sons[i]): return
         result = true
 
-proc getProcSym*(call: PNode): PSym =
-  result = call.sons[0].sym
-
-proc getOpSym*(op: PNode): PSym =
-  if op.kind notin {nkCall, nkHiddenCallConv, nkCommand, nkCallStrLit}:
-    result = nil
-  else:
-    if sonsLen(op) <= 0: internalError(op.info, "getOpSym")
-    elif op.sons[0].kind == nkSym: result = op.sons[0].sym
-    else: result = nil
-
 proc getMagic*(op: PNode): TMagic =
   case op.kind
   of nkCallKinds:
@@ -104,9 +81,8 @@ proc getMagic*(op: PNode): TMagic =
   else: result = mNone
 
 proc isConstExpr*(n: PNode): bool =
-  result = (n.kind in
-      {nkCharLit..nkInt64Lit, nkStrLit..nkTripleStrLit,
-       nkFloatLit..nkFloat64Lit, nkNilLit}) or (nfAllConst in n.flags)
+  const atomKinds = {nkCharLit..nkNilLit} # Char, Int, UInt, Str, Float and Nil literals
+  n.kind in atomKinds or nfAllConst in n.flags
 
 proc isCaseObj*(n: PNode): bool =
   if n.kind == nkRecCase: return true
@@ -131,25 +107,6 @@ proc isDeepConstExpr*(n: PNode): bool =
         result = true
   else: discard
 
-proc flattenTreeAux(d, a: PNode, op: TMagic) =
-  if (getMagic(a) == op):     # a is a "leaf", so add it:
-    for i in countup(1, sonsLen(a) - 1): # BUGFIX
-      flattenTreeAux(d, a.sons[i], op)
-  else:
-    addSon(d, copyTree(a))
-
-proc flattenTree*(root: PNode, op: TMagic): PNode =
-  result = copyNode(root)
-  if getMagic(root) == op:
-    # BUGFIX: forget to copy prc
-    addSon(result, copyNode(root.sons[0]))
-    flattenTreeAux(result, root, op)
-
-proc swapOperands*(op: PNode) =
-  var tmp = op.sons[1]
-  op.sons[1] = op.sons[2]
-  op.sons[2] = tmp
-
 proc isRange*(n: PNode): bool {.inline.} =
   if n.kind in nkCallKinds:
     if n[0].kind == nkIdent and n[0].ident.id == ord(wDotDot) or
@@ -168,7 +125,6 @@ proc unnestStmts(n, result: PNode) =
     result.add(n)
 
 proc flattenStmts*(n: PNode): PNode =
-  ## flattens a nested statement list; used for pattern matching
   result = newNodeI(nkStmtList, n.info)
   unnestStmts(n, result)
   if result.len == 1:
diff --git a/compiler/types.nim b/compiler/types.nim
index 312e36ae5..3db0c4507 100644
--- a/compiler/types.nim
+++ b/compiler/types.nim
@@ -94,7 +94,8 @@ proc invalidGenericInst(f: PType): bool =
 
 proc isPureObject(typ: PType): bool =
   var t = typ
-  while t.kind == tyObject and t.sons[0] != nil: t = t.sons[0]
+  while t.kind == tyObject and t.sons[0] != nil:
+    t = t.sons[0].skipTypes(skipPtrs)
   result = t.sym != nil and sfPure in t.sym.flags
 
 proc getOrdValue(n: PNode): BiggestInt =
@@ -145,10 +146,6 @@ proc elemType*(t: PType): PType =
   else: result = t.lastSon
   assert(result != nil)
 
-proc skipGeneric(t: PType): PType =
-  result = t
-  while result.kind == tyGenericInst: result = lastSon(result)
-
 proc isOrdinalType(t: PType): bool =
   assert(t != nil)
   const
@@ -232,7 +229,8 @@ proc searchTypeForAux(t: PType, predicate: TTypePredicate,
   if result: return
   case t.kind
   of tyObject:
-    result = searchTypeForAux(t.sons[0], predicate, marker)
+    if t.sons[0] != nil:
+      result = searchTypeForAux(t.sons[0].skipTypes(skipPtrs), predicate, marker)
     if not result: result = searchTypeNodeForAux(t.n, predicate, marker)
   of tyGenericInst, tyDistinct:
     result = searchTypeForAux(lastSon(t), predicate, marker)
@@ -269,7 +267,9 @@ proc analyseObjectWithTypeFieldAux(t: PType,
       if searchTypeNodeForAux(t.n, isObjectWithTypeFieldPredicate, marker):
         return frEmbedded
     for i in countup(0, sonsLen(t) - 1):
-      res = analyseObjectWithTypeFieldAux(t.sons[i], marker)
+      var x = t.sons[i]
+      if x != nil: x = x.skipTypes(skipPtrs)
+      res = analyseObjectWithTypeFieldAux(x, marker)
       if res == frEmbedded:
         return frEmbedded
       if res == frHeader: result = frHeader
@@ -578,10 +578,6 @@ proc typeToString(typ: PType, prefer: TPreferedDesc = preferName): string =
     result = typeToStr[t.kind]
   result.addTypeFlags(t)
 
-proc resultType(t: PType): PType =
-  assert(t.kind == tyProc)
-  result = t.sons[0]          # nil is allowed
-
 proc base(t: PType): PType =
   result = t.sons[0]
 
@@ -661,7 +657,14 @@ proc lengthOrd(t: PType): BiggestInt =
   case t.kind
   of tyInt64, tyInt32, tyInt: result = lastOrd(t)
   of tyDistinct, tyConst, tyMutable: result = lengthOrd(t.sons[0])
-  else: result = lastOrd(t) - firstOrd(t) + 1
+  else:
+    let last = lastOrd t
+    let first = firstOrd t
+    # XXX use a better overflow check here:
+    if last == high(BiggestInt) and first <= 0:
+      result = last
+    else:
+      result = lastOrd(t) - firstOrd(t) + 1
 
 # -------------- type equality -----------------------------------------------
 
@@ -772,18 +775,6 @@ proc equalParams(a, b: PNode): TParamsEquality =
         result = paramsIncompatible # overloading by different
                                     # result types does not work
 
-proc sameLiteral(x, y: PNode): bool =
-  if x.kind == y.kind:
-    case x.kind
-    of nkCharLit..nkInt64Lit: result = x.intVal == y.intVal
-    of nkFloatLit..nkFloat64Lit: result = x.floatVal == y.floatVal
-    of nkNilLit: result = true
-    else: assert(false)
-
-proc sameRanges(a, b: PNode): bool =
-  result = sameLiteral(a.sons[0], b.sons[0]) and
-           sameLiteral(a.sons[1], b.sons[1])
-
 proc sameTuple(a, b: PType, c: var TSameTypeClosure): bool =
   # two tuples are equivalent iff the names, types and positions are the same;
   # however, both types may not have any field names (t.n may be nil) which
@@ -1070,10 +1061,10 @@ proc typeAllowedNode(marker: var IntSet, n: PNode, kind: TSymKind,
       of nkNone..nkNilLit:
         discard
       else:
+        if n.kind == nkRecCase and kind in {skProc, skConst}:
+          return n[0].typ
         for i in countup(0, sonsLen(n) - 1):
           let it = n.sons[i]
-          if it.kind == nkRecCase and kind in {skProc, skConst}:
-            return n.typ
           result = typeAllowedNode(marker, it, kind, flags)
           if result != nil: break
 
@@ -1306,7 +1297,7 @@ proc computeSizeAux(typ: PType, a: var BiggestInt): BiggestInt =
     a = maxAlign
   of tyObject:
     if typ.sons[0] != nil:
-      result = computeSizeAux(typ.sons[0], a)
+      result = computeSizeAux(typ.sons[0].skipTypes(skipPtrs), a)
       if result < 0: return
       maxAlign = a
     elif isObjectWithTypeFieldPredicate(typ):
diff --git a/compiler/typesrenderer.nim b/compiler/typesrenderer.nim
index d050a86b2..438744b1c 100644
--- a/compiler/typesrenderer.nim
+++ b/compiler/typesrenderer.nim
@@ -19,20 +19,14 @@ proc renderPlainSymbolName*(n: PNode): string =
   ## for the HTML hyperlinks.
   result = ""
   case n.kind
-  of nkPostfix:
-    for i in 0 .. <n.len:
-      result = renderPlainSymbolName(n[<n.len])
-      if result.len > 0:
-        return
+  of nkPostfix, nkAccQuoted:
+    result = renderPlainSymbolName(n[<n.len])
   of nkIdent:
-    if n.ident.s != "*":
-      result = n.ident.s
+    result = n.ident.s
   of nkSym:
     result = n.sym.renderDefinitionName(noQuotes = true)
   of nkPragmaExpr:
     result = renderPlainSymbolName(n[0])
-  of nkAccQuoted:
-    result = renderPlainSymbolName(n[<n.len])
   else:
     internalError(n.info, "renderPlainSymbolName() with " & $n.kind)
   assert(not result.isNil)
diff --git a/compiler/vm.nim b/compiler/vm.nim
index 5accf628e..efcc55c59 100644
--- a/compiler/vm.nim
+++ b/compiler/vm.nim
@@ -171,6 +171,7 @@ proc copyValue(src: PNode): PNode =
   result.info = src.info
   result.typ = src.typ
   result.flags = src.flags * PersistentNodeFlags
+  result.comment = src.comment
   when defined(useNodeIds):
     if result.id == nodeIdToDebug:
       echo "COMES FROM ", src.id
@@ -269,6 +270,7 @@ proc cleanUpOnException(c: PCtx; tos: PStackFrame):
         c.currentExceptionA = nil
         # execute the corresponding handler:
         while c.code[pc2].opcode == opcExcept: inc pc2
+        discard f.safePoints.pop
         return (pc2, f)
       inc pc2
       if c.code[pc2].opcode != opcExcept and nextExceptOrFinally >= 0:
@@ -282,7 +284,8 @@ proc cleanUpOnException(c: PCtx; tos: PStackFrame):
       pc2 = nextExceptOrFinally
     if c.code[pc2].opcode == opcFinally:
       # execute the corresponding handler, but don't quit walking the stack:
-      return (pc2, f)
+      discard f.safePoints.pop
+      return (pc2+1, f)
     # not the right one:
     discard f.safePoints.pop
 
@@ -964,7 +967,13 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
       # we'll execute in the 'raise' handler
       let rbx = instr.regBx - wordExcess - 1 # -1 for the following 'inc pc'
       inc pc, rbx
-      assert c.code[pc+1].opcode in {opcExcept, opcFinally}
+      while c.code[pc+1].opcode == opcExcept:
+        let rbx = c.code[pc+1].regBx - wordExcess - 1
+        inc pc, rbx
+      #assert c.code[pc+1].opcode in {opcExcept, opcFinally}
+      if c.code[pc+1].opcode != opcFinally:
+        # in an except handler there is no active safe point for the 'try':
+        tos.popSafePoint()
     of opcFinally:
       # just skip it; it's followed by the code we need to execute anyway
       tos.popSafePoint()
@@ -1063,7 +1072,7 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
     of opcRepr:
       decodeB(rkNode)
       createStr regs[ra]
-      regs[ra].node.strVal = renderTree(regs[rb].regToNode, {renderNoComments})
+      regs[ra].node.strVal = renderTree(regs[rb].regToNode, {renderNoComments, renderDocComments})
     of opcQuit:
       if c.mode in {emRepl, emStaticExpr, emStaticStmt}:
         message(c.debug[pc], hintQuitCalled)
diff --git a/compiler/vmdeps.nim b/compiler/vmdeps.nim
index 7dbf6f801..b40ca1058 100644
--- a/compiler/vmdeps.nim
+++ b/compiler/vmdeps.nim
@@ -109,10 +109,6 @@ proc mapTypeToAstX(t: PType; info: TLineInfo;
     mapTypeToBracketX(name, m, t, info, inst)
   template newNodeX(kind): untyped =
     newNodeIT(kind, if t.n.isNil: info else: t.n.info, t)
-  template newIdent(s): untyped =
-    var r = newNodeX(nkIdent)
-    r.add !s
-    r
   template newIdentDefs(n,t): untyped =
     var id = newNodeX(nkIdentDefs)
     id.add n  # name
diff --git a/compiler/vmgen.nim b/compiler/vmgen.nim
index 61ab65360..6bfc33f00 100644
--- a/compiler/vmgen.nim
+++ b/compiler/vmgen.nim
@@ -748,7 +748,7 @@ proc genConv(c: PCtx; n, arg: PNode; dest: var TDest; opc=opcConv) =
   let tmp = c.genx(arg)
   if dest < 0: dest = c.getTemp(n.typ)
   c.gABC(n, opc, dest, tmp)
-  c.gABx(n, opc, 0, genType(c, n.typ))
+  c.gABx(n, opc, 0, genType(c, n.typ.skipTypes({tyStatic})))
   c.gABx(n, opc, 0, genType(c, arg.typ.skipTypes({tyStatic})))
   c.freeTemp(tmp)
 
@@ -1127,14 +1127,6 @@ proc fitsRegister*(t: PType): bool =
   t.skipTypes(abstractInst-{tyTypeDesc}).kind in {
     tyRange, tyEnum, tyBool, tyInt..tyUInt64, tyChar}
 
-proc requiresCopy(n: PNode): bool =
-  if n.typ.skipTypes(abstractInst-{tyTypeDesc}).kind in atomicTypes:
-    result = false
-  elif n.kind in ({nkCurly, nkBracket, nkPar, nkObjConstr}+nkCallKinds):
-    result = false
-  else:
-    result = true
-
 proc unneededIndirection(n: PNode): bool =
   n.typ.skipTypes(abstractInst-{tyTypeDesc}).kind == tyRef
 
@@ -1215,8 +1207,6 @@ proc whichAsgnOpc(n: PNode): TOpcode =
   else:
     opcAsgnComplex
 
-proc isRef(t: PType): bool = t.skipTypes(abstractRange-{tyTypeDesc}).kind == tyRef
-
 proc whichAsgnOpc(n: PNode; opc: TOpcode): TOpcode = opc
 
 proc genAsgn(c: PCtx; dest: TDest; ri: PNode; requiresCopy: bool) =
@@ -1268,9 +1258,6 @@ proc isTemp(c: PCtx; dest: TDest): bool =
 template needsAdditionalCopy(n): untyped =
   not c.isTemp(dest) and not fitsRegister(n.typ)
 
-proc skipDeref(n: PNode): PNode =
-  result = if n.kind in {nkDerefExpr, nkHiddenDeref}: n.sons[0] else: n
-
 proc preventFalseAlias(c: PCtx; n: PNode; opc: TOpcode;
                        dest, idx, value: TRegister) =
   # opcLdObj et al really means "load address". We sometimes have to create a
@@ -1848,7 +1835,6 @@ proc genParams(c: PCtx; params: PNode) =
   # res.sym.position is already 0
   c.prc.slots[0] = (inUse: true, kind: slotFixedVar)
   for i in 1.. <params.len:
-    let param = params.sons[i].sym
     c.prc.slots[i] = (inUse: true, kind: slotFixedLet)
   c.prc.maxSlots = max(params.len, 1)
 
diff --git a/config/nim.cfg b/config/nim.cfg
index 0cc014a93..8c8270f3e 100644
--- a/config/nim.cfg
+++ b/config/nim.cfg
@@ -66,7 +66,7 @@ path="$lib/pure"
 @end
 
 @if unix:
-  @if not bsd:
+  @if not bsd or haiku:
     # -fopenmp
     gcc.options.linker = "-ldl"
     gcc.cpp.options.linker = "-ldl"
@@ -80,6 +80,14 @@ path="$lib/pure"
     # at least NetBSD has problems with thread local storage:
     tlsEmulation:on
   @end
+  @if haiku:
+    # -fopenmp
+    gcc.options.linker = "-lroot -lnetwork"
+    gcc.cpp.options.linker = "-lroot -lnetwork"
+    clang.options.linker = "-lroot -lnetwork"
+    clang.cpp.options.linker = "-lroot -lnetwork"
+    tcc.options.linker = "-lroot -lnetwork"
+  @end
 @end
 
 # Configuration for the Intel C/C++ compiler:
@@ -122,6 +130,17 @@ clang.objc.options.linker = "-lobjc -lgnustep-base"
   clang.objc.options.linker = "-framework Foundation"
 @end
 
+# Options for FreeBSD, OpenBSD, NetBSD linker to add locations for searching
+# shared libraries.
+@if freebsd or openbsd or netbsd:
+  gcc.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
+  gcc.cpp.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
+  llvm_gcc.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
+  llvm_gcc.cpp.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
+  clang.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
+  clang.cpp.options.linker = "-Wl,-rpath=.:/usr/local/lib:/usr/pkg/lib:/usr/X11R6/lib"
+@end
+
 # Configuration for the VxWorks
 # This has been tested with VxWorks 6.9 only
 @if vxworks:
diff --git a/config/nimdoc.cfg b/config/nimdoc.cfg
index 112833e58..832b4ffd0 100644
--- a/config/nimdoc.cfg
+++ b/config/nimdoc.cfg
@@ -49,7 +49,7 @@ $seeSrc
 # See doc.item for available substitution variables.
 doc.item.toc = """
   <li><a class="reference" href="#$itemSymOrID"
-    title="$header_plain">$name</a></li>
+    title="$header_plain">$name<span class="attachedType" style="visibility:hidden">$attype</span></a></li>
 """
 
 # HTML rendered for doc.item's seeSrc variable. Note that this will render to
@@ -60,8 +60,10 @@ doc.item.toc = """
 # * $url: whatever you did pass through the --docSeeSrcUrl switch (which also
 #   gets variables path/line replaced!)
 doc.item.seesrc = """&nbsp;&nbsp;<a
-href="${url}/${path}#L${line}"
-class="link-seesrc" target="_blank">Source</a>"""
+href="${url}/tree/${commit}/${path}#L${line}"
+class="link-seesrc" target="_blank">Source</a>
+<a href="${url}/edit/devel/${path}#L${line}" class="link-seesrc" target="_blank" >Edit</a>
+"""
 
 doc.toc = """
 <ul class="simple simple-toc" id="toc-list">
@@ -72,9 +74,38 @@ $content
 doc.body_toc = """
 <div class="row">
   <div class="three columns">
+  <div>
+    Search: <input type="text" id="searchInput"
+      onkeyup="search()" />
+  </div>
+  $tableofcontents
+  </div>
+  <div class="nine columns" id="content">
+  <div id="tocRoot"></div>
+  <p class="module-desc">$moduledesc</p>
+  $content
+  </div>
+</div>
+"""
+
+doc.body_toc_group = """
+<div class="row">
+  <div class="three columns">
+  <div>
+    Search: <input type="text" id="searchInput"
+      onkeyup="search()" />
+  </div>
+  <div>
+    Group by:
+    <select onchange="groupBy(this.value)">
+      <option value="section">Section</option>
+      <option value="type">Type</option>
+    </select>
+  </div>
   $tableofcontents
   </div>
   <div class="nine columns" id="content">
+  <div id="tocRoot"></div>
   <p class="module-desc">$moduledesc</p>
   $content
   </div>
@@ -93,7 +124,7 @@ doc.listing_end = "</pre>"
 doc.file = """<?xml version="1.0" encoding="utf-8" ?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<!--  This file is generated by Nimrod. -->
+<!--  This file is generated by Nim. -->
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
@@ -1244,8 +1275,16 @@ dt pre > span.Operator ~ span.Identifier, dt pre > span.Operator ~ span.Operator
   span.pragmaend {
     cursor: pointer;
   }
+
+div.search_results {
+  background-color: antiquewhite;
+  margin: 3em;
+  padding: 1em;
+  border: 1px solid #4d4d4d;
+}
 </style>
 
+<script type="text/javascript" src="../dochack.js"></script>
 
 <script type="text/javascript">
 function togglepragma(d) {
diff --git a/doc/advopt.txt b/doc/advopt.txt
index 02e69c5b8..b8980fa9c 100644
--- a/doc/advopt.txt
+++ b/doc/advopt.txt
@@ -3,6 +3,7 @@ Advanced commands:
   //compileToCpp, cpp       compile project to C++ code
   //compileToOC, objc       compile project to Objective C code
   //js                      compile project to Javascript
+  //e                       run a Nimscript file
   //rst2html                convert a reStructuredText file to HTML
   //rst2tex                 convert a reStructuredText file to TeX
   //jsondoc                 extract the documentation to a json file
diff --git a/doc/lib.rst b/doc/lib.rst
index 66928055a..828889968 100644
--- a/doc/lib.rst
+++ b/doc/lib.rst
@@ -582,4 +582,4 @@ Nim programming language.
   nimblepkglist.js or have javascript disabled in your browser.</b></div>
 
   <script type="text/javascript" src="nimblepkglist.js"></script>
-  <script type="text/javascript" src="http://irclogs.nim-lang.org/packages?callback=gotPackageList"></script>
+  <script type="text/javascript" src="http://irclogs.nim-lang.org/packages?callback=gotPackageList" async></script>
diff --git a/doc/manual/lexing.txt b/doc/manual/lexing.txt
index 4d03023c3..7ffd5eb1c 100644
--- a/doc/manual/lexing.txt
+++ b/doc/manual/lexing.txt
@@ -28,7 +28,7 @@ The parser uses a stack of indentation levels: the stack consists of integers
 counting the spaces. The indentation information is queried at strategic
 places in the parser but ignored otherwise: The pseudo terminal ``IND{>}``
 denotes an indentation that consists of more spaces than the entry at the top
-of the stack; IND{=} an indentation that has the same number of spaces. ``DED``
+of the stack; ``IND{=}`` an indentation that has the same number of spaces. ``DED``
 is another pseudo terminal that describes the *action* of popping a value
 from the stack, ``IND{>}`` then implies to push onto the stack.
 
@@ -399,7 +399,7 @@ These keywords are also operators:
 `=`:tok:, `:`:tok:, `::`:tok: are not available as general operators; they
 are used for other notational purposes.
 
-``*:`` is as a special case the two tokens `*`:tok: and `:`:tok:
+``*:`` is as a special case treated as the two tokens `*`:tok: and `:`:tok:
 (to support ``var v*: T``).
 
 
diff --git a/doc/manual/pragmas.txt b/doc/manual/pragmas.txt
index 70fc4a914..a19f41a34 100644
--- a/doc/manual/pragmas.txt
+++ b/doc/manual/pragmas.txt
@@ -161,7 +161,7 @@ requires full qualification.
 
 asmNoStackFrame pragma
 ----------------------
-A proc can be marked with the ``AsmNoStackFrame`` pragma to tell the compiler
+A proc can be marked with the ``asmNoStackFrame`` pragma to tell the compiler
 it should not generate a stack frame for the proc. There are also no exit
 statements like ``return result;`` generated and the generated C function is
 declared as ``__declspec(naked)`` or ``__attribute__((naked))`` (depending on
diff --git a/doc/manual/procs.txt b/doc/manual/procs.txt
index ea6866845..181b1b1e5 100644
--- a/doc/manual/procs.txt
+++ b/doc/manual/procs.txt
@@ -61,14 +61,14 @@ Calling a procedure can be done in many different ways:
 .. code-block:: nim
   proc callme(x, y: int, s: string = "", c: char, b: bool = false) = ...
 
-  # call with positional arguments # parameter bindings:
-  callme(0, 1, "abc", '\t', true)  # (x=0, y=1, s="abc", c='\t', b=true)
+  # call with positional arguments      # parameter bindings:
+  callme(0, 1, "abc", '\t', true)       # (x=0, y=1, s="abc", c='\t', b=true)
   # call with named and positional arguments:
-  callme(y=1, x=0, "abd", '\t')    # (x=0, y=1, s="abd", c='\t', b=false)
+  callme(y=1, x=0, "abd", '\t')         # (x=0, y=1, s="abd", c='\t', b=false)
   # call with named arguments (order is not relevant):
-  callme(c='\t', y=1, x=0)         # (x=0, y=1, s="", c='\t', b=false)
+  callme(c='\t', y=1, x=0)              # (x=0, y=1, s="", c='\t', b=false)
   # call as a command statement: no () needed:
-  callme 0, 1, "abc", '\t'
+  callme 0, 1, "abc", '\t'              # (x=0, y=1, s="abc", c='\t', b=false)
 
 A procedure may call itself recursively.
 
diff --git a/doc/manual/stmts.txt b/doc/manual/stmts.txt
index 318738063..fa1cac8e1 100644
--- a/doc/manual/stmts.txt
+++ b/doc/manual/stmts.txt
@@ -462,10 +462,10 @@ While statement
 Example:
 
 .. code-block:: nim
-  echo "Please tell me your password: \n"
+  echo "Please tell me your password:"
   var pw = readLine(stdin)
   while pw != "12345":
-    echo "Wrong password! Next try: \n"
+    echo "Wrong password! Next try:"
     pw = readLine(stdin)
 
 
diff --git a/doc/manual/syntax.txt b/doc/manual/syntax.txt
index 89f8ca707..f3ace9f56 100644
--- a/doc/manual/syntax.txt
+++ b/doc/manual/syntax.txt
@@ -62,7 +62,8 @@ Precedence level    Operators                                      First charact
 ================  ===============================================  ==================  ===============
 
 
-Whether an operator is used a prefix operator is also affected by preceeding whitespace (this parsing change was introduced with version 0.13.0):
+Whether an operator is used a prefix operator is also affected by preceding
+whitespace (this parsing change was introduced with version 0.13.0):
 
 .. code-block:: nim
   echo $foo
diff --git a/doc/manual/templates.txt b/doc/manual/templates.txt
index be5c6fa18..f01a703cd 100644
--- a/doc/manual/templates.txt
+++ b/doc/manual/templates.txt
@@ -406,11 +406,11 @@ builtin can be used for that:
 
   macro debug(n: varargs[typed]): untyped =
     result = newNimNode(nnkStmtList, n)
-    for i in 0..n.len-1:
+    for x in n:
       # we can bind symbols in scope via 'bindSym':
-      add(result, newCall(bindSym"write", bindSym"stdout", toStrLit(n[i])))
+      add(result, newCall(bindSym"write", bindSym"stdout", toStrLit(x)))
       add(result, newCall(bindSym"write", bindSym"stdout", newStrLitNode(": ")))
-      add(result, newCall(bindSym"writeLine", bindSym"stdout", n[i]))
+      add(result, newCall(bindSym"writeLine", bindSym"stdout", x))
 
   var
     a: array [0..10, int]
diff --git a/doc/manual/type_sections.txt b/doc/manual/type_sections.txt
index 34bbe6bd5..af761c77e 100644
--- a/doc/manual/type_sections.txt
+++ b/doc/manual/type_sections.txt
@@ -13,7 +13,7 @@ Example:
     Sym = object       # a symbol
       name: string     # the symbol's name
       line: int        # the line the symbol was declared in
-      code: Node      # the symbol's abstract syntax tree
+      code: Node       # the symbol's abstract syntax tree
 
 A type section begins with the ``type`` keyword. It contains multiple
 type definitions. A type definition binds a type to a name. Type definitions
diff --git a/doc/manual/types.txt b/doc/manual/types.txt
index 1e2dc857f..02426e0d9 100644
--- a/doc/manual/types.txt
+++ b/doc/manual/types.txt
@@ -227,8 +227,8 @@ floating pointer values at compile time; this means expressions like
 Boolean type
 ------------
 The boolean type is named `bool`:idx: in Nim and can be one of the two
-pre-defined values ``true`` and ``false``. Conditions in while,
-if, elif, when statements need to be of type bool.
+pre-defined values ``true`` and ``false``. Conditions in ``while``,
+``if``, ``elif``, ``when``-statements need to be of type ``bool``.
 
 This condition holds::
 
@@ -390,7 +390,10 @@ i-th *unichar*. The iterator ``runes`` from the `unicode module
 
 cstring type
 ------------
-The ``cstring`` type represents a pointer to a zero-terminated char array
+
+The ``cstring`` type meaning `compatible string` is the native representation
+of a string for the compilation backend. For the C backend the ``cstring`` type
+represents a pointer to a zero-terminated char array
 compatible to the type ``char*`` in Ansi C. Its primary purpose lies in easy
 interfacing with C. The index operation ``s[i]`` means the i-th *char* of
 ``s``; however no bounds checking for ``cstring`` is performed making the
@@ -421,7 +424,6 @@ string from a cstring:
   var cstr: cstring = str
   var newstr: string = $cstr
 
-
 Structured types
 ----------------
 A variable of a structured type can hold multiple values at the same
@@ -607,7 +609,7 @@ is similar to the ``instanceof`` operator in Java.
       age: int        # no * means that the field is hidden
 
     Student = ref object of Person # a student is a person
-      id: int                  # with an id field
+      id: int                      # with an id field
 
   var
     student: Student
@@ -1260,4 +1262,4 @@ Is the same as:
 
 However later versions of the language might change this to mean "infer the
 parameters' types from the body". Then the above ``foo`` would be rejected as
-the parameters' types can not be infered from an empty ``discard`` statement.
+the parameters' types can not be inferred from an empty ``discard`` statement.
diff --git a/doc/nimsuggest.rst b/doc/nimsuggest.rst
index 2b52196b9..4da39b5d0 100644
--- a/doc/nimsuggest.rst
+++ b/doc/nimsuggest.rst
@@ -80,7 +80,7 @@ a location. A query location consists of:
 
 ``col``
     An integer with the column you are going to query. For the
-    compiler columns start at **1**.
+    compiler columns start at **0**.
 
 
 Definitions
@@ -160,7 +160,7 @@ tab characters (``\t``). The values of each column are:
 6. Line where the symbol is located in the file. Lines start to
    count at **1**.
 7. Column where the symbol is located in the file. Columns start
-   to count at **1**.
+   to count at **0**.
 8. Docstring for the symbol if available or the empty string. To
    differentiate the docstring from end of answer,
    the docstring is always provided enclosed in double quotes, and
diff --git a/doc/sets_fragment.txt b/doc/sets_fragment.txt
index a6fe7555d..435807e1a 100644
--- a/doc/sets_fragment.txt
+++ b/doc/sets_fragment.txt
@@ -1,5 +1,5 @@
-The set type models the mathematical notion of a set. The set's
-basetype can only be an ordinal type of a certain size, namely:
+The set type models the mathematical notion of a set. The set's basetype can
+only be an ordinal type of a certain size, namely:
   * ``int8``-``int16``
   * ``uint8``/``byte``-``uint16``
   * ``char``
diff --git a/doc/tut2.rst b/doc/tut2.rst
index 3f94325ff..845feb6d1 100644
--- a/doc/tut2.rst
+++ b/doc/tut2.rst
@@ -674,17 +674,18 @@ variable number of arguments:
 
   macro debug(n: varargs[expr]): stmt =
     # `n` is a Nim AST that contains a list of expressions;
-    # this macro returns a list of statements:
+    # this macro returns a list of statements (n is passed for proper line
+    # information):
     result = newNimNode(nnkStmtList, n)
     # iterate over any argument that is passed to this macro:
-    for i in 0..n.len-1:
+    for x in n:
       # add a call to the statement list that writes the expression;
       # `toStrLit` converts an AST to its string representation:
-      result.add(newCall("write", newIdentNode("stdout"), toStrLit(n[i])))
+      result.add(newCall("write", newIdentNode("stdout"), toStrLit(x)))
       # add a call to the statement list that writes ": "
       result.add(newCall("write", newIdentNode("stdout"), newStrLitNode(": ")))
       # add a call to the statement list that writes the expressions value:
-      result.add(newCall("writeLine", newIdentNode("stdout"), n[i]))
+      result.add(newCall("writeLine", newIdentNode("stdout"), x))
 
   var
     a: array[0..10, int]
diff --git a/finish.nim b/finish.nim
new file mode 100644
index 000000000..34580e171
--- /dev/null
+++ b/finish.nim
@@ -0,0 +1,158 @@
+
+# -------------- post unzip steps ---------------------------------------------
+
+import strutils, os, osproc
+
+when defined(windows):
+  import registry
+
+  proc askBool(m: string): bool =
+    stdout.write m
+    while true:
+      let answer = stdin.readLine().normalize
+      case answer
+      of "y", "yes":
+        return true
+      of "n", "no":
+        return false
+      else:
+        echo "Please type 'y' or 'n'"
+
+  proc askNumber(m: string; a, b: int): int =
+    stdout.write m
+    stdout.write " [" & $a & ".." & $b & "] "
+    while true:
+      let answer = stdin.readLine()
+      try:
+        result = parseInt answer
+        if result < a or result > b:
+          raise newException(ValueError, "number out of range")
+        break
+      except ValueError:
+        echo "Please type in a number between ", a, " and ", b
+
+  proc patchConfig(mingw: string) =
+    const
+      cfgFile = "config/nim.cfg"
+      lookFor = """#gcc.path = r"$nim\dist\mingw\bin""""
+      replacePattern = """gcc.path = r"$1""""
+    try:
+      let cfg = readFile(cfgFile)
+      let newCfg = cfg.replace(lookFor, replacePattern % mingw)
+      if newCfg == cfg:
+        echo "Could not patch 'config/nim.cfg' [Error]"
+        echo "Reason: patch substring not found:"
+        echo lookFor
+      else:
+        writeFile(cfgFile, newCfg)
+    except IOError:
+      echo "Could not access 'config/nim.cfg' [Error]"
+
+  proc addToPathEnv(e: string) =
+    let p = getUnicodeValue(r"Environment", "Path", HKEY_CURRENT_USER)
+    let x = if e.contains(Whitespace): "\"" & e & "\"" else: e
+    setUnicodeValue(r"Environment", "Path", p & ";" & x, HKEY_CURRENT_USER)
+
+  proc createShortcut(src, dest: string; icon = "") =
+    var cmd = "bin\\makelink.exe \"" & src & "\" \"\" \"" & dest &
+         ".lnk\" \"\" 1 \"" & splitFile(src).dir & "\""
+    if icon.len != 0:
+      cmd.add " \"" & icon & "\" 0"
+    discard execShellCmd(cmd)
+
+  proc createStartMenuEntry() =
+    let appdata = getEnv("APPDATA")
+    if appdata.len == 0: return
+    let dest = appdata & r"\Microsoft\Windows\Start Menu\Programs\Nim-" &
+               NimVersion
+    if dirExists(dest): return
+    if askBool("Would like to add Nim-" & NimVersion &
+               " to your start menu? (y/n) "):
+      createDir(dest)
+      createShortcut(getCurrentDir() / "start.bat", dest / "Nim",
+                     getCurrentDir() / r"icons\nim.ico")
+      if fileExists("doc/overview.html"):
+        createShortcut(getCurrentDir() / "doc" / "overview.html",
+                       dest / "Overview")
+      if dirExists(r"dist\aporia-0.4.0"):
+        createShortcut(getCurrentDir() / r"dist\aporia-0.4.0\bin\aporia.exe",
+                       dest / "Aporia")
+
+  proc checkGccArch(mingw: string): bool =
+    let gccExe = mingw / r"gcc.exe"
+    if fileExists(gccExe):
+      try:
+        let arch = execProcess(gccExe, ["-dumpmachine"], nil, {poStdErrToStdOut,
+                                                               poUsePath})
+        when hostCPU == "i386":
+          result = arch.startsWith("i686-")
+        elif hostCPU == "amd64":
+          result = arch.startsWith("x86_64-")
+        else:
+          {.error: "Unknown CPU for Windows.".}
+      except OSError, IOError:
+        result = false
+
+  proc tryDirs(dirs: varargs[string]): string =
+    let bits = $(sizeof(pointer)*8)
+    for d in dirs:
+      if dirExists d:
+        let x = expandFilename(d / "bin")
+        if checkGccArch(x): return x
+      elif dirExists(d & bits):
+        let x = expandFilename((d & bits) / "bin")
+        if checkGccArch(x): return x
+
+proc main() =
+  when defined(windows):
+    let desiredPath = expandFilename(getCurrentDir() / "bin")
+    let p = getUnicodeValue(r"Environment", "Path",
+      HKEY_CURRENT_USER)
+    var alreadyInPath = false
+    var mingWchoices: seq[string] = @[]
+    for x in p.split(';'):
+      let y = expandFilename(if x[0] == '"' and x[^1] == '"':
+                  substr(x, 1, x.len-2) else: x)
+      if y == desiredPath: alreadyInPath = true
+      if y.toLowerAscii.contains("mingw"):
+        if dirExists(y) and checkGccArch(y):
+          mingWchoices.add y
+
+    if alreadyInPath:
+      echo "bin/nim.exe is already in your PATH [Skipping]"
+    else:
+      if askBool("nim.exe is not in your PATH environment variable.\n" &
+          " Should it be added permanently? (y/n) "):
+        addToPathEnv(desiredPath)
+    if mingWchoices.len == 0:
+      # No mingw in path, so try a few locations:
+      let alternative = tryDirs("dist/mingw", "../mingw", r"C:\mingw")
+      if alternative.len == 0:
+        echo "No MingW found in PATH and no candidate found " &
+            " in the standard locations [Error]"
+      else:
+        if askBool("Found a MingW directory that is not in your PATH.\n" &
+                   alternative &
+                   "\nShould it be added to your PATH permanently? (y/n) "):
+          addToPathEnv(alternative)
+        elif askBool("Do you want to patch Nim's config to use this? (y/n) "):
+          patchConfig(alternative)
+    elif mingWchoices.len == 1:
+      if askBool("MingW installation found at " & mingWchoices[0] & "\n" &
+         "Do you want to patch Nim's config to use this?\n" &
+         "(Not required since it's in your PATH!) (y/n) "):
+        patchConfig(mingWchoices[0])
+    else:
+      echo "Multiple MingW installations found: "
+      for i in 0..high(mingWchoices):
+        echo "[", i, "] ", mingWchoices[i]
+      if askBool("Do you want to patch Nim's config to use one of these? (y/n) "):
+        let idx = askNumber("Which one do you want to use for Nim? ",
+            1, len(mingWchoices))
+        patchConfig(mingWchoices[idx-1])
+    createStartMenuEntry()
+  else:
+    echo("Add ", getCurrentDir(), "/bin to your PATH...")
+
+when isMainModule:
+  main()
diff --git a/install.txt b/install.txt
index 67be2221b..833fbf0fb 100644
--- a/install.txt
+++ b/install.txt
@@ -30,6 +30,15 @@ There are also ``install.sh`` and ``deinstall.sh`` scripts for distributing
 the files over the UNIX hierarchy. However, updating your Nim installation
 is more cumbersome then.
 
+To complete the installation you should also build Nim's tools like
+``nimsuggest``, ``nimble`` or ``nimgrep`` via::
+
+  nim e install_tools.nims
+
+Note that these tools should also end up in your ``PATH`` so adding
+``$your_install_dir/bin/nim`` to your ``PATH`` is preferred over the symlink
+solution.
+
 
 Installation on the Macintosh
 -----------------------------
diff --git a/install_nimble.nims b/install_nimble.nims
index 5d028726b..05024c046 100644
--- a/install_nimble.nims
+++ b/install_nimble.nims
@@ -16,4 +16,8 @@ mkDir "bin/nimblepkg"
 for file in listFiles("nimble" & $id & "/src/nimblepkg/"):
   cpFile file, "bin/nimblepkg/" & file.extractFilename
 
-mvFile "nimble" & $id & "/src/nimble".toExe, "bin/nimble".toExe
+try:
+  mvFile "nimble" & $id & "/src/nimble".toExe, "bin/nimble".toExe
+except OSError:
+  cpFile "nimble" & $id & "/src/nimble".toExe, "bin/nimble".toExe
+  
diff --git a/install_tools.nims b/install_tools.nims
new file mode 100644
index 000000000..e211ff491
--- /dev/null
+++ b/install_tools.nims
@@ -0,0 +1,18 @@
+
+import ospaths
+
+mode = ScriptMode.Verbose
+
+if not dirExists"dist/nimble":
+  echo "[Error] This script only works for the tarball."
+else:
+  let nimbleExe = "./bin/nimble".toExe
+  selfExec "c --noNimblePath -p:compiler -o:" & nimbleExe &
+      " dist/nimble/src/nimble.nim"
+
+  let nimsugExe = "./bin/nimsuggest".toExe
+  selfExec "c --noNimblePath -p:compiler -o:" & nimsugExe &
+      " dist/nimsuggest/nimsuggest.nim"
+
+  let nimgrepExe = "./bin/nimgrep".toExe
+  selfExec "c -o:./bin/nimgrep tools/nimgrep.nim"
diff --git a/koch.nim b/koch.nim
index 04f6a4e4e..25c02937f 100644
--- a/koch.nim
+++ b/koch.nim
@@ -20,11 +20,6 @@ import
 
 const VersionAsString = system.NimVersion #"0.10.2"
 
-when defined(withUpdate):
-  import httpclient
-when defined(haveZipLib):
-  import zipfiles
-
 const
   HelpText = """
 +-----------------------------------------------------------------+
@@ -40,7 +35,7 @@ Options:
   --help, -h               shows this help and quits
 Possible Commands:
   boot [options]           bootstraps with given command line options
-  install [bindir]         installs to given directory; Unix only!
+  distrohelper [bindir]    helper for distro packagers
   geninstall               generate ./install.sh; Unix only!
   testinstall              test tar.xz package; Unix only! Only for devs!
   clean                    cleans Nim project; removes generated files
@@ -52,8 +47,6 @@ Possible Commands:
   xz                       builds the installation XZ package
   nsis [options]           builds the NSIS Setup installer (for Windows)
   tests [options]          run the testsuite
-  update                   updates nim to the latest version from github
-                           (compile koch with -d:withUpdate to enable)
   temp options             creates a temporary compiler for testing
   winrelease               creates a release (for coredevs only)
 Boot options:
@@ -69,7 +62,10 @@ Web options:
                            build the official docs, use UA-48159761-1
 """
 
-proc exe(f: string): string = return addFileExt(f, ExeExt)
+proc exe(f: string): string =
+  result = addFileExt(f, ExeExt)
+  when defined(windows):
+    result = result.replace('/','\\')
 
 proc findNim(): string =
   var nim = "nim".exe
@@ -123,6 +119,8 @@ proc testUnixInstall() =
       execCleanPath("./koch boot -d:release", destDir / "bin")
       # check the docs build:
       execCleanPath("./koch web", destDir / "bin")
+      # check nimble builds:
+      execCleanPath("./bin/nim e install_tools.nims")
       # check the tests work:
       execCleanPath("./koch tests", destDir / "bin")
     else:
@@ -143,13 +141,13 @@ proc copyExe(source, dest: string) =
   inclFilePermissions(dest, {fpUserExec})
 
 const
-  compileNimInst = "-d:useLibzipSrc tools/niminst/niminst"
+  compileNimInst = "tools/niminst/niminst"
 
 proc csource(args: string) =
   exec("$4 cc $1 -r $3 --var:version=$2 --var:mingw=none csource --main:compiler/nim.nim compiler/installer.ini $1" %
        [args, VersionAsString, compileNimInst, findNim()])
 
-proc bundleNimble() =
+proc bundleNimbleSrc() =
   if dirExists("dist/nimble/.git"):
     exec("git --git-dir dist/nimble/.git pull")
   else:
@@ -157,20 +155,38 @@ proc bundleNimble() =
   let tags = execProcess("git --git-dir dist/nimble/.git tag -l v*").splitLines
   let tag = tags[^1]
   exec("git --git-dir dist/nimble/.git checkout " & tag)
+
+proc bundleNimbleExe() =
+  bundleNimbleSrc()
   # now compile Nimble and copy it to $nim/bin for the installer.ini
   # to pick it up:
   exec(findNim() & " c dist/nimble/src/nimble.nim")
   copyExe("dist/nimble/src/nimble".exe, "bin/nimble".exe)
 
+proc bundleNimsuggest(buildExe: bool) =
+  if dirExists("dist/nimsuggest/.git"):
+    exec("git --git-dir dist/nimsuggest/.git pull")
+  else:
+    exec("git clone https://github.com/nim-lang/nimsuggest.git dist/nimsuggest")
+  if buildExe:
+    exec(findNim() & " c --noNimblePath -p:compiler dist/nimsuggest/nimsuggest.nim")
+    copyExe("dist/nimsuggest/nimsuggest".exe, "bin/nimsuggest".exe)
+
+proc bundleFinishExe() =
+  exec(findNim() & " c finish.nim")
+
 proc zip(args: string) =
-  bundleNimble()
+  bundleNimbleSrc()
+  bundleNimsuggest(false)
+  bundleFinishExe()
   exec("$3 cc -r $2 --var:version=$1 --var:mingw=none --main:compiler/nim.nim scripts compiler/installer.ini" %
        [VersionAsString, compileNimInst, findNim()])
   exec("$# --var:version=$# --var:mingw=none --main:compiler/nim.nim zip compiler/installer.ini" %
        ["tools/niminst/niminst".exe, VersionAsString])
 
 proc xz(args: string) =
-  bundleNimble()
+  bundleNimbleSrc()
+  bundleNimsuggest(false)
   exec("$3 cc -r $2 --var:version=$1 --var:mingw=none --main:compiler/nim.nim scripts compiler/installer.ini" %
        [VersionAsString, compileNimInst, findNim()])
   exec("$# --var:version=$# --var:mingw=none --main:compiler/nim.nim xz compiler/installer.ini" %
@@ -181,7 +197,9 @@ proc buildTool(toolname, args: string) =
   copyFile(dest="bin"/ splitFile(toolname).name.exe, source=toolname.exe)
 
 proc nsis(args: string) =
-  bundleNimble()
+  bundleNimbleExe()
+  bundleNimsuggest(true)
+  bundleFinishExe()
   # make sure we have generated the niminst executables:
   buildTool("tools/niminst/niminst", args)
   #buildTool("tools/nimgrep", args)
@@ -195,11 +213,8 @@ proc geninstall(args="") =
   exec("$# cc -r $# --var:version=$# --var:mingw=none --main:compiler/nim.nim scripts compiler/installer.ini $#" %
        [findNim(), compileNimInst, VersionAsString, args])
 
-proc install(args: string) =
-  geninstall()
-  exec("sh ./install.sh $#" % args)
-
 proc web(args: string) =
+  exec("$# js tools/dochack/dochack.nim" % findNim())
   exec("$# cc -r tools/nimweb.nim $# web/website.ini --putenv:nimversion=$#" %
        [findNim(), args, VersionAsString])
 
@@ -244,11 +259,13 @@ proc boot(args: string) =
   var finalDest = "bin" / "nim".exe
   # default to use the 'c' command:
   let bootOptions = if args.len == 0 or args.startsWith("-"): "c" else: ""
+  let smartNimcache = if "release" in args: "rnimcache" else: "dnimcache"
 
   copyExe(findStartNim(), 0.thVersion)
   for i in 0..2:
     echo "iteration: ", i+1
-    exec i.thVersion & " $# $# compiler" / "nim.nim" % [bootOptions, args]
+    exec i.thVersion & " $# $# --nimcache:$# compiler" / "nim.nim" % [bootOptions, args,
+        smartNimcache]
     if sameFileContent(output, i.thVersion):
       copyExe(output, finalDest)
       echo "executables are equal: SUCCESS!"
@@ -273,7 +290,7 @@ proc cleanAux(dir: string) =
   for kind, path in walkDir(dir):
     case kind
     of pcFile:
-      var (dir, name, ext) = splitFile(path)
+      var (_, name, ext) = splitFile(path)
       if ext == "" or cleanExt.contains(ext):
         if not ignore.contains(name):
           echo "removing: ", path
@@ -302,99 +319,14 @@ proc clean(args: string) =
       echo "removing dir: ", path
       removeDir(path)
 
-# -------------- update -------------------------------------------------------
-
-when defined(withUpdate):
-  when defined(windows):
-    {.warning: "Windows users: Make sure to run 'koch update' in Bash.".}
-
-  proc update(args: string) =
-    when defined(windows):
-      echo("Windows users: Make sure to be running this in Bash. ",
-           "If you aren't, press CTRL+C now.")
-
-    var thisDir = getAppDir()
-    var git = findExe("git")
-    echo("Checking for git repo and git executable...")
-    if existsDir(thisDir & "/.git") and git != "":
-      echo("Git repo found!")
-      # use git to download latest source
-      echo("Checking for updates...")
-      discard startCmd(git & " fetch origin master")
-      var procs = startCmd(git & " diff origin/master master")
-      var errcode = procs.waitForExit()
-      var output = readLine(procs.outputStream)
-      echo(output)
-      if errcode == 0:
-        if output == "":
-          # No changes
-          echo("No update. Exiting...")
-          return
-        else:
-          echo("Fetching updates from repo...")
-          var pullout = execCmdEx(git & " pull origin master")
-          if pullout[1] != 0:
-            quit("An error has occurred.")
-          else:
-            if pullout[0].startsWith("Already up-to-date."):
-              quit("No new changes fetched from the repo. " &
-                   "Local branch must be ahead of it. Exiting...")
-      else:
-        quit("An error has occurred.")
-
-    else:
-      echo("No repo or executable found!")
-      when defined(haveZipLib):
-        echo("Falling back.. Downloading source code from repo...")
-        # use dom96's httpclient to download zip
-        downloadFile("https://github.com/Araq/Nim/zipball/master",
-                     thisDir / "update.zip")
-        try:
-          echo("Extracting source code from archive...")
-          var zip: TZipArchive
-          discard open(zip, thisDir & "/update.zip", fmRead)
-          extractAll(zip, thisDir & "/")
-        except:
-          quit("Error reading archive.")
-      else:
-        quit("No failback available. Exiting...")
-
-    echo("Starting update...")
-    boot(args)
-    echo("Update complete!")
-
 # -------------- builds a release ---------------------------------------------
 
-proc run7z(platform: string, patterns: varargs[string]) =
-  const tmpDir = "nim-" & VersionAsString
-  createDir tmpDir
-  try:
-    for pattern in patterns:
-      for f in walkFiles(pattern):
-        if "nimcache" notin f:
-          copyFile(f, tmpDir / f)
-    exec("7z a -tzip $1-$2.zip $1" % [tmpDir, platform])
-  finally:
-    removeDir tmpDir
-
 proc winRelease() =
-  boot(" -d:release")
-  #buildTool("tools/niminst/niminst", " -d:release")
-  buildTool("tools/nimgrep", " -d:release")
-  buildTool("compiler/nimfix/nimfix", " -d:release")
-  buildTool("compiler/nimsuggest/nimsuggest", " -d:release")
-
-  #run7z("win32", "bin/nim.exe", "bin/c2nim.exe", "bin/nimgrep.exe",
-  #      "bin/nimfix.exe",
-  #      "bin/nimble.exe", "bin/*.dll",
-  #      "config", "dist/*.dll", "examples", "lib",
-  #      "readme.txt", "contributors.txt", "copying.txt")
-
-  # second step: XXX build 64 bit version
+  exec(r"call ci\nsis_build.bat " & VersionAsString)
 
 # -------------- tests --------------------------------------------------------
 
-template `|`(a, b): expr = (if a.len > 0: a else: b)
+template `|`(a, b): string = (if a.len > 0: a else: b)
 
 proc tests(args: string) =
   # we compile the tester with taintMode:on to have a basic
@@ -444,14 +376,9 @@ of cmdArgument:
   of "xz": xz(op.cmdLineRest)
   of "nsis": nsis(op.cmdLineRest)
   of "geninstall": geninstall(op.cmdLineRest)
-  of "install": install(op.cmdLineRest)
+  of "distrohelper": geninstall()
   of "testinstall": testUnixInstall()
   of "test", "tests": tests(op.cmdLineRest)
-  of "update":
-    when defined(withUpdate):
-      update(op.cmdLineRest)
-    else:
-      quit "this Koch has not been compiled with -d:withUpdate"
   of "temp": temp(op.cmdLineRest)
   of "winrelease": winRelease()
   else: showHelp()
diff --git a/lib/arch/arch.nim b/lib/arch/arch.nim
index a11bfb21f..c8ae3da1c 100644
--- a/lib/arch/arch.nim
+++ b/lib/arch/arch.nim
@@ -6,6 +6,9 @@
 #    See the file "copying.txt", included in this
 #    distribution, for details about the copyright.
 #
+# Architecture-specific optimizations and features.
+# arch.nim can be imported by only a subset of the
+# architectures supported by Nim.
 
 when defined(windows):
   const
diff --git a/lib/core/macros.nim b/lib/core/macros.nim
index 4296cb0ae..19452b4a8 100644
--- a/lib/core/macros.nim
+++ b/lib/core/macros.nim
@@ -333,7 +333,7 @@ proc parseStmt*(s: string): NimNode {.noSideEffect, compileTime.} =
   let x = internalErrorFlag()
   if x.len > 0: raise newException(ValueError, x)
 
-proc getAst*(macroOrTemplate: expr): NimNode {.magic: "ExpandToAst", noSideEffect.}
+proc getAst*(macroOrTemplate: untyped): NimNode {.magic: "ExpandToAst", noSideEffect.}
   ## Obtains the AST nodes returned from a macro or template invocation.
   ## Example:
   ##
@@ -342,7 +342,7 @@ proc getAst*(macroOrTemplate: expr): NimNode {.magic: "ExpandToAst", noSideEffec
   ##   macro FooMacro() =
   ##     var ast = getAst(BarTemplate())
 
-proc quote*(bl: stmt, op = "``"): NimNode {.magic: "QuoteAst", noSideEffect.}
+proc quote*(bl: typed, op = "``"): NimNode {.magic: "QuoteAst", noSideEffect.}
   ## Quasi-quoting operator.
   ## Accepts an expression or a block and returns the AST that represents it.
   ## Within the quoted AST, you are able to interpolate NimNode expressions
@@ -663,7 +663,7 @@ proc copyChildrenTo*(src, dest: NimNode) {.compileTime.}=
   for i in 0 .. < src.len:
     dest.add src[i].copyNimTree
 
-template expectRoutine(node: NimNode): stmt =
+template expectRoutine(node: NimNode) =
   expectKind(node, RoutineNodes)
 
 proc name*(someProc: NimNode): NimNode {.compileTime.} =
@@ -870,7 +870,7 @@ proc hasArgOfName* (params: NimNode; name: string): bool {.compiletime.}=
   ## Search nnkFormalParams for an argument.
   assert params.kind == nnkFormalParams
   for i in 1 .. <params.len:
-    template node: expr = params[i]
+    template node: untyped = params[i]
     if name.eqIdent( $ node[0]):
       return true
 
@@ -891,7 +891,7 @@ proc boolVal*(n: NimNode): bool {.compileTime, noSideEffect.} =
   else: n == bindSym"true" # hacky solution for now
 
 when not defined(booting):
-  template emit*(e: static[string]): stmt {.deprecated.} =
+  template emit*(e: static[string]): untyped {.deprecated.} =
     ## accepts a single string argument and treats it as nim code
     ## that should be inserted verbatim in the program
     ## Example:
@@ -900,6 +900,6 @@ when not defined(booting):
     ##   emit("echo " & '"' & "hello world".toUpper & '"')
     ##
     ## Deprecated since version 0.15 since it's so rarely useful.
-    macro payload: stmt {.gensym.} =
+    macro payload: untyped {.gensym.} =
       result = parseStmt(e)
     payload()
diff --git a/lib/impure/re.nim b/lib/impure/re.nim
index bf397550a..bd86bcdcf 100644
--- a/lib/impure/re.nim
+++ b/lib/impure/re.nim
@@ -359,7 +359,7 @@ proc parallelReplace*(s: string, subs: openArray[
 proc transformFile*(infile, outfile: string,
                     subs: openArray[tuple[pattern: Regex, repl: string]]) =
   ## reads in the file `infile`, performs a parallel replacement (calls
-  ## `parallelReplace`) and writes back to `outfile`. Raises ``EIO`` if an
+  ## `parallelReplace`) and writes back to `outfile`. Raises ``IOError`` if an
   ## error occurs. This is supposed to be used for quick scripting.
   var x = readFile(infile).string
   writeFile(outfile, x.parallelReplace(subs))
diff --git a/lib/nimbase.h b/lib/nimbase.h
index 37f8f5c3d..52de60969 100644
--- a/lib/nimbase.h
+++ b/lib/nimbase.h
@@ -415,16 +415,6 @@ struct TFrame {
 
 #define NIM_POSIX_INIT  __attribute__((constructor))
 
-#if defined(_MSCVER) && defined(__i386__)
-__declspec(naked) int __fastcall NimXadd(volatile int* pNum, int val) {
-  __asm {
-    lock xadd dword ptr [ECX], EDX
-    mov EAX, EDX
-    ret
-  }
-}
-#endif
-
 #ifdef __GNUC__
 #  define likely(x) __builtin_expect(x, 1)
 #  define unlikely(x) __builtin_expect(x, 0)
diff --git a/lib/packages/docutils/rstgen.nim b/lib/packages/docutils/rstgen.nim
index 8b5bb0e8f..47247dd7c 100644
--- a/lib/packages/docutils/rstgen.nim
+++ b/lib/packages/docutils/rstgen.nim
@@ -415,18 +415,28 @@ proc sortIndex(a: var openArray[IndexEntry]) =
       a[j] <- v
     if h == 1: break
 
+proc escapeLink(s: string): string =
+  result = newStringOfCap(s.len + s.len shr 2)
+  for c in items(s):
+    case c
+    of 'a'..'z', '_', 'A'..'Z', '0'..'9', '.', '#', ',', '/':
+      result.add c
+    else:
+      add(result, "%")
+      add(result, toHex(ord(c), 2))
+
 proc generateSymbolIndex(symbols: seq[IndexEntry]): string =
-  result = ""
+  result = "<dl>"
   var i = 0
   while i < symbols.len:
-    let keyword= symbols[i].keyword
-    let cleaned_keyword = keyword[1..keyword.high - 1]
-    result.addf("<dt><a name=\"$2\" href=\"#$2\"><span>$1:</span></a></dt><ul class=\"simple\"><dd>\n",
+    let keyword = symbols[i].keyword
+    let cleaned_keyword = keyword.escapeLink
+    result.addf("<dt><a name=\"$2\" href=\"#$2\"><span>$1:</span></a></dt><dd><ul class=\"simple\">\n",
                 [keyword, cleaned_keyword])
     var j = i
     while j < symbols.len and keyword == symbols[j].keyword:
       let
-        url = symbols[j].link
+        url = symbols[j].link.escapeLink
         text = if not symbols[j].linkTitle.isNil: symbols[j].linkTitle else: url
         desc = if not symbols[j].linkDesc.isNil: symbols[j].linkDesc else: ""
       if desc.len > 0:
@@ -439,6 +449,7 @@ proc generateSymbolIndex(symbols: seq[IndexEntry]): string =
       inc j
     result.add("</ul></dd>\n")
     i = j
+  result.add("</dl>")
 
 proc isDocumentationTitle(hyperlink: string): bool =
   ## Returns true if the hyperlink is actually a documentation title.
@@ -463,9 +474,9 @@ proc indentToLevel(level: var int, newLevel: int): string =
   if level == newLevel:
     return
   if newLevel > level:
-    result = repeat("<ul>", newLevel - level)
+    result = repeat("<li><ul>", newLevel - level)
   else:
-    result = repeat("</ul>", level - newLevel)
+    result = repeat("</ul></li>", level - newLevel)
   level = newLevel
 
 proc generateDocumentationTOC(entries: seq[IndexEntry]): string =
@@ -503,7 +514,7 @@ proc generateDocumentationTOC(entries: seq[IndexEntry]): string =
     else:
       result.add(level.indentToLevel(levels[L].level))
       result.add("<li><a href=\"" & link & "\">" &
-        levels[L].text & "</a>\n")
+        levels[L].text & "</a></li>\n")
     inc L
   result.add(level.indentToLevel(1) & "</ul>\n")
   assert(not titleRef.isNil,
@@ -520,7 +531,7 @@ proc generateDocumentationIndex(docs: IndexedDocs): string =
   for title in titles:
     let tocList = generateDocumentationTOC(docs.getOrDefault(title))
     result.add("<ul><li><a href=\"" &
-      title.link & "\">" & title.keyword & "</a>\n" & tocList & "</ul>\n")
+      title.link & "\">" & title.keyword & "</a>\n" & tocList & "</li></ul>\n")
 
 proc generateDocumentationJumps(docs: IndexedDocs): string =
   ## Returns a plain list of hyperlinks to documentation TOCs in HTML.
@@ -783,7 +794,7 @@ proc renderImage(d: PDoc, n: PRstNode, result: var string) =
   if s.valid: dispA(d.target, options, " align=\"$1\"", "", [strip(s)])
 
   if options.len > 0: options = dispF(d.target, "$1", "[$1]", [options])
-  
+
   if arg.valid:
     let htmlOut = if isObject:
         "<object data=\"$1\" type=\"image/svg+xml\"$2 >" & content & "</object>"
diff --git a/lib/posix/posix.nim b/lib/posix/posix.nim
index bd69b2328..b96e88b6c 100644
--- a/lib/posix/posix.nim
+++ b/lib/posix/posix.nim
@@ -1694,6 +1694,8 @@ var
 
   INADDR_ANY* {.importc, header: "<netinet/in.h>".}: InAddrScalar
     ## IPv4 local host address.
+  INADDR_LOOPBACK* {.importc, header: "<netinet/in.h>".}: InAddrScalar
+    ## IPv4 loopback address.
   INADDR_BROADCAST* {.importc, header: "<netinet/in.h>".}: InAddrScalar
     ## IPv4 broadcast address.
 
@@ -2653,6 +2655,12 @@ proc poll*(a1: ptr TPollfd, a2: Tnfds, a3: int): cint {.
 proc realpath*(name, resolved: cstring): cstring {.
   importc: "realpath", header: "<stdlib.h>".}
 
+proc mkstemp*(tmpl: cstring): cint {.importc, header: "<stdlib.h>".}
+  ## Create a temporary file.
+  ##
+  ## **Warning**: The `tmpl` argument is written to by `mkstemp` and thus
+  ## can't be a string literal. If in doubt copy the string before passing it.
+
 proc utimes*(path: cstring, times: ptr array[2, Timeval]): int {.
   importc: "utimes", header: "<sys/time.h>".}
   ## Sets file access and modification times.
diff --git a/lib/posix/termios.nim b/lib/posix/termios.nim
index c3934c6a9..1fbccba9c 100644
--- a/lib/posix/termios.nim
+++ b/lib/posix/termios.nim
@@ -259,3 +259,13 @@ proc tcFlow*(fd: cint; action: cint): cint {.importc: "tcflow",
 # Get process group ID for session leader for controlling terminal FD.
 
 proc tcGetSid*(fd: cint): Pid {.importc: "tcgetsid", header: "<termios.h>".}
+
+# Window size ioctl.  Should work on on any Unix that xterm has been ported to.
+var TIOCGWINSZ*{.importc, header: "<sys/ioctl.h>".}: culong
+
+type IOctl_WinSize* {.importc: "struct winsize", header: "<sys/ioctl.h>",
+                      final, pure.} = object
+  ws_row*, ws_col*, ws_xpixel*, ws_ypixel*: cushort
+
+proc ioctl*(fd: cint, request: culong, reply: ptr IOctl_WinSize): int {.
+  importc: "ioctl", header: "<stdio.h>", varargs.}
diff --git a/lib/pure/algorithm.nim b/lib/pure/algorithm.nim
index b83daf245..739cdc16b 100644
--- a/lib/pure/algorithm.nim
+++ b/lib/pure/algorithm.nim
@@ -179,7 +179,7 @@ proc sort*[T](a: var openArray[T],
   ##    sort(myStrArray, system.cmp)
   ##
   ## You can inline adhoc comparison procs with the `do notation
-  ## <manual.html#do-notation>`_. Example:
+  ## <manual.html#procedures-do-notation>`_. Example:
   ##
   ## .. code-block:: nim
   ##
diff --git a/lib/pure/asyncdispatch.nim b/lib/pure/asyncdispatch.nim
index 79bc1b96d..8336da1fb 100644
--- a/lib/pure/asyncdispatch.nim
+++ b/lib/pure/asyncdispatch.nim
@@ -9,7 +9,7 @@
 
 include "system/inclrtl"
 
-import os, oids, tables, strutils, macros, times, heapqueue
+import os, oids, tables, strutils, times, heapqueue
 
 import nativesockets, net, queues
 
@@ -105,6 +105,36 @@ export Port, SocketFlag
 ## be used to await a procedure returning a ``Future[void]``:
 ## ``await socket.send("foobar")``.
 ##
+## If an awaited future completes with an error, then ``await`` will re-raise
+## this error. To avoid this, you can use the ``yield`` keyword instead of
+## ``await``. The following section shows different ways that you can handle
+## exceptions in async procs.
+##
+## Handling Exceptions
+## ~~~~~~~~~~~~~~~~~~~
+##
+## The most reliable way to handle exceptions is to use ``yield`` on a future
+## then check the future's ``failed`` property. For example:
+##
+##   .. code-block:: Nim
+##     var future = sock.recv(100)
+##     yield future
+##     if future.failed:
+##       # Handle exception
+##
+## The ``async`` procedures also offer limited support for the try statement.
+##
+##    .. code-block:: Nim
+##      try:
+##        let data = await sock.recv(100)
+##        echo("Received ", data)
+##      except:
+##        # Handle exception
+##
+## Unfortunately the semantics of the try statement may not always be correct,
+## and occassionally the compilation may fail altogether.
+## As such it is better to use the former style when possible.
+##
 ## Discarding futures
 ## ------------------
 ##
@@ -126,279 +156,10 @@ export Port, SocketFlag
 ## * Can't await in a ``except`` body
 ## * Forward declarations for async procs are broken,
 ##   link includes workaround: https://github.com/nim-lang/Nim/issues/3182.
-## * FutureVar[T] needs to be completed manually.
 
 # TODO: Check if yielded future is nil and throw a more meaningful exception
 
-# -- Futures
-
-type
-  FutureBase* = ref object of RootObj ## Untyped future.
-    cb: proc () {.closure,gcsafe.}
-    finished: bool
-    error*: ref Exception ## Stored exception
-    errorStackTrace*: string
-    when not defined(release):
-      stackTrace: string ## For debugging purposes only.
-      id: int
-      fromProc: string
-
-  Future*[T] = ref object of FutureBase ## Typed future.
-    value: T ## Stored value
-
-  FutureVar*[T] = distinct Future[T]
-
-  FutureError* = object of Exception
-    cause*: FutureBase
-
-{.deprecated: [PFutureBase: FutureBase, PFuture: Future].}
-
-when not defined(release):
-  var currentID = 0
-
-proc callSoon*(cbproc: proc ()) {.gcsafe.}
-
-proc newFuture*[T](fromProc: string = "unspecified"): Future[T] =
-  ## Creates a new future.
-  ##
-  ## Specifying ``fromProc``, which is a string specifying the name of the proc
-  ## that this future belongs to, is a good habit as it helps with debugging.
-  new(result)
-  result.finished = false
-  when not defined(release):
-    result.stackTrace = getStackTrace()
-    result.id = currentID
-    result.fromProc = fromProc
-    currentID.inc()
-
-proc newFutureVar*[T](fromProc = "unspecified"): FutureVar[T] =
-  ## Create a new ``FutureVar``. This Future type is ideally suited for
-  ## situations where you want to avoid unnecessary allocations of Futures.
-  ##
-  ## Specifying ``fromProc``, which is a string specifying the name of the proc
-  ## that this future belongs to, is a good habit as it helps with debugging.
-  result = FutureVar[T](newFuture[T](fromProc))
-
-proc clean*[T](future: FutureVar[T]) =
-  ## Resets the ``finished`` status of ``future``.
-  Future[T](future).finished = false
-  Future[T](future).error = nil
-
-proc checkFinished[T](future: Future[T]) =
-  ## Checks whether `future` is finished. If it is then raises a
-  ## ``FutureError``.
-  when not defined(release):
-    if future.finished:
-      var msg = ""
-      msg.add("An attempt was made to complete a Future more than once. ")
-      msg.add("Details:")
-      msg.add("\n  Future ID: " & $future.id)
-      msg.add("\n  Created in proc: " & future.fromProc)
-      msg.add("\n  Stack trace to moment of creation:")
-      msg.add("\n" & indent(future.stackTrace.strip(), 4))
-      when T is string:
-        msg.add("\n  Contents (string): ")
-        msg.add("\n" & indent(future.value.repr, 4))
-      msg.add("\n  Stack trace to moment of secondary completion:")
-      msg.add("\n" & indent(getStackTrace().strip(), 4))
-      var err = newException(FutureError, msg)
-      err.cause = future
-      raise err
-
-proc complete*[T](future: Future[T], val: T) =
-  ## Completes ``future`` with value ``val``.
-  #assert(not future.finished, "Future already finished, cannot finish twice.")
-  checkFinished(future)
-  assert(future.error == nil)
-  future.value = val
-  future.finished = true
-  if future.cb != nil:
-    future.cb()
-
-proc complete*(future: Future[void]) =
-  ## Completes a void ``future``.
-  #assert(not future.finished, "Future already finished, cannot finish twice.")
-  checkFinished(future)
-  assert(future.error == nil)
-  future.finished = true
-  if future.cb != nil:
-    future.cb()
-
-proc complete*[T](future: FutureVar[T]) =
-  ## Completes a ``FutureVar``.
-  template fut: expr = Future[T](future)
-  checkFinished(fut)
-  assert(fut.error == nil)
-  fut.finished = true
-  if fut.cb != nil:
-    fut.cb()
-
-proc fail*[T](future: Future[T], error: ref Exception) =
-  ## Completes ``future`` with ``error``.
-  #assert(not future.finished, "Future already finished, cannot finish twice.")
-  checkFinished(future)
-  future.finished = true
-  future.error = error
-  future.errorStackTrace =
-    if getStackTrace(error) == "": getStackTrace() else: getStackTrace(error)
-  if future.cb != nil:
-    future.cb()
-  else:
-    # This is to prevent exceptions from being silently ignored when a future
-    # is discarded.
-    # TODO: This may turn out to be a bad idea.
-    # Turns out this is a bad idea.
-    #raise error
-    discard
-
-proc `callback=`*(future: FutureBase, cb: proc () {.closure,gcsafe.}) =
-  ## Sets the callback proc to be called when the future completes.
-  ##
-  ## If future has already completed then ``cb`` will be called immediately.
-  ##
-  ## **Note**: You most likely want the other ``callback`` setter which
-  ## passes ``future`` as a param to the callback.
-  future.cb = cb
-  if future.finished:
-    callSoon(future.cb)
-
-proc `callback=`*[T](future: Future[T],
-    cb: proc (future: Future[T]) {.closure,gcsafe.}) =
-  ## Sets the callback proc to be called when the future completes.
-  ##
-  ## If future has already completed then ``cb`` will be called immediately.
-  future.callback = proc () = cb(future)
-
-proc injectStacktrace[T](future: Future[T]) =
-  # TODO: Come up with something better.
-  when not defined(release):
-    var msg = ""
-    msg.add("\n  " & future.fromProc & "'s lead up to read of failed Future:")
-
-    if not future.errorStackTrace.isNil and future.errorStackTrace != "":
-      msg.add("\n" & indent(future.errorStackTrace.strip(), 4))
-    else:
-      msg.add("\n    Empty or nil stack trace.")
-    future.error.msg.add(msg)
-
-proc read*[T](future: Future[T]): T =
-  ## Retrieves the value of ``future``. Future must be finished otherwise
-  ## this function will fail with a ``ValueError`` exception.
-  ##
-  ## If the result of the future is an error then that error will be raised.
-  if future.finished:
-    if future.error != nil:
-      injectStacktrace(future)
-      raise future.error
-    when T isnot void:
-      return future.value
-  else:
-    # TODO: Make a custom exception type for this?
-    raise newException(ValueError, "Future still in progress.")
-
-proc readError*[T](future: Future[T]): ref Exception =
-  ## Retrieves the exception stored in ``future``.
-  ##
-  ## An ``ValueError`` exception will be thrown if no exception exists
-  ## in the specified Future.
-  if future.error != nil: return future.error
-  else:
-    raise newException(ValueError, "No error in future.")
-
-proc mget*[T](future: FutureVar[T]): var T =
-  ## Returns a mutable value stored in ``future``.
-  ##
-  ## Unlike ``read``, this function will not raise an exception if the
-  ## Future has not been finished.
-  result = Future[T](future).value
-
-proc finished*[T](future: Future[T]): bool =
-  ## Determines whether ``future`` has completed.
-  ##
-  ## ``True`` may indicate an error or a value. Use ``failed`` to distinguish.
-  future.finished
-
-proc failed*(future: FutureBase): bool =
-  ## Determines whether ``future`` completed with an error.
-  return future.error != nil
-
-proc asyncCheck*[T](future: Future[T]) =
-  ## Sets a callback on ``future`` which raises an exception if the future
-  ## finished with an error.
-  ##
-  ## This should be used instead of ``discard`` to discard void futures.
-  future.callback =
-    proc () =
-      if future.failed:
-        injectStacktrace(future)
-        raise future.error
-
-proc `and`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
-  ## Returns a future which will complete once both ``fut1`` and ``fut2``
-  ## complete.
-  var retFuture = newFuture[void]("asyncdispatch.`and`")
-  fut1.callback =
-    proc () =
-      if fut2.finished: retFuture.complete()
-  fut2.callback =
-    proc () =
-      if fut1.finished: retFuture.complete()
-  return retFuture
-
-proc `or`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
-  ## Returns a future which will complete once either ``fut1`` or ``fut2``
-  ## complete.
-  var retFuture = newFuture[void]("asyncdispatch.`or`")
-  proc cb() =
-    if not retFuture.finished: retFuture.complete()
-  fut1.callback = cb
-  fut2.callback = cb
-  return retFuture
-
-proc all*[T](futs: varargs[Future[T]]): auto =
-  ## Returns a future which will complete once
-  ## all futures in ``futs`` complete.
-  ##
-  ## If the awaited futures are not ``Future[void]``, the returned future
-  ## will hold the values of all awaited futures in a sequence.
-  ##
-  ## If the awaited futures *are* ``Future[void]``,
-  ## this proc returns ``Future[void]``.
-
-  when T is void:
-    var
-      retFuture = newFuture[void]("asyncdispatch.all")
-      completedFutures = 0
-
-    let totalFutures = len(futs)
-
-    for fut in futs:
-      fut.callback = proc(f: Future[T]) =
-        inc(completedFutures)
-
-        if completedFutures == totalFutures:
-          retFuture.complete()
-
-    return retFuture
-
-  else:
-    var
-      retFuture = newFuture[seq[T]]("asyncdispatch.all")
-      retValues = newSeq[T](len(futs))
-      completedFutures = 0
-
-    for i, fut in futs:
-      proc setCallback(i: int) =
-        fut.callback = proc(f: Future[T]) =
-          retValues[i] = f.read()
-          inc(completedFutures)
-
-          if completedFutures == len(retValues):
-            retFuture.complete(retValues)
-
-      setCallback(i)
-
-    return retFuture
+include includes/asyncfutures
 
 type
   PDispatcherBase = ref object of RootRef
@@ -500,48 +261,49 @@ when defined(windows) or defined(nimdoc):
       raise newException(ValueError,
         "No handles or timers registered in dispatcher.")
 
-    let at = p.adjustedTimeout(timeout)
-    var llTimeout =
-      if at == -1: winlean.INFINITE
-      else: at.int32
-
-    var lpNumberOfBytesTransferred: Dword
-    var lpCompletionKey: ULONG_PTR
-    var customOverlapped: PCustomOverlapped
-    let res = getQueuedCompletionStatus(p.ioPort,
-        addr lpNumberOfBytesTransferred, addr lpCompletionKey,
-        cast[ptr POVERLAPPED](addr customOverlapped), llTimeout).bool
-
-    # http://stackoverflow.com/a/12277264/492186
-    # TODO: http://www.serverframework.com/handling-multiple-pending-socket-read-and-write-operations.html
-    if res:
-      # This is useful for ensuring the reliability of the overlapped struct.
-      assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
-
-      customOverlapped.data.cb(customOverlapped.data.fd,
-          lpNumberOfBytesTransferred, OSErrorCode(-1))
-
-      # If cell.data != nil, then system.protect(rawEnv(cb)) was called,
-      # so we need to dispose our `cb` environment, because it is not needed
-      # anymore.
-      if customOverlapped.data.cell.data != nil:
-        system.dispose(customOverlapped.data.cell)
-
-      GC_unref(customOverlapped)
-    else:
-      let errCode = osLastError()
-      if customOverlapped != nil:
+    if p.handles.len != 0:
+      let at = p.adjustedTimeout(timeout)
+      var llTimeout =
+        if at == -1: winlean.INFINITE
+        else: at.int32
+
+      var lpNumberOfBytesTransferred: Dword
+      var lpCompletionKey: ULONG_PTR
+      var customOverlapped: PCustomOverlapped
+      let res = getQueuedCompletionStatus(p.ioPort,
+          addr lpNumberOfBytesTransferred, addr lpCompletionKey,
+          cast[ptr POVERLAPPED](addr customOverlapped), llTimeout).bool
+
+      # http://stackoverflow.com/a/12277264/492186
+      # TODO: http://www.serverframework.com/handling-multiple-pending-socket-read-and-write-operations.html
+      if res:
+        # This is useful for ensuring the reliability of the overlapped struct.
         assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
+
         customOverlapped.data.cb(customOverlapped.data.fd,
-            lpNumberOfBytesTransferred, errCode)
+            lpNumberOfBytesTransferred, OSErrorCode(-1))
+
+        # If cell.data != nil, then system.protect(rawEnv(cb)) was called,
+        # so we need to dispose our `cb` environment, because it is not needed
+        # anymore.
         if customOverlapped.data.cell.data != nil:
           system.dispose(customOverlapped.data.cell)
+
         GC_unref(customOverlapped)
       else:
-        if errCode.int32 == WAIT_TIMEOUT:
-          # Timed out
-          discard
-        else: raiseOSError(errCode)
+        let errCode = osLastError()
+        if customOverlapped != nil:
+          assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
+          customOverlapped.data.cb(customOverlapped.data.fd,
+              lpNumberOfBytesTransferred, errCode)
+          if customOverlapped.data.cell.data != nil:
+            system.dispose(customOverlapped.data.cell)
+          GC_unref(customOverlapped)
+        else:
+          if errCode.int32 == WAIT_TIMEOUT:
+            # Timed out
+            discard
+          else: raiseOSError(errCode)
 
     # Timer processing.
     processTimers(p)
@@ -749,8 +511,8 @@ when defined(windows) or defined(nimdoc):
           retFuture.complete("")
     return retFuture
 
-  proc recvInto*(socket: AsyncFD, buf: cstring, size: int,
-                flags = {SocketFlag.SafeDisconn}): Future[int] =
+  proc recvInto*(socket: AsyncFD, buf: pointer, size: int,
+                 flags = {SocketFlag.SafeDisconn}): Future[int] =
     ## Reads **up to** ``size`` bytes from ``socket`` into ``buf``, which must
     ## at least be of that size. Returned future will complete once all the
     ## data requested is read, a part of the data has been read, or the socket
@@ -773,7 +535,7 @@ when defined(windows) or defined(nimdoc):
 
     #buf[] = '\0'
     var dataBuf: TWSABuf
-    dataBuf.buf = buf
+    dataBuf.buf = cast[cstring](buf)
     dataBuf.len = size.ULONG
 
     var bytesReceived: Dword
@@ -819,16 +581,18 @@ when defined(windows) or defined(nimdoc):
           retFuture.complete(bytesReceived)
     return retFuture
 
-  proc send*(socket: AsyncFD, data: string,
+  proc send*(socket: AsyncFD, buf: pointer, size: int,
              flags = {SocketFlag.SafeDisconn}): Future[void] =
-    ## Sends ``data`` to ``socket``. The returned future will complete once all
+    ## Sends ``size`` bytes from ``buf`` to ``socket``. The returned future will complete once all
     ## data has been sent.
+    ## **WARNING**: Use it with caution. If ``buf`` refers to GC'ed object, you must use GC_ref/GC_unref calls
+    ## to avoid early freeing of the buffer
     verifyPresence(socket)
     var retFuture = newFuture[void]("send")
 
     var dataBuf: TWSABuf
-    dataBuf.buf = data # since this is not used in a callback, this is fine
-    dataBuf.len = data.len.ULONG
+    dataBuf.buf = cast[cstring](buf)
+    dataBuf.len = size.ULONG
 
     var bytesReceived, lowFlags: Dword
     var ol = PCustomOverlapped()
@@ -1281,43 +1045,45 @@ else:
 
   proc poll*(timeout = 500) =
     let p = getGlobalDispatcher()
-    for info in p.selector.select(p.adjustedTimeout(timeout)):
-      let data = PData(info.key.data)
-      assert data.fd == info.key.fd.AsyncFD
-      #echo("In poll ", data.fd.cint)
-      # There may be EvError here, but we handle them in callbacks,
-      # so that exceptions can be raised from `send(...)` and
-      # `recv(...)` routines.
-
-      if EvRead in info.events:
-        # Callback may add items to ``data.readCBs`` which causes issues if
-        # we are iterating over ``data.readCBs`` at the same time. We therefore
-        # make a copy to iterate over.
-        let currentCBs = data.readCBs
-        data.readCBs = @[]
-        for cb in currentCBs:
-          if not cb(data.fd):
-            # Callback wants to be called again.
-            data.readCBs.add(cb)
-
-      if EvWrite in info.events:
-        let currentCBs = data.writeCBs
-        data.writeCBs = @[]
-        for cb in currentCBs:
-          if not cb(data.fd):
-            # Callback wants to be called again.
-            data.writeCBs.add(cb)
-
-      if info.key in p.selector:
-        var newEvents: set[Event]
-        if data.readCBs.len != 0: newEvents = {EvRead}
-        if data.writeCBs.len != 0: newEvents = newEvents + {EvWrite}
-        if newEvents != info.key.events:
-          update(data.fd, newEvents)
-      else:
-        # FD no longer a part of the selector. Likely been closed
-        # (e.g. socket disconnected).
-        discard
+
+    if p.selector.len > 0:
+      for info in p.selector.select(p.adjustedTimeout(timeout)):
+        let data = PData(info.key.data)
+        assert data.fd == info.key.fd.AsyncFD
+        #echo("In poll ", data.fd.cint)
+        # There may be EvError here, but we handle them in callbacks,
+        # so that exceptions can be raised from `send(...)` and
+        # `recv(...)` routines.
+
+        if EvRead in info.events:
+          # Callback may add items to ``data.readCBs`` which causes issues if
+          # we are iterating over ``data.readCBs`` at the same time. We therefore
+          # make a copy to iterate over.
+          let currentCBs = data.readCBs
+          data.readCBs = @[]
+          for cb in currentCBs:
+            if not cb(data.fd):
+              # Callback wants to be called again.
+              data.readCBs.add(cb)
+
+        if EvWrite in info.events:
+          let currentCBs = data.writeCBs
+          data.writeCBs = @[]
+          for cb in currentCBs:
+            if not cb(data.fd):
+              # Callback wants to be called again.
+              data.writeCBs.add(cb)
+
+        if info.key in p.selector:
+          var newEvents: set[Event]
+          if data.readCBs.len != 0: newEvents = {EvRead}
+          if data.writeCBs.len != 0: newEvents = newEvents + {EvWrite}
+          if newEvents != info.key.events:
+            update(data.fd, newEvents)
+        else:
+          # FD no longer a part of the selector. Likely been closed
+          # (e.g. socket disconnected).
+          discard
 
     # Timer processing.
     processTimers(p)
@@ -1398,7 +1164,7 @@ else:
     addRead(socket, cb)
     return retFuture
 
-  proc recvInto*(socket: AsyncFD, buf: cstring, size: int,
+  proc recvInto*(socket: AsyncFD, buf: pointer, size: int,
                   flags = {SocketFlag.SafeDisconn}): Future[int] =
     var retFuture = newFuture[int]("recvInto")
 
@@ -1422,7 +1188,7 @@ else:
     addRead(socket, cb)
     return retFuture
 
-  proc send*(socket: AsyncFD, data: string,
+  proc send*(socket: AsyncFD, buf: pointer, size: int,
              flags = {SocketFlag.SafeDisconn}): Future[void] =
     var retFuture = newFuture[void]("send")
 
@@ -1430,8 +1196,8 @@ else:
 
     proc cb(sock: AsyncFD): bool =
       result = true
-      let netSize = data.len-written
-      var d = data.cstring
+      let netSize = size-written
+      var d = cast[cstring](buf)
       let res = send(sock.SocketHandle, addr d[written], netSize.cint,
                      MSG_NOSIGNAL)
       if res < 0:
@@ -1576,368 +1342,31 @@ proc accept*(socket: AsyncFD,
         retFut.complete(future.read.client)
   return retFut
 
-# -- Await Macro
+proc send*(socket: AsyncFD, data: string,
+           flags = {SocketFlag.SafeDisconn}): Future[void] =
+  ## Sends ``data`` to ``socket``. The returned future will complete once all
+  ## data has been sent.
+  var retFuture = newFuture[void]("send")
 
-proc skipUntilStmtList(node: NimNode): NimNode {.compileTime.} =
-  # Skips a nest of StmtList's.
-  result = node
-  if node[0].kind == nnkStmtList:
-    result = skipUntilStmtList(node[0])
-
-proc skipStmtList(node: NimNode): NimNode {.compileTime.} =
-  result = node
-  if node[0].kind == nnkStmtList:
-    result = node[0]
-
-template createCb(retFutureSym, iteratorNameSym,
-                   name: untyped) =
-  var nameIterVar = iteratorNameSym
-  #{.push stackTrace: off.}
-  proc cb {.closure,gcsafe.} =
-    try:
-      if not nameIterVar.finished:
-        var next = nameIterVar()
-        if next == nil:
-          assert retFutureSym.finished, "Async procedure's (" &
-                 name & ") return Future was not finished."
-        else:
-          next.callback = cb
-    except:
-      if retFutureSym.finished:
-        # Take a look at tasyncexceptions for the bug which this fixes.
-        # That test explains it better than I can here.
-        raise
-      else:
-        retFutureSym.fail(getCurrentException())
-  cb()
-  #{.pop.}
-proc generateExceptionCheck(futSym,
-    tryStmt, rootReceiver, fromNode: NimNode): NimNode {.compileTime.} =
-  if tryStmt.kind == nnkNilLit:
-    result = rootReceiver
-  else:
-    var exceptionChecks: seq[tuple[cond, body: NimNode]] = @[]
-    let errorNode = newDotExpr(futSym, newIdentNode("error"))
-    for i in 1 .. <tryStmt.len:
-      let exceptBranch = tryStmt[i]
-      if exceptBranch[0].kind == nnkStmtList:
-        exceptionChecks.add((newIdentNode("true"), exceptBranch[0]))
-      else:
-        var exceptIdentCount = 0
-        var ifCond: NimNode
-        for i in 0 .. <exceptBranch.len:
-          let child = exceptBranch[i]
-          if child.kind == nnkIdent:
-            let cond = infix(errorNode, "of", child)
-            if exceptIdentCount == 0:
-              ifCond = cond
-            else:
-              ifCond = infix(ifCond, "or", cond)
-          else:
-            break
-          exceptIdentCount.inc
-
-        expectKind(exceptBranch[exceptIdentCount], nnkStmtList)
-        exceptionChecks.add((ifCond, exceptBranch[exceptIdentCount]))
-    # -> -> else: raise futSym.error
-    exceptionChecks.add((newIdentNode("true"),
-        newNimNode(nnkRaiseStmt).add(errorNode)))
-    # Read the future if there is no error.
-    # -> else: futSym.read
-    let elseNode = newNimNode(nnkElse, fromNode)
-    elseNode.add newNimNode(nnkStmtList, fromNode)
-    elseNode[0].add rootReceiver
-
-    let ifBody = newStmtList()
-    ifBody.add newCall(newIdentNode("setCurrentException"), errorNode)
-    ifBody.add newIfStmt(exceptionChecks)
-    ifBody.add newCall(newIdentNode("setCurrentException"), newNilLit())
-
-    result = newIfStmt(
-      (newDotExpr(futSym, newIdentNode("failed")), ifBody)
-    )
-    result.add elseNode
-
-template useVar(result: var NimNode, futureVarNode: NimNode, valueReceiver,
-                rootReceiver: expr, fromNode: NimNode) =
-  ## Params:
-  ##    futureVarNode: The NimNode which is a symbol identifying the Future[T]
-  ##                   variable to yield.
-  ##    fromNode: Used for better debug information (to give context).
-  ##    valueReceiver: The node which defines an expression that retrieves the
-  ##                   future's value.
-  ##
-  ##    rootReceiver: ??? TODO
-  # -> yield future<x>
-  result.add newNimNode(nnkYieldStmt, fromNode).add(futureVarNode)
-  # -> future<x>.read
-  valueReceiver = newDotExpr(futureVarNode, newIdentNode("read"))
-  result.add generateExceptionCheck(futureVarNode, tryStmt, rootReceiver,
-      fromNode)
-
-template createVar(result: var NimNode, futSymName: string,
-                   asyncProc: NimNode,
-                   valueReceiver, rootReceiver: expr,
-                   fromNode: NimNode) =
-  result = newNimNode(nnkStmtList, fromNode)
-  var futSym = genSym(nskVar, "future")
-  result.add newVarStmt(futSym, asyncProc) # -> var future<x> = y
-  useVar(result, futSym, valueReceiver, rootReceiver, fromNode)
-
-proc processBody(node, retFutureSym: NimNode,
-                 subTypeIsVoid: bool,
-                 tryStmt: NimNode): NimNode {.compileTime.} =
-  #echo(node.treeRepr)
-  result = node
-  case node.kind
-  of nnkReturnStmt:
-    result = newNimNode(nnkStmtList, node)
-    if node[0].kind == nnkEmpty:
-      if not subTypeIsVoid:
-        result.add newCall(newIdentNode("complete"), retFutureSym,
-            newIdentNode("result"))
-      else:
-        result.add newCall(newIdentNode("complete"), retFutureSym)
-    else:
-      let x = node[0].processBody(retFutureSym, subTypeIsVoid, tryStmt)
-      if x.kind == nnkYieldStmt: result.add x
-      else:
-        result.add newCall(newIdentNode("complete"), retFutureSym, x)
-
-    result.add newNimNode(nnkReturnStmt, node).add(newNilLit())
-    return # Don't process the children of this return stmt
-  of nnkCommand, nnkCall:
-    if node[0].kind == nnkIdent and node[0].ident == !"await":
-      case node[1].kind
-      of nnkIdent, nnkInfix, nnkDotExpr:
-        # await x
-        # await x or y
-        result = newNimNode(nnkYieldStmt, node).add(node[1]) # -> yield x
-      of nnkCall, nnkCommand:
-        # await foo(p, x)
-        # await foo p, x
-        var futureValue: NimNode
-        result.createVar("future" & $node[1][0].toStrLit, node[1], futureValue,
-                  futureValue, node)
+  var copiedData = data
+  GC_ref(copiedData) # we need to protect data until send operation is completed
+               # or failed.
+
+  let sendFut = socket.send(addr copiedData[0], data.len, flags)
+  sendFut.callback =
+    proc () =
+      GC_unref(copiedData)
+      if sendFut.failed:
+        retFuture.fail(sendFut.error)
       else:
-        error("Invalid node kind in 'await', got: " & $node[1].kind)
-    elif node.len > 1 and node[1].kind == nnkCommand and
-         node[1][0].kind == nnkIdent and node[1][0].ident == !"await":
-      # foo await x
-      var newCommand = node
-      result.createVar("future" & $node[0].toStrLit, node[1][1], newCommand[1],
-                newCommand, node)
-
-  of nnkVarSection, nnkLetSection:
-    case node[0][2].kind
-    of nnkCommand:
-      if node[0][2][0].kind == nnkIdent and node[0][2][0].ident == !"await":
-        # var x = await y
-        var newVarSection = node # TODO: Should this use copyNimNode?
-        result.createVar("future" & $node[0][0].ident, node[0][2][1],
-          newVarSection[0][2], newVarSection, node)
-    else: discard
-  of nnkAsgn:
-    case node[1].kind
-    of nnkCommand:
-      if node[1][0].ident == !"await":
-        # x = await y
-        var newAsgn = node
-        result.createVar("future" & $node[0].toStrLit, node[1][1], newAsgn[1], newAsgn, node)
-    else: discard
-  of nnkDiscardStmt:
-    # discard await x
-    if node[0].kind == nnkCommand and node[0][0].kind == nnkIdent and
-          node[0][0].ident == !"await":
-      var newDiscard = node
-      result.createVar("futureDiscard_" & $toStrLit(node[0][1]), node[0][1],
-                newDiscard[0], newDiscard, node)
-  of nnkTryStmt:
-    # try: await x; except: ...
-    result = newNimNode(nnkStmtList, node)
-    template wrapInTry(n, tryBody: expr) =
-      var temp = n
-      n[0] = tryBody
-      tryBody = temp
-
-      # Transform ``except`` body.
-      # TODO: Could we perform some ``await`` transformation here to get it
-      # working in ``except``?
-      tryBody[1] = processBody(n[1], retFutureSym, subTypeIsVoid, nil)
-
-    proc processForTry(n: NimNode, i: var int,
-                       res: NimNode): bool {.compileTime.} =
-      ## Transforms the body of the tryStmt. Does not transform the
-      ## body in ``except``.
-      ## Returns true if the tryStmt node was transformed into an ifStmt.
-      result = false
-      var skipped = n.skipStmtList()
-      while i < skipped.len:
-        var processed = processBody(skipped[i], retFutureSym,
-                                    subTypeIsVoid, n)
-
-        # Check if we transformed the node into an exception check.
-        # This suggests skipped[i] contains ``await``.
-        if processed.kind != skipped[i].kind or processed.len != skipped[i].len:
-          processed = processed.skipUntilStmtList()
-          expectKind(processed, nnkStmtList)
-          expectKind(processed[2][1], nnkElse)
-          i.inc
-
-          if not processForTry(n, i, processed[2][1][0]):
-            # We need to wrap the nnkElse nodes back into a tryStmt.
-            # As they are executed if an exception does not happen
-            # inside the awaited future.
-            # The following code will wrap the nodes inside the
-            # original tryStmt.
-            wrapInTry(n, processed[2][1][0])
-
-          res.add processed
-          result = true
-        else:
-          res.add skipped[i]
-          i.inc
-    var i = 0
-    if not processForTry(node, i, result):
-      # If the tryStmt hasn't been transformed we can just put the body
-      # back into it.
-      wrapInTry(node, result)
-    return
-  else: discard
-
-  for i in 0 .. <result.len:
-    result[i] = processBody(result[i], retFutureSym, subTypeIsVoid, nil)
-
-proc getName(node: NimNode): string {.compileTime.} =
-  case node.kind
-  of nnkPostfix:
-    return $node[1].ident
-  of nnkIdent:
-    return $node.ident
-  of nnkEmpty:
-    return "anonymous"
-  else:
-    error("Unknown name.")
-
-proc asyncSingleProc(prc: NimNode): NimNode {.compileTime.} =
-  ## This macro transforms a single procedure into a closure iterator.
-  ## The ``async`` macro supports a stmtList holding multiple async procedures.
-  if prc.kind notin {nnkProcDef, nnkLambda}:
-      error("Cannot transform this node kind into an async proc." &
-            " Proc definition or lambda node expected.")
-
-  hint("Processing " & prc[0].getName & " as an async proc.")
-
-  let returnType = prc[3][0]
-  var baseType: NimNode
-  # Verify that the return type is a Future[T]
-  if returnType.kind == nnkBracketExpr:
-    let fut = repr(returnType[0])
-    if fut != "Future":
-      error("Expected return type of 'Future' got '" & fut & "'")
-    baseType = returnType[1]
-  elif returnType.kind in nnkCallKinds and $returnType[0] == "[]":
-    let fut = repr(returnType[1])
-    if fut != "Future":
-      error("Expected return type of 'Future' got '" & fut & "'")
-    baseType = returnType[2]
-  elif returnType.kind == nnkEmpty:
-    baseType = returnType
-  else:
-    error("Expected return type of 'Future' got '" & repr(returnType) & "'")
-
-  let subtypeIsVoid = returnType.kind == nnkEmpty or
-        (baseType.kind == nnkIdent and returnType[1].ident == !"void")
-
-  var outerProcBody = newNimNode(nnkStmtList, prc[6])
-
-  # -> var retFuture = newFuture[T]()
-  var retFutureSym = genSym(nskVar, "retFuture")
-  var subRetType =
-    if returnType.kind == nnkEmpty: newIdentNode("void")
-    else: baseType
-  outerProcBody.add(
-    newVarStmt(retFutureSym,
-      newCall(
-        newNimNode(nnkBracketExpr, prc[6]).add(
-          newIdentNode(!"newFuture"), # TODO: Strange bug here? Remove the `!`.
-          subRetType),
-      newLit(prc[0].getName)))) # Get type from return type of this proc
-
-  # -> iterator nameIter(): FutureBase {.closure.} =
-  # ->   {.push warning[resultshadowed]: off.}
-  # ->   var result: T
-  # ->   {.pop.}
-  # ->   <proc_body>
-  # ->   complete(retFuture, result)
-  var iteratorNameSym = genSym(nskIterator, $prc[0].getName & "Iter")
-  var procBody = prc[6].processBody(retFutureSym, subtypeIsVoid, nil)
-  # don't do anything with forward bodies (empty)
-  if procBody.kind != nnkEmpty:
-    if not subtypeIsVoid:
-      procBody.insert(0, newNimNode(nnkPragma).add(newIdentNode("push"),
-        newNimNode(nnkExprColonExpr).add(newNimNode(nnkBracketExpr).add(
-          newIdentNode("warning"), newIdentNode("resultshadowed")),
-        newIdentNode("off")))) # -> {.push warning[resultshadowed]: off.}
-
-      procBody.insert(1, newNimNode(nnkVarSection, prc[6]).add(
-        newIdentDefs(newIdentNode("result"), baseType))) # -> var result: T
-
-      procBody.insert(2, newNimNode(nnkPragma).add(
-        newIdentNode("pop"))) # -> {.pop.})
-
-      procBody.add(
-        newCall(newIdentNode("complete"),
-          retFutureSym, newIdentNode("result"))) # -> complete(retFuture, result)
-    else:
-      # -> complete(retFuture)
-      procBody.add(newCall(newIdentNode("complete"), retFutureSym))
-
-    var closureIterator = newProc(iteratorNameSym, [newIdentNode("FutureBase")],
-                                  procBody, nnkIteratorDef)
-    closureIterator[4] = newNimNode(nnkPragma, prc[6]).add(newIdentNode("closure"))
-    outerProcBody.add(closureIterator)
-
-    # -> createCb(retFuture)
-    #var cbName = newIdentNode("cb")
-    var procCb = getAst createCb(retFutureSym, iteratorNameSym,
-                         newStrLitNode(prc[0].getName))
-    outerProcBody.add procCb
-
-    # -> return retFuture
-    outerProcBody.add newNimNode(nnkReturnStmt, prc[6][prc[6].len-1]).add(retFutureSym)
-
-  result = prc
-
-  # Remove the 'async' pragma.
-  for i in 0 .. <result[4].len:
-    if result[4][i].kind == nnkIdent and result[4][i].ident == !"async":
-      result[4].del(i)
-  result[4] = newEmptyNode()
-  if subtypeIsVoid:
-    # Add discardable pragma.
-    if returnType.kind == nnkEmpty:
-      # Add Future[void]
-      result[3][0] = parseExpr("Future[void]")
-  if procBody.kind != nnkEmpty:
-    result[6] = outerProcBody
-  #echo(treeRepr(result))
-  #if prc[0].getName == "testInfix":
-  #  echo(toStrLit(result))
-
-macro async*(prc: untyped): untyped =
-  ## Macro which processes async procedures into the appropriate
-  ## iterators and yield statements.
-  if prc.kind == nnkStmtList:
-    for oneProc in prc:
-      result = newStmtList()
-      result.add asyncSingleProc(oneProc)
-  else:
-    result = asyncSingleProc(prc)
-  when defined(nimDumpAsync):
-    echo repr result
+        retFuture.complete()
+
+  return retFuture
 
-proc recvLine*(socket: AsyncFD): Future[string] {.async.} =
+# -- Await Macro
+include asyncmacro
+
+proc recvLine*(socket: AsyncFD): Future[string] {.async, deprecated.} =
   ## Reads a line of data from ``socket``. Returned future will complete once
   ## a full line is read or an error occurs.
   ##
@@ -1955,6 +1384,8 @@ proc recvLine*(socket: AsyncFD): Future[string] {.async.} =
   ##
   ## **Note**: This procedure is mostly used for testing. You likely want to
   ## use ``asyncnet.recvLine`` instead.
+  ##
+  ## **Deprecated since version 0.15.0**: Use ``asyncnet.recvLine()`` instead.
 
   template addNLIfEmpty(): stmt =
     if result.len == 0:
diff --git a/lib/pure/asyncfile.nim b/lib/pure/asyncfile.nim
index 5df606ea8..ffe6a391e 100644
--- a/lib/pure/asyncfile.nim
+++ b/lib/pure/asyncfile.nim
@@ -24,6 +24,8 @@
 
 import asyncdispatch, os
 
+# TODO: Fix duplication introduced by PR #4683.
+
 when defined(windows) or defined(nimdoc):
   import winlean
 else:
@@ -112,6 +114,80 @@ proc openAsync*(filename: string, mode = fmRead): AsyncFile =
 
     register(result.fd)
 
+proc readBuffer*(f: AsyncFile, buf: pointer, size: int): Future[int] =
+  ## Read ``size`` bytes from the specified file asynchronously starting at
+  ## the current position of the file pointer.
+  ##
+  ## If the file pointer is past the end of the file then an empty string is
+  ## returned.
+  var retFuture = newFuture[int]("asyncfile.readBuffer")
+
+  when defined(windows) or defined(nimdoc):
+    var ol = PCustomOverlapped()
+    GC_ref(ol)
+    ol.data = CompletionData(fd: f.fd, cb:
+      proc (fd: AsyncFD, bytesCount: Dword, errcode: OSErrorCode) =
+        if not retFuture.finished:
+          if errcode == OSErrorCode(-1):
+            assert bytesCount > 0
+            assert bytesCount <= size
+            f.offset.inc bytesCount
+            retFuture.complete(bytesCount)
+          else:
+            if errcode.int32 == ERROR_HANDLE_EOF:
+              retFuture.complete(0)
+            else:
+              retFuture.fail(newException(OSError, osErrorMsg(errcode)))
+    )
+    ol.offset = DWord(f.offset and 0xffffffff)
+    ol.offsetHigh = DWord(f.offset shr 32)
+
+    # According to MSDN we're supposed to pass nil to lpNumberOfBytesRead.
+    let ret = readFile(f.fd.Handle, buf, size.int32, nil,
+                       cast[POVERLAPPED](ol))
+    if not ret.bool:
+      let err = osLastError()
+      if err.int32 != ERROR_IO_PENDING:
+        GC_unref(ol)
+        retFuture.fail(newException(OSError, osErrorMsg(err)))
+    else:
+      # Request completed immediately.
+      var bytesRead: DWord
+      let overlappedRes = getOverlappedResult(f.fd.Handle,
+          cast[POverlapped](ol), bytesRead, false.WinBool)
+      if not overlappedRes.bool:
+        let err = osLastError()
+        if err.int32 == ERROR_HANDLE_EOF:
+          retFuture.complete(0)
+        else:
+          retFuture.fail(newException(OSError, osErrorMsg(osLastError())))
+      else:
+        assert bytesRead > 0
+        assert bytesRead <= size
+        f.offset.inc bytesRead
+        retFuture.complete(bytesRead)
+  else:
+    proc cb(fd: AsyncFD): bool =
+      result = true
+      let res = read(fd.cint, cast[cstring](buf), size.cint)
+      if res < 0:
+        let lastError = osLastError()
+        if lastError.int32 != EAGAIN:
+          retFuture.fail(newException(OSError, osErrorMsg(lastError)))
+        else:
+          result = false # We still want this callback to be called.
+      elif res == 0:
+        # EOF
+        retFuture.complete(0)
+      else:
+        f.offset.inc(res)
+        retFuture.complete(res)
+
+    if not cb(f.fd):
+      addRead(f.fd, cb)
+
+  return retFuture
+
 proc read*(f: AsyncFile, size: int): Future[string] =
   ## Read ``size`` bytes from the specified file asynchronously starting at
   ## the current position of the file pointer.
@@ -238,6 +314,73 @@ proc readAll*(f: AsyncFile): Future[string] {.async.} =
       return
     result.add data
 
+proc writeBuffer*(f: AsyncFile, buf: pointer, size: int): Future[void] =
+  ## Writes ``size`` bytes from ``buf`` to the file specified asynchronously.
+  ##
+  ## The returned Future will complete once all data has been written to the
+  ## specified file.
+  var retFuture = newFuture[void]("asyncfile.writeBuffer")
+  when defined(windows) or defined(nimdoc):
+    var ol = PCustomOverlapped()
+    GC_ref(ol)
+    ol.data = CompletionData(fd: f.fd, cb:
+      proc (fd: AsyncFD, bytesCount: DWord, errcode: OSErrorCode) =
+        if not retFuture.finished:
+          if errcode == OSErrorCode(-1):
+            assert bytesCount == size.int32
+            f.offset.inc(size)
+            retFuture.complete()
+          else:
+            retFuture.fail(newException(OSError, osErrorMsg(errcode)))
+    )
+    ol.offset = DWord(f.offset and 0xffffffff)
+    ol.offsetHigh = DWord(f.offset shr 32)
+
+    # According to MSDN we're supposed to pass nil to lpNumberOfBytesWritten.
+    let ret = writeFile(f.fd.Handle, buf, size.int32, nil,
+                       cast[POVERLAPPED](ol))
+    if not ret.bool:
+      let err = osLastError()
+      if err.int32 != ERROR_IO_PENDING:
+        GC_unref(ol)
+        retFuture.fail(newException(OSError, osErrorMsg(err)))
+    else:
+      # Request completed immediately.
+      var bytesWritten: DWord
+      let overlappedRes = getOverlappedResult(f.fd.Handle,
+          cast[POverlapped](ol), bytesWritten, false.WinBool)
+      if not overlappedRes.bool:
+        retFuture.fail(newException(OSError, osErrorMsg(osLastError())))
+      else:
+        assert bytesWritten == size.int32
+        f.offset.inc(size)
+        retFuture.complete()
+  else:
+    var written = 0
+
+    proc cb(fd: AsyncFD): bool =
+      result = true
+      let remainderSize = size-written
+      var cbuf = cast[cstring](buf)
+      let res = write(fd.cint, addr cbuf[written], remainderSize.cint)
+      if res < 0:
+        let lastError = osLastError()
+        if lastError.int32 != EAGAIN:
+          retFuture.fail(newException(OSError, osErrorMsg(lastError)))
+        else:
+          result = false # We still want this callback to be called.
+      else:
+        written.inc res
+        f.offset.inc res
+        if res != remainderSize:
+          result = false # We still have data to write.
+        else:
+          retFuture.complete()
+
+    if not cb(f.fd):
+      addWrite(f.fd, cb)
+  return retFuture
+
 proc write*(f: AsyncFile, data: string): Future[void] =
   ## Writes ``data`` to the file specified asynchronously.
   ##
diff --git a/lib/pure/asyncftpclient.nim b/lib/pure/asyncftpclient.nim
index fd899e080..019a18f55 100644
--- a/lib/pure/asyncftpclient.nim
+++ b/lib/pure/asyncftpclient.nim
@@ -281,7 +281,7 @@ proc getFile(ftp: AsyncFtpClient, file: File, total: BiggestInt,
   assertReply(await(ftp.expectReply()), "226")
 
 proc defaultOnProgressChanged*(total, progress: BiggestInt,
-    speed: float): Future[void] {.nimcall,gcsafe.} =
+    speed: float): Future[void] {.nimcall,gcsafe,procvar.} =
   ## Default FTP ``onProgressChanged`` handler. Does nothing.
   result = newFuture[void]()
   #echo(total, " ", progress, " ", speed)
@@ -354,6 +354,20 @@ proc store*(ftp: AsyncFtpClient, file, dest: string,
 
   await doUpload(ftp, destFile, onProgressChanged)
 
+proc rename*(ftp: AsyncFtpClient, nameFrom: string, nameTo: string) {.async.} =
+  ## Rename a file or directory on the remote FTP Server from current name
+  ## ``name_from`` to new name ``name_to``
+  assertReply(await ftp.send("RNFR " & name_from), "350")
+  assertReply(await ftp.send("RNTO " & name_to), "250")
+
+proc removeFile*(ftp: AsyncFtpClient, filename: string) {.async.} =
+  ## Delete a file ``filename`` on the remote FTP server
+  assertReply(await ftp.send("DELE " & filename), "250")
+
+proc removeDir*(ftp: AsyncFtpClient, dir: string) {.async.} =
+  ## Delete a directory ``dir`` on the remote FTP server
+  assertReply(await ftp.send("RMD " & dir), "250")
+
 proc newAsyncFtpClient*(address: string, port = Port(21),
     user, pass = ""): AsyncFtpClient =
   ## Creates a new ``AsyncFtpClient`` object.
@@ -373,6 +387,11 @@ when not defined(testing) and isMainModule:
     echo await ftp.listDirs()
     await ftp.store("payload.jpg", "payload.jpg")
     await ftp.retrFile("payload.jpg", "payload2.jpg")
+    await ftp.rename("payload.jpg", "payload_renamed.jpg")
+    await ftp.store("payload.jpg", "payload_remove.jpg")
+    await ftp.removeFile("payload_remove.jpg")
+    await ftp.createDir("deleteme")
+    await ftp.removeDir("deleteme")
     echo("Finished")
 
   waitFor main(ftp)
diff --git a/lib/pure/asynchttpserver.nim b/lib/pure/asynchttpserver.nim
index 6a7326e83..a658097f9 100644
--- a/lib/pure/asynchttpserver.nim
+++ b/lib/pure/asynchttpserver.nim
@@ -9,6 +9,12 @@
 
 ## This module implements a high performance asynchronous HTTP server.
 ##
+## This HTTP server has not been designed to be used in production, but
+## for testing applications locally. Because of this, when deploying your
+## application you should use a reverse proxy (for example nginx) instead of
+## allowing users to connect directly to this server.
+##
+##
 ## Examples
 ## --------
 ##
@@ -38,7 +44,7 @@ export httpcore except parseHeader
 type
   Request* = object
     client*: AsyncSocket # TODO: Separate this into a Response object?
-    reqMethod*: string
+    reqMethod*: HttpMethod
     headers*: HttpHeaders
     protocol*: tuple[orig: string, major, minor: int]
     url*: Uri
@@ -127,7 +133,14 @@ proc processClient(client: AsyncSocket, address: string,
     var i = 0
     for linePart in lineFut.mget.split(' '):
       case i
-      of 0: request.reqMethod.shallowCopy(linePart.normalize)
+      of 0:
+        try:
+          # TODO: this is likely slow.
+          request.reqMethod = parseEnum[HttpMethod]("http" & linePart)
+        except ValueError:
+          asyncCheck request.respond(Http400, "Invalid request method. Got: " &
+                                     linePart)
+          continue
       of 1: parseUri(linePart, request.url)
       of 2:
         try:
@@ -159,7 +172,7 @@ proc processClient(client: AsyncSocket, address: string,
         request.client.close()
         return
 
-    if request.reqMethod == "post":
+    if request.reqMethod == HttpPost:
       # Check for Expect header
       if request.headers.hasKey("Expect"):
         if "100-continue" in request.headers["Expect"]:
@@ -178,17 +191,12 @@ proc processClient(client: AsyncSocket, address: string,
       else:
         request.body = await client.recv(contentLength)
         assert request.body.len == contentLength
-    elif request.reqMethod == "post":
+    elif request.reqMethod == HttpPost:
       await request.respond(Http400, "Bad Request. No Content-Length.")
       continue
 
-    case request.reqMethod
-    of "get", "post", "head", "put", "delete", "trace", "options",
-       "connect", "patch":
-      await callback(request)
-    else:
-      await request.respond(Http400, "Invalid request method. Got: " &
-        request.reqMethod)
+    # Call the user's callback.
+    await callback(request)
 
     if "upgrade" in request.headers.getOrDefault("connection"):
       return
diff --git a/lib/pure/asyncmacro.nim b/lib/pure/asyncmacro.nim
new file mode 100644
index 000000000..3d004e84c
--- /dev/null
+++ b/lib/pure/asyncmacro.nim
@@ -0,0 +1,515 @@
+#
+#
+#            Nim's Runtime Library
+#        (c) Copyright 2015 Dominik Picheta
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## AsyncMacro
+## *************
+## `asyncdispatch` module depends on the `asyncmacro` module to work properly.
+
+import macros, strutils
+
+proc skipUntilStmtList(node: NimNode): NimNode {.compileTime.} =
+  # Skips a nest of StmtList's.
+  result = node
+  if node[0].kind == nnkStmtList:
+    result = skipUntilStmtList(node[0])
+
+proc skipStmtList(node: NimNode): NimNode {.compileTime.} =
+  result = node
+  if node[0].kind == nnkStmtList:
+    result = node[0]
+
+template createCb(retFutureSym, iteratorNameSym,
+                  name, futureVarCompletions: untyped) =
+  var nameIterVar = iteratorNameSym
+  #{.push stackTrace: off.}
+  proc cb {.closure,gcsafe.} =
+    try:
+      if not nameIterVar.finished:
+        var next = nameIterVar()
+        if next == nil:
+          assert retFutureSym.finished, "Async procedure's (" &
+                 name & ") return Future was not finished."
+        else:
+          next.callback = cb
+    except:
+      if retFutureSym.finished:
+        # Take a look at tasyncexceptions for the bug which this fixes.
+        # That test explains it better than I can here.
+        raise
+      else:
+        retFutureSym.fail(getCurrentException())
+
+      futureVarCompletions
+  cb()
+  #{.pop.}
+proc generateExceptionCheck(futSym,
+    tryStmt, rootReceiver, fromNode: NimNode): NimNode {.compileTime.} =
+  if tryStmt.kind == nnkNilLit:
+    result = rootReceiver
+  else:
+    var exceptionChecks: seq[tuple[cond, body: NimNode]] = @[]
+    let errorNode = newDotExpr(futSym, newIdentNode("error"))
+    for i in 1 .. <tryStmt.len:
+      let exceptBranch = tryStmt[i]
+      if exceptBranch[0].kind == nnkStmtList:
+        exceptionChecks.add((newIdentNode("true"), exceptBranch[0]))
+      else:
+        var exceptIdentCount = 0
+        var ifCond: NimNode
+        for i in 0 .. <exceptBranch.len:
+          let child = exceptBranch[i]
+          if child.kind == nnkIdent:
+            let cond = infix(errorNode, "of", child)
+            if exceptIdentCount == 0:
+              ifCond = cond
+            else:
+              ifCond = infix(ifCond, "or", cond)
+          else:
+            break
+          exceptIdentCount.inc
+
+        expectKind(exceptBranch[exceptIdentCount], nnkStmtList)
+        exceptionChecks.add((ifCond, exceptBranch[exceptIdentCount]))
+    # -> -> else: raise futSym.error
+    exceptionChecks.add((newIdentNode("true"),
+        newNimNode(nnkRaiseStmt).add(errorNode)))
+    # Read the future if there is no error.
+    # -> else: futSym.read
+    let elseNode = newNimNode(nnkElse, fromNode)
+    elseNode.add newNimNode(nnkStmtList, fromNode)
+    elseNode[0].add rootReceiver
+
+    let ifBody = newStmtList()
+    ifBody.add newCall(newIdentNode("setCurrentException"), errorNode)
+    ifBody.add newIfStmt(exceptionChecks)
+    ifBody.add newCall(newIdentNode("setCurrentException"), newNilLit())
+
+    result = newIfStmt(
+      (newDotExpr(futSym, newIdentNode("failed")), ifBody)
+    )
+    result.add elseNode
+
+template useVar(result: var NimNode, futureVarNode: NimNode, valueReceiver,
+                rootReceiver: expr, fromNode: NimNode) =
+  ## Params:
+  ##    futureVarNode: The NimNode which is a symbol identifying the Future[T]
+  ##                   variable to yield.
+  ##    fromNode: Used for better debug information (to give context).
+  ##    valueReceiver: The node which defines an expression that retrieves the
+  ##                   future's value.
+  ##
+  ##    rootReceiver: ??? TODO
+  # -> yield future<x>
+  result.add newNimNode(nnkYieldStmt, fromNode).add(futureVarNode)
+  # -> future<x>.read
+  valueReceiver = newDotExpr(futureVarNode, newIdentNode("read"))
+  result.add generateExceptionCheck(futureVarNode, tryStmt, rootReceiver,
+      fromNode)
+
+template createVar(result: var NimNode, futSymName: string,
+                   asyncProc: NimNode,
+                   valueReceiver, rootReceiver: expr,
+                   fromNode: NimNode) =
+  result = newNimNode(nnkStmtList, fromNode)
+  var futSym = genSym(nskVar, "future")
+  result.add newVarStmt(futSym, asyncProc) # -> var future<x> = y
+  useVar(result, futSym, valueReceiver, rootReceiver, fromNode)
+
+proc createFutureVarCompletions(futureVarIdents: seq[NimNode]): NimNode
+                                {.compileTime.} =
+  result = newStmtList()
+  # Add calls to complete each FutureVar parameter.
+  for ident in futureVarIdents:
+    # Only complete them if they have not been completed already by the user.
+    result.add newIfStmt(
+      (
+        newCall(newIdentNode("not"),
+                newDotExpr(ident, newIdentNode("finished"))),
+        newCall(newIdentNode("complete"), ident)
+      )
+    )
+
+proc processBody(node, retFutureSym: NimNode,
+                 subTypeIsVoid: bool, futureVarIdents: seq[NimNode],
+                 tryStmt: NimNode): NimNode {.compileTime.} =
+  #echo(node.treeRepr)
+  result = node
+  case node.kind
+  of nnkReturnStmt:
+    result = newNimNode(nnkStmtList, node)
+    if node[0].kind == nnkEmpty:
+      if not subTypeIsVoid:
+        result.add newCall(newIdentNode("complete"), retFutureSym,
+            newIdentNode("result"))
+      else:
+        result.add newCall(newIdentNode("complete"), retFutureSym)
+    else:
+      let x = node[0].processBody(retFutureSym, subTypeIsVoid,
+                                  futureVarIdents, tryStmt)
+      if x.kind == nnkYieldStmt: result.add x
+      else:
+        result.add newCall(newIdentNode("complete"), retFutureSym, x)
+
+    result.add createFutureVarCompletions(futureVarIdents)
+
+    result.add newNimNode(nnkReturnStmt, node).add(newNilLit())
+    return # Don't process the children of this return stmt
+  of nnkCommand, nnkCall:
+    if node[0].kind == nnkIdent and node[0].ident == !"await":
+      case node[1].kind
+      of nnkIdent, nnkInfix, nnkDotExpr, nnkCall, nnkCommand:
+        # await x
+        # await x or y
+        # await foo(p, x)
+        # await foo p, x
+        var futureValue: NimNode
+        result.createVar("future" & $node[1][0].toStrLit, node[1], futureValue,
+                  futureValue, node)
+      else:
+        error("Invalid node kind in 'await', got: " & $node[1].kind)
+    elif node.len > 1 and node[1].kind == nnkCommand and
+         node[1][0].kind == nnkIdent and node[1][0].ident == !"await":
+      # foo await x
+      var newCommand = node
+      result.createVar("future" & $node[0].toStrLit, node[1][1], newCommand[1],
+                newCommand, node)
+
+  of nnkVarSection, nnkLetSection:
+    case node[0][2].kind
+    of nnkCommand:
+      if node[0][2][0].kind == nnkIdent and node[0][2][0].ident == !"await":
+        # var x = await y
+        var newVarSection = node # TODO: Should this use copyNimNode?
+        result.createVar("future" & $node[0][0].ident, node[0][2][1],
+          newVarSection[0][2], newVarSection, node)
+    else: discard
+  of nnkAsgn:
+    case node[1].kind
+    of nnkCommand:
+      if node[1][0].ident == !"await":
+        # x = await y
+        var newAsgn = node
+        result.createVar("future" & $node[0].toStrLit, node[1][1], newAsgn[1], newAsgn, node)
+    else: discard
+  of nnkDiscardStmt:
+    # discard await x
+    if node[0].kind == nnkCommand and node[0][0].kind == nnkIdent and
+          node[0][0].ident == !"await":
+      var newDiscard = node
+      result.createVar("futureDiscard_" & $toStrLit(node[0][1]), node[0][1],
+                newDiscard[0], newDiscard, node)
+  of nnkTryStmt:
+    # try: await x; except: ...
+    result = newNimNode(nnkStmtList, node)
+    template wrapInTry(n, tryBody: expr) =
+      var temp = n
+      n[0] = tryBody
+      tryBody = temp
+
+      # Transform ``except`` body.
+      # TODO: Could we perform some ``await`` transformation here to get it
+      # working in ``except``?
+      tryBody[1] = processBody(n[1], retFutureSym, subTypeIsVoid,
+                               futureVarIdents, nil)
+
+    proc processForTry(n: NimNode, i: var int,
+                       res: NimNode): bool {.compileTime.} =
+      ## Transforms the body of the tryStmt. Does not transform the
+      ## body in ``except``.
+      ## Returns true if the tryStmt node was transformed into an ifStmt.
+      result = false
+      var skipped = n.skipStmtList()
+      while i < skipped.len:
+        var processed = processBody(skipped[i], retFutureSym,
+                                    subTypeIsVoid, futureVarIdents, n)
+
+        # Check if we transformed the node into an exception check.
+        # This suggests skipped[i] contains ``await``.
+        if processed.kind != skipped[i].kind or processed.len != skipped[i].len:
+          processed = processed.skipUntilStmtList()
+          expectKind(processed, nnkStmtList)
+          expectKind(processed[2][1], nnkElse)
+          i.inc
+
+          if not processForTry(n, i, processed[2][1][0]):
+            # We need to wrap the nnkElse nodes back into a tryStmt.
+            # As they are executed if an exception does not happen
+            # inside the awaited future.
+            # The following code will wrap the nodes inside the
+            # original tryStmt.
+            wrapInTry(n, processed[2][1][0])
+
+          res.add processed
+          result = true
+        else:
+          res.add skipped[i]
+          i.inc
+    var i = 0
+    if not processForTry(node, i, result):
+      # If the tryStmt hasn't been transformed we can just put the body
+      # back into it.
+      wrapInTry(node, result)
+    return
+  else: discard
+
+  for i in 0 .. <result.len:
+    result[i] = processBody(result[i], retFutureSym, subTypeIsVoid,
+                            futureVarIdents, nil)
+
+proc getName(node: NimNode): string {.compileTime.} =
+  case node.kind
+  of nnkPostfix:
+    return $node[1].ident
+  of nnkIdent:
+    return $node.ident
+  of nnkEmpty:
+    return "anonymous"
+  else:
+    error("Unknown name.")
+
+proc getFutureVarIdents(params: NimNode): seq[NimNode] {.compileTime.} =
+  result = @[]
+  for i in 1 .. <len(params):
+    expectKind(params[i], nnkIdentDefs)
+    if params[i][1].kind == nnkBracketExpr and
+       ($params[i][1][0].ident).normalize == "futurevar":
+      result.add(params[i][0])
+
+proc asyncSingleProc(prc: NimNode): NimNode {.compileTime.} =
+  ## This macro transforms a single procedure into a closure iterator.
+  ## The ``async`` macro supports a stmtList holding multiple async procedures.
+  if prc.kind notin {nnkProcDef, nnkLambda}:
+      error("Cannot transform this node kind into an async proc." &
+            " Proc definition or lambda node expected.")
+
+  hint("Processing " & prc[0].getName & " as an async proc.")
+
+  let returnType = prc[3][0]
+  var baseType: NimNode
+  # Verify that the return type is a Future[T]
+  if returnType.kind == nnkBracketExpr:
+    let fut = repr(returnType[0])
+    if fut != "Future":
+      error("Expected return type of 'Future' got '" & fut & "'")
+    baseType = returnType[1]
+  elif returnType.kind in nnkCallKinds and $returnType[0] == "[]":
+    let fut = repr(returnType[1])
+    if fut != "Future":
+      error("Expected return type of 'Future' got '" & fut & "'")
+    baseType = returnType[2]
+  elif returnType.kind == nnkEmpty:
+    baseType = returnType
+  else:
+    error("Expected return type of 'Future' got '" & repr(returnType) & "'")
+
+  let subtypeIsVoid = returnType.kind == nnkEmpty or
+        (baseType.kind == nnkIdent and returnType[1].ident == !"void")
+
+  let futureVarIdents = getFutureVarIdents(prc[3])
+
+  var outerProcBody = newNimNode(nnkStmtList, prc[6])
+
+  # -> var retFuture = newFuture[T]()
+  var retFutureSym = genSym(nskVar, "retFuture")
+  var subRetType =
+    if returnType.kind == nnkEmpty: newIdentNode("void")
+    else: baseType
+  outerProcBody.add(
+    newVarStmt(retFutureSym,
+      newCall(
+        newNimNode(nnkBracketExpr, prc[6]).add(
+          newIdentNode(!"newFuture"), # TODO: Strange bug here? Remove the `!`.
+          subRetType),
+      newLit(prc[0].getName)))) # Get type from return type of this proc
+
+  # -> iterator nameIter(): FutureBase {.closure.} =
+  # ->   {.push warning[resultshadowed]: off.}
+  # ->   var result: T
+  # ->   {.pop.}
+  # ->   <proc_body>
+  # ->   complete(retFuture, result)
+  var iteratorNameSym = genSym(nskIterator, $prc[0].getName & "Iter")
+  var procBody = prc[6].processBody(retFutureSym, subtypeIsVoid,
+                                    futureVarIdents, nil)
+  # don't do anything with forward bodies (empty)
+  if procBody.kind != nnkEmpty:
+    if not subtypeIsVoid:
+      procBody.insert(0, newNimNode(nnkPragma).add(newIdentNode("push"),
+        newNimNode(nnkExprColonExpr).add(newNimNode(nnkBracketExpr).add(
+          newIdentNode("warning"), newIdentNode("resultshadowed")),
+        newIdentNode("off")))) # -> {.push warning[resultshadowed]: off.}
+
+      procBody.insert(1, newNimNode(nnkVarSection, prc[6]).add(
+        newIdentDefs(newIdentNode("result"), baseType))) # -> var result: T
+
+      procBody.insert(2, newNimNode(nnkPragma).add(
+        newIdentNode("pop"))) # -> {.pop.})
+
+      procBody.add(
+        newCall(newIdentNode("complete"),
+          retFutureSym, newIdentNode("result"))) # -> complete(retFuture, result)
+    else:
+      # -> complete(retFuture)
+      procBody.add(newCall(newIdentNode("complete"), retFutureSym))
+
+    procBody.add(createFutureVarCompletions(futureVarIdents))
+
+    var closureIterator = newProc(iteratorNameSym, [newIdentNode("FutureBase")],
+                                  procBody, nnkIteratorDef)
+    closureIterator[4] = newNimNode(nnkPragma, prc[6]).add(newIdentNode("closure"))
+    outerProcBody.add(closureIterator)
+
+    # -> createCb(retFuture)
+    #var cbName = newIdentNode("cb")
+    var procCb = getAst createCb(retFutureSym, iteratorNameSym,
+                         newStrLitNode(prc[0].getName),
+                         createFutureVarCompletions(futureVarIdents))
+    outerProcBody.add procCb
+
+    # -> return retFuture
+    outerProcBody.add newNimNode(nnkReturnStmt, prc[6][prc[6].len-1]).add(retFutureSym)
+
+  result = prc
+
+  # Remove the 'async' pragma.
+  for i in 0 .. <result[4].len:
+    if result[4][i].kind == nnkIdent and result[4][i].ident == !"async":
+      result[4].del(i)
+  result[4] = newEmptyNode()
+  if subtypeIsVoid:
+    # Add discardable pragma.
+    if returnType.kind == nnkEmpty:
+      # Add Future[void]
+      result[3][0] = parseExpr("Future[void]")
+  if procBody.kind != nnkEmpty:
+    result[6] = outerProcBody
+  #echo(treeRepr(result))
+  #if prc[0].getName == "testInfix":
+  #  echo(toStrLit(result))
+
+macro async*(prc: untyped): untyped =
+  ## Macro which processes async procedures into the appropriate
+  ## iterators and yield statements.
+  if prc.kind == nnkStmtList:
+    for oneProc in prc:
+      result = newStmtList()
+      result.add asyncSingleProc(oneProc)
+  else:
+    result = asyncSingleProc(prc)
+  when defined(nimDumpAsync):
+    echo repr result
+
+
+# Multisync
+proc emptyNoop[T](x: T): T =
+  # The ``await``s are replaced by a call to this for simplicity.
+  when T isnot void:
+    return x
+
+proc stripAwait(node: NimNode): NimNode =
+  ## Strips out all ``await`` commands from a procedure body, replaces them
+  ## with ``emptyNoop`` for simplicity.
+  result = node
+
+  let emptyNoopSym = bindSym("emptyNoop")
+
+  case node.kind
+  of nnkCommand, nnkCall:
+    if node[0].kind == nnkIdent and node[0].ident == !"await":
+      node[0] = emptyNoopSym
+    elif node.len > 1 and node[1].kind == nnkCommand and
+         node[1][0].kind == nnkIdent and node[1][0].ident == !"await":
+      # foo await x
+      node[1][0] = emptyNoopSym
+  of nnkVarSection, nnkLetSection:
+    case node[0][2].kind
+    of nnkCommand:
+      if node[0][2][0].kind == nnkIdent and node[0][2][0].ident == !"await":
+        # var x = await y
+        node[0][2][0] = emptyNoopSym
+    else: discard
+  of nnkAsgn:
+    case node[1].kind
+    of nnkCommand:
+      if node[1][0].ident == !"await":
+        # x = await y
+        node[1][0] = emptyNoopSym
+    else: discard
+  of nnkDiscardStmt:
+    # discard await x
+    if node[0].kind == nnkCommand and node[0][0].kind == nnkIdent and
+          node[0][0].ident == !"await":
+      node[0][0] = emptyNoopSym
+  else: discard
+
+  for i in 0 .. <result.len:
+    result[i] = stripAwait(result[i])
+
+proc splitParams(param: NimNode, async: bool): NimNode =
+  expectKind(param, nnkIdentDefs)
+  result = param
+  if param[1].kind == nnkInfix and $param[1][0].ident in ["|", "or"]:
+    let firstType = param[1][1]
+    let firstTypeName = $firstType.ident
+    let secondType = param[1][2]
+    let secondTypeName = $secondType.ident
+
+    # Make sure that at least one has the name `async`, otherwise we shouldn't
+    # touch it.
+    if not ("async" in firstTypeName.normalize or
+            "async" in secondTypeName.normalize):
+      return
+
+    if async:
+      if firstTypeName.normalize.startsWith("async"):
+        result = newIdentDefs(param[0], param[1][1])
+      elif secondTypeName.normalize.startsWith("async"):
+        result = newIdentDefs(param[0], param[1][2])
+    else:
+      if not firstTypeName.normalize.startsWith("async"):
+        result = newIdentDefs(param[0], param[1][1])
+      elif not secondTypeName.normalize.startsWith("async"):
+        result = newIdentDefs(param[0], param[1][2])
+
+proc stripReturnType(returnType: NimNode): NimNode =
+  # Strip out the 'Future' from 'Future[T]'.
+  result = returnType
+  if returnType.kind == nnkBracketExpr:
+    let fut = repr(returnType[0])
+    if fut != "Future":
+      error("Expected return type of 'Future' got '" & fut & "'")
+    result = returnType[1]
+
+proc splitProc(prc: NimNode): (NimNode, NimNode) =
+  ## Takes a procedure definition which takes a generic union of arguments,
+  ## for example: proc (socket: Socket | AsyncSocket).
+  ## It transforms them so that ``proc (socket: Socket)`` and
+  ## ``proc (socket: AsyncSocket)`` are returned.
+  result[0] = prc.copyNimTree()
+  result[0][3][0] = stripReturnType(result[0][3][0])
+  for i in 1 .. <result[0][3].len:
+    result[0][3][i] = splitParams(result[0][3][i], false)
+  result[0][6] = stripAwait(result[0][6])
+
+  result[1] = prc.copyNimTree()
+  for i in 1 .. <result[1][3].len:
+    result[1][3][i] = splitParams(result[1][3][i], true)
+
+macro multisync*(prc: untyped): untyped =
+  ## Macro which processes async procedures into both asynchronous and
+  ## synchronous procedures.
+  ##
+  ## The generated async procedures use the ``async`` macro, whereas the
+  ## generated synchronous procedures simply strip off the ``await`` calls.
+  hint("Processing " & prc[0].getName & " as a multisync proc.")
+
+  let (sync, asyncPrc) = splitProc(prc)
+  result = newStmtList()
+  result.add(asyncSingleProc(asyncPrc))
+  result.add(sync)
diff --git a/lib/pure/asyncnet.nim b/lib/pure/asyncnet.nim
index a1988f4a6..3b64c278f 100644
--- a/lib/pure/asyncnet.nim
+++ b/lib/pure/asyncnet.nim
@@ -62,6 +62,8 @@ import os
 
 export SOBool
 
+# TODO: Remove duplication introduced by PR #4683.
+
 const defineSsl = defined(ssl) or defined(nimdoc)
 
 when defineSsl:
@@ -157,15 +159,23 @@ when defineSsl:
       await socket.fd.AsyncFd.send(data, flags)
 
   proc appeaseSsl(socket: AsyncSocket, flags: set[SocketFlag],
-                  sslError: cint) {.async.} =
+                  sslError: cint): Future[bool] {.async.} =
+    ## Returns ``true`` if ``socket`` is still connected, otherwise ``false``.
+    result = true
     case sslError
     of SSL_ERROR_WANT_WRITE:
       await sendPendingSslData(socket, flags)
     of SSL_ERROR_WANT_READ:
       var data = await recv(socket.fd.AsyncFD, BufferSize, flags)
-      let ret = bioWrite(socket.bioIn, addr data[0], data.len.cint)
-      if ret < 0:
-        raiseSSLError()
+      let length = len(data)
+      if length > 0:
+        let ret = bioWrite(socket.bioIn, addr data[0], data.len.cint)
+        if ret < 0:
+          raiseSSLError()
+      elif length == 0:
+        # connection not properly closed by remote side or connection dropped
+        SSL_set_shutdown(socket.sslHandle, SSL_RECEIVED_SHUTDOWN)
+        result = false
     else:
       raiseSSLError("Cannot appease SSL.")
 
@@ -173,13 +183,27 @@ when defineSsl:
                    op: expr) =
     var opResult {.inject.} = -1.cint
     while opResult < 0:
+      # Call the desired operation.
       opResult = op
       # Bit hackish here.
       # TODO: Introduce an async template transformation pragma?
+
+      # Send any remaining pending SSL data.
       yield sendPendingSslData(socket, flags)
+
+      # If the operation failed, try to see if SSL has some data to read
+      # or write.
       if opResult < 0:
         let err = getSslError(socket.sslHandle, opResult.cint)
-        yield appeaseSsl(socket, flags, err.cint)
+        let fut = appeaseSsl(socket, flags, err.cint)
+        yield fut
+        if not fut.read():
+          # Socket disconnected.
+          if SocketFlag.SafeDisconn in flags:
+            break
+          else:
+            raiseSSLError("Socket has been disconnected")
+
 
 proc connect*(socket: AsyncSocket, address: string, port: Port) {.async.} =
   ## Connects ``socket`` to server at ``address:port``.
@@ -193,7 +217,7 @@ proc connect*(socket: AsyncSocket, address: string, port: Port) {.async.} =
       sslSetConnectState(socket.sslHandle)
       sslLoop(socket, flags, sslDoHandshake(socket.sslHandle))
 
-template readInto(buf: cstring, size: int, socket: AsyncSocket,
+template readInto(buf: pointer, size: int, socket: AsyncSocket,
                   flags: set[SocketFlag]): int =
   ## Reads **up to** ``size`` bytes from ``socket`` into ``buf``. Note that
   ## this is a template and not a proc.
@@ -202,10 +226,10 @@ template readInto(buf: cstring, size: int, socket: AsyncSocket,
     when defineSsl:
       # SSL mode.
       sslLoop(socket, flags,
-        sslRead(socket.sslHandle, buf, size.cint))
+        sslRead(socket.sslHandle, cast[cstring](buf), size.cint))
       res = opResult
   else:
-    var recvIntoFut = recvInto(socket.fd.AsyncFD, buf, size, flags)
+    var recvIntoFut = asyncdispatch.recvInto(socket.fd.AsyncFD, buf, size, flags)
     yield recvIntoFut
     # Not in SSL mode.
     res = recvIntoFut.read()
@@ -218,6 +242,54 @@ template readIntoBuf(socket: AsyncSocket,
   socket.bufLen = size
   size
 
+proc recvInto*(socket: AsyncSocket, buf: pointer, size: int,
+           flags = {SocketFlag.SafeDisconn}): Future[int] {.async.} =
+  ## Reads **up to** ``size`` bytes from ``socket`` into ``buf``.
+  ##
+  ## For buffered sockets this function will attempt to read all the requested
+  ## data. It will read this data in ``BufferSize`` chunks.
+  ##
+  ## For unbuffered sockets this function makes no effort to read
+  ## all the data requested. It will return as much data as the operating system
+  ## gives it.
+  ##
+  ## If socket is disconnected during the
+  ## recv operation then the future may complete with only a part of the
+  ## requested data.
+  ##
+  ## If socket is disconnected and no data is available
+  ## to be read then the future will complete with a value of ``0``.
+  if socket.isBuffered:
+    let originalBufPos = socket.currPos
+
+    if socket.bufLen == 0:
+      let res = socket.readIntoBuf(flags - {SocketFlag.Peek})
+      if res == 0:
+        return 0
+
+    var read = 0
+    var cbuf = cast[cstring](buf)
+    while read < size:
+      if socket.currPos >= socket.bufLen:
+        if SocketFlag.Peek in flags:
+          # We don't want to get another buffer if we're peeking.
+          break
+        let res = socket.readIntoBuf(flags - {SocketFlag.Peek})
+        if res == 0:
+          break
+
+      let chunk = min(socket.bufLen-socket.currPos, size-read)
+      copyMem(addr(cbuf[read]), addr(socket.buffer[socket.currPos]), chunk)
+      read.inc(chunk)
+      socket.currPos.inc(chunk)
+
+    if SocketFlag.Peek in flags:
+      # Restore old buffer cursor position.
+      socket.currPos = originalBufPos
+    result = read
+  else:
+    result = readInto(buf, size, socket, flags)
+
 proc recv*(socket: AsyncSocket, size: int,
            flags = {SocketFlag.SafeDisconn}): Future[string] {.async.} =
   ## Reads **up to** ``size`` bytes from ``socket``.
@@ -270,6 +342,19 @@ proc recv*(socket: AsyncSocket, size: int,
     let read = readInto(addr result[0], size, socket, flags)
     result.setLen(read)
 
+proc send*(socket: AsyncSocket, buf: pointer, size: int,
+            flags = {SocketFlag.SafeDisconn}) {.async.} =
+  ## Sends ``size`` bytes from ``buf`` to ``socket``. The returned future will complete once all
+  ## data has been sent.
+  assert socket != nil
+  if socket.isSsl:
+    when defineSsl:
+      sslLoop(socket, flags,
+              sslWrite(socket.sslHandle, cast[cstring](buf), size.cint))
+      await sendPendingSslData(socket, flags)
+  else:
+    await send(socket.fd.AsyncFD, buf, size, flags)
+
 proc send*(socket: AsyncSocket, data: string,
            flags = {SocketFlag.SafeDisconn}) {.async.} =
   ## Sends ``data`` to ``socket``. The returned future will complete once all
@@ -320,7 +405,7 @@ proc accept*(socket: AsyncSocket,
   return retFut
 
 proc recvLineInto*(socket: AsyncSocket, resString: FutureVar[string],
-    flags = {SocketFlag.SafeDisconn}) {.async.} =
+    flags = {SocketFlag.SafeDisconn}, maxLength = MaxLineLength) {.async.} =
   ## Reads a line of data from ``socket`` into ``resString``.
   ##
   ## If a full line is read ``\r\L`` is not
@@ -333,13 +418,14 @@ proc recvLineInto*(socket: AsyncSocket, resString: FutureVar[string],
   ## is read) then line will be set to ``""``.
   ## The partial line **will be lost**.
   ##
+  ## The ``maxLength`` parameter determines the maximum amount of characters
+  ## that can be read before a ``ValueError`` is raised. This prevents Denial
+  ## of Service (DOS) attacks.
+  ##
   ## **Warning**: The ``Peek`` flag is not yet implemented.
   ##
   ## **Warning**: ``recvLineInto`` on unbuffered sockets assumes that the
   ## protocol uses ``\r\L`` to delimit a new line.
-  ##
-  ## **Warning**: ``recvLineInto`` currently uses a raw pointer to a string for
-  ## performance reasons. This will likely change soon to use FutureVars.
   assert SocketFlag.Peek notin flags ## TODO:
   assert(not resString.mget.isNil(),
          "String inside resString future needs to be initialised")
@@ -386,6 +472,12 @@ proc recvLineInto*(socket: AsyncSocket, resString: FutureVar[string],
         else:
           resString.mget.add socket.buffer[socket.currPos]
       socket.currPos.inc()
+
+      # Verify that this isn't a DOS attack: #3847.
+      if resString.mget.len > maxLength:
+        let msg = "recvLine received more than the specified `maxLength` " &
+                  "allowed."
+        raise newException(ValueError, msg)
   else:
     var c = ""
     while true:
@@ -407,10 +499,17 @@ proc recvLineInto*(socket: AsyncSocket, resString: FutureVar[string],
         resString.complete()
         return
       resString.mget.add c
+
+      # Verify that this isn't a DOS attack: #3847.
+      if resString.mget.len > maxLength:
+        let msg = "recvLine received more than the specified `maxLength` " &
+                  "allowed."
+        raise newException(ValueError, msg)
   resString.complete()
 
 proc recvLine*(socket: AsyncSocket,
-    flags = {SocketFlag.SafeDisconn}): Future[string] {.async.} =
+    flags = {SocketFlag.SafeDisconn},
+    maxLength = MaxLineLength): Future[string] {.async.} =
   ## Reads a line of data from ``socket``. Returned future will complete once
   ## a full line is read or an error occurs.
   ##
@@ -424,6 +523,10 @@ proc recvLine*(socket: AsyncSocket,
   ## is read) then line will be set to ``""``.
   ## The partial line **will be lost**.
   ##
+  ## The ``maxLength`` parameter determines the maximum amount of characters
+  ## that can be read before a ``ValueError`` is raised. This prevents Denial
+  ## of Service (DOS) attacks.
+  ##
   ## **Warning**: The ``Peek`` flag is not yet implemented.
   ##
   ## **Warning**: ``recvLine`` on unbuffered sockets assumes that the protocol
@@ -433,7 +536,7 @@ proc recvLine*(socket: AsyncSocket,
   # TODO: Optimise this
   var resString = newFutureVar[string]("asyncnet.recvLine")
   resString.mget() = ""
-  await socket.recvLineInto(resString, flags)
+  await socket.recvLineInto(resString, flags, maxLength)
   result = resString.mget()
 
 proc listen*(socket: AsyncSocket, backlog = SOMAXCONN) {.tags: [ReadIOEffect].} =
diff --git a/lib/pure/basic2d.nim b/lib/pure/basic2d.nim
index 7d74424fa..e4696c6a8 100644
--- a/lib/pure/basic2d.nim
+++ b/lib/pure/basic2d.nim
@@ -117,13 +117,13 @@ proc safeArccos(v:float):float=
 
 
 template makeBinOpVector(s:expr)=
-  ## implements binary operators + , - , * and / for vectors
+  ## implements binary operators ``+``, ``-``, ``*`` and ``/`` for vectors
   proc s*(a,b:Vector2d):Vector2d {.inline,noInit.} = vector2d(s(a.x,b.x),s(a.y,b.y))
   proc s*(a:Vector2d,b:float):Vector2d {.inline,noInit.}  = vector2d(s(a.x,b),s(a.y,b))
   proc s*(a:float,b:Vector2d):Vector2d {.inline,noInit.}  = vector2d(s(a,b.x),s(a,b.y))
 
 template makeBinOpAssignVector(s:expr)=
-  ## implements inplace binary operators += , -= , /= and *= for vectors
+  ## implements inplace binary operators ``+=``, ``-=``, ``/=`` and ``*=`` for vectors
   proc s*(a:var Vector2d,b:Vector2d) {.inline.} = s(a.x,b.x) ; s(a.y,b.y)
   proc s*(a:var Vector2d,b:float) {.inline.} = s(a.x,b) ; s(a.y,b)
 
diff --git a/lib/pure/basic3d.nim b/lib/pure/basic3d.nim
index 424c191f8..f7a9c237c 100644
--- a/lib/pure/basic3d.nim
+++ b/lib/pure/basic3d.nim
@@ -117,7 +117,6 @@ proc safeArccos(v:float):float=
   return arccos(clamp(v,-1.0,1.0))
 
 template makeBinOpVector(s:expr)=
-  ## implements binary operators + , - , * and / for vectors
   proc s*(a,b:Vector3d):Vector3d {.inline,noInit.} =
     vector3d(s(a.x,b.x),s(a.y,b.y),s(a.z,b.z))
   proc s*(a:Vector3d,b:float):Vector3d {.inline,noInit.}  =
@@ -126,11 +125,10 @@ template makeBinOpVector(s:expr)=
     vector3d(s(a,b.x),s(a,b.y),s(a,b.z))
 
 template makeBinOpAssignVector(s:expr)=
-  ## implements inplace binary operators += , -= , /= and *= for vectors
   proc s*(a:var Vector3d,b:Vector3d) {.inline.} =
-    s(a.x,b.x) ; s(a.y,b.y) ; s(a.z,b.z)
+    s(a.x,b.x); s(a.y,b.y); s(a.z,b.z)
   proc s*(a:var Vector3d,b:float) {.inline.} =
-    s(a.x,b) ; s(a.y,b) ; s(a.z,b)
+    s(a.x,b); s(a.y,b); s(a.z,b)
 
 
 
diff --git a/lib/pure/collections/sharedtables.nim b/lib/pure/collections/sharedtables.nim
index 17600b272..28509caa1 100644
--- a/lib/pure/collections/sharedtables.nim
+++ b/lib/pure/collections/sharedtables.nim
@@ -15,6 +15,8 @@
 import
   hashes, math, locks
 
+include "system/inclrtl"
+
 type
   KeyValuePair[A, B] = tuple[hcode: Hash, key: A, val: B]
   KeyValuePairSeq[A, B] = ptr array[10_000_000, KeyValuePair[A, B]]
@@ -35,9 +37,12 @@ proc enlarge[A, B](t: var SharedTable[A, B]) =
   t.dataLen = size
   swap(t.data, n)
   for i in 0..<oldSize:
-    if isFilled(n[i].hcode):
-      var j = -1 - rawGetKnownHC(t, n[i].key, n[i].hcode)
-      rawInsert(t, t.data, n[i].key, n[i].val, n[i].hcode, j)
+    let eh = n[i].hcode
+    if isFilled(eh):
+      var j: Hash = eh and maxHash(t)
+      while isFilled(t.data[j].hcode):
+        j = nextTry(j, maxHash(t))
+      rawInsert(t, t.data, n[i].key, n[i].val, eh, j)
   deallocShared(n)
 
 template withLock(t, x: untyped) =
@@ -47,7 +52,7 @@ template withLock(t, x: untyped) =
 
 template withValue*[A, B](t: var SharedTable[A, B], key: A,
                           value, body: untyped) =
-  ## retrieves the value at ``t[key]``. 
+  ## retrieves the value at ``t[key]``.
   ## `value` can be modified in the scope of the ``withValue`` call.
   ##
   ## .. code-block:: nim
@@ -55,7 +60,7 @@ template withValue*[A, B](t: var SharedTable[A, B], key: A,
   ##   sharedTable.withValue(key, value) do:
   ##     # block is executed only if ``key`` in ``t``
   ##     # value is threadsafe in block
-  ##     value.name = "username" 
+  ##     value.name = "username"
   ##     value.uid = 1000
   ##
   acquire(t.lock)
@@ -71,15 +76,15 @@ template withValue*[A, B](t: var SharedTable[A, B], key: A,
 
 template withValue*[A, B](t: var SharedTable[A, B], key: A,
                           value, body1, body2: untyped) =
-  ## retrieves the value at ``t[key]``. 
+  ## retrieves the value at ``t[key]``.
   ## `value` can be modified in the scope of the ``withValue`` call.
-  ## 
+  ##
   ## .. code-block:: nim
   ##
   ##   sharedTable.withValue(key, value) do:
   ##     # block is executed only if ``key`` in ``t``
   ##     # value is threadsafe in block
-  ##     value.name = "username" 
+  ##     value.name = "username"
   ##     value.uid = 1000
   ##   do:
   ##     # block is executed when ``key`` not in ``t``
diff --git a/lib/pure/collections/tableimpl.nim b/lib/pure/collections/tableimpl.nim
index be3507137..a3dfd43a1 100644
--- a/lib/pure/collections/tableimpl.nim
+++ b/lib/pure/collections/tableimpl.nim
@@ -142,7 +142,8 @@ template delImpl() {.dirty.} =
 
 template clearImpl() {.dirty.} =
   for i in 0 .. <t.data.len:
-    t.data[i].hcode = 0
+    when compiles(t.data[i].hcode): # CountTable records don't contain a hcode
+      t.data[i].hcode = 0
     t.data[i].key = default(type(t.data[i].key))
     t.data[i].val = default(type(t.data[i].val))
   t.counter = 0
diff --git a/lib/pure/collections/tables.nim b/lib/pure/collections/tables.nim
index 9308095aa..778ea5ca3 100644
--- a/lib/pure/collections/tables.nim
+++ b/lib/pure/collections/tables.nim
@@ -118,7 +118,11 @@ template dataLen(t): untyped = len(t.data)
 
 include tableimpl
 
-proc clear*[A, B](t: Table[A, B] | TableRef[A, B]) =
+proc clear*[A, B](t: var Table[A, B]) =
+  ## Resets the table so that it is empty.
+  clearImpl()
+
+proc clear*[A, B](t: TableRef[A, B]) =
   ## Resets the table so that it is empty.
   clearImpl()
 
@@ -270,9 +274,12 @@ proc enlarge[A, B](t: var Table[A, B]) =
   newSeq(n, len(t.data) * growthFactor)
   swap(t.data, n)
   for i in countup(0, high(n)):
-    if isFilled(n[i].hcode):
-      var j = -1 - rawGetKnownHC(t, n[i].key, n[i].hcode)
-      rawInsert(t, t.data, n[i].key, n[i].val, n[i].hcode, j)
+    let eh = n[i].hcode
+    if isFilled(eh):
+      var j: Hash = eh and maxHash(t)
+      while isFilled(t.data[j].hcode):
+        j = nextTry(j, maxHash(t))
+      rawInsert(t, t.data, n[i].key, n[i].val, eh, j)
 
 proc mgetOrPut*[A, B](t: var Table[A, B], key: A, val: B): var B =
   ## retrieves value at ``t[key]`` or puts ``val`` if not present, either way
@@ -457,7 +464,7 @@ proc len*[A, B](t: OrderedTable[A, B]): int {.inline.} =
   ## returns the number of keys in `t`.
   result = t.counter
 
-proc clear*[A, B](t: OrderedTable[A, B] | OrderedTableRef[A, B]) =
+proc clear*[A, B](t: var OrderedTable[A, B] | OrderedTableRef[A, B]) =
   ## Resets the table so that it is empty.
   clearImpl()
   t.first = -1
@@ -786,7 +793,7 @@ proc len*[A](t: CountTable[A]): int =
   ## returns the number of keys in `t`.
   result = t.counter
 
-proc clear*[A](t: CountTable[A] | CountTableRef[A]) =
+proc clear*[A](t: var CountTable[A] | CountTableRef[A]) =
   ## Resets the table so that it is empty.
   clearImpl()
   t.counter = 0
diff --git a/lib/pure/concurrency/threadpool.nim b/lib/pure/concurrency/threadpool.nim
index 9490dbbd5..8cdb83e19 100644
--- a/lib/pure/concurrency/threadpool.nim
+++ b/lib/pure/concurrency/threadpool.nim
@@ -297,9 +297,20 @@ var
   gSomeReady : Semaphore
   readyWorker: ptr Worker
 
+# A workaround for recursion deadlock issue
+# https://github.com/nim-lang/Nim/issues/4597
+var
+  numSlavesLock: Lock
+  numSlavesRunning {.guard: numSlavesLock}: int
+  numSlavesWaiting {.guard: numSlavesLock}: int
+  isSlave {.threadvar.}: bool
+
+numSlavesLock.initLock
+
 gSomeReady.initSemaphore()
 
 proc slave(w: ptr Worker) {.thread.} =
+  isSlave = true
   while true:
     when declared(atomicStoreN):
       atomicStoreN(addr(w.ready), true, ATOMIC_SEQ_CST)
@@ -311,7 +322,15 @@ proc slave(w: ptr Worker) {.thread.} =
     # XXX Somebody needs to look into this (why does this assertion fail
     # in Visual Studio?)
     when not defined(vcc): assert(not w.ready)
+
+    withLock numSlavesLock:
+      inc numSlavesRunning
+
     w.f(w, w.data)
+
+    withLock numSlavesLock:
+      dec numSlavesRunning
+
     if w.q.len != 0: w.cleanFlowVars
     if w.shutdown:
       w.shutdown = false
@@ -464,10 +483,34 @@ proc nimSpawn3(fn: WorkerProc; data: pointer) {.compilerProc.} =
         fn(self, data)
         await(self.taskStarted)
         return
-      else:
-        await(gSomeReady)
-    else:
-      await(gSomeReady)
+
+    if isSlave:
+      # Run under lock until `numSlavesWaiting` increment to avoid a
+      # race (otherwise two last threads might start waiting together)
+      withLock numSlavesLock:
+        if numSlavesRunning <= numSlavesWaiting + 1:
+          # All the other slaves are waiting
+          # If we wait now, we-re deadlocked until
+          # an external spawn happens !
+          if currentPoolSize < maxPoolSize:
+            if not workersData[currentPoolSize].initialized:
+              activateWorkerThread(currentPoolSize)
+            let w = addr(workersData[currentPoolSize])
+            atomicInc currentPoolSize
+            if selectWorker(w, fn, data):
+              return
+          else:
+            # There is no place in the pool. We're deadlocked.
+            # echo "Deadlock!"
+            discard
+
+        inc numSlavesWaiting
+
+    await(gSomeReady)
+
+    if isSlave:
+      withLock numSlavesLock:
+        dec numSlavesWaiting
 
 var
   distinguishedLock: Lock
diff --git a/lib/pure/htmlparser.nim b/lib/pure/htmlparser.nim
index 1fe0b297b..10a786555 100644
--- a/lib/pure/htmlparser.nim
+++ b/lib/pure/htmlparser.nim
@@ -452,7 +452,10 @@ proc parse(x: var XmlParser, errors: var seq[string]): XmlNode
 proc expected(x: var XmlParser, n: XmlNode): string =
   result = errorMsg(x, "</" & n.tag & "> expected")
 
-template elemName(x: expr): expr = rawData(x)
+template elemName(x: untyped): untyped = rawData(x)
+
+template adderr(x: untyped) =
+  errors.add(x)
 
 proc untilElementEnd(x: var XmlParser, result: XmlNode,
                      errors: var seq[string]) =
@@ -469,24 +472,24 @@ proc untilElementEnd(x: var XmlParser, result: XmlNode,
         # allow ``<p>`` in `<dd>`, `<dt>` and ``<li>`` in next case
         if htmlTag(x.elemName) in {tagLi, tagP, tagDt, tagDd, tagInput,
                                    tagOption}:
-          errors.add(expected(x, result))
+          adderr(expected(x, result))
           break
       of tagDd, tagDt, tagLi:
         if htmlTag(x.elemName) in {tagLi, tagDt, tagDd, tagInput,
                                    tagOption}:
-          errors.add(expected(x, result))
+          adderr(expected(x, result))
           break
       of tagTd, tagTh:
         if htmlTag(x.elemName) in {tagTr, tagTd, tagTh, tagTfoot, tagThead}:
-          errors.add(expected(x, result))
+          adderr(expected(x, result))
           break
       of tagTr:
         if htmlTag(x.elemName) == tagTr:
-          errors.add(expected(x, result))
+          adderr(expected(x, result))
           break
       of tagOptgroup:
         if htmlTag(x.elemName) in {tagOption, tagOptgroup}:
-          errors.add(expected(x, result))
+          adderr(expected(x, result))
           break
       else: discard
       result.addNode(parse(x, errors))
@@ -495,11 +498,11 @@ proc untilElementEnd(x: var XmlParser, result: XmlNode,
         next(x)
       else:
         #echo "5; expected: ", result.htmltag, " ", x.elemName
-        errors.add(expected(x, result))
+        adderr(expected(x, result))
         # do not skip it here!
       break
     of xmlEof:
-      errors.add(expected(x, result))
+      adderr(expected(x, result))
       break
     else:
       result.addNode(parse(x, errors))
@@ -516,14 +519,14 @@ proc parse(x: var XmlParser, errors: var seq[string]): XmlNode =
     # we just ignore processing instructions for now
     next(x)
   of xmlError:
-    errors.add(errorMsg(x))
+    adderr(errorMsg(x))
     next(x)
   of xmlElementStart:
     result = newElement(toLowerAscii(x.elemName))
     next(x)
     untilElementEnd(x, result, errors)
   of xmlElementEnd:
-    errors.add(errorMsg(x, "unexpected ending tag: " & x.elemName))
+    adderr(errorMsg(x, "unexpected ending tag: " & x.elemName))
   of xmlElementOpen:
     result = newElement(toLowerAscii(x.elemName))
     next(x)
@@ -537,16 +540,16 @@ proc parse(x: var XmlParser, errors: var seq[string]): XmlNode =
         next(x)
         break
       of xmlError:
-        errors.add(errorMsg(x))
+        adderr(errorMsg(x))
         next(x)
         break
       else:
-        errors.add(errorMsg(x, "'>' expected"))
+        adderr(errorMsg(x, "'>' expected"))
         next(x)
         break
     untilElementEnd(x, result, errors)
   of xmlAttribute, xmlElementClose:
-    errors.add(errorMsg(x, "<some_tag> expected"))
+    adderr(errorMsg(x, "<some_tag> expected"))
     next(x)
   of xmlCData:
     result = newCData(x.rawData)
@@ -570,7 +573,7 @@ proc parseHtml*(s: Stream, filename: string,
   result = newElement("document")
   result.addNode(parse(x, errors))
   #if x.kind != xmlEof:
-  #  errors.add(errorMsg(x, "EOF expected"))
+  #  adderr(errorMsg(x, "EOF expected"))
   while x.kind != xmlEof:
     var oldPos = x.bufpos # little hack to see if we made any progess
     result.addNode(parse(x, errors))
diff --git a/lib/pure/httpclient.nim b/lib/pure/httpclient.nim
index 778ca2cbb..4404a9426 100644
--- a/lib/pure/httpclient.nim
+++ b/lib/pure/httpclient.nim
@@ -1,98 +1,130 @@
 #
 #
 #            Nim's Runtime Library
-#        (c) Copyright 2010 Dominik Picheta, Andreas Rumpf
+#        (c) Copyright 2016 Dominik Picheta, Andreas Rumpf
 #
 #    See the file "copying.txt", included in this
 #    distribution, for details about the copyright.
 #
 
 ## This module implements a simple HTTP client that can be used to retrieve
-## webpages/other data.
-##
-##
-## **Note**: This module is not ideal, connection is not kept alive so sites with
-## many redirects are expensive. As such in the future this module may change,
-## and the current procedures will be deprecated.
+## webpages and other data.
 ##
 ## Retrieving a website
 ## ====================
 ##
 ## This example uses HTTP GET to retrieve
-## ``http://google.com``
+## ``http://google.com``:
 ##
 ## .. code-block:: Nim
+##   var client = newHttpClient()
 ##   echo(getContent("http://google.com"))
 ##
+## The same action can also be performed asynchronously, simply use the
+## ``AsyncHttpClient``:
+##
+## .. code-block:: Nim
+##   var client = newAsyncHttpClient()
+##   echo(await getContent("http://google.com"))
+##
+## The functionality implemented by ``HttpClient`` and ``AsyncHttpClient``
+## is the same, so you can use whichever one suits you best in the examples
+## shown here.
+##
+## **Note:** You will need to run asynchronous examples in an async proc
+## otherwise you will get an ``Undeclared identifier: 'await'`` error.
+##
 ## Using HTTP POST
 ## ===============
 ##
 ## This example demonstrates the usage of the W3 HTML Validator, it
-## uses ``multipart/form-data`` as the ``Content-Type`` to send the HTML to
-## the server.
+## uses ``multipart/form-data`` as the ``Content-Type`` to send the HTML to be
+## validated to the server.
 ##
 ## .. code-block:: Nim
+##   var client = newHttpClient()
 ##   var data = newMultipartData()
 ##   data["output"] = "soap12"
 ##   data["uploaded_file"] = ("test.html", "text/html",
 ##     "<html><head></head><body><p>test</p></body></html>")
 ##
-##   echo postContent("http://validator.w3.org/check", multipart=data)
+##   echo client.postContent("http://validator.w3.org/check", multipart=data)
 ##
-## Asynchronous HTTP requests
-## ==========================
+## Progress reporting
+## ==================
 ##
-## You simply have to create a new instance of the ``AsyncHttpClient`` object.
-## You may then use ``await`` on the functions defined for that object.
-## Keep in mind that the following code needs to be inside an asynchronous
-## procedure.
-##
-## .. code-block::nim
+## You may specify a callback procedure to be called during an HTTP request.
+## This callback will be executed every second with information about the
+## progress of the HTTP request.
 ##
+## .. code-block:: Nim
 ##    var client = newAsyncHttpClient()
-##    var resp = await client.request("http://google.com")
+##    proc onProgressChanged(total, progress, speed: BiggestInt) {.async.} =
+##      echo("Downloaded ", progress, " of ", total)
+##      echo("Current rate: ", speed div 1000, "kb/s")
+##    client.onProgressChanged = onProgressChanged
+##    discard await client.getContent("http://speedtest-ams2.digitalocean.com/100mb.test")
+##
+## If you would like to remove the callback simply set it to ``nil``.
+##
+## .. code-block:: Nim
+##   client.onProgressChanged = nil
 ##
 ## SSL/TLS support
 ## ===============
 ## This requires the OpenSSL library, fortunately it's widely used and installed
 ## on many operating systems. httpclient will use SSL automatically if you give
 ## any of the functions a url with the ``https`` schema, for example:
-## ``https://github.com/``, you also have to compile with ``ssl`` defined like so:
+## ``https://github.com/``.
+##
+## You will also have to compile with ``ssl`` defined like so:
 ## ``nim c -d:ssl ...``.
 ##
 ## Timeouts
 ## ========
-## Currently all functions support an optional timeout, by default the timeout is set to
-## `-1` which means that the function will never time out. The timeout is
+##
+## Currently only the synchronous functions support a timeout.
+## The timeout is
 ## measured in milliseconds, once it is set any call on a socket which may
-## block will be susceptible to this timeout, however please remember that the
+## block will be susceptible to this timeout.
+##
+## It may be surprising but the
 ## function as a whole can take longer than the specified timeout, only
 ## individual internal calls on the socket are affected. In practice this means
 ## that as long as the server is sending data an exception will not be raised,
-## if however data does not reach client within the specified timeout an ETimeout
-## exception will then be raised.
+## if however data does not reach the client within the specified timeout a
+## ``TimeoutError`` exception will be raised.
 ##
 ## Proxy
 ## =====
 ##
-## A proxy can be specified as a param to any of these procedures, the ``newProxy``
-## constructor should be used for this purpose. However,
-## currently only basic authentication is supported.
+## A proxy can be specified as a param to any of the procedures defined in
+## this module. To do this, use the ``newProxy`` constructor. Unfortunately,
+## only basic authentication is supported at the moment.
 
 import net, strutils, uri, parseutils, strtabs, base64, os, mimetypes,
-  math, random, httpcore
+  math, random, httpcore, times
 import asyncnet, asyncdispatch
 import nativesockets
 
 export httpcore except parseHeader # TODO: The ``except`` doesn't work
 
 type
-  Response* = tuple[
-    version: string,
-    status: string,
-    headers: HttpHeaders,
-    body: string]
+  Response* = object
+    version*: string
+    status*: string
+    headers*: HttpHeaders
+    body*: string
+
+proc code*(response: Response): HttpCode
+           {.raises: [ValueError, OverflowError].} =
+  ## Retrieves the specified response's ``HttpCode``.
+  ##
+  ## Raises a ``ValueError`` if the response's ``status`` does not have a
+  ## corresponding ``HttpCode``.
+  return response.status[0 .. 2].parseInt.HttpCode
 
+type
   Proxy* = ref object
     url*: Uri
     auth*: string
@@ -253,25 +285,6 @@ proc parseResponse(s: Socket, getBody: bool, timeout: int): Response =
   else:
     result.body = ""
 
-type
-  HttpMethod* = enum  ## the requested HttpMethod
-    httpHEAD,         ## Asks for the response identical to the one that would
-                      ## correspond to a GET request, but without the response
-                      ## body.
-    httpGET,          ## Retrieves the specified resource.
-    httpPOST,         ## Submits data to be processed to the identified
-                      ## resource. The data is included in the body of the
-                      ## request.
-    httpPUT,          ## Uploads a representation of the specified resource.
-    httpDELETE,       ## Deletes the specified resource.
-    httpTRACE,        ## Echoes back the received request, so that a client
-                      ## can see what intermediate servers are adding or
-                      ## changing in the request.
-    httpOPTIONS,      ## Returns the HTTP methods that the server supports
-                      ## for specified address.
-    httpCONNECT       ## Converts the request connection to a transparent
-                      ## TCP/IP tunnel, usually used for proxies.
-
 {.deprecated: [THttpMethod: HttpMethod].}
 
 when not defined(ssl):
@@ -389,15 +402,18 @@ proc format(p: MultipartData): tuple[header, body: string] =
 
 proc request*(url: string, httpMethod: string, extraHeaders = "",
               body = "", sslContext = defaultSSLContext, timeout = -1,
-              userAgent = defUserAgent, proxy: Proxy = nil): Response =
+              userAgent = defUserAgent, proxy: Proxy = nil): Response
+              {.deprecated.} =
   ## | Requests ``url`` with the custom method string specified by the
   ## | ``httpMethod`` parameter.
   ## | Extra headers can be specified and must be separated by ``\c\L``
   ## | An optional timeout can be specified in milliseconds, if reading from the
   ## server takes longer than specified an ETimeout exception will be raised.
+  ##
+  ## **Deprecated since version 0.15.0**: use ``HttpClient.request`` instead.
   var r = if proxy == nil: parseUri(url) else: proxy.url
   var hostUrl = if proxy == nil: r else: parseUri(url)
-  var headers = substr(httpMethod, len("http"))
+  var headers = httpMethod.toUpper()
   # TODO: Use generateHeaders further down once it supports proxies.
 
   var s = newSocket()
@@ -481,15 +497,18 @@ proc request*(url: string, httpMethod: string, extraHeaders = "",
   if body != "":
     s.send(body)
 
-  result = parseResponse(s, httpMethod != "httpHEAD", timeout)
+  result = parseResponse(s, httpMethod != "HEAD", timeout)
 
 proc request*(url: string, httpMethod = httpGET, extraHeaders = "",
               body = "", sslContext = defaultSSLContext, timeout = -1,
-              userAgent = defUserAgent, proxy: Proxy = nil): Response =
+              userAgent = defUserAgent, proxy: Proxy = nil): Response
+              {.deprecated.} =
   ## | Requests ``url`` with the specified ``httpMethod``.
   ## | Extra headers can be specified and must be separated by ``\c\L``
   ## | An optional timeout can be specified in milliseconds, if reading from the
   ## server takes longer than specified an ETimeout exception will be raised.
+  ##
+  ## **Deprecated since version 0.15.0**: use ``HttpClient.request`` instead.
   result = request(url, $httpMethod, extraHeaders, body, sslContext, timeout,
                    userAgent, proxy)
 
@@ -512,12 +531,14 @@ proc getNewLocation(lastURL: string, headers: HttpHeaders): string =
 proc get*(url: string, extraHeaders = "", maxRedirects = 5,
           sslContext: SSLContext = defaultSSLContext,
           timeout = -1, userAgent = defUserAgent,
-          proxy: Proxy = nil): Response =
+          proxy: Proxy = nil): Response {.deprecated.} =
   ## | GETs the ``url`` and returns a ``Response`` object
   ## | This proc also handles redirection
   ## | Extra headers can be specified and must be separated by ``\c\L``.
   ## | An optional timeout can be specified in milliseconds, if reading from the
   ## server takes longer than specified an ETimeout exception will be raised.
+  ##
+  ## ## **Deprecated since version 0.15.0**: use ``HttpClient.get`` instead.
   result = request(url, httpGET, extraHeaders, "", sslContext, timeout,
                    userAgent, proxy)
   var lastURL = url
@@ -531,12 +552,14 @@ proc get*(url: string, extraHeaders = "", maxRedirects = 5,
 proc getContent*(url: string, extraHeaders = "", maxRedirects = 5,
                  sslContext: SSLContext = defaultSSLContext,
                  timeout = -1, userAgent = defUserAgent,
-                 proxy: Proxy = nil): string =
+                 proxy: Proxy = nil): string {.deprecated.} =
   ## | GETs the body and returns it as a string.
   ## | Raises exceptions for the status codes ``4xx`` and ``5xx``
   ## | Extra headers can be specified and must be separated by ``\c\L``.
   ## | An optional timeout can be specified in milliseconds, if reading from the
   ## server takes longer than specified an ETimeout exception will be raised.
+  ##
+  ## **Deprecated since version 0.15.0**: use ``HttpClient.getContent`` instead.
   var r = get(url, extraHeaders, maxRedirects, sslContext, timeout, userAgent,
               proxy)
   if r.status[0] in {'4','5'}:
@@ -549,7 +572,7 @@ proc post*(url: string, extraHeaders = "", body = "",
            sslContext: SSLContext = defaultSSLContext,
            timeout = -1, userAgent = defUserAgent,
            proxy: Proxy = nil,
-           multipart: MultipartData = nil): Response =
+           multipart: MultipartData = nil): Response {.deprecated.} =
   ## | POSTs ``body`` to the ``url`` and returns a ``Response`` object.
   ## | This proc adds the necessary Content-Length header.
   ## | This proc also handles redirection.
@@ -558,6 +581,8 @@ proc post*(url: string, extraHeaders = "", body = "",
   ## server takes longer than specified an ETimeout exception will be raised.
   ## | The optional ``multipart`` parameter can be used to create
   ## ``multipart/form-data`` POSTs comfortably.
+  ##
+  ## **Deprecated since version 0.15.0**: use ``HttpClient.post`` instead.
   let (mpHeaders, mpBody) = format(multipart)
 
   template withNewLine(x): expr =
@@ -587,7 +612,8 @@ proc postContent*(url: string, extraHeaders = "", body = "",
                   sslContext: SSLContext = defaultSSLContext,
                   timeout = -1, userAgent = defUserAgent,
                   proxy: Proxy = nil,
-                  multipart: MultipartData = nil): string =
+                  multipart: MultipartData = nil): string
+                  {.deprecated.} =
   ## | POSTs ``body`` to ``url`` and returns the response's body as a string
   ## | Raises exceptions for the status codes ``4xx`` and ``5xx``
   ## | Extra headers can be specified and must be separated by ``\c\L``.
@@ -595,6 +621,9 @@ proc postContent*(url: string, extraHeaders = "", body = "",
   ## server takes longer than specified an ETimeout exception will be raised.
   ## | The optional ``multipart`` parameter can be used to create
   ## ``multipart/form-data`` POSTs comfortably.
+  ##
+  ## **Deprecated since version 0.15.0**: use ``HttpClient.postContent``
+  ## instead.
   var r = post(url, extraHeaders, body, maxRedirects, sslContext, timeout,
                userAgent, proxy, multipart)
   if r.status[0] in {'4','5'}:
@@ -617,46 +646,116 @@ proc downloadFile*(url: string, outputFilename: string,
   else:
     fileError("Unable to open file")
 
-proc generateHeaders(r: Uri, httpMethod: string,
-                     headers: StringTableRef, body: string): string =
-  # TODO: Use this in the blocking HttpClient once it supports proxies.
-  result = substr(httpMethod, len("http"))
-  # TODO: Proxies
+proc generateHeaders(requestUrl: Uri, httpMethod: string,
+                     headers: HttpHeaders, body: string, proxy: Proxy): string =
+  # GET
+  result = httpMethod.toUpper()
   result.add ' '
-  if r.path[0] != '/': result.add '/'
-  result.add(r.path)
-  if r.query.len > 0:
-    result.add("?" & r.query)
+
+  if proxy.isNil:
+    # /path?query
+    if requestUrl.path[0] != '/': result.add '/'
+    result.add(requestUrl.path)
+    if requestUrl.query.len > 0:
+      result.add("?" & requestUrl.query)
+  else:
+    # Remove the 'http://' from the URL for CONNECT requests.
+    var modifiedUrl = requestUrl
+    modifiedUrl.scheme = ""
+    result.add($modifiedUrl)
+
+  # HTTP/1.1\c\l
   result.add(" HTTP/1.1\c\L")
 
-  if r.port == "":
-    add(result, "Host: " & r.hostname & "\c\L")
+  # Host header.
+  if requestUrl.port == "":
+    add(result, "Host: " & requestUrl.hostname & "\c\L")
   else:
-    add(result, "Host: " & r.hostname & ":" & r.port & "\c\L")
+    add(result, "Host: " & requestUrl.hostname & ":" & requestUrl.port & "\c\L")
 
-  add(result, "Connection: Keep-Alive\c\L")
+  # Connection header.
+  if not headers.hasKey("Connection"):
+    add(result, "Connection: Keep-Alive\c\L")
+
+  # Content length header.
   if body.len > 0 and not headers.hasKey("Content-Length"):
     add(result, "Content-Length: " & $body.len & "\c\L")
+
+  # Proxy auth header.
+  if not proxy.isNil and proxy.auth != "":
+    let auth = base64.encode(proxy.auth, newline = "")
+    add(result, "Proxy-Authorization: basic " & auth & "\c\L")
+
   for key, val in headers:
     add(result, key & ": " & val & "\c\L")
 
   add(result, "\c\L")
 
 type
-  AsyncHttpClient* = ref object
-    socket: AsyncSocket
+  ProgressChangedProc*[ReturnType] =
+    proc (total, progress, speed: BiggestInt):
+      ReturnType {.closure, gcsafe.}
+
+  HttpClientBase*[SocketType] = ref object
+    socket: SocketType
     connected: bool
     currentURL: Uri ## Where we are currently connected.
-    headers*: StringTableRef
+    headers*: HttpHeaders ## Headers to send in requests.
     maxRedirects: int
     userAgent: string
+    timeout: int ## Only used for blocking HttpClient for now.
+    proxy: Proxy
+    ## ``nil`` or the callback to call when request progress changes.
+    when SocketType is Socket:
+      onProgressChanged*: ProgressChangedProc[void]
+    else:
+      onProgressChanged*: ProgressChangedProc[Future[void]]
     when defined(ssl):
       sslContext: net.SslContext
+    contentTotal: BiggestInt
+    contentProgress: BiggestInt
+    oneSecondProgress: BiggestInt
+    lastProgressReport: float
+
+type
+  HttpClient* = HttpClientBase[Socket]
+
+proc newHttpClient*(userAgent = defUserAgent,
+    maxRedirects = 5, sslContext = defaultSslContext, proxy: Proxy = nil,
+    timeout = -1): HttpClient =
+  ## Creates a new HttpClient instance.
+  ##
+  ## ``userAgent`` specifies the user agent that will be used when making
+  ## requests.
+  ##
+  ## ``maxRedirects`` specifies the maximum amount of redirects to follow,
+  ## default is 5.
+  ##
+  ## ``sslContext`` specifies the SSL context to use for HTTPS requests.
+  ##
+  ## ``proxy`` specifies an HTTP proxy to use for this HTTP client's
+  ## connections.
+  ##
+  ## ``timeout`` specifies the number of miliseconds to allow before a
+  ## ``TimeoutError`` is raised.
+  new result
+  result.headers = newHttpHeaders()
+  result.userAgent = userAgent
+  result.maxRedirects = maxRedirects
+  result.proxy = proxy
+  result.timeout = timeout
+  result.onProgressChanged = nil
+  when defined(ssl):
+    result.sslContext = sslContext
+
+type
+  AsyncHttpClient* = HttpClientBase[AsyncSocket]
 
 {.deprecated: [PAsyncHttpClient: AsyncHttpClient].}
 
 proc newAsyncHttpClient*(userAgent = defUserAgent,
-    maxRedirects = 5, sslContext = defaultSslContext): AsyncHttpClient =
+    maxRedirects = 5, sslContext = defaultSslContext,
+    proxy: Proxy = nil): AsyncHttpClient =
   ## Creates a new AsyncHttpClient instance.
   ##
   ## ``userAgent`` specifies the user agent that will be used when making
@@ -666,29 +765,58 @@ proc newAsyncHttpClient*(userAgent = defUserAgent,
   ## default is 5.
   ##
   ## ``sslContext`` specifies the SSL context to use for HTTPS requests.
+  ##
+  ## ``proxy`` specifies an HTTP proxy to use for this HTTP client's
+  ## connections.
   new result
-  result.headers = newStringTable(modeCaseInsensitive)
+  result.headers = newHttpHeaders()
   result.userAgent = userAgent
   result.maxRedirects = maxRedirects
+  result.proxy = proxy
+  result.timeout = -1 # TODO
+  result.onProgressChanged = nil
   when defined(ssl):
     result.sslContext = sslContext
 
-proc close*(client: AsyncHttpClient) =
+proc close*(client: HttpClient | AsyncHttpClient) =
   ## Closes any connections held by the HTTP client.
   if client.connected:
     client.socket.close()
     client.connected = false
 
-proc recvFull(socket: AsyncSocket, size: int): Future[string] {.async.} =
+proc reportProgress(client: HttpClient | AsyncHttpClient,
+                    progress: BiggestInt) {.multisync.} =
+  client.contentProgress += progress
+  client.oneSecondProgress += progress
+  if epochTime() - client.lastProgressReport >= 1.0:
+    if not client.onProgressChanged.isNil:
+      await client.onProgressChanged(client.contentTotal,
+                                     client.contentProgress,
+                                     client.oneSecondProgress)
+      client.oneSecondProgress = 0
+      client.lastProgressReport = epochTime()
+
+proc recvFull(client: HttpClient | AsyncHttpClient,
+              size: int, timeout: int): Future[string] {.multisync.} =
   ## Ensures that all the data requested is read and returned.
   result = ""
   while true:
     if size == result.len: break
-    let data = await socket.recv(size - result.len)
+
+    let remainingSize = size - result.len
+    let sizeToRecv = min(remainingSize, net.BufferSize)
+
+    when client.socket is Socket:
+      let data = client.socket.recv(sizeToRecv, timeout)
+    else:
+      let data = await client.socket.recv(sizeToRecv)
     if data == "": break # We've been disconnected.
     result.add data
 
-proc parseChunks(client: AsyncHttpClient): Future[string] {.async.} =
+    await reportProgress(client, data.len)
+
+proc parseChunks(client: HttpClient | AsyncHttpClient): Future[string]
+                 {.multisync.} =
   result = ""
   while true:
     var chunkSize = 0
@@ -714,17 +842,23 @@ proc parseChunks(client: AsyncHttpClient): Future[string] {.async.} =
         httpError("Invalid chunk size: " & chunkSizeStr)
       inc(i)
     if chunkSize <= 0:
-      discard await recvFull(client.socket, 2) # Skip \c\L
+      discard await recvFull(client, 2, client.timeout) # Skip \c\L
       break
-    result.add await recvFull(client.socket, chunkSize)
-    discard await recvFull(client.socket, 2) # Skip \c\L
+    result.add await recvFull(client, chunkSize, client.timeout)
+    discard await recvFull(client, 2, client.timeout) # Skip \c\L
     # Trailer headers will only be sent if the request specifies that we want
     # them: http://tools.ietf.org/html/rfc2616#section-3.6.1
 
-proc parseBody(client: AsyncHttpClient,
+proc parseBody(client: HttpClient | AsyncHttpClient,
                headers: HttpHeaders,
-               httpVersion: string): Future[string] {.async.} =
+               httpVersion: string): Future[string] {.multisync.} =
   result = ""
+  # Reset progress from previous requests.
+  client.contentTotal = 0
+  client.contentProgress = 0
+  client.oneSecondProgress = 0
+  client.lastProgressReport = 0
+
   if headers.getOrDefault"Transfer-Encoding" == "chunked":
     result = await parseChunks(client)
   else:
@@ -733,8 +867,9 @@ proc parseBody(client: AsyncHttpClient,
     var contentLengthHeader = headers.getOrDefault"Content-Length"
     if contentLengthHeader != "":
       var length = contentLengthHeader.parseint()
+      client.contentTotal = length
       if length > 0:
-        result = await client.socket.recvFull(length)
+        result = await client.recvFull(length, client.timeout)
         if result == "":
           httpError("Got disconnected while trying to read body.")
         if result.len != length:
@@ -748,12 +883,12 @@ proc parseBody(client: AsyncHttpClient,
       if headers.getOrDefault"Connection" == "close" or httpVersion == "1.0":
         var buf = ""
         while true:
-          buf = await client.socket.recvFull(4000)
+          buf = await client.recvFull(4000, client.timeout)
           if buf == "": break
           result.add(buf)
 
-proc parseResponse(client: AsyncHttpClient,
-                   getBody: bool): Future[Response] {.async.} =
+proc parseResponse(client: HttpClient | AsyncHttpClient,
+                   getBody: bool): Future[Response] {.multisync.} =
   var parsedStatus = false
   var linei = 0
   var fullyRead = false
@@ -761,7 +896,10 @@ proc parseResponse(client: AsyncHttpClient,
   result.headers = newHttpHeaders()
   while true:
     linei = 0
-    line = await client.socket.recvLine()
+    when client is HttpClient:
+      line = await client.socket.recvLine(client.timeout)
+    else:
+      line = await client.socket.recvLine()
     if line == "": break # We've been disconnected.
     if line == "\c\L":
       fullyRead = true
@@ -803,11 +941,17 @@ proc parseResponse(client: AsyncHttpClient,
   else:
     result.body = ""
 
-proc newConnection(client: AsyncHttpClient, url: Uri) {.async.} =
+proc newConnection(client: HttpClient | AsyncHttpClient,
+                   url: Uri) {.multisync.} =
   if client.currentURL.hostname != url.hostname or
       client.currentURL.scheme != url.scheme:
     if client.connected: client.close()
-    client.socket = newAsyncSocket()
+
+    when client is HttpClient:
+      client.socket = newSocket()
+    elif client is AsyncHttpClient:
+      client.socket = newAsyncSocket()
+    else: {.fatal: "Unsupported client type".}
 
     # TODO: I should be able to write 'net.Port' here...
     let port =
@@ -829,60 +973,106 @@ proc newConnection(client: AsyncHttpClient, url: Uri) {.async.} =
     client.currentURL = url
     client.connected = true
 
-proc request*(client: AsyncHttpClient, url: string, httpMethod: string,
-              body = ""): Future[Response] {.async.} =
+proc request*(client: HttpClient | AsyncHttpClient, url: string,
+              httpMethod: string, body = ""): Future[Response] {.multisync.} =
   ## Connects to the hostname specified by the URL and performs a request
   ## using the custom method string specified by ``httpMethod``.
   ##
   ## Connection will kept alive. Further requests on the same ``client`` to
   ## the same hostname will not require a new connection to be made. The
   ## connection can be closed by using the ``close`` procedure.
-  ##
-  ## The returned future will complete once the request is completed.
-  let r = parseUri(url)
-  await newConnection(client, r)
+  let connectionUrl =
+    if client.proxy.isNil: parseUri(url) else: client.proxy.url
+  let requestUrl = parseUri(url)
+
+  let savedProxy = client.proxy # client's proxy may be overwritten.
+
+  if requestUrl.scheme == "https" and not client.proxy.isNil:
+    when defined(ssl):
+      client.proxy.url = connectionUrl
+      var connectUrl = requestUrl
+      connectUrl.scheme = "http"
+      connectUrl.port = "443"
+      let proxyResp = await request(client, $connectUrl, $HttpConnect)
+
+      if not proxyResp.status.startsWith("200"):
+        raise newException(HttpRequestError,
+                           "The proxy server rejected a CONNECT request, " &
+                           "so a secure connection could not be established.")
+      client.sslContext.wrapConnectedSocket(client.socket, handshakeAsClient)
+      client.proxy = nil
+    else:
+      raise newException(HttpRequestError,
+          "SSL support not available. Cannot connect to https site over proxy.")
+  else:
+    await newConnection(client, connectionUrl)
 
   if not client.headers.hasKey("user-agent") and client.userAgent != "":
     client.headers["User-Agent"] = client.userAgent
 
-  var headers = generateHeaders(r, $httpMethod, client.headers, body)
+  var headers = generateHeaders(requestUrl, httpMethod,
+                                client.headers, body, client.proxy)
 
   await client.socket.send(headers)
   if body != "":
     await client.socket.send(body)
 
-  result = await parseResponse(client, httpMethod != "httpHEAD")
+  result = await parseResponse(client,
+                               httpMethod.toLower() notin ["head", "connect"])
 
-proc request*(client: AsyncHttpClient, url: string, httpMethod = httpGET,
-              body = ""): Future[Response] =
+  # Restore the clients proxy in case it was overwritten.
+  client.proxy = savedProxy
+
+proc request*(client: HttpClient | AsyncHttpClient, url: string,
+              httpMethod = HttpGET, body = ""): Future[Response] {.multisync.} =
   ## Connects to the hostname specified by the URL and performs a request
   ## using the method specified.
   ##
-  ## Connection will kept alive. Further requests on the same ``client`` to
+  ## Connection will be kept alive. Further requests on the same ``client`` to
   ## the same hostname will not require a new connection to be made. The
   ## connection can be closed by using the ``close`` procedure.
   ##
-  ## The returned future will complete once the request is completed.
-  result = request(client, url, $httpMethod, body)
+  ## When a request is made to a different hostname, the current connection will
+  ## be closed.
+  result = await request(client, url, $httpMethod, body)
 
-proc get*(client: AsyncHttpClient, url: string): Future[Response] {.async.} =
+proc get*(client: HttpClient | AsyncHttpClient,
+          url: string): Future[Response] {.multisync.} =
   ## Connects to the hostname specified by the URL and performs a GET request.
   ##
   ## This procedure will follow redirects up to a maximum number of redirects
-  ## specified in ``newAsyncHttpClient``.
-  result = await client.request(url, httpGET)
+  ## specified in ``client.maxRedirects``.
+  result = await client.request(url, HttpGET)
+
+  # Handle redirects.
   var lastURL = url
   for i in 1..client.maxRedirects:
     if result.status.redirection():
       let redirectTo = getNewLocation(lastURL, result.headers)
-      result = await client.request(redirectTo, httpGET)
+      result = await client.request(redirectTo, HttpGET)
       lastURL = redirectTo
 
-proc post*(client: AsyncHttpClient, url: string, body = "", multipart: MultipartData = nil): Future[Response] {.async.} =
+proc getContent*(client: HttpClient | AsyncHttpClient,
+                 url: string): Future[string] {.multisync.} =
+  ## Connects to the hostname specified by the URL and performs a GET request.
+  ##
+  ## This procedure will follow redirects up to a maximum number of redirects
+  ## specified in ``client.maxRedirects``.
+  ##
+  ## A ``HttpRequestError`` will be raised if the server responds with a
+  ## client error (status code 4xx) or a server error (status code 5xx).
+  let resp = await get(client, url)
+  if resp.code.is4xx or resp.code.is5xx:
+    raise newException(HttpRequestError, resp.status)
+  else:
+    return resp.body
+
+proc post*(client: HttpClient | AsyncHttpClient, url: string, body = "",
+           multipart: MultipartData = nil): Future[Response] {.multisync.} =
   ## Connects to the hostname specified by the URL and performs a POST request.
   ##
   ## This procedure will follow redirects up to a maximum number of redirects
-  ## specified in ``newAsyncHttpClient``.
+  ## specified in ``client.maxRedirects``.
   let (mpHeader, mpBody) = format(multipart)
 
   template withNewLine(x): expr =
@@ -895,45 +1085,29 @@ proc post*(client: AsyncHttpClient, url: string, body = "", multipart: Multipart
     client.headers["Content-Type"] = mpHeader.split(": ")[1]
   client.headers["Content-Length"] = $len(xb)
 
-  result = await client.request(url, httpPOST, xb)
-
-when not defined(testing) and isMainModule:
-  when true:
-    # Async
-    proc main() {.async.} =
-      var client = newAsyncHttpClient()
-      var resp = await client.request("http://picheta.me")
-
-      echo("Got response: ", resp.status)
-      echo("Body:\n")
-      echo(resp.body)
-
-      resp = await client.request("http://picheta.me/asfas.html")
-      echo("Got response: ", resp.status)
-
-      resp = await client.request("http://picheta.me/aboutme.html")
-      echo("Got response: ", resp.status)
-
-      resp = await client.request("http://nim-lang.org/")
-      echo("Got response: ", resp.status)
-
-      resp = await client.request("http://nim-lang.org/download.html")
-      echo("Got response: ", resp.status)
-
-    waitFor main()
+  result = await client.request(url, HttpPOST, xb)
+  # Handle redirects.
+  var lastURL = url
+  for i in 1..client.maxRedirects:
+    if result.status.redirection():
+      let redirectTo = getNewLocation(lastURL, result.headers)
+      var meth = if result.status != "307": HttpGet else: HttpPost
+      result = await client.request(redirectTo, meth, xb)
+      lastURL = redirectTo
 
+proc postContent*(client: HttpClient | AsyncHttpClient, url: string,
+                  body = "",
+                  multipart: MultipartData = nil): Future[string]
+                  {.multisync.} =
+  ## Connects to the hostname specified by the URL and performs a POST request.
+  ##
+  ## This procedure will follow redirects up to a maximum number of redirects
+  ## specified in ``client.maxRedirects``.
+  ##
+  ## A ``HttpRequestError`` will be raised if the server responds with a
+  ## client error (status code 4xx) or a server error (status code 5xx).
+  let resp = await post(client, url, body, multipart)
+  if resp.code.is4xx or resp.code.is5xx:
+    raise newException(HttpRequestError, resp.status)
   else:
-    #downloadFile("http://force7.de/nim/index.html", "nimindex.html")
-    #downloadFile("http://www.httpwatch.com/", "ChunkTest.html")
-    #downloadFile("http://validator.w3.org/check?uri=http%3A%2F%2Fgoogle.com",
-    # "validator.html")
-
-    #var r = get("http://validator.w3.org/check?uri=http%3A%2F%2Fgoogle.com&
-    #  charset=%28detect+automatically%29&doctype=Inline&group=0")
-
-    var data = newMultipartData()
-    data["output"] = "soap12"
-    data["uploaded_file"] = ("test.html", "text/html",
-      "<html><head></head><body><p>test</p></body></html>")
-
-    echo postContent("http://validator.w3.org/check", multipart=data)
+    return resp.body
diff --git a/lib/pure/httpcore.nim b/lib/pure/httpcore.nim
index 562d16c19..8147f1c50 100644
--- a/lib/pure/httpcore.nim
+++ b/lib/pure/httpcore.nim
@@ -18,59 +18,87 @@ type
 
   HttpHeaderValues* = distinct seq[string]
 
-  HttpCode* = enum
-    Http100 = "100 Continue",
-    Http101 = "101 Switching Protocols",
-    Http200 = "200 OK",
-    Http201 = "201 Created",
-    Http202 = "202 Accepted",
-    Http203 = "203 Non-Authoritative Information",
-    Http204 = "204 No Content",
-    Http205 = "205 Reset Content",
-    Http206 = "206 Partial Content",
-    Http300 = "300 Multiple Choices",
-    Http301 = "301 Moved Permanently",
-    Http302 = "302 Found",
-    Http303 = "303 See Other",
-    Http304 = "304 Not Modified",
-    Http305 = "305 Use Proxy",
-    Http307 = "307 Temporary Redirect",
-    Http400 = "400 Bad Request",
-    Http401 = "401 Unauthorized",
-    Http403 = "403 Forbidden",
-    Http404 = "404 Not Found",
-    Http405 = "405 Method Not Allowed",
-    Http406 = "406 Not Acceptable",
-    Http407 = "407 Proxy Authentication Required",
-    Http408 = "408 Request Timeout",
-    Http409 = "409 Conflict",
-    Http410 = "410 Gone",
-    Http411 = "411 Length Required",
-    Http412 = "412 Precondition Failed",
-    Http413 = "413 Request Entity Too Large",
-    Http414 = "414 Request-URI Too Long",
-    Http415 = "415 Unsupported Media Type",
-    Http416 = "416 Requested Range Not Satisfiable",
-    Http417 = "417 Expectation Failed",
-    Http418 = "418 I'm a teapot",
-    Http421 = "421 Misdirected Request",
-    Http422 = "422 Unprocessable Entity",
-    Http426 = "426 Upgrade Required",
-    Http428 = "428 Precondition Required",
-    Http429 = "429 Too Many Requests",
-    Http431 = "431 Request Header Fields Too Large",
-    Http451 = "451 Unavailable For Legal Reasons",
-    Http500 = "500 Internal Server Error",
-    Http501 = "501 Not Implemented",
-    Http502 = "502 Bad Gateway",
-    Http503 = "503 Service Unavailable",
-    Http504 = "504 Gateway Timeout",
-    Http505 = "505 HTTP Version Not Supported"
+  # The range starts at '0' so that we don't have to explicitly initialise
+  # it. See: http://irclogs.nim-lang.org/19-09-2016.html#19:48:27 for context.
+  HttpCode* = distinct range[0 .. 599]
 
   HttpVersion* = enum
     HttpVer11,
     HttpVer10
 
+  HttpMethod* = enum  ## the requested HttpMethod
+    HttpHead,         ## Asks for the response identical to the one that would
+                      ## correspond to a GET request, but without the response
+                      ## body.
+    HttpGet,          ## Retrieves the specified resource.
+    HttpPost,         ## Submits data to be processed to the identified
+                      ## resource. The data is included in the body of the
+                      ## request.
+    HttpPut,          ## Uploads a representation of the specified resource.
+    HttpDelete,       ## Deletes the specified resource.
+    HttpTrace,        ## Echoes back the received request, so that a client
+                      ## can see what intermediate servers are adding or
+                      ## changing in the request.
+    HttpOptions,      ## Returns the HTTP methods that the server supports
+                      ## for specified address.
+    HttpConnect,      ## Converts the request connection to a transparent
+                      ## TCP/IP tunnel, usually used for proxies.
+    HttpPatch         ## Applies partial modifications to a resource.
+
+{.deprecated: [httpGet: HttpGet, httpHead: HttpHead, httpPost: HttpPost,
+               httpPut: HttpPut, httpDelete: HttpDelete, httpTrace: HttpTrace,
+               httpOptions: HttpOptions, httpConnect: HttpConnect].}
+
+
+const
+  Http100* = HttpCode(100)
+  Http101* = HttpCode(101)
+  Http200* = HttpCode(200)
+  Http201* = HttpCode(201)
+  Http202* = HttpCode(202)
+  Http203* = HttpCode(203)
+  Http204* = HttpCode(204)
+  Http205* = HttpCode(205)
+  Http206* = HttpCode(206)
+  Http300* = HttpCode(300)
+  Http301* = HttpCode(301)
+  Http302* = HttpCode(302)
+  Http303* = HttpCode(303)
+  Http304* = HttpCode(304)
+  Http305* = HttpCode(305)
+  Http307* = HttpCode(307)
+  Http400* = HttpCode(400)
+  Http401* = HttpCode(401)
+  Http403* = HttpCode(403)
+  Http404* = HttpCode(404)
+  Http405* = HttpCode(405)
+  Http406* = HttpCode(406)
+  Http407* = HttpCode(407)
+  Http408* = HttpCode(408)
+  Http409* = HttpCode(409)
+  Http410* = HttpCode(410)
+  Http411* = HttpCode(411)
+  Http412* = HttpCode(412)
+  Http413* = HttpCode(413)
+  Http414* = HttpCode(414)
+  Http415* = HttpCode(415)
+  Http416* = HttpCode(416)
+  Http417* = HttpCode(417)
+  Http418* = HttpCode(418)
+  Http421* = HttpCode(421)
+  Http422* = HttpCode(422)
+  Http426* = HttpCode(426)
+  Http428* = HttpCode(428)
+  Http429* = HttpCode(429)
+  Http431* = HttpCode(431)
+  Http451* = HttpCode(451)
+  Http500* = HttpCode(500)
+  Http501* = HttpCode(501)
+  Http502* = HttpCode(502)
+  Http503* = HttpCode(503)
+  Http504* = HttpCode(504)
+  Http505* = HttpCode(505)
+
 const headerLimit* = 10_000
 
 proc newHttpHeaders*(): HttpHeaders =
@@ -81,7 +109,7 @@ proc newHttpHeaders*(keyValuePairs:
     openarray[tuple[key: string, val: string]]): HttpHeaders =
   var pairs: seq[tuple[key: string, val: seq[string]]] = @[]
   for pair in keyValuePairs:
-    pairs.add((pair.key.toLower(), @[pair.val]))
+    pairs.add((pair.key.toLowerAscii(), @[pair.val]))
   new result
   result.table = newTable[string, seq[string]](pairs)
 
@@ -96,7 +124,7 @@ proc `[]`*(headers: HttpHeaders, key: string): HttpHeaderValues =
   ##
   ## To access multiple values of a key, use the overloaded ``[]`` below or
   ## to get all of them access the ``table`` field directly.
-  return headers.table[key.toLower].HttpHeaderValues
+  return headers.table[key.toLowerAscii].HttpHeaderValues
 
 converter toString*(values: HttpHeaderValues): string =
   return seq[string](values)[0]
@@ -105,26 +133,26 @@ proc `[]`*(headers: HttpHeaders, key: string, i: int): string =
   ## Returns the ``i``'th value associated with the given key. If there are
   ## no values associated with the key or the ``i``'th value doesn't exist,
   ## an exception is raised.
-  return headers.table[key.toLower][i]
+  return headers.table[key.toLowerAscii][i]
 
 proc `[]=`*(headers: HttpHeaders, key, value: string) =
   ## Sets the header entries associated with ``key`` to the specified value.
   ## Replaces any existing values.
-  headers.table[key.toLower] = @[value]
+  headers.table[key.toLowerAscii] = @[value]
 
 proc `[]=`*(headers: HttpHeaders, key: string, value: seq[string]) =
   ## Sets the header entries associated with ``key`` to the specified list of
   ## values.
   ## Replaces any existing values.
-  headers.table[key.toLower] = value
+  headers.table[key.toLowerAscii] = value
 
 proc add*(headers: HttpHeaders, key, value: string) =
   ## Adds the specified value to the specified key. Appends to any existing
   ## values associated with the key.
-  if not headers.table.hasKey(key.toLower):
-    headers.table[key.toLower] = @[value]
+  if not headers.table.hasKey(key.toLowerAscii):
+    headers.table[key.toLowerAscii] = @[value]
   else:
-    headers.table[key.toLower].add(value)
+    headers.table[key.toLowerAscii].add(value)
 
 iterator pairs*(headers: HttpHeaders): tuple[key, value: string] =
   ## Yields each key, value pair.
@@ -136,10 +164,10 @@ proc contains*(values: HttpHeaderValues, value: string): bool =
   ## Determines if ``value`` is one of the values inside ``values``. Comparison
   ## is performed without case sensitivity.
   for val in seq[string](values):
-    if val.toLower == value.toLower: return true
+    if val.toLowerAscii == value.toLowerAscii: return true
 
 proc hasKey*(headers: HttpHeaders, key: string): bool =
-  return headers.table.hasKey(key.toLower())
+  return headers.table.hasKey(key.toLowerAscii())
 
 proc getOrDefault*(headers: HttpHeaders, key: string,
     default = @[""].HttpHeaderValues): HttpHeaderValues =
@@ -188,6 +216,90 @@ proc `==`*(protocol: tuple[orig: string, major, minor: int],
     of HttpVer10: 0
   result = protocol.major == major and protocol.minor == minor
 
+proc contains*(methods: set[HttpMethod], x: string): bool =
+  return parseEnum[HttpMethod](x) in methods
+
+proc `$`*(code: HttpCode): string =
+  ## Converts the specified ``HttpCode`` into a HTTP status.
+  ##
+  ## For example:
+  ##
+  ##   .. code-block:: nim
+  ##       doAssert($Http404 == "404 Not Found")
+  case code.int
+  of 100: "100 Continue"
+  of 101: "101 Switching Protocols"
+  of 200: "200 OK"
+  of 201: "201 Created"
+  of 202: "202 Accepted"
+  of 203: "203 Non-Authoritative Information"
+  of 204: "204 No Content"
+  of 205: "205 Reset Content"
+  of 206: "206 Partial Content"
+  of 300: "300 Multiple Choices"
+  of 301: "301 Moved Permanently"
+  of 302: "302 Found"
+  of 303: "303 See Other"
+  of 304: "304 Not Modified"
+  of 305: "305 Use Proxy"
+  of 307: "307 Temporary Redirect"
+  of 400: "400 Bad Request"
+  of 401: "401 Unauthorized"
+  of 403: "403 Forbidden"
+  of 404: "404 Not Found"
+  of 405: "405 Method Not Allowed"
+  of 406: "406 Not Acceptable"
+  of 407: "407 Proxy Authentication Required"
+  of 408: "408 Request Timeout"
+  of 409: "409 Conflict"
+  of 410: "410 Gone"
+  of 411: "411 Length Required"
+  of 412: "412 Precondition Failed"
+  of 413: "413 Request Entity Too Large"
+  of 414: "414 Request-URI Too Long"
+  of 415: "415 Unsupported Media Type"
+  of 416: "416 Requested Range Not Satisfiable"
+  of 417: "417 Expectation Failed"
+  of 418: "418 I'm a teapot"
+  of 421: "421 Misdirected Request"
+  of 422: "422 Unprocessable Entity"
+  of 426: "426 Upgrade Required"
+  of 428: "428 Precondition Required"
+  of 429: "429 Too Many Requests"
+  of 431: "431 Request Header Fields Too Large"
+  of 451: "451 Unavailable For Legal Reasons"
+  of 500: "500 Internal Server Error"
+  of 501: "501 Not Implemented"
+  of 502: "502 Bad Gateway"
+  of 503: "503 Service Unavailable"
+  of 504: "504 Gateway Timeout"
+  of 505: "505 HTTP Version Not Supported"
+  else: $(int(code))
+
+proc `==`*(a, b: HttpCode): bool {.borrow.}
+
+proc `==`*(rawCode: string, code: HttpCode): bool =
+  return rawCode.toLower() == ($code).toLower()
+
+proc is2xx*(code: HttpCode): bool =
+  ## Determines whether ``code`` is a 2xx HTTP status code.
+  return code.int in {200 .. 299}
+
+proc is3xx*(code: HttpCode): bool =
+  ## Determines whether ``code`` is a 3xx HTTP status code.
+  return code.int in {300 .. 399}
+
+proc is4xx*(code: HttpCode): bool =
+  ## Determines whether ``code`` is a 4xx HTTP status code.
+  return code.int in {400 .. 499}
+
+proc is5xx*(code: HttpCode): bool =
+  ## Determines whether ``code`` is a 5xx HTTP status code.
+  return code.int in {500 .. 599}
+
+proc `$`*(httpMethod: HttpMethod): string =
+  return (system.`$`(httpMethod))[4 .. ^1].toUpper()
+
 when isMainModule:
   var test = newHttpHeaders()
   test["Connection"] = @["Upgrade", "Close"]
diff --git a/lib/pure/includes/asyncfutures.nim b/lib/pure/includes/asyncfutures.nim
new file mode 100644
index 000000000..d78464a91
--- /dev/null
+++ b/lib/pure/includes/asyncfutures.nim
@@ -0,0 +1,295 @@
+
+# TODO: This shouldn't need to be included, but should ideally be exported.
+type
+  FutureBase* = ref object of RootObj ## Untyped future.
+    cb: proc () {.closure,gcsafe.}
+    finished: bool
+    error*: ref Exception ## Stored exception
+    errorStackTrace*: string
+    when not defined(release):
+      stackTrace: string ## For debugging purposes only.
+      id: int
+      fromProc: string
+
+  Future*[T] = ref object of FutureBase ## Typed future.
+    value: T ## Stored value
+
+  FutureVar*[T] = distinct Future[T]
+
+  FutureError* = object of Exception
+    cause*: FutureBase
+
+{.deprecated: [PFutureBase: FutureBase, PFuture: Future].}
+
+when not defined(release):
+  var currentID = 0
+
+proc callSoon*(cbproc: proc ()) {.gcsafe.}
+
+proc newFuture*[T](fromProc: string = "unspecified"): Future[T] =
+  ## Creates a new future.
+  ##
+  ## Specifying ``fromProc``, which is a string specifying the name of the proc
+  ## that this future belongs to, is a good habit as it helps with debugging.
+  new(result)
+  result.finished = false
+  when not defined(release):
+    result.stackTrace = getStackTrace()
+    result.id = currentID
+    result.fromProc = fromProc
+    currentID.inc()
+
+proc newFutureVar*[T](fromProc = "unspecified"): FutureVar[T] =
+  ## Create a new ``FutureVar``. This Future type is ideally suited for
+  ## situations where you want to avoid unnecessary allocations of Futures.
+  ##
+  ## Specifying ``fromProc``, which is a string specifying the name of the proc
+  ## that this future belongs to, is a good habit as it helps with debugging.
+  result = FutureVar[T](newFuture[T](fromProc))
+
+proc clean*[T](future: FutureVar[T]) =
+  ## Resets the ``finished`` status of ``future``.
+  Future[T](future).finished = false
+  Future[T](future).error = nil
+
+proc checkFinished[T](future: Future[T]) =
+  ## Checks whether `future` is finished. If it is then raises a
+  ## ``FutureError``.
+  when not defined(release):
+    if future.finished:
+      var msg = ""
+      msg.add("An attempt was made to complete a Future more than once. ")
+      msg.add("Details:")
+      msg.add("\n  Future ID: " & $future.id)
+      msg.add("\n  Created in proc: " & future.fromProc)
+      msg.add("\n  Stack trace to moment of creation:")
+      msg.add("\n" & indent(future.stackTrace.strip(), 4))
+      when T is string:
+        msg.add("\n  Contents (string): ")
+        msg.add("\n" & indent(future.value.repr, 4))
+      msg.add("\n  Stack trace to moment of secondary completion:")
+      msg.add("\n" & indent(getStackTrace().strip(), 4))
+      var err = newException(FutureError, msg)
+      err.cause = future
+      raise err
+
+proc complete*[T](future: Future[T], val: T) =
+  ## Completes ``future`` with value ``val``.
+  #assert(not future.finished, "Future already finished, cannot finish twice.")
+  checkFinished(future)
+  assert(future.error == nil)
+  future.value = val
+  future.finished = true
+  if future.cb != nil:
+    future.cb()
+
+proc complete*(future: Future[void]) =
+  ## Completes a void ``future``.
+  #assert(not future.finished, "Future already finished, cannot finish twice.")
+  checkFinished(future)
+  assert(future.error == nil)
+  future.finished = true
+  if future.cb != nil:
+    future.cb()
+
+proc complete*[T](future: FutureVar[T]) =
+  ## Completes a ``FutureVar``.
+  template fut: expr = Future[T](future)
+  checkFinished(fut)
+  assert(fut.error == nil)
+  fut.finished = true
+  if fut.cb != nil:
+    fut.cb()
+
+proc complete*[T](future: FutureVar[T], val: T) =
+  ## Completes a ``FutureVar`` with value ``val``.
+  ##
+  ## Any previously stored value will be overwritten.
+  template fut: expr = Future[T](future)
+  checkFinished(fut)
+  assert(fut.error == nil)
+  fut.finished = true
+  fut.value = val
+  if fut.cb != nil:
+    fut.cb()
+
+proc fail*[T](future: Future[T], error: ref Exception) =
+  ## Completes ``future`` with ``error``.
+  #assert(not future.finished, "Future already finished, cannot finish twice.")
+  checkFinished(future)
+  future.finished = true
+  future.error = error
+  future.errorStackTrace =
+    if getStackTrace(error) == "": getStackTrace() else: getStackTrace(error)
+  if future.cb != nil:
+    future.cb()
+  else:
+    # This is to prevent exceptions from being silently ignored when a future
+    # is discarded.
+    # TODO: This may turn out to be a bad idea.
+    # Turns out this is a bad idea.
+    #raise error
+    discard
+
+proc `callback=`*(future: FutureBase, cb: proc () {.closure,gcsafe.}) =
+  ## Sets the callback proc to be called when the future completes.
+  ##
+  ## If future has already completed then ``cb`` will be called immediately.
+  ##
+  ## **Note**: You most likely want the other ``callback`` setter which
+  ## passes ``future`` as a param to the callback.
+  future.cb = cb
+  if future.finished:
+    callSoon(future.cb)
+
+proc `callback=`*[T](future: Future[T],
+    cb: proc (future: Future[T]) {.closure,gcsafe.}) =
+  ## Sets the callback proc to be called when the future completes.
+  ##
+  ## If future has already completed then ``cb`` will be called immediately.
+  future.callback = proc () = cb(future)
+
+proc injectStacktrace[T](future: Future[T]) =
+  # TODO: Come up with something better.
+  when not defined(release):
+    var msg = ""
+    msg.add("\n  " & future.fromProc & "'s lead up to read of failed Future:")
+
+    if not future.errorStackTrace.isNil and future.errorStackTrace != "":
+      msg.add("\n" & indent(future.errorStackTrace.strip(), 4))
+    else:
+      msg.add("\n    Empty or nil stack trace.")
+    future.error.msg.add(msg)
+
+proc read*[T](future: Future[T] | FutureVar[T]): T =
+  ## Retrieves the value of ``future``. Future must be finished otherwise
+  ## this function will fail with a ``ValueError`` exception.
+  ##
+  ## If the result of the future is an error then that error will be raised.
+  {.push hint[ConvFromXtoItselfNotNeeded]: off.}
+  let fut = Future[T](future)
+  {.pop.}
+  if fut.finished:
+    if fut.error != nil:
+      injectStacktrace(fut)
+      raise fut.error
+    when T isnot void:
+      return fut.value
+  else:
+    # TODO: Make a custom exception type for this?
+    raise newException(ValueError, "Future still in progress.")
+
+proc readError*[T](future: Future[T]): ref Exception =
+  ## Retrieves the exception stored in ``future``.
+  ##
+  ## An ``ValueError`` exception will be thrown if no exception exists
+  ## in the specified Future.
+  if future.error != nil: return future.error
+  else:
+    raise newException(ValueError, "No error in future.")
+
+proc mget*[T](future: FutureVar[T]): var T =
+  ## Returns a mutable value stored in ``future``.
+  ##
+  ## Unlike ``read``, this function will not raise an exception if the
+  ## Future has not been finished.
+  result = Future[T](future).value
+
+proc finished*[T](future: Future[T] | FutureVar[T]): bool =
+  ## Determines whether ``future`` has completed.
+  ##
+  ## ``True`` may indicate an error or a value. Use ``failed`` to distinguish.
+  (Future[T](future)).finished
+
+proc failed*(future: FutureBase): bool =
+  ## Determines whether ``future`` completed with an error.
+  return future.error != nil
+
+proc asyncCheck*[T](future: Future[T]) =
+  ## Sets a callback on ``future`` which raises an exception if the future
+  ## finished with an error.
+  ##
+  ## This should be used instead of ``discard`` to discard void futures.
+  future.callback =
+    proc () =
+      if future.failed:
+        injectStacktrace(future)
+        raise future.error
+
+proc `and`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
+  ## Returns a future which will complete once both ``fut1`` and ``fut2``
+  ## complete.
+  var retFuture = newFuture[void]("asyncdispatch.`and`")
+  fut1.callback =
+    proc () =
+      if not retFuture.finished:
+        if fut1.failed: retFuture.fail(fut1.error)
+        elif fut2.finished: retFuture.complete()
+  fut2.callback =
+    proc () =
+      if not retFuture.finished:
+        if fut2.failed: retFuture.fail(fut2.error)
+        elif fut1.finished: retFuture.complete()
+  return retFuture
+
+proc `or`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
+  ## Returns a future which will complete once either ``fut1`` or ``fut2``
+  ## complete.
+  var retFuture = newFuture[void]("asyncdispatch.`or`")
+  proc cb[X](fut: Future[X]) =
+    if fut.failed: retFuture.fail(fut.error)
+    if not retFuture.finished: retFuture.complete()
+  fut1.callback = cb[T]
+  fut2.callback = cb[Y]
+  return retFuture
+
+proc all*[T](futs: varargs[Future[T]]): auto =
+  ## Returns a future which will complete once
+  ## all futures in ``futs`` complete.
+  ##
+  ## If the awaited futures are not ``Future[void]``, the returned future
+  ## will hold the values of all awaited futures in a sequence.
+  ##
+  ## If the awaited futures *are* ``Future[void]``,
+  ## this proc returns ``Future[void]``.
+
+  when T is void:
+    var
+      retFuture = newFuture[void]("asyncdispatch.all")
+      completedFutures = 0
+
+    let totalFutures = len(futs)
+
+    for fut in futs:
+      fut.callback = proc(f: Future[T]) =
+        if f.failed:
+          retFuture.fail(f.error)
+        elif not retFuture.finished:
+          inc(completedFutures)
+
+          if completedFutures == totalFutures:
+            retFuture.complete()
+
+    return retFuture
+
+  else:
+    var
+      retFuture = newFuture[seq[T]]("asyncdispatch.all")
+      retValues = newSeq[T](len(futs))
+      completedFutures = 0
+
+    for i, fut in futs:
+      proc setCallback(i: int) =
+        fut.callback = proc(f: Future[T]) =
+          if f.failed:
+            retFuture.fail(f.error)
+          elif not retFuture.finished:
+            retValues[i] = f.read()
+            inc(completedFutures)
+
+            if completedFutures == len(retValues):
+              retFuture.complete(retValues)
+
+      setCallback(i)
+
+    return retFuture
diff --git a/lib/pure/ioselectors.nim b/lib/pure/ioselectors.nim
index a5d5d2c01..adb3497ac 100644
--- a/lib/pure/ioselectors.nim
+++ b/lib/pure/ioselectors.nim
@@ -44,14 +44,21 @@ when defined(nimdoc):
 
     Event* {.pure.} = enum
       ## An enum which hold event types
-      Read,    ## Descriptor is available for read
-      Write,   ## Descriptor is available for write
-      Timer,   ## Timer descriptor is completed
-      Signal,  ## Signal is raised
-      Process, ## Process is finished
-      Vnode,   ## Currently not supported
-      User,    ## User event is raised
-      Error    ## Error happens while waiting, for descriptor
+      Read,        ## Descriptor is available for read
+      Write,       ## Descriptor is available for write
+      Timer,       ## Timer descriptor is completed
+      Signal,      ## Signal is raised
+      Process,     ## Process is finished
+      Vnode,       ## BSD specific file change happens
+      User,        ## User event is raised
+      Error,       ## Error happens while waiting, for descriptor
+      VnodeWrite,  ## NOTE_WRITE (BSD specific, write to file occured)
+      VnodeDelete, ## NOTE_DELETE (BSD specific, unlink of file occured)
+      VnodeExtend, ## NOTE_EXTEND (BSD specific, file extended)
+      VnodeAttrib, ## NOTE_ATTRIB (BSD specific, file attributes changed)
+      VnodeLink,   ## NOTE_LINK (BSD specific, file link count changed)
+      VnodeRename, ## NOTE_RENAME (BSD specific, file renamed)
+      VnodeRevoke  ## NOTE_REVOKE (BSD specific, file revoke occured)
 
     ReadyKey*[T] = object
       ## An object which holds result for descriptor
@@ -107,6 +114,15 @@ when defined(nimdoc):
     ## ``data`` application-defined data, which to be passed, when
     ## ``ev`` happens.
 
+  proc registerVnode*[T](s: Selector[T], fd: cint, events: set[Event],
+                         data: T) =
+    ## Registers selector BSD/MacOSX specific vnode events for file
+    ## descriptor ``fd`` and events ``events``.
+    ## ``data`` application-defined data, which to be passed, when
+    ## vnode event happens.
+    ##
+    ## This function is supported only by BSD and MacOSX.
+
   proc newSelectEvent*(): SelectEvent =
     ## Creates new event ``SelectEvent``.
 
@@ -194,7 +210,9 @@ else:
       deallocShared(cast[pointer](sa))
   type
     Event* {.pure.} = enum
-      Read, Write, Timer, Signal, Process, Vnode, User, Error, Oneshot
+      Read, Write, Timer, Signal, Process, Vnode, User, Error, Oneshot,
+      VnodeWrite, VnodeDelete, VnodeExtend, VnodeAttrib, VnodeLink,
+      VnodeRename, VnodeRevoke
 
     ReadyKey*[T] = object
       fd* : int
diff --git a/lib/pure/ioselects/ioselectors_epoll.nim b/lib/pure/ioselects/ioselectors_epoll.nim
index 92b2cdc07..4bc6e9d51 100644
--- a/lib/pure/ioselects/ioselectors_epoll.nim
+++ b/lib/pure/ioselects/ioselectors_epoll.nim
@@ -407,8 +407,8 @@ proc selectInto*[T](s: Selector[T], timeout: int,
             inc(i)
             continue
         elif Event.User in skey.events:
-          var data: uint = 0
-          if posix.read(fdi.cint, addr data, sizeof(uint)) != sizeof(uint):
+          var data: uint64 = 0
+          if posix.read(fdi.cint, addr data, sizeof(uint64)) != sizeof(uint64):
             let err = osLastError()
             if err == OSErrorCode(EAGAIN):
               inc(i)
diff --git a/lib/pure/ioselects/ioselectors_kqueue.nim b/lib/pure/ioselects/ioselectors_kqueue.nim
index 3e86f19aa..cdaeeae26 100644
--- a/lib/pure/ioselects/ioselectors_kqueue.nim
+++ b/lib/pure/ioselects/ioselectors_kqueue.nim
@@ -262,6 +262,30 @@ proc registerEvent*[T](s: Selector[T], ev: SelectEvent, data: T) =
   modifyKQueue(s, fdi.uint, EVFILT_READ, EV_ADD, 0, 0, nil)
   inc(s.count)
 
+template processVnodeEvents(events: set[Event]): cuint =
+  var rfflags = 0.cuint
+  if events == {Event.VnodeWrite, Event.VnodeDelete, Event.VnodeExtend,
+                Event.VnodeAttrib, Event.VnodeLink, Event.VnodeRename,
+                Event.VnodeRevoke}:
+    rfflags = NOTE_DELETE or NOTE_WRITE or NOTE_EXTEND or NOTE_ATTRIB or
+              NOTE_LINK or NOTE_RENAME or NOTE_REVOKE
+  else:
+    if Event.VnodeDelete in events: rfflags = rfflags or NOTE_DELETE
+    if Event.VnodeWrite in events: rfflags = rfflags or NOTE_WRITE
+    if Event.VnodeExtend in events: rfflags = rfflags or NOTE_EXTEND
+    if Event.VnodeAttrib in events: rfflags = rfflags or NOTE_ATTRIB
+    if Event.VnodeLink in events: rfflags = rfflags or NOTE_LINK
+    if Event.VnodeRename in events: rfflags = rfflags or NOTE_RENAME
+    if Event.VnodeRevoke in events: rfflags = rfflags or NOTE_REVOKE
+  rfflags
+
+proc registerVnode*[T](s: Selector[T], fd: cint, events: set[Event], data: T) =
+  let fdi = fd.int
+  setKey(s, fdi, fdi, {Event.Vnode} + events, 0, data)
+  var fflags = processVnodeEvents(events)
+  modifyKQueue(s, fdi.uint, EVFILT_VNODE, EV_ADD or EV_CLEAR, fflags, 0, nil)
+  inc(s.count)
+
 proc unregister*[T](s: Selector[T], fd: int|SocketHandle) =
   let fdi = int(fd)
   s.checkFd(fdi)
@@ -295,6 +319,9 @@ proc unregister*[T](s: Selector[T], fd: int|SocketHandle) =
       discard posix.close(cint(pkey.key.fd))
       modifyKQueue(s, fdi.uint, EVFILT_PROC, EV_DELETE, 0, 0, nil)
       dec(s.count)
+    elif Event.Vnode in pkey.events:
+      modifyKQueue(s, fdi.uint, EVFILT_VNODE, EV_DELETE, 0, 0, nil)
+      dec(s.count)
     elif Event.User in pkey.events:
       modifyKQueue(s, fdi.uint, EVFILT_READ, EV_DELETE, 0, 0, nil)
       dec(s.count)
@@ -392,6 +419,20 @@ proc selectInto*[T](s: Selector[T], timeout: int,
         of EVFILT_VNODE:
           pkey = addr(s.fds[kevent.ident.int])
           pkey.key.events = {Event.Vnode}
+          if (kevent.fflags and NOTE_DELETE) != 0:
+            pkey.key.events.incl(Event.VnodeDelete)
+          if (kevent.fflags and NOTE_WRITE) != 0:
+            pkey.key.events.incl(Event.VnodeWrite)
+          if (kevent.fflags and NOTE_EXTEND) != 0:
+            pkey.key.events.incl(Event.VnodeExtend)
+          if (kevent.fflags and NOTE_ATTRIB) != 0:
+            pkey.key.events.incl(Event.VnodeAttrib)
+          if (kevent.fflags and NOTE_LINK) != 0:
+            pkey.key.events.incl(Event.VnodeLink)
+          if (kevent.fflags and NOTE_RENAME) != 0:
+            pkey.key.events.incl(Event.VnodeRename)
+          if (kevent.fflags and NOTE_REVOKE) != 0:
+            pkey.key.events.incl(Event.VnodeRevoke)
         of EVFILT_SIGNAL:
           pkey = addr(s.fds[cast[int](kevent.udata)])
           pkey.key.events = {Event.Signal}
diff --git a/lib/pure/ioselects/ioselectors_poll.nim b/lib/pure/ioselects/ioselectors_poll.nim
index d2a0a1273..56be35c70 100644
--- a/lib/pure/ioselects/ioselectors_poll.nim
+++ b/lib/pure/ioselects/ioselectors_poll.nim
@@ -245,7 +245,7 @@ proc selectInto*[T](s: Selector[T], timeout: int,
             skey.key.events.incl(Event.Read)
             if Event.User in skey.events:
               var data: uint64 = 0
-              if posix.read(fd, addr data, sizeof(int)) != sizeof(int):
+              if posix.read(fd, addr data, sizeof(uint64)) != sizeof(uint64):
                 let err = osLastError()
                 if err != OSErrorCode(EAGAIN):
                   raiseOSError(osLastError())
diff --git a/lib/pure/ioselects/ioselectors_select.nim b/lib/pure/ioselects/ioselectors_select.nim
index f8099f9a0..ddb70b507 100644
--- a/lib/pure/ioselects/ioselectors_select.nim
+++ b/lib/pure/ioselects/ioselectors_select.nim
@@ -155,9 +155,9 @@ when defined(windows):
     result.wsock = wsock
 
   proc setEvent*(ev: SelectEvent) =
-    var data: int = 1
+    var data: uint64 = 1
     if winlean.send(ev.wsock, cast[pointer](addr data),
-                    cint(sizeof(int)), 0) != sizeof(int):
+                    cint(sizeof(uint64)), 0) != sizeof(uint64):
       raiseOSError(osLastError())
 
   proc close*(ev: SelectEvent) =
diff --git a/lib/pure/json.nim b/lib/pure/json.nim
index 19947fbc2..0b7908c02 100644
--- a/lib/pure/json.nim
+++ b/lib/pure/json.nim
@@ -24,6 +24,8 @@
 ##  jobj["test"] = newJFloat(0.7)  # create or update
 ##  echo($jobj["test"].fnum)
 ##  echo($jobj["key2"].bval)
+##  echo jobj{"missing key"}.getFNum(0.1)  # read a float value using a default
+##  jobj{"a", "b", "c"} = newJFloat(3.3)  # created nested keys
 ##
 ## Results in:
 ##
@@ -580,7 +582,7 @@ type
     of JNull:
       nil
     of JObject:
-      fields*: Table[string, JsonNode]
+      fields*: OrderedTable[string, JsonNode]
     of JArray:
       elems*: seq[JsonNode]
 
@@ -630,7 +632,7 @@ proc newJObject*(): JsonNode =
   ## Creates a new `JObject JsonNode`
   new(result)
   result.kind = JObject
-  result.fields = initTable[string, JsonNode](4)
+  result.fields = initOrderedTable[string, JsonNode](4)
 
 proc newJArray*(): JsonNode =
   ## Creates a new `JArray JsonNode`
@@ -670,8 +672,8 @@ proc getBVal*(n: JsonNode, default: bool = false): bool =
   else: return n.bval
 
 proc getFields*(n: JsonNode,
-    default = initTable[string, JsonNode](4)):
-        Table[string, JsonNode] =
+    default = initOrderedTable[string, JsonNode](4)):
+        OrderedTable[string, JsonNode] =
   ## Retrieves the key, value pairs of a `JObject JsonNode`.
   ##
   ## Returns ``default`` if ``n`` is not a ``JObject``, or if ``n`` is nil.
@@ -760,12 +762,12 @@ proc toJson(x: NimNode): NimNode {.compiletime.} =
 
   result = prefix(result, "%")
 
-macro `%*`*(x: expr): expr =
+macro `%*`*(x: untyped): untyped =
   ## Convert an expression to a JsonNode directly, without having to specify
   ## `%` for every element.
   result = toJson(x)
 
-proc `==`* (a,b: JsonNode): bool =
+proc `==`* (a, b: JsonNode): bool =
   ## Check two nodes for equality
   if a.isNil:
     if b.isNil: return true
@@ -773,23 +775,29 @@ proc `==`* (a,b: JsonNode): bool =
   elif b.isNil or a.kind != b.kind:
     return false
   else:
-    return case a.kind
+    case a.kind
     of JString:
-      a.str == b.str
+      result = a.str == b.str
     of JInt:
-      a.num == b.num
+      result = a.num == b.num
     of JFloat:
-      a.fnum == b.fnum
+      result = a.fnum == b.fnum
     of JBool:
-      a.bval == b.bval
+      result = a.bval == b.bval
     of JNull:
-      true
+      result = true
     of JArray:
-      a.elems == b.elems
+      result = a.elems == b.elems
     of JObject:
-      a.fields == b.fields
+     # we cannot use OrderedTable's equality here as
+     # the order does not matter for equality here.
+     if a.fields.len != b.fields.len: return false
+     for key, val in a.fields:
+       if not b.fields.hasKey(key): return false
+       if b.fields[key] != val: return false
+     result = true
 
-proc hash*(n: Table[string, JsonNode]): Hash {.noSideEffect.}
+proc hash*(n: OrderedTable[string, JsonNode]): Hash {.noSideEffect.}
 
 proc hash*(n: JsonNode): Hash =
   ## Compute the hash for a JSON node
@@ -807,9 +815,9 @@ proc hash*(n: JsonNode): Hash =
   of JString:
     result = hash(n.str)
   of JNull:
-    result = hash(0)
+    result = Hash(0)
 
-proc hash*(n: Table[string, JsonNode]): Hash =
+proc hash*(n: OrderedTable[string, JsonNode]): Hash =
   for key, val in n:
     result = result xor (hash(key) !& hash(val))
   result = !$result
@@ -1195,19 +1203,19 @@ else:
   proc len(x: JSObject): int =
     assert x.getVarType == JArray
     asm """
-      return `x`.length;
+      `result` = `x`.length;
     """
 
   proc `[]`(x: JSObject, y: string): JSObject =
     assert x.getVarType == JObject
     asm """
-      return `x`[`y`];
+      `result` = `x`[`y`];
     """
 
   proc `[]`(x: JSObject, y: int): JSObject =
     assert x.getVarType == JArray
     asm """
-      return `x`[`y`];
+      `result` = `x`[`y`];
     """
 
   proc convertObject(x: JSObject): JsonNode =
diff --git a/lib/pure/logging.nim b/lib/pure/logging.nim
index 6a27e6af8..b23b1e5bb 100644
--- a/lib/pure/logging.nim
+++ b/lib/pure/logging.nim
@@ -47,7 +47,9 @@
 ## **Warning:** The global list of handlers is a thread var, this means that
 ## the handlers must be re-added in each thread.
 
-import strutils, os, times
+import strutils, times
+when not defined(js):
+  import os
 
 type
   Level* = enum  ## logging level
@@ -77,21 +79,24 @@ type
   ConsoleLogger* = ref object of Logger ## logger that writes the messages to the
                                         ## console
 
-  FileLogger* = ref object of Logger ## logger that writes the messages to a file
-    file*: File  ## the wrapped file.
+when not defined(js):
+  type
+    FileLogger* = ref object of Logger ## logger that writes the messages to a file
+      file*: File  ## the wrapped file.
 
-  RollingFileLogger* = ref object of FileLogger ## logger that writes the
-                                                ## messages to a file and
-                                                ## performs log rotation
-    maxLines: int # maximum number of lines
-    curLine : int
-    baseName: string # initial filename
-    baseMode: FileMode # initial file mode
-    logFiles: int # how many log files already created, e.g. basename.1, basename.2...
-    bufSize: int # size of output buffer (-1: use system defaults, 0: unbuffered, >0: fixed buffer size)
+    RollingFileLogger* = ref object of FileLogger ## logger that writes the
+                                                  ## messages to a file and
+                                                  ## performs log rotation
+      maxLines: int # maximum number of lines
+      curLine : int
+      baseName: string # initial filename
+      baseMode: FileMode # initial file mode
+      logFiles: int # how many log files already created, e.g. basename.1, basename.2...
+      bufSize: int # size of output buffer (-1: use system defaults, 0: unbuffered, >0: fixed buffer size)
 
-{.deprecated: [TLevel: Level, PLogger: Logger, PConsoleLogger: ConsoleLogger,
-    PFileLogger: FileLogger, PRollingFileLogger: RollingFileLogger].}
+  {.deprecated: [PFileLogger: FileLogger, PRollingFileLogger: RollingFileLogger].}
+
+{.deprecated: [TLevel: Level, PLogger: Logger, PConsoleLogger: ConsoleLogger].}
 
 var
   level {.threadvar.}: Level   ## global log filter
@@ -112,7 +117,7 @@ proc substituteLog*(frmt: string, level: Level, args: varargs[string, `$`]): str
     else:
       inc(i)
       var v = ""
-      var app = getAppFilename()
+      let app = when defined(js): "" else: getAppFilename()
       while frmt[i] in IdentChars:
         v.add(toLower(frmt[i]))
         inc(i)
@@ -121,8 +126,10 @@ proc substituteLog*(frmt: string, level: Level, args: varargs[string, `$`]): str
       of "time": result.add(getClockStr())
       of "datetime": result.add(getDateStr() & "T" & getClockStr())
       of "app":  result.add(app)
-      of "appdir": result.add(app.splitFile.dir)
-      of "appname": result.add(app.splitFile.name)
+      of "appdir":
+        when not defined(js): result.add(app.splitFile.dir)
+      of "appname":
+        when not defined(js): result.add(app.splitFile.name)
       of "levelid": result.add(LevelNames[level][0])
       of "levelname": result.add(LevelNames[level])
       else: discard
@@ -139,19 +146,13 @@ method log*(logger: Logger, level: Level, args: varargs[string, `$`]) {.
 method log*(logger: ConsoleLogger, level: Level, args: varargs[string, `$`]) =
   ## Logs to the console using ``logger`` only.
   if level >= logging.level and level >= logger.levelThreshold:
-    writeLine(stdout, substituteLog(logger.fmtStr, level, args))
-    if level in {lvlError, lvlFatal}: flushFile(stdout)
-
-method log*(logger: FileLogger, level: Level, args: varargs[string, `$`]) =
-  ## Logs to a file using ``logger`` only.
-  if level >= logging.level and level >= logger.levelThreshold:
-    writeLine(logger.file, substituteLog(logger.fmtStr, level, args))
-    if level in {lvlError, lvlFatal}: flushFile(logger.file)
-
-proc defaultFilename*(): string =
-  ## Returns the default filename for a logger.
-  var (path, name, _) = splitFile(getAppFilename())
-  result = changeFileExt(path / name, "log")
+    let ln = substituteLog(logger.fmtStr, level, args)
+    when defined(js):
+      let cln: cstring = ln
+      {.emit: "console.log(`cln`);".}
+    else:
+      writeLine(stdout, ln)
+      if level in {lvlError, lvlFatal}: flushFile(stdout)
 
 proc newConsoleLogger*(levelThreshold = lvlAll, fmtStr = defaultFmtStr): ConsoleLogger =
   ## Creates a new console logger. This logger logs to the console.
@@ -159,87 +160,99 @@ proc newConsoleLogger*(levelThreshold = lvlAll, fmtStr = defaultFmtStr): Console
   result.fmtStr = fmtStr
   result.levelThreshold = levelThreshold
 
-proc newFileLogger*(filename = defaultFilename(),
-                    mode: FileMode = fmAppend,
-                    levelThreshold = lvlAll,
-                    fmtStr = defaultFmtStr,
-                    bufSize: int = -1): FileLogger =
-  ## Creates a new file logger. This logger logs to a file.
-  ## Use ``bufSize`` as size of the output buffer when writing the file
-  ## (-1: use system defaults, 0: unbuffered, >0: fixed buffer size).
-  new(result)
-  result.levelThreshold = levelThreshold
-  result.file = open(filename, mode, bufSize = bufSize)
-  result.fmtStr = fmtStr
-
-# ------
-
-proc countLogLines(logger: RollingFileLogger): int =
-  result = 0
-  for line in logger.file.lines():
-    result.inc()
-
-proc countFiles(filename: string): int =
-  # Example: file.log.1
-  result = 0
-  let (dir, name, ext) = splitFile(filename)
-  for kind, path in walkDir(dir):
-    if kind == pcFile:
-      let llfn = name & ext & ExtSep
-      if path.extractFilename.startsWith(llfn):
-        let numS = path.extractFilename[llfn.len .. ^1]
-        try:
-          let num = parseInt(numS)
-          if num > result:
-            result = num
-        except ValueError: discard
-
-proc newRollingFileLogger*(filename = defaultFilename(),
-                           mode: FileMode = fmReadWrite,
-                           levelThreshold = lvlAll,
-                           fmtStr = defaultFmtStr,
-                           maxLines = 1000,
-                           bufSize: int = -1): RollingFileLogger =
-  ## Creates a new rolling file logger. Once a file reaches ``maxLines`` lines
-  ## a new log file will be started and the old will be renamed.
-  ## Use ``bufSize`` as size of the output buffer when writing the file
-  ## (-1: use system defaults, 0: unbuffered, >0: fixed buffer size).
-  new(result)
-  result.levelThreshold = levelThreshold
-  result.fmtStr = fmtStr
-  result.maxLines = maxLines
-  result.bufSize = bufSize
-  result.file = open(filename, mode, bufSize=result.bufSize)
-  result.curLine = 0
-  result.baseName = filename
-  result.baseMode = mode
-
-  result.logFiles = countFiles(filename)
-
-  if mode == fmAppend:
-    # We need to get a line count because we will be appending to the file.
-    result.curLine = countLogLines(result)
-
-proc rotate(logger: RollingFileLogger) =
-  let (dir, name, ext) = splitFile(logger.baseName)
-  for i in countdown(logger.logFiles, 0):
-    let srcSuff = if i != 0: ExtSep & $i else: ""
-    moveFile(dir / (name & ext & srcSuff),
-             dir / (name & ext & ExtSep & $(i+1)))
-
-method log*(logger: RollingFileLogger, level: Level, args: varargs[string, `$`]) =
-  ## Logs to a file using rolling ``logger`` only.
-  if level >= logging.level and level >= logger.levelThreshold:
-    if logger.curLine >= logger.maxLines:
-      logger.file.close()
-      rotate(logger)
-      logger.logFiles.inc
-      logger.curLine = 0
-      logger.file = open(logger.baseName, logger.baseMode, bufSize = logger.bufSize)
-
-    writeLine(logger.file, substituteLog(logger.fmtStr, level, args))
-    if level in {lvlError, lvlFatal}: flushFile(logger.file)
-    logger.curLine.inc
+when not defined(js):
+  method log*(logger: FileLogger, level: Level, args: varargs[string, `$`]) =
+    ## Logs to a file using ``logger`` only.
+    if level >= logging.level and level >= logger.levelThreshold:
+      writeLine(logger.file, substituteLog(logger.fmtStr, level, args))
+      if level in {lvlError, lvlFatal}: flushFile(logger.file)
+
+  proc defaultFilename*(): string =
+    ## Returns the default filename for a logger.
+    var (path, name, _) = splitFile(getAppFilename())
+    result = changeFileExt(path / name, "log")
+
+  proc newFileLogger*(filename = defaultFilename(),
+                      mode: FileMode = fmAppend,
+                      levelThreshold = lvlAll,
+                      fmtStr = defaultFmtStr,
+                      bufSize: int = -1): FileLogger =
+    ## Creates a new file logger. This logger logs to a file.
+    ## Use ``bufSize`` as size of the output buffer when writing the file
+    ## (-1: use system defaults, 0: unbuffered, >0: fixed buffer size).
+    new(result)
+    result.levelThreshold = levelThreshold
+    result.file = open(filename, mode, bufSize = bufSize)
+    result.fmtStr = fmtStr
+
+  # ------
+
+  proc countLogLines(logger: RollingFileLogger): int =
+    result = 0
+    for line in logger.file.lines():
+      result.inc()
+
+  proc countFiles(filename: string): int =
+    # Example: file.log.1
+    result = 0
+    let (dir, name, ext) = splitFile(filename)
+    for kind, path in walkDir(dir):
+      if kind == pcFile:
+        let llfn = name & ext & ExtSep
+        if path.extractFilename.startsWith(llfn):
+          let numS = path.extractFilename[llfn.len .. ^1]
+          try:
+            let num = parseInt(numS)
+            if num > result:
+              result = num
+          except ValueError: discard
+
+  proc newRollingFileLogger*(filename = defaultFilename(),
+                            mode: FileMode = fmReadWrite,
+                            levelThreshold = lvlAll,
+                            fmtStr = defaultFmtStr,
+                            maxLines = 1000,
+                            bufSize: int = -1): RollingFileLogger =
+    ## Creates a new rolling file logger. Once a file reaches ``maxLines`` lines
+    ## a new log file will be started and the old will be renamed.
+    ## Use ``bufSize`` as size of the output buffer when writing the file
+    ## (-1: use system defaults, 0: unbuffered, >0: fixed buffer size).
+    new(result)
+    result.levelThreshold = levelThreshold
+    result.fmtStr = fmtStr
+    result.maxLines = maxLines
+    result.bufSize = bufSize
+    result.file = open(filename, mode, bufSize=result.bufSize)
+    result.curLine = 0
+    result.baseName = filename
+    result.baseMode = mode
+
+    result.logFiles = countFiles(filename)
+
+    if mode == fmAppend:
+      # We need to get a line count because we will be appending to the file.
+      result.curLine = countLogLines(result)
+
+  proc rotate(logger: RollingFileLogger) =
+    let (dir, name, ext) = splitFile(logger.baseName)
+    for i in countdown(logger.logFiles, 0):
+      let srcSuff = if i != 0: ExtSep & $i else: ""
+      moveFile(dir / (name & ext & srcSuff),
+              dir / (name & ext & ExtSep & $(i+1)))
+
+  method log*(logger: RollingFileLogger, level: Level, args: varargs[string, `$`]) =
+    ## Logs to a file using rolling ``logger`` only.
+    if level >= logging.level and level >= logger.levelThreshold:
+      if logger.curLine >= logger.maxLines:
+        logger.file.close()
+        rotate(logger)
+        logger.logFiles.inc
+        logger.curLine = 0
+        logger.file = open(logger.baseName, logger.baseMode, bufSize = logger.bufSize)
+
+      writeLine(logger.file, substituteLog(logger.fmtStr, level, args))
+      if level in {lvlError, lvlFatal}: flushFile(logger.file)
+      logger.curLine.inc
 
 # --------
 
@@ -323,10 +336,11 @@ proc getLogFilter*(): Level =
 
 when not defined(testing) and isMainModule:
   var L = newConsoleLogger()
-  var fL = newFileLogger("test.log", fmtStr = verboseFmtStr)
-  var rL = newRollingFileLogger("rolling.log", fmtStr = verboseFmtStr)
+  when not defined(js):
+    var fL = newFileLogger("test.log", fmtStr = verboseFmtStr)
+    var rL = newRollingFileLogger("rolling.log", fmtStr = verboseFmtStr)
+    addHandler(fL)
+    addHandler(rL)
   addHandler(L)
-  addHandler(fL)
-  addHandler(rL)
   for i in 0 .. 25:
     info("hello", i)
diff --git a/lib/pure/marshal.nim b/lib/pure/marshal.nim
index 134581a06..36e6cf52f 100644
--- a/lib/pure/marshal.nim
+++ b/lib/pure/marshal.nim
@@ -31,7 +31,7 @@
 ##
 ## **Note**: The ``to`` and ``$$`` operations are available at compile-time!
 
-import streams, typeinfo, json, intsets, tables
+import streams, typeinfo, json, intsets, tables, unicode
 
 proc ptrToInt(x: pointer): int {.inline.} =
   result = cast[int](x) # don't skip alignment
@@ -92,7 +92,15 @@ proc storeAny(s: Stream, a: Any, stored: var IntSet) =
   of akString:
     var x = getString(a)
     if isNil(x): s.write("null")
-    else: s.write(escapeJson(x))
+    elif x.validateUtf8() == -1: s.write(escapeJson(x))
+    else:
+      s.write("[")
+      var i = 0
+      for c in x:
+        if i > 0: s.write(", ")
+        s.write($ord(c))
+        inc(i)
+      s.write("]")
   of akInt..akInt64, akUInt..akUInt64: s.write($getBiggestInt(a))
   of akFloat..akFloat128: s.write($getBiggestFloat(a))
 
@@ -207,6 +215,18 @@ proc loadAny(p: var JsonParser, a: Any, t: var Table[BiggestInt, pointer]) =
     of jsonString:
       setString(a, p.str)
       next(p)
+    of jsonArrayStart:
+      next(p)
+      var str = ""
+      while p.kind == jsonInt:
+        let code = p.getInt()
+        if code < 0 or code > 255:
+          raiseParseErr(p, "invalid charcode: " & $code)
+        str.add(chr(code))
+        next(p)
+      if p.kind == jsonArrayEnd: next(p)
+      else: raiseParseErr(p, "an array of charcodes expected for string")
+      setString(a, str)
     else: raiseParseErr(p, "string expected")
   of akInt..akInt64, akUInt..akUInt64:
     if p.kind == jsonInt:
diff --git a/lib/pure/net.nim b/lib/pure/net.nim
index bd208761b..d4f239c49 100644
--- a/lib/pure/net.nim
+++ b/lib/pure/net.nim
@@ -106,9 +106,13 @@ when defineSsl:
   {.deprecated: [ESSL: SSLError, TSSLCVerifyMode: SSLCVerifyMode,
     TSSLProtVersion: SSLProtVersion, PSSLContext: SSLContext,
     TSSLAcceptResult: SSLAcceptResult].}
+else:
+  type
+    SslContext* = void # TODO: Workaround #4797.
 
 const
   BufferSize*: int = 4000 ## size of a buffered socket's buffer
+  MaxLineLength* = 1_000_000
 
 type
   SocketImpl* = object ## socket type
@@ -206,7 +210,7 @@ proc newSocket*(fd: SocketHandle, domain: Domain = AF_INET,
     result.currPos = 0
 
   # Set SO_NOSIGPIPE on OS X.
-  when defined(macosx):
+  when defined(macosx) and not defined(nimdoc):
     setSockOptInt(fd, SOL_SOCKET, SO_NOSIGPIPE, 1)
 
 proc newSocket*(domain, sockType, protocol: cint, buffered = true): Socket =
@@ -966,6 +970,22 @@ proc recv*(socket: Socket, data: var string, size: int, timeout = -1,
     socket.socketError(result, lastError = lastError)
   data.setLen(result)
 
+proc recv*(socket: Socket, size: int, timeout = -1,
+           flags = {SocketFlag.SafeDisconn}): string {.inline.} =
+  ## Higher-level version of ``recv`` which returns a string.
+  ##
+  ## When ``""`` is returned the socket's connection has been closed.
+  ##
+  ## This function will throw an EOS exception when an error occurs.
+  ##
+  ## A timeout may be specified in milliseconds, if enough data is not received
+  ## within the time specified an ETimeout exception will be raised.
+  ##
+  ##
+  ## **Warning**: Only the ``SafeDisconn`` flag is currently supported.
+  result = newString(size)
+  discard recv(socket, result, size, timeout, flags)
+
 proc peekChar(socket: Socket, c: var char): int {.tags: [ReadIOEffect].} =
   if socket.isBuffered:
     result = 1
@@ -987,7 +1007,7 @@ proc peekChar(socket: Socket, c: var char): int {.tags: [ReadIOEffect].} =
     result = recv(socket.fd, addr(c), 1, MSG_PEEK)
 
 proc readLine*(socket: Socket, line: var TaintedString, timeout = -1,
-               flags = {SocketFlag.SafeDisconn}) {.
+               flags = {SocketFlag.SafeDisconn}, maxLength = MaxLineLength) {.
   tags: [ReadIOEffect, TimeEffect].} =
   ## Reads a line of data from ``socket``.
   ##
@@ -1002,6 +1022,10 @@ proc readLine*(socket: Socket, line: var TaintedString, timeout = -1,
   ## A timeout can be specified in milliseconds, if data is not received within
   ## the specified time an ETimeout exception will be raised.
   ##
+  ## The ``maxLength`` parameter determines the maximum amount of characters
+  ## that can be read before a ``ValueError`` is raised. This prevents Denial
+  ## of Service (DOS) attacks.
+  ##
   ## **Warning**: Only the ``SafeDisconn`` flag is currently supported.
 
   template addNLIfEmpty() =
@@ -1035,6 +1059,36 @@ proc readLine*(socket: Socket, line: var TaintedString, timeout = -1,
       return
     add(line.string, c)
 
+    # Verify that this isn't a DOS attack: #3847.
+    if line.string.len > maxLength:
+      let msg = "recvLine received more than the specified `maxLength` " &
+                "allowed."
+      raise newException(ValueError, msg)
+
+proc recvLine*(socket: Socket, timeout = -1,
+               flags = {SocketFlag.SafeDisconn},
+               maxLength = MaxLineLength): TaintedString =
+  ## Reads a line of data from ``socket``.
+  ##
+  ## If a full line is read ``\r\L`` is not
+  ## added to the result, however if solely ``\r\L`` is read then the result
+  ## will be set to it.
+  ##
+  ## If the socket is disconnected, the result will be set to ``""``.
+  ##
+  ## An EOS exception will be raised in the case of a socket error.
+  ##
+  ## A timeout can be specified in milliseconds, if data is not received within
+  ## the specified time an ETimeout exception will be raised.
+  ##
+  ## The ``maxLength`` parameter determines the maximum amount of characters
+  ## that can be read before a ``ValueError`` is raised. This prevents Denial
+  ## of Service (DOS) attacks.
+  ##
+  ## **Warning**: Only the ``SafeDisconn`` flag is currently supported.
+  result = ""
+  readLine(socket, result, timeout, flags, maxLength)
+
 proc recvFrom*(socket: Socket, data: var string, length: int,
                address: var string, port: var Port, flags = 0'i32): int {.
                tags: [ReadIOEffect].} =
diff --git a/lib/pure/os.nim b/lib/pure/os.nim
index 1e474f4d4..cdbe170cc 100644
--- a/lib/pure/os.nim
+++ b/lib/pure/os.nim
@@ -580,9 +580,9 @@ proc moveFile*(source, dest: string) {.rtl, extern: "nos$1",
     when useWinUnicode:
       let s = newWideCString(source)
       let d = newWideCString(dest)
-      if moveFileW(s, d, 0'i32) == 0'i32: raiseOSError(osLastError())
+      if moveFileW(s, d) == 0'i32: raiseOSError(osLastError())
     else:
-      if moveFileA(source, dest, 0'i32) == 0'i32: raiseOSError(osLastError())
+      if moveFileA(source, dest) == 0'i32: raiseOSError(osLastError())
   else:
     if c_rename(source, dest) != 0'i32:
       raiseOSError(osLastError(), $strerror(errno))
@@ -595,12 +595,12 @@ when not declared(ENOENT) and not defined(Windows):
 
 when defined(Windows):
   when useWinUnicode:
-    template deleteFile(file: expr): expr {.immediate.} = deleteFileW(file)
-    template setFileAttributes(file, attrs: expr): expr {.immediate.} =
+    template deleteFile(file: untyped): untyped  = deleteFileW(file)
+    template setFileAttributes(file, attrs: untyped): untyped =
       setFileAttributesW(file, attrs)
   else:
-    template deleteFile(file: expr): expr {.immediate.} = deleteFileA(file)
-    template setFileAttributes(file, attrs: expr): expr {.immediate.} =
+    template deleteFile(file: untyped): untyped = deleteFileA(file)
+    template setFileAttributes(file, attrs: untyped): untyped =
       setFileAttributesA(file, attrs)
 
 proc removeFile*(file: string) {.rtl, extern: "nos$1", tags: [WriteDirEffect].} =
@@ -865,6 +865,20 @@ type
 
 {.deprecated: [TPathComponent: PathComponent].}
 
+
+when defined(posix):
+  proc getSymlinkFileKind(path: string): PathComponent =
+    # Helper function.
+    var s: Stat
+    assert(path != "")
+    if stat(path, s) < 0'i32:
+      raiseOSError(osLastError())
+    if S_ISDIR(s.st_mode):
+      result = pcLinkToDir
+    else:
+      result = pcLinkToFile
+
+
 proc staticWalkDir(dir: string; relative: bool): seq[
                   tuple[kind: PathComponent, path: string]] =
   discard
@@ -931,13 +945,15 @@ iterator walkDir*(dir: string; relative=false): tuple[kind: PathComponent, path:
                 if x.d_type == DT_DIR: k = pcDir
                 if x.d_type == DT_LNK:
                   if dirExists(y): k = pcLinkToDir
-                  else: k = succ(k)
+                  else: k = pcLinkToFile
                 yield (k, y)
                 continue
 
             if lstat(y, s) < 0'i32: break
-            if S_ISDIR(s.st_mode): k = pcDir
-            if S_ISLNK(s.st_mode): k = succ(k)
+            if S_ISDIR(s.st_mode):
+              k = pcDir
+            elif S_ISLNK(s.st_mode):
+              k = getSymlinkFileKind(y)
             yield (k, y)
 
 iterator walkDirRec*(dir: string, filter={pcFile, pcDir}): string {.
@@ -1047,7 +1063,7 @@ proc copyDir*(source, dest: string) {.rtl, extern: "nos$1",
 
 proc createSymlink*(src, dest: string) =
   ## Create a symbolic link at `dest` which points to the item specified
-  ## by `src`. On most operating systems, will fail if a lonk
+  ## by `src`. On most operating systems, will fail if a link already exists.
   ##
   ## **Warning**:
   ## Some OS's (such as Microsoft Windows) restrict the creation
@@ -1070,8 +1086,8 @@ proc createHardlink*(src, dest: string) =
   ## Create a hard link at `dest` which points to the item specified
   ## by `src`.
   ##
-  ## **Warning**: Most OS's restrict the creation of hard links to
-  ## root users (administrators) .
+  ## **Warning**: Some OS's restrict the creation of hard links to
+  ## root users (administrators).
   when defined(Windows):
     when useWinUnicode:
       var wSrc = newWideCString(src)
@@ -1502,7 +1518,7 @@ type
     lastWriteTime*: Time # Time file was last modified/written to.
     creationTime*: Time # Time file was created. Not supported on all systems!
 
-template rawToFormalFileInfo(rawInfo, formalInfo): untyped =
+template rawToFormalFileInfo(rawInfo, path, formalInfo): untyped =
   ## Transforms the native file info structure into the one nim uses.
   ## 'rawInfo' is either a 'TBY_HANDLE_FILE_INFORMATION' structure on Windows,
   ## or a 'Stat' structure on posix
@@ -1557,8 +1573,11 @@ template rawToFormalFileInfo(rawInfo, formalInfo): untyped =
     checkAndIncludeMode(S_IXOTH, fpOthersExec)
 
     formalInfo.kind = pcFile
-    if S_ISDIR(rawInfo.st_mode): formalInfo.kind = pcDir
-    if S_ISLNK(rawInfo.st_mode): formalInfo.kind.inc()
+    if S_ISDIR(rawInfo.st_mode):
+      formalInfo.kind = pcDir
+    elif S_ISLNK(rawInfo.st_mode):
+      assert(path != "") # symlinks can't occur for file handles
+      formalInfo.kind = getSymlinkFileKind(path)
 
 proc getFileInfo*(handle: FileHandle): FileInfo =
   ## Retrieves file information for the file object represented by the given
@@ -1574,12 +1593,12 @@ proc getFileInfo*(handle: FileHandle): FileInfo =
     var realHandle = get_osfhandle(handle)
     if getFileInformationByHandle(realHandle, addr rawInfo) == 0:
       raiseOSError(osLastError())
-    rawToFormalFileInfo(rawInfo, result)
+    rawToFormalFileInfo(rawInfo, "", result)
   else:
     var rawInfo: Stat
     if fstat(handle, rawInfo) < 0'i32:
       raiseOSError(osLastError())
-    rawToFormalFileInfo(rawInfo, result)
+    rawToFormalFileInfo(rawInfo, "", result)
 
 proc getFileInfo*(file: File): FileInfo =
   if file.isNil:
@@ -1608,7 +1627,7 @@ proc getFileInfo*(path: string, followSymlink = true): FileInfo =
       raiseOSError(osLastError())
     if getFileInformationByHandle(handle, addr rawInfo) == 0:
       raiseOSError(osLastError())
-    rawToFormalFileInfo(rawInfo, result)
+    rawToFormalFileInfo(rawInfo, path, result)
     discard closeHandle(handle)
   else:
     var rawInfo: Stat
@@ -1618,7 +1637,7 @@ proc getFileInfo*(path: string, followSymlink = true): FileInfo =
     else:
       if lstat(path, rawInfo) < 0'i32:
         raiseOSError(osLastError())
-    rawToFormalFileInfo(rawInfo, result)
+    rawToFormalFileInfo(rawInfo, path, result)
 
 proc isHidden*(path: string): bool =
   ## Determines whether a given path is hidden or not. Returns false if the
diff --git a/lib/pure/osproc.nim b/lib/pure/osproc.nim
index 7378520e3..6c2debb1b 100644
--- a/lib/pure/osproc.nim
+++ b/lib/pure/osproc.nim
@@ -48,7 +48,7 @@ type
       inHandle, outHandle, errHandle: FileHandle
       inStream, outStream, errStream: Stream
       id: Pid
-    exitCode: cint
+    exitStatus: cint
     options: set[ProcessOption]
 
   Process* = ref ProcessObj ## represents an operating system process
@@ -731,7 +731,7 @@ elif not defined(useNimRtl):
       pStdin, pStdout, pStderr: array[0..1, cint]
     new(result)
     result.options = options
-    result.exitCode = -3 # for ``waitForExit``
+    result.exitStatus = -3 # for ``waitForExit``
     if poParentStreams notin options:
       if pipe(pStdin) != 0'i32 or pipe(pStdout) != 0'i32 or
          pipe(pStderr) != 0'i32:
@@ -957,13 +957,10 @@ elif not defined(useNimRtl):
 
   proc running(p: Process): bool =
     var ret : int
-    when not defined(freebsd):
-      ret = waitpid(p.id, p.exitCode, WNOHANG)
-    else:
-      var status : cint = 1
-      ret = waitpid(p.id, status, WNOHANG)
-      if WIFEXITED(status):
-        p.exitCode = status
+    var status : cint = 1
+    ret = waitpid(p.id, status, WNOHANG)
+    if WIFEXITED(status):
+      p.exitStatus = status
     if ret == 0: return true # Can't establish status. Assume running.
     result = ret == int(p.id)
 
@@ -980,11 +977,12 @@ elif not defined(useNimRtl):
     import kqueue, times
 
     proc waitForExit(p: Process, timeout: int = -1): int =
-      if p.exitCode != -3: return p.exitCode
+      if p.exitStatus != -3: return int(p.exitStatus) shr 8
       if timeout == -1:
-        if waitpid(p.id, p.exitCode, 0) < 0:
-          p.exitCode = -3
+        var status : cint = 1
+        if waitpid(p.id, status, 0) < 0:
           raiseOSError(osLastError())
+        p.exitStatus = status
       else:
         var kqFD = kqueue()
         if kqFD == -1:
@@ -1004,6 +1002,7 @@ elif not defined(useNimRtl):
 
         try:
           while true:
+            var status : cint = 1
             var count = kevent(kqFD, addr(kevIn), 1, addr(kevOut), 1,
                                addr(tmspec))
             if count < 0:
@@ -1014,22 +1013,22 @@ elif not defined(useNimRtl):
               # timeout expired, so we trying to kill process
               if posix.kill(p.id, SIGKILL) == -1:
                 raiseOSError(osLastError())
-              if waitpid(p.id, p.exitCode, 0) < 0:
-                p.exitCode = -3
+              if waitpid(p.id, status, 0) < 0:
                 raiseOSError(osLastError())
+              p.exitStatus = status
               break
             else:
               if kevOut.ident == p.id.uint and kevOut.filter == EVFILT_PROC:
-                if waitpid(p.id, p.exitCode, 0) < 0:
-                  p.exitCode = -3
+                if waitpid(p.id, status, 0) < 0:
                   raiseOSError(osLastError())
+                p.exitStatus = status
                 break
               else:
                 raiseOSError(osLastError())
         finally:
           discard posix.close(kqFD)
 
-      result = int(p.exitCode) shr 8
+      result = int(p.exitStatus) shr 8
   else:
     import times
 
@@ -1061,15 +1060,16 @@ elif not defined(useNimRtl):
         s.tv_sec = b.tv_sec
         s.tv_nsec = b.tv_nsec
 
-      #if waitPid(p.id, p.exitCode, 0) == int(p.id):
+      #if waitPid(p.id, p.exitStatus, 0) == int(p.id):
       # ``waitPid`` fails if the process is not running anymore. But then
-      # ``running`` probably set ``p.exitCode`` for us. Since ``p.exitCode`` is
+      # ``running`` probably set ``p.exitStatus`` for us. Since ``p.exitStatus`` is
       # initialized with -3, wrong success exit codes are prevented.
-      if p.exitCode != -3: return p.exitCode
+      if p.exitStatus != -3: return int(p.exitStatus) shr 8
       if timeout == -1:
-        if waitpid(p.id, p.exitCode, 0) < 0:
-          p.exitCode = -3
+        var status : cint = 1
+        if waitpid(p.id, status, 0) < 0:
           raiseOSError(osLastError())
+        p.exitStatus = status
       else:
         var nmask, omask: Sigset
         var sinfo: SigInfo
@@ -1100,9 +1100,10 @@ elif not defined(useNimRtl):
             let res = sigtimedwait(nmask, sinfo, tmspec)
             if res == SIGCHLD:
               if sinfo.si_pid == p.id:
-                if waitpid(p.id, p.exitCode, 0) < 0:
-                  p.exitCode = -3
+                var status : cint = 1
+                if waitpid(p.id, status, 0) < 0:
                   raiseOSError(osLastError())
+                p.exitStatus = status
                 break
               else:
                 # we have SIGCHLD, but not for process we are waiting,
@@ -1122,9 +1123,10 @@ elif not defined(useNimRtl):
                 # timeout expired, so we trying to kill process
                 if posix.kill(p.id, SIGKILL) == -1:
                   raiseOSError(osLastError())
-                if waitpid(p.id, p.exitCode, 0) < 0:
-                  p.exitCode = -3
+                var status : cint = 1
+                if waitpid(p.id, status, 0) < 0:
                   raiseOSError(osLastError())
+                p.exitStatus = status
                 break
               else:
                 raiseOSError(err)
@@ -1136,15 +1138,19 @@ elif not defined(useNimRtl):
             if sigprocmask(SIG_UNBLOCK, nmask, omask) == -1:
               raiseOSError(osLastError())
 
-      result = int(p.exitCode) shr 8
+      result = int(p.exitStatus) shr 8
 
   proc peekExitCode(p: Process): int =
-    if p.exitCode != -3: return p.exitCode
-    var ret = waitpid(p.id, p.exitCode, WNOHANG)
+    var status : cint = 1
+    if p.exitStatus != -3: return int(p.exitStatus) shr 8
+    var ret = waitpid(p.id, status, WNOHANG)
     var b = ret == int(p.id)
     if b: result = -1
-    if not WIFEXITED(p.exitCode): result = -1
-    else: result = p.exitCode.int shr 8
+    if WIFEXITED(status):
+      p.exitStatus = status
+      result = p.exitStatus.int shr 8
+    else:
+      result = -1
 
   proc createStream(stream: var Stream, handle: var FileHandle,
                     fileMode: FileMode) =
diff --git a/lib/pure/rationals.nim b/lib/pure/rationals.nim
index bf134f2ae..c2ba2b1f3 100644
--- a/lib/pure/rationals.nim
+++ b/lib/pure/rationals.nim
@@ -349,4 +349,4 @@ when isMainModule:
   assert toRational(0.98765432) == 12345679 // 12500000
   assert toRational(0.1, 1000000) == 1 // 10
   assert toRational(0.9, 1000000) == 9 // 10
-  assert toRational(PI) == 80143857 // 25510582
+  #assert toRational(PI) == 80143857 // 25510582
diff --git a/lib/pure/securehash.nim b/lib/pure/securehash.nim
index a30fad92a..1f00ce8d3 100644
--- a/lib/pure/securehash.nim
+++ b/lib/pure/securehash.nim
@@ -15,30 +15,6 @@ type
   Sha1Digest = array[0 .. Sha1DigestSize-1, uint8]
   SecureHash* = distinct Sha1Digest
 
-proc sha1(src: string) : Sha1Digest
-
-proc secureHash*(str: string): SecureHash = SecureHash(sha1(str))
-proc secureHashFile*(filename: string): SecureHash = secureHash(readFile(filename))
-proc `$`*(self: SecureHash): string =
-  result = ""
-  for v in Sha1Digest(self):
-    result.add(toHex(int(v), 2))
-
-proc parseSecureHash*(hash: string): SecureHash =
-  for i in 0.. <Sha1DigestSize:
-    Sha1Digest(result)[i] = uint8(parseHexInt(hash[i*2] & hash[i*2 + 1]))
-
-proc `==`*(a, b: SecureHash): bool =
-  # Not a constant-time comparison, but that's acceptable in this context
-  Sha1Digest(a) == Sha1Digest(b)
-
-
-when isMainModule:
-  let hash1 = secureHash("a93tgj0p34jagp9[agjp98ajrhp9aej]")
-  doAssert hash1 == hash1
-  doAssert parseSecureHash($hash1) == hash1
-
-
 # Copyright (c) 2011, Micael Hildenborg
 # All rights reserved.
 #
@@ -90,10 +66,10 @@ proc innerHash(state: var Sha1State, w: var Sha1Buffer) =
 
   var round = 0
 
-  template rot(value, bits: uint32): uint32 {.immediate.} =
+  template rot(value, bits: uint32): uint32 =
     (value shl bits) or (value shr (32 - bits))
 
-  template sha1(fun, val: uint32): stmt =
+  template sha1(fun, val: uint32) =
     let t = rot(a, 5) + fun + e + val + w[round]
     e = d
     d = c
@@ -101,12 +77,12 @@ proc innerHash(state: var Sha1State, w: var Sha1Buffer) =
     b = a
     a = t
 
-  template process(body: stmt): stmt =
+  template process(body: untyped) =
     w[round] = rot(w[round - 3] xor w[round - 8] xor w[round - 14] xor w[round - 16], 1)
     body
     inc(round)
 
-  template wrap(dest, value: expr): stmt {.immediate.} =
+  template wrap(dest, value: untyped) =
     let v = dest + value
     dest = v
 
@@ -136,7 +112,7 @@ proc innerHash(state: var Sha1State, w: var Sha1Buffer) =
   wrap state[3], d
   wrap state[4], e
 
-template computeInternal(src: expr): stmt {.immediate.} =
+template computeInternal(src: untyped) =
   #Initialize state
   var state: Sha1State
   init(state)
@@ -196,3 +172,24 @@ template computeInternal(src: expr): stmt {.immediate.} =
 proc sha1(src: string) : Sha1Digest =
   ## Calculate SHA1 from input string
   computeInternal(src)
+
+proc secureHash*(str: string): SecureHash = SecureHash(sha1(str))
+proc secureHashFile*(filename: string): SecureHash = secureHash(readFile(filename))
+proc `$`*(self: SecureHash): string =
+  result = ""
+  for v in Sha1Digest(self):
+    result.add(toHex(int(v), 2))
+
+proc parseSecureHash*(hash: string): SecureHash =
+  for i in 0.. <Sha1DigestSize:
+    Sha1Digest(result)[i] = uint8(parseHexInt(hash[i*2] & hash[i*2 + 1]))
+
+proc `==`*(a, b: SecureHash): bool =
+  # Not a constant-time comparison, but that's acceptable in this context
+  Sha1Digest(a) == Sha1Digest(b)
+
+
+when isMainModule:
+  let hash1 = secureHash("a93tgj0p34jagp9[agjp98ajrhp9aej]")
+  doAssert hash1 == hash1
+  doAssert parseSecureHash($hash1) == hash1
diff --git a/lib/pure/selectors.nim b/lib/pure/selectors.nim
index 098b78c95..506b2cec0 100644
--- a/lib/pure/selectors.nim
+++ b/lib/pure/selectors.nim
@@ -375,6 +375,11 @@ proc contains*(s: Selector, key: SelectorKey): bool =
   when not defined(nimdoc):
     return key.fd in s and s.fds[key.fd] == key
 
+proc len*(s: Selector): int =
+  ## Retrieves the number of registered file descriptors in this Selector.
+  when not defined(nimdoc):
+    return s.fds.len
+
 {.deprecated: [TEvent: Event, PSelectorKey: SelectorKey,
    TReadyInfo: ReadyInfo, PSelector: Selector].}
 
diff --git a/lib/pure/stats.nim b/lib/pure/stats.nim
index ec4cd182b..2004337df 100644
--- a/lib/pure/stats.nim
+++ b/lib/pure/stats.nim
@@ -334,15 +334,17 @@ when isMainModule:
   doAssert(rs1.sum == 9.5)
   doAssert(rs1.mean() == 2.375)
 
-  var rr: RunningRegress
-  rr.push(@[0.0,1.0,2.8,3.0,4.0], @[0.0,1.0,2.3,3.0,4.0])
-  doAssert(rr.slope() == 0.9695585996955861)
-  doAssert(rr.intercept() == -0.03424657534246611)
-  doAssert(rr.correlation() == 0.9905100362239381)
-  var rr1, rr2: RunningRegress
-  rr1.push(@[0.0,1.0], @[0.0,1.0])
-  rr2.push(@[2.8,3.0,4.0], @[2.3,3.0,4.0])
-  let rr3 = rr1 + rr2
-  doAssert(rr3.correlation() == rr.correlation())
-  doAssert(clean(rr3.slope()) == clean(rr.slope()))
-  doAssert(clean(rr3.intercept()) == clean(rr.intercept()))
+  when not defined(cpu32):
+    # XXX For some reason on 32bit CPUs these results differ
+    var rr: RunningRegress
+    rr.push(@[0.0,1.0,2.8,3.0,4.0], @[0.0,1.0,2.3,3.0,4.0])
+    doAssert(rr.slope() == 0.9695585996955861)
+    doAssert(rr.intercept() == -0.03424657534246611)
+    doAssert(rr.correlation() == 0.9905100362239381)
+    var rr1, rr2: RunningRegress
+    rr1.push(@[0.0,1.0], @[0.0,1.0])
+    rr2.push(@[2.8,3.0,4.0], @[2.3,3.0,4.0])
+    let rr3 = rr1 + rr2
+    doAssert(rr3.correlation() == rr.correlation())
+    doAssert(clean(rr3.slope()) == clean(rr.slope()))
+    doAssert(clean(rr3.intercept()) == clean(rr.intercept()))
diff --git a/lib/pure/strtabs.nim b/lib/pure/strtabs.nim
index 1c761cd92..c5d471dfa 100644
--- a/lib/pure/strtabs.nim
+++ b/lib/pure/strtabs.nim
@@ -13,9 +13,16 @@
 ## for the string table is also provided.
 
 import
-  os, hashes, strutils
+  hashes, strutils
 
-include "system/inclrtl"
+when defined(js):
+  {.pragma: rtlFunc.}
+  {.pragma: deprecatedGetFunc.}
+else:
+  {.pragma: deprecatedGetFunc, deprecatedGet.}
+  {.pragma: rtlFunc, rtl.}
+  import os
+  include "system/inclrtl"
 
 type
   StringTableMode* = enum     ## describes the tables operation mode
@@ -34,7 +41,7 @@ type
 {.deprecated: [TStringTableMode: StringTableMode,
   TStringTable: StringTableObj, PStringTable: StringTableRef].}
 
-proc len*(t: StringTableRef): int {.rtl, extern: "nst$1".} =
+proc len*(t: StringTableRef): int {.rtlFunc, extern: "nst$1".} =
   ## returns the number of keys in `t`.
   result = t.counter
 
@@ -59,7 +66,7 @@ iterator values*(t: StringTableRef): string =
 type
   FormatFlag* = enum          ## flags for the `%` operator
     useEnvironment,           ## use environment variable if the ``$key``
-                              ## is not found in the table
+                              ## is not found in the table. Does nothing when using `js` target.
     useEmpty,                 ## use the empty string as a default, thus it
                               ## won't throw an exception if ``$key`` is not
                               ## in the table
@@ -111,7 +118,7 @@ template get(t: StringTableRef, key: string): stmt {.immediate.} =
       raise newException(KeyError, "key not found")
 
 proc `[]`*(t: StringTableRef, key: string): var string {.
-           rtl, extern: "nstTake", deprecatedGet.} =
+           rtlFunc, extern: "nstTake", deprecatedGetFunc.} =
   ## retrieves the location at ``t[key]``. If `key` is not in `t`, the
   ## ``KeyError`` exception is raised. One can check with ``hasKey`` whether
   ## the key exists.
@@ -127,7 +134,7 @@ proc getOrDefault*(t: StringTableRef; key: string): string =
   if index >= 0: result = t.data[index].val
   else: result = ""
 
-proc hasKey*(t: StringTableRef, key: string): bool {.rtl, extern: "nst$1".} =
+proc hasKey*(t: StringTableRef, key: string): bool {.rtlFunc, extern: "nst$1".} =
   ## returns true iff `key` is in the table `t`.
   result = rawGet(t, key) >= 0
 
@@ -145,7 +152,7 @@ proc enlarge(t: StringTableRef) =
     if not isNil(t.data[i].key): rawInsert(t, n, t.data[i].key, t.data[i].val)
   swap(t.data, n)
 
-proc `[]=`*(t: StringTableRef, key, val: string) {.rtl, extern: "nstPut".} =
+proc `[]=`*(t: StringTableRef, key, val: string) {.rtlFunc, extern: "nstPut".} =
   ## puts a (key, value)-pair into `t`.
   var index = rawGet(t, key)
   if index >= 0:
@@ -164,14 +171,17 @@ proc raiseFormatException(s: string) =
 proc getValue(t: StringTableRef, flags: set[FormatFlag], key: string): string =
   if hasKey(t, key): return t.getOrDefault(key)
   # hm difficult: assume safety in taint mode here. XXX This is dangerous!
-  if useEnvironment in flags: result = os.getEnv(key).string
-  else: result = ""
+  when defined(js):
+    result = ""
+  else:
+    if useEnvironment in flags: result = os.getEnv(key).string
+    else: result = ""
   if result.len == 0:
     if useKey in flags: result = '$' & key
     elif useEmpty notin flags: raiseFormatException(key)
 
 proc newStringTable*(mode: StringTableMode): StringTableRef {.
-  rtl, extern: "nst$1".} =
+  rtlFunc, extern: "nst$1".} =
   ## creates a new string table that is empty.
   new(result)
   result.mode = mode
@@ -189,7 +199,7 @@ proc clear*(s: StringTableRef, mode: StringTableMode) =
 
 proc newStringTable*(keyValuePairs: varargs[string],
                      mode: StringTableMode): StringTableRef {.
-  rtl, extern: "nst$1WithPairs".} =
+  rtlFunc, extern: "nst$1WithPairs".} =
   ## creates a new string table with given key value pairs.
   ## Example::
   ##   var mytab = newStringTable("key1", "val1", "key2", "val2",
@@ -202,7 +212,7 @@ proc newStringTable*(keyValuePairs: varargs[string],
 
 proc newStringTable*(keyValuePairs: varargs[tuple[key, val: string]],
                      mode: StringTableMode = modeCaseSensitive): StringTableRef {.
-  rtl, extern: "nst$1WithTableConstr".} =
+  rtlFunc, extern: "nst$1WithTableConstr".} =
   ## creates a new string table with given key value pairs.
   ## Example::
   ##   var mytab = newStringTable({"key1": "val1", "key2": "val2"},
@@ -211,7 +221,7 @@ proc newStringTable*(keyValuePairs: varargs[tuple[key, val: string]],
   for key, val in items(keyValuePairs): result[key] = val
 
 proc `%`*(f: string, t: StringTableRef, flags: set[FormatFlag] = {}): string {.
-  rtl, extern: "nstFormat".} =
+  rtlFunc, extern: "nstFormat".} =
   ## The `%` operator for string tables.
   const
     PatternChars = {'a'..'z', 'A'..'Z', '0'..'9', '_', '\x80'..'\xFF'}
@@ -240,7 +250,7 @@ proc `%`*(f: string, t: StringTableRef, flags: set[FormatFlag] = {}): string {.
       add(result, f[i])
       inc(i)
 
-proc `$`*(t: StringTableRef): string {.rtl, extern: "nstDollar".} =
+proc `$`*(t: StringTableRef): string {.rtlFunc, extern: "nstDollar".} =
   ## The `$` operator for string tables.
   if t.len == 0:
     result = "{:}"
diff --git a/lib/pure/terminal.nim b/lib/pure/terminal.nim
index 1f34ec07e..d4734c3e3 100644
--- a/lib/pure/terminal.nim
+++ b/lib/pure/terminal.nim
@@ -60,6 +60,21 @@ when defined(windows):
     lpConsoleScreenBufferInfo: ptr CONSOLE_SCREEN_BUFFER_INFO): WINBOOL{.stdcall,
     dynlib: "kernel32", importc: "GetConsoleScreenBufferInfo".}
 
+  proc terminalWidthIoctl*(handles: openArray[Handle]): int =
+    var csbi: CONSOLE_SCREEN_BUFFER_INFO
+    for h in handles:
+      if getConsoleScreenBufferInfo(h, addr csbi) != 0:
+        return int(csbi.srWindow.Right - csbi.srWindow.Left + 1)
+    return 0
+
+  proc terminalWidth*(): int =
+    var w: int = 0
+    w = terminalWidthIoctl([ getStdHandle(STD_INPUT_HANDLE),
+                             getStdHandle(STD_OUTPUT_HANDLE),
+                             getStdHandle(STD_ERROR_HANDLE) ] )
+    if w > 0: return w
+    return 80
+
   proc setConsoleCursorPosition(hConsoleOutput: HANDLE,
                                 dwCursorPosition: COORD): WINBOOL{.
       stdcall, dynlib: "kernel32", importc: "SetConsoleCursorPosition".}
@@ -123,7 +138,7 @@ when defined(windows):
     if f == stderr: hStderr else: hStdout
 
 else:
-  import termios
+  import termios, posix, os, parseutils
 
   proc setRaw(fd: FileHandle, time: cint = TCSAFLUSH) =
     var mode: Termios
@@ -137,6 +152,33 @@ else:
     mode.c_cc[VTIME] = 0.cuchar
     discard fd.tcsetattr(time, addr mode)
 
+  proc terminalWidthIoctl*(fds: openArray[int]): int =
+    ## Returns terminal width from first fd that supports the ioctl.
+
+    var win: IOctl_WinSize
+    for fd in fds:
+      if ioctl(cint(fd), TIOCGWINSZ, addr win) != -1:
+        return int(win.ws_col)
+    return 0
+
+  var L_ctermid{.importc, header: "<stdio.h>".}: cint
+  proc terminalWidth*(): int =
+    ## Returns some reasonable terminal width from either standard file
+    ## descriptors, controlling terminal, environment variables or tradition.
+
+    var w = terminalWidthIoctl([0, 1, 2])   #Try standard file descriptors
+    if w > 0: return w
+    var cterm = newString(L_ctermid)        #Try controlling tty
+    var fd = open(ctermid(cstring(cterm)), O_RDONLY)
+    if fd != -1:
+      w = terminalWidthIoctl([ int(fd) ])
+    discard close(fd)
+    if w > 0: return w
+    var s = getEnv("COLUMNS")               #Try standard env var
+    if len(s) > 0 and parseInt(string(s), w) > 0 and w > 0:
+      return w
+    return 80                               #Finally default to venerable value
+
 proc setCursorPos*(f: File, x, y: int) =
   ## Sets the terminal's cursor to the (x,y) position.
   ## (0,0) is the upper left of the screen.
diff --git a/lib/pure/times.nim b/lib/pure/times.nim
index d6eb29e1c..b78a2b966 100644
--- a/lib/pure/times.nim
+++ b/lib/pure/times.nim
@@ -1248,8 +1248,11 @@ proc parse*(value, layout: string): TimeInfo =
       else:
         parseToken(info, token, value, j)
         token = ""
-  # Reset weekday as it might not have been provided and the default may be wrong
-  info.weekday = getLocalTime(toTime(info)).weekday
+  # Reset weekday (might not have been provided and the default may be wrong)
+  # and yearday (is never provided directly and therefore probably wrong)
+  let processed = getLocalTime(toTime(info))
+  info.weekday = processed.weekday
+  info.yearday = processed.yearday
   return info
 
 # Leap year calculations are adapted from:
diff --git a/lib/pure/unicode.nim b/lib/pure/unicode.nim
index 0cbe8de7a..6ba966816 100644
--- a/lib/pure/unicode.nim
+++ b/lib/pure/unicode.nim
@@ -24,7 +24,7 @@ proc `<=%`*(a, b: Rune): bool = return int(a) <=% int(b)
 proc `<%`*(a, b: Rune): bool = return int(a) <% int(b)
 proc `==`*(a, b: Rune): bool = return int(a) == int(b)
 
-template ones(n: expr): expr = ((1 shl n)-1)
+template ones(n: untyped): untyped = ((1 shl n)-1)
 
 proc runeLen*(s: string): int {.rtl, extern: "nuc$1".} =
   ## Returns the number of Unicode characters of the string ``s``
@@ -49,7 +49,7 @@ proc runeLenAt*(s: string, i: Natural): int =
   elif ord(s[i]) shr 1 == 0b1111110: result = 6
   else: result = 1
 
-template fastRuneAt*(s: string, i: int, result: expr, doInc = true) =
+template fastRuneAt*(s: string, i: int, result: untyped, doInc = true) =
   ## Returns the Unicode character ``s[i]`` in ``result``. If ``doInc == true``
   ## ``i`` is incremented by the number of bytes that have been processed.
   bind ones
@@ -1628,7 +1628,7 @@ proc reversed*(s: string): string =
     blockPos = 0
     r: Rune
 
-  template reverseUntil(pos): stmt =
+  template reverseUntil(pos) =
     var j = pos - 1
     while j > blockPos:
       result[newPos] = s[j]
diff --git a/lib/pure/unittest.nim b/lib/pure/unittest.nim
index 92ddc3e75..0fc2e441e 100644
--- a/lib/pure/unittest.nim
+++ b/lib/pure/unittest.nim
@@ -77,6 +77,15 @@ checkpoints = @[]
 proc shouldRun(testName: string): bool =
   result = true
 
+proc startSuite(name: string) =
+  template rawPrint() = echo("\n[Suite] ", name) 
+  when not defined(ECMAScript):
+    if colorOutput:
+      styledEcho styleBright, fgBlue, "\n[Suite] ", fgWhite, name
+    else: rawPrint()
+  else: rawPrint()
+
+
 template suite*(name, body) {.dirty.} =
   ## Declare a test suite identified by `name` with optional ``setup``
   ## and/or ``teardown`` section.
@@ -103,9 +112,11 @@ template suite*(name, body) {.dirty.} =
   ##
   ## .. code-block::
   ##
-  ##  [OK] 2 + 2 = 4
-  ##  [OK] (2 + -2) != 4
+  ##  [Suite] test suite for addition
+  ##    [OK] 2 + 2 = 4
+  ##    [OK] (2 + -2) != 4
   block:
+    bind startSuite
     template setup(setupBody: untyped) {.dirty.} =
       var testSetupIMPLFlag = true
       template testSetupIMPL: untyped {.dirty.} = setupBody
@@ -114,14 +125,16 @@ template suite*(name, body) {.dirty.} =
       var testTeardownIMPLFlag = true
       template testTeardownIMPL: untyped {.dirty.} = teardownBody
 
+    let testInSuiteImplFlag = true
+    startSuite name
     body
 
-proc testDone(name: string, s: TestStatus) =
+proc testDone(name: string, s: TestStatus, indent: bool) =
   if s == FAILED:
     programResult += 1
-
+  let prefix = if indent: "  " else: ""
   if outputLevel != PRINT_NONE and (outputLevel == PRINT_ALL or s == FAILED):
-    template rawPrint() = echo("[", $s, "] ", name)
+    template rawPrint() = echo(prefix, "[", $s, "] ", name)
     when not defined(ECMAScript):
       if colorOutput and not defined(ECMAScript):
         var color = case s
@@ -129,7 +142,7 @@ proc testDone(name: string, s: TestStatus) =
                     of FAILED: fgRed
                     of SKIPPED: fgYellow
                     else: fgWhite
-        styledEcho styleBright, color, "[", $s, "] ", fgWhite, name
+        styledEcho styleBright, color, prefix, "[", $s, "] ", fgWhite, name
       else:
         rawPrint()
     else:
@@ -168,7 +181,7 @@ template test*(name, body) {.dirty.} =
       fail()
 
     finally:
-      testDone name, testStatusIMPL
+      testDone name, testStatusIMPL, declared(testInSuiteImplFlag)
 
 proc checkpoint*(msg: string) =
   ## Set a checkpoint identified by `msg`. Upon test failure all
@@ -198,8 +211,9 @@ template fail* =
   ##
   ## outputs "Checkpoint A" before quitting.
   bind checkpoints
+  let prefix = if declared(testInSuiteImplFlag): "    " else: ""
   for msg in items(checkpoints):
-    echo msg
+    echo prefix, msg
 
   when not defined(ECMAScript):
     if abortOnError: quit(1)
diff --git a/lib/pure/xmltree.nim b/lib/pure/xmltree.nim
index a9fc8998a..3c6eb14e3 100644
--- a/lib/pure/xmltree.nim
+++ b/lib/pure/xmltree.nim
@@ -226,6 +226,18 @@ proc noWhitespace(n: XmlNode): bool =
 
 proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) =
   ## adds the textual representation of `n` to `result`.
+
+  proc addEscapedAttr(result: var string, s: string) =
+    # `addEscaped` alternative with less escaped characters.
+    # Only to be used for escaping attribute values enclosed in double quotes!
+    for c in items(s):
+      case c
+      of '<': result.add("&lt;")
+      of '>': result.add("&gt;")
+      of '&': result.add("&amp;")
+      of '"': result.add("&quot;")
+      else: result.add(c)
+
   if n == nil: return
   case n.k
   of xnElement:
@@ -236,7 +248,7 @@ proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) =
         result.add(' ')
         result.add(key)
         result.add("=\"")
-        result.addEscaped(val)
+        result.addEscapedAttr(val)
         result.add('"')
     if n.len > 0:
       result.add('>')
@@ -381,6 +393,5 @@ proc findAll*(n: XmlNode, tag: string): seq[XmlNode] =
   findAll(n, tag, result)
 
 when isMainModule:
-  let link = "http://nim-lang.org"
-  assert """<a href="""" & escape(link) & """">Nim rules.</a>""" ==
+  assert """<a href="http://nim-lang.org">Nim rules.</a>""" ==
     $(<>a(href="http://nim-lang.org", newText("Nim rules.")))
diff --git a/lib/stdlib.nimble b/lib/stdlib.nimble
index 4b0066ee8..bd1b78efe 100644
--- a/lib/stdlib.nimble
+++ b/lib/stdlib.nimble
@@ -1,6 +1,6 @@
 [Package]
 name          = "stdlib"
-version       = "0.14.3"
+version       = "0.15.1"
 author        = "Dominik Picheta"
 description   = "Nim's standard library."
 license       = "MIT"
diff --git a/lib/system.nim b/lib/system.nim
index 26feb5ce8..fae111ce2 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -226,6 +226,7 @@ proc high*[T](x: T): T {.magic: "High", noSideEffect.}
   ##  var arr = [1,2,3,4,5,6,7]
   ##  high(arr) #=> 6
   ##  high(2) #=> 9223372036854775807
+  ##  high(int) #=> 9223372036854775807
 
 proc low*[T](x: T): T {.magic: "Low", noSideEffect.}
   ## returns the lowest possible index of an array, a sequence, a string or
@@ -236,6 +237,7 @@ proc low*[T](x: T): T {.magic: "Low", noSideEffect.}
   ##  var arr = [1,2,3,4,5,6,7]
   ##  low(arr) #=> 0
   ##  low(2) #=> -9223372036854775808
+  ##  low(int) #=> -9223372036854775808
 
 type
   range*{.magic: "Range".}[T] ## Generic type to construct range types.
@@ -603,7 +605,7 @@ proc `<`*[T](x: Ordinal[T]): T {.magic: "UnaryLt", noSideEffect.}
   ## unary ``<`` that can be used for nice looking excluding ranges:
   ##
   ## .. code-block:: nim
-  ##   for i in 0 .. <10: echo i
+  ##   for i in 0 .. <10: echo i #=> 0 1 2 3 4 5 6 7 8 9
   ##
   ## Semantically this is the same as ``pred``.
 
@@ -889,8 +891,8 @@ proc `shl` *(x, y: int64): int64 {.magic: "ShlI", noSideEffect.}
   ## computes the `shift left` operation of `x` and `y`.
   ##
   ## .. code-block:: Nim
-  ##  1'i32 shl 4  == 0x0000_0010
-  ##  1'i64 shl 4  == 0x0000_0000_0000_0010
+  ##  1'i32 shl 4 == 0x0000_0010
+  ##  1'i64 shl 4 == 0x0000_0000_0000_0010
 
 proc `and` *(x, y: int): int {.magic: "BitandI", noSideEffect.}
 proc `and` *(x, y: int8): int8 {.magic: "BitandI", noSideEffect.}
@@ -1313,20 +1315,20 @@ when defined(boehmgc):
 
 when taintMode:
   type TaintedString* = distinct string ## a distinct string type that
-                                        ## is `tainted`:idx:. It is an alias for
+                                        ## is `tainted`:idx:, see `taint mode
+                                        ## <manual.html#taint-mode>`_ for
+                                        ## details. It is an alias for
                                         ## ``string`` if the taint mode is not
-                                        ## turned on. Use the ``-d:taintMode``
-                                        ## command line switch to turn the taint
-                                        ## mode on.
+                                        ## turned on.
 
   proc len*(s: TaintedString): int {.borrow.}
 else:
   type TaintedString* = string          ## a distinct string type that
-                                        ## is `tainted`:idx:. It is an alias for
+                                        ## is `tainted`:idx:, see `taint mode
+                                        ## <manual.html#taint-mode>`_ for
+                                        ## details. It is an alias for
                                         ## ``string`` if the taint mode is not
-                                        ## turned on. Use the ``-d:taintMode``
-                                        ## command line switch to turn the taint
-                                        ## mode on.
+                                        ## turned on.
 
 when defined(profiler):
   proc nimProfile() {.compilerProc, noinline.}
@@ -1410,7 +1412,7 @@ proc del*[T](x: var seq[T], i: Natural) {.noSideEffect.} =
   ## This is an O(1) operation.
   ##
   ## .. code-block:: nim
-  ##  var i = @[1,2,3,4,5]
+  ##  var i = @[1, 2, 3, 4, 5]
   ##  i.del(2) #=> @[1, 2, 5, 4]
   let xl = x.len - 1
   shallowCopy(x[i], x[xl])
@@ -1421,7 +1423,7 @@ proc delete*[T](x: var seq[T], i: Natural) {.noSideEffect.} =
   ## This is an O(n) operation.
   ##
   ## .. code-block:: nim
-  ##  var i = @[1,2,3,4,5]
+  ##  var i = @[1, 2, 3, 4, 5]
   ##  i.delete(2) #=> @[1, 2, 4, 5]
   template defaultImpl =
     let xl = x.len
@@ -1440,8 +1442,8 @@ proc insert*[T](x: var seq[T], item: T, i = 0.Natural) {.noSideEffect.} =
   ## inserts `item` into `x` at position `i`.
   ##
   ## .. code-block:: nim
-  ##  var i = @[1,2,3,4,5]
-  ##  i.insert(2,4) #=> @[1, 2, 3, 4, 2, 5]
+  ##  var i = @[1, 2, 3, 4, 5]
+  ##  i.insert(2, 4) #=> @[1, 2, 3, 4, 2, 5]
   template defaultImpl =
     let xl = x.len
     setLen(x, xl+1)
@@ -1465,8 +1467,8 @@ proc repr*[T](x: T): string {.magic: "Repr", noSideEffect.}
   ## debugging tool.
   ##
   ## .. code-block:: nim
-  ##  var s: seq[string] = @["test2","test2"]
-  ##  var i = @[1,2,3,4,5]
+  ##  var s: seq[string] = @["test2", "test2"]
+  ##  var i = @[1, 2, 3, 4, 5]
   ##  repr(s) #=> 0x1055eb050[0x1055ec050"test2", 0x1055ec078"test2"]
   ##  repr(i) #=> 0x1055ed050[1, 2, 3, 4, 5]
 
@@ -1519,7 +1521,7 @@ type # these work for most platforms:
     ## This is the same as the type ``double`` in *C*.
   clongdouble* {.importc: "long double", nodecl.} = BiggestFloat
     ## This is the same as the type ``long double`` in *C*.
-    ## This C type is not supported by Nim's code generator
+    ## This C type is not supported by Nim's code generator.
 
   cuchar* {.importc: "unsigned char", nodecl.} = char
     ## This is the same as the type ``unsigned char`` in *C*.
@@ -1822,18 +1824,15 @@ const
   NimMajor*: int = 0
     ## is the major number of Nim's version.
 
-  NimMinor*: int = 14
+  NimMinor*: int = 15
     ## is the minor number of Nim's version.
 
-  NimPatch*: int = 3
+  NimPatch*: int = 1
     ## is the patch number of Nim's version.
 
   NimVersion*: string = $NimMajor & "." & $NimMinor & "." & $NimPatch
     ## is the version of Nim as a string.
 
-{.deprecated: [TEndian: Endianness, NimrodVersion: NimVersion,
-    NimrodMajor: NimMajor, NimrodMinor: NimMinor, NimrodPatch: NimPatch].}
-
 # GC interface:
 
 when not defined(nimscript) and hasAlloc:
@@ -2654,12 +2653,11 @@ when not defined(JS): #and not defined(nimscript):
 
   when defined(nimscript):
     proc readFile*(filename: string): string {.tags: [ReadIOEffect], benign.}
-      ## Opens a file named `filename` for reading.
-      ##
-      ## Then calls `readAll <#readAll>`_ and closes the file afterwards.
-      ## Returns the string.  Raises an IO exception in case of an error. If
-      ## you need to call this inside a compile time macro you can use
-      ## `staticRead <#staticRead>`_.
+      ## Opens a file named `filename` for reading, calls `readAll
+      ## <#readAll>`_ and closes the file afterwards. Returns the string.
+      ## Raises an IO exception in case of an error. If # you need to call
+      ## this inside a compile time macro you can use `staticRead
+      ## <#staticRead>`_.
 
     proc writeFile*(filename, content: string) {.tags: [WriteIOEffect], benign.}
       ## Opens a file named `filename` for writing. Then writes the
@@ -2733,7 +2731,7 @@ when not defined(JS): #and not defined(nimscript):
     proc setStdIoUnbuffered*() {.tags: [], benign.}
       ## Configures `stdin`, `stdout` and `stderr` to be unbuffered.
 
-    proc close*(f: File) {.tags: [].}
+    proc close*(f: File) {.tags: [], gcsafe.}
       ## Closes the file.
 
     proc endOfFile*(f: File): bool {.tags: [], benign.}
@@ -2795,7 +2793,7 @@ when not defined(JS): #and not defined(nimscript):
 
     proc writeLine*[Ty](f: File, x: varargs[Ty, `$`]) {.inline,
                              tags: [WriteIOEffect], benign.}
-      ## writes the values `x` to `f` and then writes "\n".
+      ## writes the values `x` to `f` and then writes "\\n".
       ## May throw an IO exception.
 
     proc getFileSize*(f: File): int64 {.tags: [ReadIOEffect], benign.}
@@ -2926,14 +2924,14 @@ when not defined(JS): #and not defined(nimscript):
       ## allows you to override the behaviour of your application when CTRL+C
       ## is pressed. Only one such hook is supported.
 
-    proc writeStackTrace*() {.tags: [WriteIOEffect].}
+    proc writeStackTrace*() {.tags: [WriteIOEffect], gcsafe.}
       ## writes the current stack trace to ``stderr``. This is only works
       ## for debug builds.
     when hostOS != "standalone":
-      proc getStackTrace*(): string
+      proc getStackTrace*(): string {.gcsafe.}
         ## gets the current stack trace. This only works for debug builds.
 
-      proc getStackTrace*(e: ref Exception): string
+      proc getStackTrace*(e: ref Exception): string {.gcsafe.}
         ## gets the stack trace associated with `e`, which is the stack that
         ## lead to the ``raise`` statement. This only works for debug builds.
 
diff --git a/lib/system/alloc.nim b/lib/system/alloc.nim
index bed9fd906..745bbbf62 100644
--- a/lib/system/alloc.nim
+++ b/lib/system/alloc.nim
@@ -101,8 +101,8 @@ type
 
 # shared:
 var
-  bottomData: AvlNode
-  bottom: PAvlNode
+  bottomData {.threadvar.}: AvlNode
+  bottom {.threadvar.}: PAvlNode
 
 {.push stack_trace: off.}
 proc initAllocator() =
diff --git a/lib/system/atomics.nim b/lib/system/atomics.nim
index a79dcb152..3a43729dc 100644
--- a/lib/system/atomics.nim
+++ b/lib/system/atomics.nim
@@ -14,6 +14,7 @@ const someGcc = defined(gcc) or defined(llvm_gcc) or defined(clang)
 
 when someGcc and hasThreadSupport:
   type AtomMemModel* = distinct cint
+
   var ATOMIC_RELAXED* {.importc: "__ATOMIC_RELAXED", nodecl.}: AtomMemModel
     ## No barriers or synchronization.
   var ATOMIC_CONSUME* {.importc: "__ATOMIC_CONSUME", nodecl.}: AtomMemModel
@@ -165,7 +166,8 @@ when someGcc and hasThreadSupport:
   template fence*() = atomicThreadFence(ATOMIC_SEQ_CST)
 elif defined(vcc) and hasThreadSupport:
   proc addAndFetch*(p: ptr int, val: int): int {.
-    importc: "NimXadd", nodecl.}
+    importc: "_InterlockedExchangeAdd", header: "<intrin.h>".}
+
   proc fence*() {.importc: "_ReadWriteBarrier", header: "<intrin.h>".}
 
 else:
@@ -176,6 +178,8 @@ else:
 proc atomicInc*(memLoc: var int, x: int = 1): int =
   when someGcc and hasThreadSupport:
     result = atomic_add_fetch(memLoc.addr, x, ATOMIC_RELAXED)
+  elif defined(vcc) and hasThreadSupport:
+    result = addAndFetch(memLoc.addr, x)
   else:
     inc(memLoc, x)
     result = memLoc
@@ -186,17 +190,33 @@ proc atomicDec*(memLoc: var int, x: int = 1): int =
       result = atomic_sub_fetch(memLoc.addr, x, ATOMIC_RELAXED)
     else:
       result = atomic_add_fetch(memLoc.addr, -x, ATOMIC_RELAXED)
+  elif defined(vcc) and hasThreadSupport:
+    result = addAndFetch(memLoc.addr, -x)
   else:
     dec(memLoc, x)
     result = memLoc
 
-when defined(windows) and not someGcc:
-  proc interlockedCompareExchange(p: pointer; exchange, comparand: int): int
-    {.importc: "InterlockedCompareExchange", header: "<windows.h>", cdecl.}
+when defined(vcc):
+  proc interlockedCompareExchange64(p: pointer; exchange, comparand: int64): int64
+    {.importc: "_InterlockedCompareExchange64", header: "<intrin.h>".}
+  proc interlockedCompareExchange32(p: pointer; exchange, comparand: int32): int32
+    {.importc: "_InterlockedCompareExchange", header: "<intrin.h>".}
+  proc interlockedCompareExchange8(p: pointer; exchange, comparand: byte): byte
+    {.importc: "_InterlockedCompareExchange64", header: "<intrin.h>".}
 
   proc cas*[T: bool|int|ptr](p: ptr T; oldValue, newValue: T): bool =
-    interlockedCompareExchange(p, cast[int](newValue), cast[int](oldValue)) != 0
-  # XXX fix for 64 bit build
+    when sizeof(T) == 8:
+      interlockedCompareExchange64(p, cast[int64](newValue), cast[int64](oldValue)) ==
+        cast[int64](oldValue)
+    elif sizeof(T) == 4:
+      interlockedCompareExchange32(p, cast[int32](newValue), cast[int32](oldValue)) ==
+        cast[int32](oldValue)
+    elif sizeof(T) == 1:
+      interlockedCompareExchange8(p, cast[byte](newValue), cast[byte](oldValue)) ==
+        cast[byte](oldValue)
+    else:
+      {.error: "invalid CAS instruction".}
+
 elif defined(tcc) and not defined(windows):
   when defined(amd64):
     {.emit:"""
@@ -237,7 +257,7 @@ static int __tcc_cas(int *ptr, int oldVal, int newVal)
       return 1;
 }
 """.}
-    
+
   proc tcc_cas(p: ptr int; oldValue, newValue: int): bool
     {.importc: "__tcc_cas", nodecl.}
   proc cas*[T: bool|int|ptr](p: ptr T; oldValue, newValue: T): bool =
@@ -249,14 +269,14 @@ else:
   # XXX is this valid for 'int'?
 
 
-when (defined(x86) or defined(amd64)) and someGcc:
+when (defined(x86) or defined(amd64)) and defined(vcc):
+  proc cpuRelax* {.importc: "YieldProcessor", header: "<windows.h>".}
+elif (defined(x86) or defined(amd64)) and someGcc:
   proc cpuRelax* {.inline.} =
     {.emit: """asm volatile("pause" ::: "memory");""".}
 elif someGcc or defined(tcc):
   proc cpuRelax* {.inline.} =
     {.emit: """asm volatile("" ::: "memory");""".}
-elif (defined(x86) or defined(amd64)) and defined(vcc):
-  proc cpuRelax* {.importc: "YieldProcessor", header: "<windows.h>".}
 elif defined(icl):
   proc cpuRelax* {.importc: "_mm_pause", header: "xmmintrin.h".}
 elif false:
diff --git a/lib/system/avltree.nim b/lib/system/avltree.nim
index d5c901542..50faada26 100644
--- a/lib/system/avltree.nim
+++ b/lib/system/avltree.nim
@@ -9,7 +9,7 @@
 
 # not really an AVL tree anymore, but still balanced ...
 
-template isBottom(n: PAvlNode): bool = n == bottom
+template isBottom(n: PAvlNode): bool = n.link[0] == n
 
 proc lowGauge(n: PAvlNode): int =
   var it = n
@@ -52,7 +52,7 @@ proc split(t: var PAvlNode) =
     inc t.level
 
 proc add(a: var MemRegion, t: var PAvlNode, key, upperBound: int) {.benign.} =
-  if t == bottom:
+  if t.isBottom:
     t = allocAvlNode(a, key, upperBound)
   else:
     if key <% t.key:
@@ -65,14 +65,14 @@ proc add(a: var MemRegion, t: var PAvlNode, key, upperBound: int) {.benign.} =
     split(t)
 
 proc del(a: var MemRegion, t: var PAvlNode, x: int) {.benign.} =
-  if t == bottom: return
+  if isBottom(t): return
   a.last = t
   if x <% t.key:
     del(a, t.link[0], x)
   else:
     a.deleted = t
     del(a, t.link[1], x)
-  if t == a.last and a.deleted != bottom and x == a.deleted.key:
+  if t == a.last and not isBottom(a.deleted) and x == a.deleted.key:
     a.deleted.key = t.key
     a.deleted.upperBound = t.upperBound
     a.deleted = bottom
diff --git a/lib/system/channels.nim b/lib/system/channels.nim
index 68c0e32d2..4b8b895a5 100644
--- a/lib/system/channels.nim
+++ b/lib/system/channels.nim
@@ -52,6 +52,7 @@ proc deinitRawChannel(p: pointer) =
 
 proc storeAux(dest, src: pointer, mt: PNimType, t: PRawChannel,
               mode: LoadStoreMode) {.benign.}
+
 proc storeAux(dest, src: pointer, n: ptr TNimNode, t: PRawChannel,
               mode: LoadStoreMode) {.benign.} =
   var
@@ -71,6 +72,9 @@ proc storeAux(dest, src: pointer, n: ptr TNimNode, t: PRawChannel,
 
 proc storeAux(dest, src: pointer, mt: PNimType, t: PRawChannel,
               mode: LoadStoreMode) =
+  template `+!`(p: pointer; x: int): pointer =
+    cast[pointer](cast[int](p) +% x)
+
   var
     d = cast[ByteAddress](dest)
     s = cast[ByteAddress](src)
@@ -93,7 +97,9 @@ proc storeAux(dest, src: pointer, mt: PNimType, t: PRawChannel,
       if s2 == nil:
         unsureAsgnRef(x, s2)
       else:
-        unsureAsgnRef(x, copyString(cast[NimString](s2)))
+        let y = copyDeepString(cast[NimString](s2))
+        #echo "loaded ", cast[int](y), " ", cast[string](y)
+        unsureAsgnRef(x, y)
         dealloc(t.region, s2)
   of tySequence:
     var s2 = cast[PPointer](src)[]
@@ -107,27 +113,27 @@ proc storeAux(dest, src: pointer, mt: PNimType, t: PRawChannel,
     else:
       sysAssert(dest != nil, "dest == nil")
       if mode == mStore:
-        x[] = alloc(t.region, seq.len *% mt.base.size +% GenericSeqSize)
+        x[] = alloc0(t.region, seq.len *% mt.base.size +% GenericSeqSize)
       else:
         unsureAsgnRef(x, newObj(mt, seq.len * mt.base.size + GenericSeqSize))
       var dst = cast[ByteAddress](cast[PPointer](dest)[])
+      var dstseq = cast[PGenericSeq](dst)
+      dstseq.len = seq.len
+      dstseq.reserved = seq.len
       for i in 0..seq.len-1:
         storeAux(
           cast[pointer](dst +% i*% mt.base.size +% GenericSeqSize),
           cast[pointer](cast[ByteAddress](s2) +% i *% mt.base.size +%
                         GenericSeqSize),
           mt.base, t, mode)
-      var dstseq = cast[PGenericSeq](dst)
-      dstseq.len = seq.len
-      dstseq.reserved = seq.len
       if mode != mStore: dealloc(t.region, s2)
   of tyObject:
-    # copy type field:
-    var pint = cast[ptr PNimType](dest)
-    # XXX use dynamic type here!
-    pint[] = mt
     if mt.base != nil:
       storeAux(dest, src, mt.base, t, mode)
+    else:
+      # copy type field:
+      var pint = cast[ptr PNimType](dest)
+      pint[] = cast[ptr PNimType](src)[]
     storeAux(dest, src, mt.node, t, mode)
   of tyTuple:
     storeAux(dest, src, mt.node, t, mode)
@@ -144,16 +150,24 @@ proc storeAux(dest, src: pointer, mt: PNimType, t: PRawChannel,
       else:
         unsureAsgnRef(x, nil)
     else:
+      #let size = if mt.base.kind == tyObject: cast[ptr PNimType](s)[].size
+      #           else: mt.base.size
       if mode == mStore:
-        x[] = alloc(t.region, mt.base.size)
+        let dyntype = when declared(usrToCell): usrToCell(s).typ
+                      else: mt
+        let size = dyntype.base.size
+        # we store the real dynamic 'ref type' at offset 0, so that
+        # no information is lost
+        let a = alloc0(t.region, size+sizeof(pointer))
+        x[] = a
+        cast[PPointer](a)[] = dyntype
+        storeAux(a +! sizeof(pointer), s, dyntype.base, t, mode)
       else:
-        # XXX we should use the dynamic type here too, but that is not stored
-        # in the inbox at all --> use source[]'s object type? but how? we need
-        # a tyRef to the object!
-        var obj = newObj(mt, mt.base.size)
+        let dyntype = cast[ptr PNimType](s)[]
+        var obj = newObj(dyntype, dyntype.base.size)
         unsureAsgnRef(x, obj)
-      storeAux(x[], s, mt.base, t, mode)
-      if mode != mStore: dealloc(t.region, s)
+        storeAux(x[], s +! sizeof(pointer), dyntype.base, t, mode)
+        dealloc(t.region, s)
   else:
     copyMem(dest, src, mt.size) # copy raw bits
 
@@ -196,10 +210,8 @@ template sendImpl(q: expr) {.immediate.} =
   if q.mask == ChannelDeadMask:
     sysFatal(DeadThreadError, "cannot send message; thread died")
   acquireSys(q.lock)
-  var m: TMsg
-  shallowCopy(m, msg)
   var typ = cast[PNimType](getTypeInfo(msg))
-  rawSend(q, addr(m), typ)
+  rawSend(q, unsafeAddr(msg), typ)
   q.elemType = typ
   releaseSys(q.lock)
   signalSysCond(q.cond)
@@ -230,8 +242,10 @@ proc recv*[TMsg](c: var Channel[TMsg]): TMsg =
 
 proc tryRecv*[TMsg](c: var Channel[TMsg]): tuple[dataAvailable: bool,
                                                   msg: TMsg] =
-  ## try to receives a message from the channel `c` if available. Otherwise
-  ## it returns ``(false, default(msg))``.
+  ## Tries to receive a message from the channel `c`, but this can fail
+  ## for all sort of reasons, including contention. If it fails,
+  ## it returns ``(false, default(msg))`` otherwise it
+  ## returns ``(true, msg)``.
   var q = cast[PRawChannel](addr(c))
   if q.mask != ChannelDeadMask:
     if tryAcquireSys(q.lock):
diff --git a/lib/system/deepcopy.nim b/lib/system/deepcopy.nim
index 5445a067c..38cc8cbf3 100644
--- a/lib/system/deepcopy.nim
+++ b/lib/system/deepcopy.nim
@@ -32,12 +32,6 @@ proc genericDeepCopyAux(dest, src: pointer, n: ptr TNimNode) {.benign.} =
       genericDeepCopyAux(dest, src, m)
   of nkNone: sysAssert(false, "genericDeepCopyAux")
 
-proc copyDeepString(src: NimString): NimString {.inline.} =
-  if src != nil:
-    result = rawNewStringNoInit(src.len)
-    result.len = src.len
-    copyMem(addr(result.data), addr(src.data), src.len + 1)
-
 proc genericDeepCopyAux(dest, src: pointer, mt: PNimType) =
   var
     d = cast[ByteAddress](dest)
@@ -70,10 +64,11 @@ proc genericDeepCopyAux(dest, src: pointer, mt: PNimType) =
   of tyObject:
     # we need to copy m_type field for tyObject, as it could be empty for
     # sequence reallocations:
-    var pint = cast[ptr PNimType](dest)
-    pint[] = cast[ptr PNimType](src)[]
     if mt.base != nil:
       genericDeepCopyAux(dest, src, mt.base)
+    else:
+      var pint = cast[ptr PNimType](dest)
+      pint[] = cast[ptr PNimType](src)[]
     genericDeepCopyAux(dest, src, mt.node)
   of tyTuple:
     genericDeepCopyAux(dest, src, mt.node)
@@ -103,16 +98,16 @@ proc genericDeepCopyAux(dest, src: pointer, mt: PNimType) =
         else:
           let realType = x.typ
           let z = newObj(realType, realType.base.size)
-
           unsureAsgnRef(cast[PPointer](dest), z)
           x.typ = cast[PNimType](cast[int](z) or 1)
           genericDeepCopyAux(z, s2, realType.base)
           x.typ = realType
       else:
-        let realType = mt
-        let z = newObj(realType, realType.base.size)
+        let size = if mt.base.kind == tyObject: cast[ptr PNimType](s2)[].size
+                   else: mt.base.size
+        let z = newObj(mt, size)
         unsureAsgnRef(cast[PPointer](dest), z)
-        genericDeepCopyAux(z, s2, realType.base)
+        genericDeepCopyAux(z, s2, mt.base)
   of tyPtr:
     # no cycle check here, but also not really required
     let s2 = cast[PPointer](src)[]
diff --git a/lib/system/dyncalls.nim b/lib/system/dyncalls.nim
index 0a994efac..fa997e982 100644
--- a/lib/system/dyncalls.nim
+++ b/lib/system/dyncalls.nim
@@ -26,6 +26,8 @@ proc nimLoadLibraryError(path: string) =
   stderr.rawWrite("could not load: ")
   stderr.rawWrite(path)
   stderr.rawWrite("\n")
+  when not(defined(nimDebugDlOpen)):
+    stderr.rawWrite("compile with -d:nimDebugDlOpen for more information\n")
   quit(1)
 
 proc procAddrError(name: cstring) {.noinline.} =
@@ -74,7 +76,8 @@ when defined(posix):
     when defined(nimDebugDlOpen):
       let error = dlerror()
       if error != nil:
-        c_fprintf(c_stderr, "%s\n", error)
+        stderr.write(error)
+        stderr.rawWrite("\n")
 
   proc nimGetProcAddr(lib: LibHandle, name: cstring): ProcAddr =
     result = dlsym(lib, name)
diff --git a/lib/system/excpt.nim b/lib/system/excpt.nim
index b89729850..dcf41b67d 100644
--- a/lib/system/excpt.nim
+++ b/lib/system/excpt.nim
@@ -11,7 +11,8 @@
 # use the heap (and nor exceptions) do not include the GC or memory allocator.
 
 var
-  errorMessageWriter*: (proc(msg: string) {.tags: [WriteIOEffect], benign.})
+  errorMessageWriter*: (proc(msg: string) {.tags: [WriteIOEffect], benign,
+                                            nimcall.})
     ## Function that will be called
     ## instead of stdmsg.write when printing stacktrace.
     ## Unstable API.
@@ -26,7 +27,7 @@ else:
   proc writeToStdErr(msg: cstring) =
     discard MessageBoxA(0, msg, nil, 0)
 
-proc showErrorMessage(data: cstring) =
+proc showErrorMessage(data: cstring) {.gcsafe.} =
   if errorMessageWriter != nil:
     errorMessageWriter($data)
   else:
diff --git a/lib/system/gc.nim b/lib/system/gc.nim
index ba6b2fcf9..11897ce80 100644
--- a/lib/system/gc.nim
+++ b/lib/system/gc.nim
@@ -116,6 +116,8 @@ template gcAssert(cond: bool, msg: string) =
       echo "[GCASSERT] ", msg
       GC_disable()
       writeStackTrace()
+      #var x: ptr int
+      #echo x[]
       quit 1
 
 proc addZCT(s: var CellSeq, c: PCell) {.noinline.} =
diff --git a/lib/system/gc2.nim b/lib/system/gc2.nim
index 089c9c915..ce2bfc2ae 100644
--- a/lib/system/gc2.nim
+++ b/lib/system/gc2.nim
@@ -33,6 +33,9 @@ when withRealTime and not declared(getTicks):
 when defined(memProfiler):
   proc nimProfile(requestedSize: int) {.benign.}
 
+when hasThreadSupport:
+  include sharedlist
+
 type
   ObjectSpaceIter = object
     state: range[-1..0]
@@ -96,7 +99,7 @@ type
     stat: GcStat
     additionalRoots: CellSeq # dummy roots for GC_ref/unref
     spaceIter: ObjectSpaceIter
-    dumpHeapFile: File # File that is used for GC_dumpHeap
+    pDumpHeapFile: pointer # File that is used for GC_dumpHeap
     when hasThreadSupport:
       toDispose: SharedList[pointer]
 
@@ -612,6 +615,9 @@ template checkTime {.dirty.} =
 
 # ---------------- dump heap ----------------
 
+template dumpHeapFile(gch: var GcHeap): File =
+  cast[File](gch.pDumpHeapFile)
+
 proc debugGraph(s: PCell) =
   c_fprintf(gch.dumpHeapFile, "child %p\n", s)
 
@@ -625,7 +631,7 @@ proc GC_dumpHeap*(file: File) =
   ## Dumps the GCed heap's content to a file. Can be useful for
   ## debugging. Produces an undocumented text file format that
   ## can be translated into "dot" syntax via the "heapdump2dot" tool.
-  gch.dumpHeapFile = file
+  gch.pDumpHeapFile = file
   var spaceIter: ObjectSpaceIter
   var d = gch.decStack.d
   for i in 0 .. < gch.decStack.len:
@@ -643,7 +649,7 @@ proc GC_dumpHeap*(file: File) =
       writeCell(file, "cell ", c)
       forAllChildren(c, waDebug)
       c_fprintf(file, "end\n")
-  gch.dumpHeapFile = nil
+  gch.pDumpHeapFile = nil
 
 proc GC_dumpHeap() =
   var f: File
diff --git a/lib/system/gc_common.nim b/lib/system/gc_common.nim
index 7a1b88c84..513ede173 100644
--- a/lib/system/gc_common.nim
+++ b/lib/system/gc_common.nim
@@ -120,6 +120,7 @@ when allowForeignThreadGc:
     ## switches are used
     if not localGcInitialized:
       localGcInitialized = true
+      initAllocator()
       var stackTop {.volatile.}: pointer
       setStackBottom(addr(stackTop))
       initGC()
diff --git a/lib/system/jssys.nim b/lib/system/jssys.nim
index 9c8a18bfe..39ce1183b 100644
--- a/lib/system/jssys.nim
+++ b/lib/system/jssys.nim
@@ -7,11 +7,6 @@
 #    distribution, for details about the copyright.
 #
 
-when defined(nodejs):
-  proc alert*(s: cstring) {.importc: "console.log", nodecl.}
-else:
-  proc alert*(s: cstring) {.importc, nodecl.}
-
 proc log*(s: cstring) {.importc: "console.log", varargs, nodecl.}
 
 type
@@ -52,11 +47,30 @@ proc nimCharToStr(x: char): string {.compilerproc.} =
   result = newString(1)
   result[0] = x
 
+proc isNimException(): bool {.asmNoStackFrame.} =
+  when defined(nimphp):
+    asm "return isset(`lastJSError`['m_type']);"
+  else:
+    asm "return `lastJSError`.m_type;"
+
+proc getCurrentException*(): ref Exception =
+  if isNimException(): result = cast[ref Exception](lastJSError)
+
 proc getCurrentExceptionMsg*(): string =
   if lastJSError != nil:
-    return $lastJSError.message
-  else:
-    return ""
+    if isNimException():
+      return cast[Exception](lastJSError).msg
+    else:
+      when not defined(nimphp):
+        var msg: cstring
+        {.emit: """
+        if (`lastJSError`.message !== undefined) {
+          `msg` = `lastJSError`.message;
+        }
+        """.}
+        if not msg.isNil:
+          return $msg
+  return ""
 
 proc auxWriteStackTrace(f: PCallFrame): string =
   type
@@ -91,54 +105,56 @@ proc auxWriteStackTrace(f: PCallFrame): string =
 proc rawWriteStackTrace(): string =
   if framePtr != nil:
     result = "Traceback (most recent call last)\n" & auxWriteStackTrace(framePtr)
-    framePtr = nil
-  elif lastJSError != nil:
-    result = $lastJSError.stack
   else:
     result = "No stack traceback available\n"
 
 proc getStackTrace*(): string = rawWriteStackTrace()
+proc getStackTrace*(e: ref Exception): string = e.trace
 
 proc unhandledException(e: ref Exception) {.
     compilerproc, asmNoStackFrame.} =
-  when NimStackTrace:
-    var buf = rawWriteStackTrace()
+  var buf = ""
+  if e.msg != nil and e.msg[0] != '\0':
+    add(buf, "Error: unhandled exception: ")
+    add(buf, e.msg)
   else:
-    var buf = ""
-    if e.msg != nil and e.msg[0] != '\0':
-      add(buf, "Error: unhandled exception: ")
-      add(buf, e.msg)
-    else:
-      add(buf, "Error: unhandled exception")
-    add(buf, " [")
-    add(buf, e.name)
-    add(buf, "]\n")
-    alert(buf)
+    add(buf, "Error: unhandled exception")
+  add(buf, " [")
+  add(buf, e.name)
+  add(buf, "]\n")
+  when NimStackTrace:
+    add(buf, rawWriteStackTrace())
+  let cbuf : cstring = buf
+  framePtr = nil
+  {.emit: """
+  if (typeof(Error) !== "undefined") {
+    throw new Error(`cbuf`);
+  }
+  else {
+    throw `cbuf`;
+  }
+  """.}
 
 proc raiseException(e: ref Exception, ename: cstring) {.
     compilerproc, asmNoStackFrame.} =
   e.name = ename
-  when not defined(noUnhandledHandler):
-    if excHandler == 0:
-      unhandledException(e)
+  if excHandler == 0:
+    unhandledException(e)
   when defined(nimphp):
     asm """throw new Exception($`e`["message"]);"""
   else:
+    when NimStackTrace:
+      e.trace = rawWriteStackTrace()
     asm "throw `e`;"
 
 proc reraiseException() {.compilerproc, asmNoStackFrame.} =
   if lastJSError == nil:
     raise newException(ReraiseError, "no exception to reraise")
   else:
-    when not defined(noUnhandledHandler):
-      if excHandler == 0:
-        var isNimException: bool
-        when defined(nimphp):
-          asm "`isNimException` = isset(`lastJSError`['m_type']);"
-        else:
-          asm "`isNimException` = lastJSError.m_type;"
-        if isNimException:
-          unhandledException(cast[ref Exception](lastJSError))
+    if excHandler == 0:
+      if isNimException():
+        unhandledException(cast[ref Exception](lastJSError))
+
     asm "throw lastJSError;"
 
 proc raiseOverflow {.exportc: "raiseOverflow", noreturn.} =
@@ -873,3 +889,10 @@ proc nimParseBiggestFloat(s: string, number: var BiggestFloat, start = 0): int {
   # evaluate sign
   number = number * sign
   result = i - start
+
+when defined(nodejs):
+  # Deprecated. Use `alert` defined in dom.nim
+  proc alert*(s: cstring) {.importc: "console.log", nodecl, deprecated.}
+else:
+  # Deprecated. Use `alert` defined in dom.nim
+  proc alert*(s: cstring) {.importc, nodecl, deprecated.}
diff --git a/lib/system/mmdisp.nim b/lib/system/mmdisp.nim
index 186349152..63af49e35 100644
--- a/lib/system/mmdisp.nim
+++ b/lib/system/mmdisp.nim
@@ -21,7 +21,7 @@ const
   alwaysGC = defined(fulldebug) # collect after every memory
                                 # allocation (for debugging)
   leakDetector = false
-  overwriteFree = false
+  overwriteFree = defined(nimBurnFree) # overwrite memory with 0xFF before free
   trackAllocationSource = leakDetector
 
   cycleGC = true # (de)activate the cycle GC
diff --git a/lib/system/nimscript.nim b/lib/system/nimscript.nim
index fc6b8c99d..29466c34d 100644
--- a/lib/system/nimscript.nim
+++ b/lib/system/nimscript.nim
@@ -301,7 +301,7 @@ var
   author*: string      ## Nimble support: The package's author.
   description*: string ## Nimble support: The package's description.
   license*: string     ## Nimble support: The package's license.
-  srcdir*: string      ## Nimble support: The package's source directory.
+  srcDir*: string      ## Nimble support: The package's source directory.
   binDir*: string      ## Nimble support: The package's binary directory.
   backend*: string     ## Nimble support: The package's backend.
 
diff --git a/lib/system/osalloc.nim b/lib/system/osalloc.nim
index b07a362a0..316dd74d7 100644
--- a/lib/system/osalloc.nim
+++ b/lib/system/osalloc.nim
@@ -87,8 +87,6 @@ elif defined(posix):
     const MAP_ANONYMOUS = 0x1000
   elif defined(solaris):
     const MAP_ANONYMOUS = 0x100
-  elif defined(linux):
-    const MAP_ANONYMOUS = 0x20
   else:
     var
       MAP_ANONYMOUS {.importc: "MAP_ANONYMOUS", header: "<sys/mman.h>".}: cint
diff --git a/lib/system/sysstr.nim b/lib/system/sysstr.nim
index eb3d276e0..3a93221e0 100644
--- a/lib/system/sysstr.nim
+++ b/lib/system/sysstr.nim
@@ -110,6 +110,11 @@ proc copyStringRC1(src: NimString): NimString {.compilerRtl.} =
     result.len = src.len
     copyMem(addr(result.data), addr(src.data), src.len + 1)
 
+proc copyDeepString(src: NimString): NimString {.inline.} =
+  if src != nil:
+    result = rawNewStringNoInit(src.len)
+    result.len = src.len
+    copyMem(addr(result.data), addr(src.data), src.len + 1)
 
 proc hashString(s: string): int {.compilerproc.} =
   # the compiler needs exactly the same hash function!
@@ -292,7 +297,7 @@ proc nimFloatToStr(f: float): string {.compilerproc.} =
     buf[n+2] = '\0'
   # On Windows nice numbers like '1.#INF', '-1.#INF' or '1.#NAN' are produced.
   # We want to get rid of these here:
-  if buf[n-1] == 'N':
+  if buf[n-1] in {'n', 'N'}:
     result = "nan"
   elif buf[n-1] == 'F':
     if buf[0] == '-':
diff --git a/lib/system/threads.nim b/lib/system/threads.nim
index 583e3ae86..6f5bb38b1 100644
--- a/lib/system/threads.nim
+++ b/lib/system/threads.nim
@@ -331,7 +331,9 @@ else:
     when TArg is void:
       thrd.dataFn()
     else:
-      thrd.dataFn(thrd.data)
+      var x: TArg
+      deepCopy(x, thrd.data)
+      thrd.dataFn(x)
 
 proc threadProcWrapStackFrame[TArg](thrd: ptr Thread[TArg]) =
   when defined(boehmgc):
@@ -354,6 +356,8 @@ proc threadProcWrapStackFrame[TArg](thrd: ptr Thread[TArg]) =
 
 template threadProcWrapperBody(closure: expr) {.immediate.} =
   when declared(globalsSlot): threadVarSetValue(globalsSlot, closure)
+  when declared(initAllocator):
+    initAllocator()
   var thrd = cast[ptr Thread[TArg]](closure)
   threadProcWrapStackFrame(thrd)
   # Since an unhandled exception terminates the whole process (!), there is
@@ -419,7 +423,7 @@ when false:
 
 when hostOS == "windows":
   proc createThread*[TArg](t: var Thread[TArg],
-                           tp: proc (arg: TArg) {.thread.},
+                           tp: proc (arg: TArg) {.thread, nimcall.},
                            param: TArg) =
     ## creates a new thread `t` and starts its execution. Entry point is the
     ## proc `tp`. `param` is passed to `tp`. `TArg` can be ``void`` if you
@@ -441,7 +445,7 @@ when hostOS == "windows":
 
 else:
   proc createThread*[TArg](t: var Thread[TArg],
-                           tp: proc (arg: TArg) {.thread.},
+                           tp: proc (arg: TArg) {.thread, nimcall.},
                            param: TArg) =
     ## creates a new thread `t` and starts its execution. Entry point is the
     ## proc `tp`. `param` is passed to `tp`. `TArg` can be ``void`` if you
@@ -464,7 +468,7 @@ else:
     cpusetIncl(cpu.cint, s)
     setAffinity(t.sys, sizeof(s), s)
 
-proc createThread*(t: var Thread[void], tp: proc () {.thread.}) =
+proc createThread*(t: var Thread[void], tp: proc () {.thread, nimcall.}) =
   createThread[void](t, tp)
 
 proc threadId*[TArg](t: var Thread[TArg]): ThreadId[TArg] {.inline.} =
diff --git a/lib/upcoming/asyncdispatch.nim b/lib/upcoming/asyncdispatch.nim
index 19c9815d2..29b955c46 100644
--- a/lib/upcoming/asyncdispatch.nim
+++ b/lib/upcoming/asyncdispatch.nim
@@ -9,7 +9,7 @@
 
 include "system/inclrtl"
 
-import os, oids, tables, strutils, macros, times, heapqueue
+import os, oids, tables, strutils, times, heapqueue
 
 import nativesockets, net, queues
 
@@ -130,275 +130,7 @@ export Port, SocketFlag
 
 # TODO: Check if yielded future is nil and throw a more meaningful exception
 
-# -- Futures
-
-type
-  FutureBase* = ref object of RootObj ## Untyped future.
-    cb: proc () {.closure,gcsafe.}
-    finished: bool
-    error*: ref Exception ## Stored exception
-    errorStackTrace*: string
-    when not defined(release):
-      stackTrace: string ## For debugging purposes only.
-      id: int
-      fromProc: string
-
-  Future*[T] = ref object of FutureBase ## Typed future.
-    value: T ## Stored value
-
-  FutureVar*[T] = distinct Future[T]
-
-  FutureError* = object of Exception
-    cause*: FutureBase
-
-{.deprecated: [PFutureBase: FutureBase, PFuture: Future].}
-
-when not defined(release):
-  var currentID = 0
-
-proc callSoon*(cbproc: proc ()) {.gcsafe.}
-
-proc newFuture*[T](fromProc: string = "unspecified"): Future[T] =
-  ## Creates a new future.
-  ##
-  ## Specifying ``fromProc``, which is a string specifying the name of the proc
-  ## that this future belongs to, is a good habit as it helps with debugging.
-  new(result)
-  result.finished = false
-  when not defined(release):
-    result.stackTrace = getStackTrace()
-    result.id = currentID
-    result.fromProc = fromProc
-    currentID.inc()
-
-proc newFutureVar*[T](fromProc = "unspecified"): FutureVar[T] =
-  ## Create a new ``FutureVar``. This Future type is ideally suited for
-  ## situations where you want to avoid unnecessary allocations of Futures.
-  ##
-  ## Specifying ``fromProc``, which is a string specifying the name of the proc
-  ## that this future belongs to, is a good habit as it helps with debugging.
-  result = FutureVar[T](newFuture[T](fromProc))
-
-proc clean*[T](future: FutureVar[T]) =
-  ## Resets the ``finished`` status of ``future``.
-  Future[T](future).finished = false
-  Future[T](future).error = nil
-
-proc checkFinished[T](future: Future[T]) =
-  ## Checks whether `future` is finished. If it is then raises a
-  ## ``FutureError``.
-  when not defined(release):
-    if future.finished:
-      var msg = ""
-      msg.add("An attempt was made to complete a Future more than once. ")
-      msg.add("Details:")
-      msg.add("\n  Future ID: " & $future.id)
-      msg.add("\n  Created in proc: " & future.fromProc)
-      msg.add("\n  Stack trace to moment of creation:")
-      msg.add("\n" & indent(future.stackTrace.strip(), 4))
-      when T is string:
-        msg.add("\n  Contents (string): ")
-        msg.add("\n" & indent(future.value.repr, 4))
-      msg.add("\n  Stack trace to moment of secondary completion:")
-      msg.add("\n" & indent(getStackTrace().strip(), 4))
-      var err = newException(FutureError, msg)
-      err.cause = future
-      raise err
-
-proc complete*[T](future: Future[T], val: T) =
-  ## Completes ``future`` with value ``val``.
-  #assert(not future.finished, "Future already finished, cannot finish twice.")
-  checkFinished(future)
-  assert(future.error == nil)
-  future.value = val
-  future.finished = true
-  if future.cb != nil:
-    future.cb()
-
-proc complete*(future: Future[void]) =
-  ## Completes a void ``future``.
-  #assert(not future.finished, "Future already finished, cannot finish twice.")
-  checkFinished(future)
-  assert(future.error == nil)
-  future.finished = true
-  if future.cb != nil:
-    future.cb()
-
-proc complete*[T](future: FutureVar[T]) =
-  ## Completes a ``FutureVar``.
-  template fut: expr = Future[T](future)
-  checkFinished(fut)
-  assert(fut.error == nil)
-  fut.finished = true
-  if fut.cb != nil:
-    fut.cb()
-
-proc fail*[T](future: Future[T], error: ref Exception) =
-  ## Completes ``future`` with ``error``.
-  #assert(not future.finished, "Future already finished, cannot finish twice.")
-  checkFinished(future)
-  future.finished = true
-  future.error = error
-  future.errorStackTrace =
-    if getStackTrace(error) == "": getStackTrace() else: getStackTrace(error)
-  if future.cb != nil:
-    future.cb()
-  else:
-    # This is to prevent exceptions from being silently ignored when a future
-    # is discarded.
-    # TODO: This may turn out to be a bad idea.
-    # Turns out this is a bad idea.
-    #raise error
-    discard
-
-proc `callback=`*(future: FutureBase, cb: proc () {.closure,gcsafe.}) =
-  ## Sets the callback proc to be called when the future completes.
-  ##
-  ## If future has already completed then ``cb`` will be called immediately.
-  ##
-  ## **Note**: You most likely want the other ``callback`` setter which
-  ## passes ``future`` as a param to the callback.
-  future.cb = cb
-  if future.finished:
-    callSoon(future.cb)
-
-proc `callback=`*[T](future: Future[T],
-    cb: proc (future: Future[T]) {.closure,gcsafe.}) =
-  ## Sets the callback proc to be called when the future completes.
-  ##
-  ## If future has already completed then ``cb`` will be called immediately.
-  future.callback = proc () = cb(future)
-
-proc injectStacktrace[T](future: Future[T]) =
-  # TODO: Come up with something better.
-  when not defined(release):
-    var msg = ""
-    msg.add("\n  " & future.fromProc & "'s lead up to read of failed Future:")
-
-    if not future.errorStackTrace.isNil and future.errorStackTrace != "":
-      msg.add("\n" & indent(future.errorStackTrace.strip(), 4))
-    else:
-      msg.add("\n    Empty or nil stack trace.")
-    future.error.msg.add(msg)
-
-proc read*[T](future: Future[T]): T =
-  ## Retrieves the value of ``future``. Future must be finished otherwise
-  ## this function will fail with a ``ValueError`` exception.
-  ##
-  ## If the result of the future is an error then that error will be raised.
-  if future.finished:
-    if future.error != nil:
-      injectStacktrace(future)
-      raise future.error
-    when T isnot void:
-      return future.value
-  else:
-    # TODO: Make a custom exception type for this?
-    raise newException(ValueError, "Future still in progress.")
-
-proc readError*[T](future: Future[T]): ref Exception =
-  ## Retrieves the exception stored in ``future``.
-  ##
-  ## An ``ValueError`` exception will be thrown if no exception exists
-  ## in the specified Future.
-  if future.error != nil: return future.error
-  else:
-    raise newException(ValueError, "No error in future.")
-
-proc mget*[T](future: FutureVar[T]): var T =
-  ## Returns a mutable value stored in ``future``.
-  ##
-  ## Unlike ``read``, this function will not raise an exception if the
-  ## Future has not been finished.
-  result = Future[T](future).value
-
-proc finished*[T](future: Future[T]): bool =
-  ## Determines whether ``future`` has completed.
-  ##
-  ## ``True`` may indicate an error or a value. Use ``failed`` to distinguish.
-  future.finished
-
-proc failed*(future: FutureBase): bool =
-  ## Determines whether ``future`` completed with an error.
-  return future.error != nil
-
-proc asyncCheck*[T](future: Future[T]) =
-  ## Sets a callback on ``future`` which raises an exception if the future
-  ## finished with an error.
-  ##
-  ## This should be used instead of ``discard`` to discard void futures.
-  future.callback =
-    proc () =
-      if future.failed:
-        injectStacktrace(future)
-        raise future.error
-
-proc `and`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
-  ## Returns a future which will complete once both ``fut1`` and ``fut2``
-  ## complete.
-  var retFuture = newFuture[void]("asyncdispatch.`and`")
-  fut1.callback =
-    proc () =
-      if fut2.finished: retFuture.complete()
-  fut2.callback =
-    proc () =
-      if fut1.finished: retFuture.complete()
-  return retFuture
-
-proc `or`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
-  ## Returns a future which will complete once either ``fut1`` or ``fut2``
-  ## complete.
-  var retFuture = newFuture[void]("asyncdispatch.`or`")
-  proc cb() =
-    if not retFuture.finished: retFuture.complete()
-  fut1.callback = cb
-  fut2.callback = cb
-  return retFuture
-
-proc all*[T](futs: varargs[Future[T]]): auto =
-  ## Returns a future which will complete once
-  ## all futures in ``futs`` complete.
-  ##
-  ## If the awaited futures are not ``Future[void]``, the returned future
-  ## will hold the values of all awaited futures in a sequence.
-  ##
-  ## If the awaited futures *are* ``Future[void]``,
-  ## this proc returns ``Future[void]``.
-
-  when T is void:
-    var
-      retFuture = newFuture[void]("asyncdispatch.all")
-      completedFutures = 0
-
-    let totalFutures = len(futs)
-
-    for fut in futs:
-      fut.callback = proc(f: Future[T]) =
-        inc(completedFutures)
-
-        if completedFutures == totalFutures:
-          retFuture.complete()
-
-    return retFuture
-
-  else:
-    var
-      retFuture = newFuture[seq[T]]("asyncdispatch.all")
-      retValues = newSeq[T](len(futs))
-      completedFutures = 0
-
-    for i, fut in futs:
-      proc setCallback(i: int) =
-        fut.callback = proc(f: Future[T]) =
-          retValues[i] = f.read()
-          inc(completedFutures)
-
-          if completedFutures == len(retValues):
-            retFuture.complete(retValues)
-
-      setCallback(i)
-
-    return retFuture
+include "../includes/asyncfutures"
 
 type
   PDispatcherBase = ref object of RootRef
@@ -511,43 +243,44 @@ when defined(windows) or defined(nimdoc):
       if at == -1: winlean.INFINITE
       else: at.int32
 
-    var lpNumberOfBytesTransferred: Dword
-    var lpCompletionKey: ULONG_PTR
-    var customOverlapped: PCustomOverlapped
-    let res = getQueuedCompletionStatus(p.ioPort,
-        addr lpNumberOfBytesTransferred, addr lpCompletionKey,
-        cast[ptr POVERLAPPED](addr customOverlapped), llTimeout).bool
-
-    # http://stackoverflow.com/a/12277264/492186
-    # TODO: http://www.serverframework.com/handling-multiple-pending-socket-read-and-write-operations.html
-    if res:
-      # This is useful for ensuring the reliability of the overlapped struct.
-      assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
-
-      customOverlapped.data.cb(customOverlapped.data.fd,
-          lpNumberOfBytesTransferred, OSErrorCode(-1))
-
-      # If cell.data != nil, then system.protect(rawEnv(cb)) was called,
-      # so we need to dispose our `cb` environment, because it is not needed
-      # anymore.
-      if customOverlapped.data.cell.data != nil:
-        system.dispose(customOverlapped.data.cell)
-
-      GC_unref(customOverlapped)
-    else:
-      let errCode = osLastError()
-      if customOverlapped != nil:
+    if p.handles.len != 0:
+      var lpNumberOfBytesTransferred: Dword
+      var lpCompletionKey: ULONG_PTR
+      var customOverlapped: PCustomOverlapped
+      let res = getQueuedCompletionStatus(p.ioPort,
+          addr lpNumberOfBytesTransferred, addr lpCompletionKey,
+          cast[ptr POVERLAPPED](addr customOverlapped), llTimeout).bool
+
+      # http://stackoverflow.com/a/12277264/492186
+      # TODO: http://www.serverframework.com/handling-multiple-pending-socket-read-and-write-operations.html
+      if res:
+        # This is useful for ensuring the reliability of the overlapped struct.
         assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
+
         customOverlapped.data.cb(customOverlapped.data.fd,
-            lpNumberOfBytesTransferred, errCode)
+            lpNumberOfBytesTransferred, OSErrorCode(-1))
+
+        # If cell.data != nil, then system.protect(rawEnv(cb)) was called,
+        # so we need to dispose our `cb` environment, because it is not needed
+        # anymore.
         if customOverlapped.data.cell.data != nil:
           system.dispose(customOverlapped.data.cell)
+
         GC_unref(customOverlapped)
       else:
-        if errCode.int32 == WAIT_TIMEOUT:
-          # Timed out
-          discard
-        else: raiseOSError(errCode)
+        let errCode = osLastError()
+        if customOverlapped != nil:
+          assert customOverlapped.data.fd == lpCompletionKey.AsyncFD
+          customOverlapped.data.cb(customOverlapped.data.fd,
+              lpNumberOfBytesTransferred, errCode)
+          if customOverlapped.data.cell.data != nil:
+            system.dispose(customOverlapped.data.cell)
+          GC_unref(customOverlapped)
+        else:
+          if errCode.int32 == WAIT_TIMEOUT:
+            # Timed out
+            discard
+          else: raiseOSError(errCode)
 
     # Timer processing.
     processTimers(p)
@@ -718,7 +451,7 @@ when defined(windows) or defined(nimdoc):
           retFuture.complete("")
     return retFuture
 
-  proc recvInto*(socket: AsyncFD, buf: cstring, size: int,
+  proc recvInto*(socket: AsyncFD, buf: pointer, size: int,
                 flags = {SocketFlag.SafeDisconn}): Future[int] =
     ## Reads **up to** ``size`` bytes from ``socket`` into ``buf``, which must
     ## at least be of that size. Returned future will complete once all the
@@ -742,7 +475,7 @@ when defined(windows) or defined(nimdoc):
 
     #buf[] = '\0'
     var dataBuf: TWSABuf
-    dataBuf.buf = buf
+    dataBuf.buf = cast[cstring](buf)
     dataBuf.len = size.ULONG
 
     var bytesReceived: Dword
@@ -753,10 +486,7 @@ when defined(windows) or defined(nimdoc):
       proc (fd: AsyncFD, bytesCount: Dword, errcode: OSErrorCode) =
         if not retFuture.finished:
           if errcode == OSErrorCode(-1):
-            if bytesCount == 0 and dataBuf.buf[0] == '\0':
-              retFuture.complete(0)
-            else:
-              retFuture.complete(bytesCount)
+            retFuture.complete(bytesCount)
           else:
             if flags.isDisconnectionError(errcode):
               retFuture.complete(0)
@@ -788,6 +518,51 @@ when defined(windows) or defined(nimdoc):
           retFuture.complete(bytesReceived)
     return retFuture
 
+  proc send*(socket: AsyncFD, buf: pointer, size: int,
+             flags = {SocketFlag.SafeDisconn}): Future[void] =
+    ## Sends ``size`` bytes from ``buf`` to ``socket``. The returned future will complete once all
+    ## data has been sent.
+    ## **WARNING**: Use it with caution. If ``buf`` refers to GC'ed object, you must use GC_ref/GC_unref calls
+    ## to avoid early freeing of the buffer
+    verifyPresence(socket)
+    var retFuture = newFuture[void]("send")
+
+    var dataBuf: TWSABuf
+    dataBuf.buf = cast[cstring](buf)
+    dataBuf.len = size.ULONG
+
+    var bytesReceived, lowFlags: Dword
+    var ol = PCustomOverlapped()
+    GC_ref(ol)
+    ol.data = CompletionData(fd: socket, cb:
+      proc (fd: AsyncFD, bytesCount: Dword, errcode: OSErrorCode) =
+        if not retFuture.finished:
+          if errcode == OSErrorCode(-1):
+            retFuture.complete()
+          else:
+            if flags.isDisconnectionError(errcode):
+              retFuture.complete()
+            else:
+              retFuture.fail(newException(OSError, osErrorMsg(errcode)))
+    )
+
+    let ret = WSASend(socket.SocketHandle, addr dataBuf, 1, addr bytesReceived,
+                      lowFlags, cast[POVERLAPPED](ol), nil)
+    if ret == -1:
+      let err = osLastError()
+      if err.int32 != ERROR_IO_PENDING:
+        GC_unref(ol)
+        if flags.isDisconnectionError(err):
+          retFuture.complete()
+        else:
+          retFuture.fail(newException(OSError, osErrorMsg(err)))
+    else:
+      retFuture.complete()
+      # We don't deallocate ``ol`` here because even though this completed
+      # immediately poll will still be notified about its completion and it will
+      # free ``ol``.
+    return retFuture
+
   proc send*(socket: AsyncFD, data: string,
              flags = {SocketFlag.SafeDisconn}): Future[void] =
     ## Sends ``data`` to ``socket``. The returned future will complete once all
@@ -796,7 +571,9 @@ when defined(windows) or defined(nimdoc):
     var retFuture = newFuture[void]("send")
 
     var dataBuf: TWSABuf
-    dataBuf.buf = data # since this is not used in a callback, this is fine
+    dataBuf.buf = data
+    GC_ref(data) # we need to protect data until send operation is completed
+                 # or failed.
     dataBuf.len = data.len.ULONG
 
     var bytesReceived, lowFlags: Dword
@@ -804,6 +581,7 @@ when defined(windows) or defined(nimdoc):
     GC_ref(ol)
     ol.data = CompletionData(fd: socket, cb:
       proc (fd: AsyncFD, bytesCount: Dword, errcode: OSErrorCode) =
+        GC_unref(data) # if operation completed `data` must be released.
         if not retFuture.finished:
           if errcode == OSErrorCode(-1):
             retFuture.complete()
@@ -820,6 +598,8 @@ when defined(windows) or defined(nimdoc):
       let err = osLastError()
       if err.int32 != ERROR_IO_PENDING:
         GC_unref(ol)
+        GC_unref(data) # if operation failed `data` must be released, because
+                       # completion routine will not be called.
         if flags.isDisconnectionError(err):
           retFuture.complete()
         else:
@@ -952,7 +732,7 @@ when defined(windows) or defined(nimdoc):
     let dwLocalAddressLength = Dword(sizeof (Sockaddr_in) + 16)
     let dwRemoteAddressLength = Dword(sizeof(Sockaddr_in) + 16)
 
-    template completeAccept(): stmt {.immediate, dirty.} =
+    template completeAccept() {.dirty.} =
       var listenSock = socket
       let setoptRet = setsockopt(clientSock, SOL_SOCKET,
           SO_UPDATE_ACCEPT_CONTEXT, addr listenSock,
@@ -972,7 +752,7 @@ when defined(windows) or defined(nimdoc):
          client: clientSock.AsyncFD)
       )
 
-    template failAccept(errcode): stmt =
+    template failAccept(errcode) =
       if flags.isDisconnectionError(errcode):
         var newAcceptFut = acceptAddr(socket, flags)
         newAcceptFut.callback =
@@ -1158,7 +938,7 @@ when defined(windows) or defined(nimdoc):
     ## receiving notifies.
     registerWaitableEvent(FD_WRITE or FD_CONNECT or FD_CLOSE)
 
-  template registerWaitableHandle(p, hEvent, flags, pcd, handleCallback) =
+  template registerWaitableHandle(p, hEvent, flags, pcd, timeout, handleCallback) =
     let handleFD = AsyncFD(hEvent)
     pcd.ioPort = p.ioPort
     pcd.handleFd = handleFD
@@ -1172,10 +952,10 @@ when defined(windows) or defined(nimdoc):
     pcd.ovl = ol
     if not registerWaitForSingleObject(addr(pcd.waitFd), hEvent,
                                     cast[WAITORTIMERCALLBACK](waitableCallback),
-                                       cast[pointer](pcd), INFINITE, flags):
+                                       cast[pointer](pcd), timeout.Dword, flags):
       GC_unref(ol)
       deallocShared(cast[pointer](pcd))
-      discard wsaCloseEvent(hEvent)
+      discard closeHandle(hEvent)
       raiseOSError(osLastError())
     p.handles.incl(handleFD)
 
@@ -1207,7 +987,7 @@ when defined(windows) or defined(nimdoc):
         deallocShared(cast[pointer](pcd))
         p.handles.excl(fd)
 
-    registerWaitableHandle(p, hEvent, flags, pcd, timercb)
+    registerWaitableHandle(p, hEvent, flags, pcd, timeout, timercb)
 
   proc addProcess*(pid: int, cb: Callback) =
     ## Registers callback ``cb`` to be called when process with pid ``pid``
@@ -1231,10 +1011,12 @@ when defined(windows) or defined(nimdoc):
       p.handles.excl(fd)
       discard cb(fd)
 
-    registerWaitableHandle(p, hProcess, flags, pcd, proccb)
+    registerWaitableHandle(p, hProcess, flags, pcd, INFINITE, proccb)
 
   proc newAsyncEvent*(): AsyncEvent =
     ## Creates new ``AsyncEvent`` object.
+    ## New ``AsyncEvent`` object is not automatically registered with
+    ## dispatcher like ``AsyncSocket``.
     var sa = SECURITY_ATTRIBUTES(
       nLength: sizeof(SECURITY_ATTRIBUTES).cint,
       bInheritHandle: 1
@@ -1243,14 +1025,15 @@ when defined(windows) or defined(nimdoc):
     if event == INVALID_HANDLE_VALUE:
       raiseOSError(osLastError())
     result = cast[AsyncEvent](allocShared0(sizeof(AsyncEventImpl)))
+    result.hEvent = event
 
   proc setEvent*(ev: AsyncEvent) =
     ## Set event ``ev`` to signaled state.
     if setEvent(ev.hEvent) == 0:
       raiseOSError(osLastError())
 
-  proc close*(ev: AsyncEvent) =
-    ## Closes event ``ev``.
+  proc unregister*(ev: AsyncEvent) =
+    ## Unregisters event ``ev``.
     if ev.hWaiter != 0:
       let p = getGlobalDispatcher()
       if unregisterWait(ev.hWaiter) == 0:
@@ -1258,7 +1041,12 @@ when defined(windows) or defined(nimdoc):
         if err.int32 != ERROR_IO_PENDING:
           raiseOSError(osLastError())
       p.handles.excl(AsyncFD(ev.hEvent))
+      ev.hWaiter = 0
+    else:
+      raise newException(ValueError, "Event is not registered!")
 
+  proc close*(ev: AsyncEvent) =
+    ## Closes event ``ev``.
     if closeHandle(ev.hEvent) == 0:
       raiseOSError(osLastError())
     deallocShared(cast[pointer](ev))
@@ -1276,15 +1064,12 @@ when defined(windows) or defined(nimdoc):
 
     proc eventcb(fd: AsyncFD, bytesCount: Dword, errcode: OSErrorCode) =
       if cb(fd):
-        if unregisterWait(pcd.waitFd) == 0:
-          let err = osLastError()
-          if err.int32 != ERROR_IO_PENDING:
-            raiseOSError(osLastError())
-        ev.hWaiter = 0
+        # we need this check to avoid exception, if `unregister(event)` was
+        # called in callback.
+        if ev.hWaiter != 0: unregister(ev)
         deallocShared(cast[pointer](pcd))
-        p.handles.excl(fd)
 
-    registerWaitableHandle(p, hEvent, flags, pcd, eventcb)
+    registerWaitableHandle(p, hEvent, flags, pcd, INFINITE, eventcb)
     ev.hWaiter = pcd.waitFd
 
   initAll()
@@ -1314,13 +1099,14 @@ else:
       readCB: Callback
       writeCB: Callback
 
-    AsyncEvent* = SelectEvent
+    AsyncEvent* = distinct SelectEvent
 
     PDispatcher* = ref object of PDispatcherBase
       selector: Selector[AsyncData]
   {.deprecated: [TAsyncFD: AsyncFD, TCallback: Callback].}
 
   proc `==`*(x, y: AsyncFD): bool {.borrow.}
+  proc `==`*(x, y: AsyncEvent): bool {.borrow.}
 
   proc newDispatcher*(): PDispatcher =
     new result
@@ -1363,24 +1149,30 @@ else:
   proc unregister*(fd: AsyncFD) =
     getGlobalDispatcher().selector.unregister(fd.SocketHandle)
 
-  # proc unregister*(ev: AsyncEvent) =
-  #   getGlobalDispatcher().selector.unregister(SelectEvent(ev))
+  proc unregister*(ev: AsyncEvent) =
+    getGlobalDispatcher().selector.unregister(SelectEvent(ev))
 
   proc addRead*(fd: AsyncFD, cb: Callback) =
     let p = getGlobalDispatcher()
+    var newEvents = {Event.Read}
     withData(p.selector, fd.SocketHandle, adata) do:
       adata.readCB = cb
+      if adata.writeCB != nil:
+        newEvents.incl(Event.Write)
     do:
       raise newException(ValueError, "File descriptor not registered.")
-    p.selector.updateHandle(fd.SocketHandle, {Event.Read})
+    p.selector.updateHandle(fd.SocketHandle, newEvents)
 
   proc addWrite*(fd: AsyncFD, cb: Callback) =
     let p = getGlobalDispatcher()
+    var newEvents = {Event.Write}
     withData(p.selector, fd.SocketHandle, adata) do:
       adata.writeCB = cb
+      if adata.readCB != nil:
+        newEvents.incl(Event.Read)
     do:
       raise newException(ValueError, "File descriptor not registered.")
-    p.selector.updateHandle(fd.SocketHandle, {Event.Write})
+    p.selector.updateHandle(fd.SocketHandle, newEvents)
 
   proc poll*(timeout = 500) =
     var keys: array[64, ReadyKey[AsyncData]]
@@ -1398,7 +1190,7 @@ else:
       var count = p.selector.selectInto(p.adjustedTimeout(timeout), keys)
       var i = 0
       while i < count:
-        var update = false
+        var custom = false
         var fd = keys[i].fd.SocketHandle
         let events = keys[i].events
 
@@ -1409,7 +1201,6 @@ else:
             p.selector.withData(fd, adata) do:
               if adata.readCB == cb:
                 adata.readCB = nil
-                update = true
 
         if Event.Write in events:
           let cb = keys[i].data.writeCB
@@ -1418,24 +1209,29 @@ else:
             p.selector.withData(fd, adata) do:
               if adata.writeCB == cb:
                 adata.writeCB = nil
-                update = true
 
         when supportedPlatform:
           if (customSet * events) != {}:
             let cb = keys[i].data.readCB
             doAssert(cb != nil)
+            custom = true
             if cb(fd.AsyncFD):
               p.selector.withData(fd, adata) do:
                 if adata.readCB == cb:
                   adata.readCB = nil
                   p.selector.unregister(fd)
 
-        if update:
+        # because state `data` can be modified in callback we need to update
+        # descriptor events with currently registered callbacks.
+        if not custom:
+          var update = false
           var newEvents: set[Event] = {}
           p.selector.withData(fd, adata) do:
             if adata.readCB != nil: incl(newEvents, Event.Read)
             if adata.writeCB != nil: incl(newEvents, Event.Write)
-          p.selector.updateHandle(fd, newEvents)
+            update = true
+          if update:
+            p.selector.updateHandle(fd, newEvents)
         inc(i)
 
     # Timer processing.
@@ -1517,7 +1313,7 @@ else:
     addRead(socket, cb)
     return retFuture
 
-  proc recvInto*(socket: AsyncFD, buf: cstring, size: int,
+  proc recvInto*(socket: AsyncFD, buf: pointer, size: int,
                  flags = {SocketFlag.SafeDisconn}): Future[int] =
     var retFuture = newFuture[int]("recvInto")
 
@@ -1541,6 +1337,38 @@ else:
     addRead(socket, cb)
     return retFuture
 
+  proc send*(socket: AsyncFD, buf: pointer, size: int,
+             flags = {SocketFlag.SafeDisconn}): Future[void] =
+    var retFuture = newFuture[void]("send")
+
+    var written = 0
+
+    proc cb(sock: AsyncFD): bool =
+      result = true
+      let netSize = size-written
+      var d = cast[cstring](buf)
+      let res = send(sock.SocketHandle, addr d[written], netSize.cint,
+                     MSG_NOSIGNAL)
+      if res < 0:
+        let lastError = osLastError()
+        if lastError.int32 notin {EINTR, EWOULDBLOCK, EAGAIN}:
+          if flags.isDisconnectionError(lastError):
+            retFuture.complete()
+          else:
+            retFuture.fail(newException(OSError, osErrorMsg(lastError)))
+        else:
+          result = false # We still want this callback to be called.
+      else:
+        written.inc(res)
+        if res != netSize:
+          result = false # We still have data to send.
+        else:
+          retFuture.complete()
+    # TODO: The following causes crashes.
+    #if not cb(socket):
+    addWrite(socket, cb)
+    return retFuture
+
   proc send*(socket: AsyncFD, data: string,
              flags = {SocketFlag.SafeDisconn}): Future[void] =
     var retFuture = newFuture[void]("send")
@@ -1682,15 +1510,15 @@ else:
 
   proc newAsyncEvent*(): AsyncEvent =
     ## Creates new ``AsyncEvent``.
-    result = AsyncEvent(ioselectors.newSelectEvent())
+    result = AsyncEvent(newSelectEvent())
 
   proc setEvent*(ev: AsyncEvent) =
     ## Sets new ``AsyncEvent`` to signaled state.
-    ioselectors.setEvent(SelectEvent(ev))
+    setEvent(SelectEvent(ev))
 
   proc close*(ev: AsyncEvent) =
     ## Closes ``AsyncEvent``
-    ioselectors.close(SelectEvent(ev))
+    close(SelectEvent(ev))
 
   proc addEvent*(ev: AsyncEvent, cb: Callback) =
     ## Start watching for event ``ev``, and call callback ``cb``, when
@@ -1742,360 +1570,7 @@ proc accept*(socket: AsyncFD,
   return retFut
 
 # -- Await Macro
-
-proc skipUntilStmtList(node: NimNode): NimNode {.compileTime.} =
-  # Skips a nest of StmtList's.
-  result = node
-  if node[0].kind == nnkStmtList:
-    result = skipUntilStmtList(node[0])
-
-proc skipStmtList(node: NimNode): NimNode {.compileTime.} =
-  result = node
-  if node[0].kind == nnkStmtList:
-    result = node[0]
-
-template createCb(retFutureSym, iteratorNameSym,
-                   name: expr): stmt {.immediate.} =
-  var nameIterVar = iteratorNameSym
-  #{.push stackTrace: off.}
-  proc cb {.closure,gcsafe.} =
-    try:
-      if not nameIterVar.finished:
-        var next = nameIterVar()
-        if next == nil:
-          assert retFutureSym.finished, "Async procedure's (" &
-                 name & ") return Future was not finished."
-        else:
-          next.callback = cb
-    except:
-      if retFutureSym.finished:
-        # Take a look at tasyncexceptions for the bug which this fixes.
-        # That test explains it better than I can here.
-        raise
-      else:
-        retFutureSym.fail(getCurrentException())
-  cb()
-  #{.pop.}
-proc generateExceptionCheck(futSym,
-    tryStmt, rootReceiver, fromNode: NimNode): NimNode {.compileTime.} =
-  if tryStmt.kind == nnkNilLit:
-    result = rootReceiver
-  else:
-    var exceptionChecks: seq[tuple[cond, body: NimNode]] = @[]
-    let errorNode = newDotExpr(futSym, newIdentNode("error"))
-    for i in 1 .. <tryStmt.len:
-      let exceptBranch = tryStmt[i]
-      if exceptBranch[0].kind == nnkStmtList:
-        exceptionChecks.add((newIdentNode("true"), exceptBranch[0]))
-      else:
-        var exceptIdentCount = 0
-        var ifCond: NimNode
-        for i in 0 .. <exceptBranch.len:
-          let child = exceptBranch[i]
-          if child.kind == nnkIdent:
-            let cond = infix(errorNode, "of", child)
-            if exceptIdentCount == 0:
-              ifCond = cond
-            else:
-              ifCond = infix(ifCond, "or", cond)
-          else:
-            break
-          exceptIdentCount.inc
-
-        expectKind(exceptBranch[exceptIdentCount], nnkStmtList)
-        exceptionChecks.add((ifCond, exceptBranch[exceptIdentCount]))
-    # -> -> else: raise futSym.error
-    exceptionChecks.add((newIdentNode("true"),
-        newNimNode(nnkRaiseStmt).add(errorNode)))
-    # Read the future if there is no error.
-    # -> else: futSym.read
-    let elseNode = newNimNode(nnkElse, fromNode)
-    elseNode.add newNimNode(nnkStmtList, fromNode)
-    elseNode[0].add rootReceiver
-
-    let ifBody = newStmtList()
-    ifBody.add newCall(newIdentNode("setCurrentException"), errorNode)
-    ifBody.add newIfStmt(exceptionChecks)
-    ifBody.add newCall(newIdentNode("setCurrentException"), newNilLit())
-
-    result = newIfStmt(
-      (newDotExpr(futSym, newIdentNode("failed")), ifBody)
-    )
-    result.add elseNode
-
-template useVar(result: var NimNode, futureVarNode: NimNode, valueReceiver,
-                rootReceiver: expr, fromNode: NimNode) =
-  ## Params:
-  ##    futureVarNode: The NimNode which is a symbol identifying the Future[T]
-  ##                   variable to yield.
-  ##    fromNode: Used for better debug information (to give context).
-  ##    valueReceiver: The node which defines an expression that retrieves the
-  ##                   future's value.
-  ##
-  ##    rootReceiver: ??? TODO
-  # -> yield future<x>
-  result.add newNimNode(nnkYieldStmt, fromNode).add(futureVarNode)
-  # -> future<x>.read
-  valueReceiver = newDotExpr(futureVarNode, newIdentNode("read"))
-  result.add generateExceptionCheck(futureVarNode, tryStmt, rootReceiver,
-      fromNode)
-
-template createVar(result: var NimNode, futSymName: string,
-                   asyncProc: NimNode,
-                   valueReceiver, rootReceiver: expr,
-                   fromNode: NimNode) =
-  result = newNimNode(nnkStmtList, fromNode)
-  var futSym = genSym(nskVar, "future")
-  result.add newVarStmt(futSym, asyncProc) # -> var future<x> = y
-  useVar(result, futSym, valueReceiver, rootReceiver, fromNode)
-
-proc processBody(node, retFutureSym: NimNode,
-                 subTypeIsVoid: bool,
-                 tryStmt: NimNode): NimNode {.compileTime.} =
-  #echo(node.treeRepr)
-  result = node
-  case node.kind
-  of nnkReturnStmt:
-    result = newNimNode(nnkStmtList, node)
-    if node[0].kind == nnkEmpty:
-      if not subTypeIsVoid:
-        result.add newCall(newIdentNode("complete"), retFutureSym,
-            newIdentNode("result"))
-      else:
-        result.add newCall(newIdentNode("complete"), retFutureSym)
-    else:
-      result.add newCall(newIdentNode("complete"), retFutureSym,
-        node[0].processBody(retFutureSym, subTypeIsVoid, tryStmt))
-
-    result.add newNimNode(nnkReturnStmt, node).add(newNilLit())
-    return # Don't process the children of this return stmt
-  of nnkCommand, nnkCall:
-    if node[0].kind == nnkIdent and node[0].ident == !"await":
-      case node[1].kind
-      of nnkIdent, nnkInfix, nnkDotExpr:
-        # await x
-        # await x or y
-        result = newNimNode(nnkYieldStmt, node).add(node[1]) # -> yield x
-      of nnkCall, nnkCommand:
-        # await foo(p, x)
-        # await foo p, x
-        var futureValue: NimNode
-        result.createVar("future" & $node[1][0].toStrLit, node[1], futureValue,
-                  futureValue, node)
-      else:
-        error("Invalid node kind in 'await', got: " & $node[1].kind)
-    elif node.len > 1 and node[1].kind == nnkCommand and
-         node[1][0].kind == nnkIdent and node[1][0].ident == !"await":
-      # foo await x
-      var newCommand = node
-      result.createVar("future" & $node[0].toStrLit, node[1][1], newCommand[1],
-                newCommand, node)
-
-  of nnkVarSection, nnkLetSection:
-    case node[0][2].kind
-    of nnkCommand:
-      if node[0][2][0].kind == nnkIdent and node[0][2][0].ident == !"await":
-        # var x = await y
-        var newVarSection = node # TODO: Should this use copyNimNode?
-        result.createVar("future" & $node[0][0].ident, node[0][2][1],
-          newVarSection[0][2], newVarSection, node)
-    else: discard
-  of nnkAsgn:
-    case node[1].kind
-    of nnkCommand:
-      if node[1][0].ident == !"await":
-        # x = await y
-        var newAsgn = node
-        result.createVar("future" & $node[0].toStrLit, node[1][1], newAsgn[1], newAsgn, node)
-    else: discard
-  of nnkDiscardStmt:
-    # discard await x
-    if node[0].kind == nnkCommand and node[0][0].kind == nnkIdent and
-          node[0][0].ident == !"await":
-      var newDiscard = node
-      result.createVar("futureDiscard_" & $toStrLit(node[0][1]), node[0][1],
-                newDiscard[0], newDiscard, node)
-  of nnkTryStmt:
-    # try: await x; except: ...
-    result = newNimNode(nnkStmtList, node)
-    template wrapInTry(n, tryBody: expr) =
-      var temp = n
-      n[0] = tryBody
-      tryBody = temp
-
-      # Transform ``except`` body.
-      # TODO: Could we perform some ``await`` transformation here to get it
-      # working in ``except``?
-      tryBody[1] = processBody(n[1], retFutureSym, subTypeIsVoid, nil)
-
-    proc processForTry(n: NimNode, i: var int,
-                       res: NimNode): bool {.compileTime.} =
-      ## Transforms the body of the tryStmt. Does not transform the
-      ## body in ``except``.
-      ## Returns true if the tryStmt node was transformed into an ifStmt.
-      result = false
-      var skipped = n.skipStmtList()
-      while i < skipped.len:
-        var processed = processBody(skipped[i], retFutureSym,
-                                    subTypeIsVoid, n)
-
-        # Check if we transformed the node into an exception check.
-        # This suggests skipped[i] contains ``await``.
-        if processed.kind != skipped[i].kind or processed.len != skipped[i].len:
-          processed = processed.skipUntilStmtList()
-          expectKind(processed, nnkStmtList)
-          expectKind(processed[2][1], nnkElse)
-          i.inc
-
-          if not processForTry(n, i, processed[2][1][0]):
-            # We need to wrap the nnkElse nodes back into a tryStmt.
-            # As they are executed if an exception does not happen
-            # inside the awaited future.
-            # The following code will wrap the nodes inside the
-            # original tryStmt.
-            wrapInTry(n, processed[2][1][0])
-
-          res.add processed
-          result = true
-        else:
-          res.add skipped[i]
-          i.inc
-    var i = 0
-    if not processForTry(node, i, result):
-      # If the tryStmt hasn't been transformed we can just put the body
-      # back into it.
-      wrapInTry(node, result)
-    return
-  else: discard
-
-  for i in 0 .. <result.len:
-    result[i] = processBody(result[i], retFutureSym, subTypeIsVoid, nil)
-
-proc getName(node: NimNode): string {.compileTime.} =
-  case node.kind
-  of nnkPostfix:
-    return $node[1].ident
-  of nnkIdent:
-    return $node.ident
-  of nnkEmpty:
-    return "anonymous"
-  else:
-    error("Unknown name.")
-
-proc asyncSingleProc(prc: NimNode): NimNode {.compileTime.} =
-  ## This macro transforms a single procedure into a closure iterator.
-  ## The ``async`` macro supports a stmtList holding multiple async procedures.
-  if prc.kind notin {nnkProcDef, nnkLambda}:
-      error("Cannot transform this node kind into an async proc." &
-            " Proc definition or lambda node expected.")
-
-  hint("Processing " & prc[0].getName & " as an async proc.")
-
-  let returnType = prc[3][0]
-  var baseType: NimNode
-  # Verify that the return type is a Future[T]
-  if returnType.kind == nnkBracketExpr:
-    let fut = repr(returnType[0])
-    if fut != "Future":
-      error("Expected return type of 'Future' got '" & fut & "'")
-    baseType = returnType[1]
-  elif returnType.kind in nnkCallKinds and $returnType[0] == "[]":
-    let fut = repr(returnType[1])
-    if fut != "Future":
-      error("Expected return type of 'Future' got '" & fut & "'")
-    baseType = returnType[2]
-  elif returnType.kind == nnkEmpty:
-    baseType = returnType
-  else:
-    error("Expected return type of 'Future' got '" & repr(returnType) & "'")
-
-  let subtypeIsVoid = returnType.kind == nnkEmpty or
-        (baseType.kind == nnkIdent and returnType[1].ident == !"void")
-
-  var outerProcBody = newNimNode(nnkStmtList, prc[6])
-
-  # -> var retFuture = newFuture[T]()
-  var retFutureSym = genSym(nskVar, "retFuture")
-  var subRetType =
-    if returnType.kind == nnkEmpty: newIdentNode("void")
-    else: baseType
-  outerProcBody.add(
-    newVarStmt(retFutureSym,
-      newCall(
-        newNimNode(nnkBracketExpr, prc[6]).add(
-          newIdentNode(!"newFuture"), # TODO: Strange bug here? Remove the `!`.
-          subRetType),
-      newLit(prc[0].getName)))) # Get type from return type of this proc
-
-  # -> iterator nameIter(): FutureBase {.closure.} =
-  # ->   {.push warning[resultshadowed]: off.}
-  # ->   var result: T
-  # ->   {.pop.}
-  # ->   <proc_body>
-  # ->   complete(retFuture, result)
-  var iteratorNameSym = genSym(nskIterator, $prc[0].getName & "Iter")
-  var procBody = prc[6].processBody(retFutureSym, subtypeIsVoid, nil)
-  if not subtypeIsVoid:
-    procBody.insert(0, newNimNode(nnkPragma).add(newIdentNode("push"),
-      newNimNode(nnkExprColonExpr).add(newNimNode(nnkBracketExpr).add(
-        newIdentNode("warning"), newIdentNode("resultshadowed")),
-      newIdentNode("off")))) # -> {.push warning[resultshadowed]: off.}
-
-    procBody.insert(1, newNimNode(nnkVarSection, prc[6]).add(
-      newIdentDefs(newIdentNode("result"), baseType))) # -> var result: T
-
-    procBody.insert(2, newNimNode(nnkPragma).add(
-      newIdentNode("pop"))) # -> {.pop.})
-
-    procBody.add(
-      newCall(newIdentNode("complete"),
-        retFutureSym, newIdentNode("result"))) # -> complete(retFuture, result)
-  else:
-    # -> complete(retFuture)
-    procBody.add(newCall(newIdentNode("complete"), retFutureSym))
-
-  var closureIterator = newProc(iteratorNameSym, [newIdentNode("FutureBase")],
-                                procBody, nnkIteratorDef)
-  closureIterator[4] = newNimNode(nnkPragma, prc[6]).add(newIdentNode("closure"))
-  outerProcBody.add(closureIterator)
-
-  # -> createCb(retFuture)
-  #var cbName = newIdentNode("cb")
-  var procCb = newCall(bindSym"createCb", retFutureSym, iteratorNameSym,
-                       newStrLitNode(prc[0].getName))
-  outerProcBody.add procCb
-
-  # -> return retFuture
-  outerProcBody.add newNimNode(nnkReturnStmt, prc[6][prc[6].len-1]).add(retFutureSym)
-
-  result = prc
-
-  # Remove the 'async' pragma.
-  for i in 0 .. <result[4].len:
-    if result[4][i].kind == nnkIdent and result[4][i].ident == !"async":
-      result[4].del(i)
-  result[4] = newEmptyNode()
-  if subtypeIsVoid:
-    # Add discardable pragma.
-    if returnType.kind == nnkEmpty:
-      # Add Future[void]
-      result[3][0] = parseExpr("Future[void]")
-
-  result[6] = outerProcBody
-
-  #echo(treeRepr(result))
-  #if prc[0].getName == "testInfix":
-  #  echo(toStrLit(result))
-
-macro async*(prc: stmt): stmt {.immediate.} =
-  ## Macro which processes async procedures into the appropriate
-  ## iterators and yield statements.
-  if prc.kind == nnkStmtList:
-    for oneProc in prc:
-      result = newStmtList()
-      result.add asyncSingleProc(oneProc)
-  else:
-    result = asyncSingleProc(prc)
+include asyncmacro
 
 proc recvLine*(socket: AsyncFD): Future[string] {.async.} =
   ## Reads a line of data from ``socket``. Returned future will complete once
diff --git a/lib/windows/registry.nim b/lib/windows/registry.nim
new file mode 100644
index 000000000..06f84c881
--- /dev/null
+++ b/lib/windows/registry.nim
@@ -0,0 +1,77 @@
+#
+#
+#            Nim's Runtime Library
+#        (c) Copyright 2016 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## This module is experimental and its interface may change.
+
+import winlean, os
+
+type
+  HKEY* = uint
+
+const
+  HKEY_LOCAL_MACHINE* = HKEY(0x80000002u)
+  HKEY_CURRENT_USER* = HKEY(2147483649)
+
+  RRF_RT_ANY = 0x0000ffff
+  KEY_WOW64_64KEY = 0x0100
+  KEY_WOW64_32KEY = 0x0200
+  KEY_READ = 0x00020019
+  REG_SZ = 1
+
+proc regOpenKeyEx(hKey: HKEY, lpSubKey: WideCString, ulOptions: int32,
+                  samDesired: int32,
+                  phkResult: var HKEY): int32 {.
+  importc: "RegOpenKeyExW", dynlib: "Advapi32.dll", stdcall.}
+
+proc regCloseKey(hkey: HKEY): int32 {.
+  importc: "RegCloseKey", dynlib: "Advapi32.dll", stdcall.}
+
+proc regGetValue(key: HKEY, lpSubKey, lpValue: WideCString;
+                 dwFlags: int32 = RRF_RT_ANY, pdwType: ptr int32,
+                 pvData: pointer,
+                 pcbData: ptr int32): int32 {.
+  importc: "RegGetValueW", dynlib: "Advapi32.dll", stdcall.}
+
+template call(f) =
+  let err = f
+  if err != 0:
+    raiseOSError(err.OSErrorCode, astToStr(f))
+
+proc getUnicodeValue*(path, key: string; handle: HKEY): string =
+  let hh = newWideCString path
+  let kk = newWideCString key
+  var bufsize: int32
+  # try a couple of different flag settings:
+  var flags: int32 = RRF_RT_ANY
+  let err = regGetValue(handle, hh, kk, flags, nil, nil, addr bufsize)
+  if err != 0:
+    var newHandle: HKEY
+    call regOpenKeyEx(handle, hh, 0, KEY_READ or KEY_WOW64_64KEY, newHandle)
+    call regGetValue(newHandle, nil, kk, flags, nil, nil, addr bufsize)
+    var res = newWideCString("", bufsize)
+    call regGetValue(newHandle, nil, kk, flags, nil, cast[pointer](res),
+                   addr bufsize)
+    result = res $ bufsize
+    call regCloseKey(newHandle)
+  else:
+    var res = newWideCString("", bufsize)
+    call regGetValue(handle, hh, kk, flags, nil, cast[pointer](res),
+                   addr bufsize)
+    result = res $ bufsize
+
+proc regSetValue(key: HKEY, lpSubKey, lpValueName: WideCString,
+                 dwType: int32; lpData: WideCString; cbData: int32): int32 {.
+  importc: "RegSetKeyValueW", dynlib: "Advapi32.dll", stdcall.}
+
+proc setUnicodeValue*(path, key, val: string; handle: HKey) =
+  let hh = newWideCString path
+  let kk = newWideCString key
+  let vv = newWideCString val
+  call regSetValue(handle, hh, kk, REG_SZ, vv, (vv.len.int32+1)*2)
+
diff --git a/lib/windows/winlean.nim b/lib/windows/winlean.nim
index b766ead9c..2441c7267 100644
--- a/lib/windows/winlean.nim
+++ b/lib/windows/winlean.nim
@@ -337,11 +337,10 @@ when useWinUnicode:
       stdcall, dynlib: "kernel32", importc: "SetFileAttributesW".}
 
   proc copyFileW*(lpExistingFileName, lpNewFileName: WideCString,
-                 bFailIfExists: cint): cint {.
+                 bFailIfExists: WINBOOL): WINBOOL {.
     importc: "CopyFileW", stdcall, dynlib: "kernel32".}
 
-  proc moveFileW*(lpExistingFileName, lpNewFileName: WideCString,
-                 bFailIfExists: cint): cint {.
+  proc moveFileW*(lpExistingFileName, lpNewFileName: WideCString): WINBOOL {.
     importc: "MoveFileW", stdcall, dynlib: "kernel32".}
 
   proc getEnvironmentStringsW*(): WideCString {.
@@ -368,8 +367,7 @@ else:
                  bFailIfExists: cint): cint {.
     importc: "CopyFileA", stdcall, dynlib: "kernel32".}
 
-  proc moveFileA*(lpExistingFileName, lpNewFileName: cstring,
-                 bFailIfExists: cint): cint {.
+  proc moveFileA*(lpExistingFileName, lpNewFileName: cstring): WINBOOL {.
     importc: "MoveFileA", stdcall, dynlib: "kernel32".}
 
   proc getEnvironmentStringsA*(): cstring {.
@@ -1035,4 +1033,4 @@ when defined(useWinAnsi):
 else:
   proc readConsoleInput*(hConsoleInput: Handle, lpBuffer: pointer, nLength: cint,
                         lpNumberOfEventsRead: ptr cint): cint
-       {.stdcall, dynlib: "kernel32", importc: "ReadConsoleInputW".}
\ No newline at end of file
+       {.stdcall, dynlib: "kernel32", importc: "ReadConsoleInputW".}
diff --git a/lib/wrappers/linenoise/clinenoise.c b/lib/wrappers/linenoise/clinenoise.c
index a03e6f379..c76fc6586 100644
--- a/lib/wrappers/linenoise/clinenoise.c
+++ b/lib/wrappers/linenoise/clinenoise.c
@@ -116,7 +116,9 @@
 #include <sys/types.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
-#include "clinenoise.h"
+#ifndef __LINENOISE_H
+#  include "clinenoise.h"
+#endif
 
 #define LINENOISE_DEFAULT_HISTORY_MAX_LEN 100
 #define LINENOISE_MAX_LINE 4096
diff --git a/lib/wrappers/linenoise/linenoise.nim b/lib/wrappers/linenoise/linenoise.nim
index b7004c6e2..4ac7bf4a8 100644
--- a/lib/wrappers/linenoise/linenoise.nim
+++ b/lib/wrappers/linenoise/linenoise.nim
@@ -14,7 +14,8 @@ type
 
   CompletionCallback* = proc (a2: cstring; a3: ptr Completions) {.cdecl.}
 
-{.compile: "clinenoise.c".}
+{.emit: staticRead"clinenoise.h".}
+{.emit: staticRead"clinenoise.c".}
 
 proc setCompletionCallback*(a2: ptr CompletionCallback) {.
     importc: "linenoiseSetCompletionCallback".}
diff --git a/lib/wrappers/mysql.nim b/lib/wrappers/mysql.nim
index af504864d..6dbed23b3 100644
--- a/lib/wrappers/mysql.nim
+++ b/lib/wrappers/mysql.nim
@@ -13,10 +13,10 @@
 when defined(Unix):
   when defined(macosx):
     const
-      lib = "libmysqlclient.(15|16|17|18).dylib"
+      lib = "libmysqlclient.(15|16|17|18|19|20).dylib"
   else:
     const
-      lib = "libmysqlclient.so.(15|16|17|18)"
+      lib = "libmysqlclient.so.(15|16|17|18|19|20)"
 when defined(Windows):
   const
     lib = "libmysql.dll"
diff --git a/readme.md b/readme.md
index f56b054d6..36d1ab0f9 100644
--- a/readme.md
+++ b/readme.md
@@ -51,6 +51,7 @@ instead of ``build.sh``.
 The ``koch`` tool is the Nim build tool, more ``koch`` related options are
 documented in [doc/koch.rst](doc/koch.rst).
 
+
 ## Nimble
 [Nimble](https://github.com/nim-lang/nimble) is Nim's package manager. For the
 source based installations where you added Nim's ``bin`` directory to your PATH
@@ -60,21 +61,18 @@ the easiest way of installing Nimble is via:
 $ nim e install_nimble.nims
 ```
 
-**Warning:** If you install Nimble this way, you will not be able to use binary
-Nimble packages or update Nimble easily.
-The [Nimble readme](https://github.com/nim-lang/nimble#installation)
-provides thorough instructions on how to install Nimble, so that this isn't a
-problem.
-
 ## Community
 [![Join the Chat at irc.freenode.net#nim](https://img.shields.io/badge/IRC-join_chat_in_%23nim-blue.svg)](https://webchat.freenode.net/?channels=nim)
+[![Join the Gitter channel](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/nim-lang/Nim)
 [![Get help](https://img.shields.io/badge/Forum-get%20help-4eb899.svg)](http://forum.nim-lang.org)
 [![Stackoverflow](https://img.shields.io/badge/stackoverflow-use_%23nim_tag-yellow.svg)](http://stackoverflow.com/questions/tagged/nim?sort=newest&pageSize=15)
 [![Follow @nim_lang!](https://img.shields.io/twitter/follow/nim_lang.svg?style=social)](https://twitter.com/nim_lang)
 
 * The [forum](http://forum.nim-lang.org/) - the best place to ask questions and to discuss Nim.
-* [IRC (Freenode#nim)](https://webchat.freenode.net/?channels=nim) - the best place to discuss
+* [IRC (Freenode#nim)](https://webchat.freenode.net/?channels=nim) - a place to discuss
   Nim in real-time, this is also where most development decision get made!
+* [Gitter](https://gitter.im/nim-lang/Nim) allows to discuss Nim from your browser, one click to join.
+  There is a bridge between Gitter and IRC channels.
 * [Stackoverflow](http://stackoverflow.com/questions/tagged/nim)
 
 ## Contributing
diff --git a/tests/array/troof2.nim b/tests/array/troof2.nim
index d4c1a4982..e4b4f4b3c 100644
--- a/tests/array/troof2.nim
+++ b/tests/array/troof2.nim
@@ -2,8 +2,8 @@ discard """
   errormsg: "invalid context for '^' as 'foo()' has side effects"
   line: "9"
 """
-
-proc foo(): seq[int] =
+# XXX This needs to be fixed properly!
+proc foo(): seq[int] {.sideEffect.} =
   echo "ha"
 
 let f = foo()[^1]
diff --git a/tests/async/config.nims b/tests/async/config.nims
new file mode 100644
index 000000000..97c2e0aa4
--- /dev/null
+++ b/tests/async/config.nims
@@ -0,0 +1,2 @@
+when defined(upcoming):
+  patchFile("stdlib", "asyncdispatch", "$lib/upcoming/asyncdispatch")
diff --git a/tests/async/tasyncdiscard.nim b/tests/async/tasyncdiscard.nim
index e7c87ad42..64e6021c3 100644
--- a/tests/async/tasyncdiscard.nim
+++ b/tests/async/tasyncdiscard.nim
@@ -10,7 +10,7 @@ discard """
 6
 '''
 """
-import asyncio, asyncdispatch, asyncnet
+import asyncdispatch, asyncnet
 
 proc main {.async.} =
   proc f: Future[int] {.async.} =
diff --git a/tests/async/tasynciossl.nim b/tests/async/tasynciossl.nim
deleted file mode 100644
index ba856760e..000000000
--- a/tests/async/tasynciossl.nim
+++ /dev/null
@@ -1,92 +0,0 @@
-discard """
-  file: "tasynciossl.nim"
-  cmd: "nim $target --hints:on --define:ssl $options $file"
-  output: "20000"
-"""
-import sockets, asyncio, strutils, times
-
-var disp {.threadvar.}: PDispatcher
-disp = newDispatcher()
-var msgCount = 0
-
-when defined(ssl):
-  var ctx = newContext(verifyMode = CVerifyNone,
-      certFile = "tests/testdata/mycert.pem", keyFile = "tests/testdata/mycert.pem")
-
-  var ctx1 = newContext(verifyMode = CVerifyNone)
-
-const
-  swarmSize = 50
-  messagesToSend = 100
-
-proc swarmConnect(s: PAsyncSocket) =
-  #echo("Connected")
-  for i in 1..messagesToSend:
-    s.send("Message " & $i & "\c\L")
-  s.close()
-
-proc serverRead(s: PAsyncSocket) =
-  var line = ""
-  assert s.readLine(line)
-  if line != "":
-    #echo(line)
-    if line.startsWith("Message "):
-      msgCount.inc()
-    else:
-      assert(false)
-  else:
-    s.close()
-
-proc serverAccept(s: PAsyncSocket) =
-  var client: PAsyncSocket
-  new(client)
-  s.accept(client)
-  client.handleRead = serverRead
-  disp.register(client)
-
-proc launchSwarm(disp: var PDispatcher, port: TPort, count: int,
-                 buffered = true, useSSL = false) =
-  for i in 1..count:
-    var client = asyncSocket()
-    when defined(ssl):
-      if useSSL:
-        ctx1.wrapSocket(client)
-    client.handleConnect = swarmConnect
-    disp.register(client)
-    client.connect("localhost", port)
-
-proc createSwarm(port: TPort, buffered = true, useSSL = false) =
-  var server = asyncSocket()
-  when defined(ssl):
-    if useSSL:
-      ctx.wrapSocket(server)
-  server.handleAccept = serverAccept
-  disp.register(server)
-  server.bindAddr(port)
-  server.listen()
-  disp.launchSwarm(port, swarmSize, buffered, useSSL)
-
-when defined(ssl):
-  const serverCount = 4
-else:
-  const serverCount = 2
-
-createSwarm(TPort(10235))
-createSwarm(TPort(10236), false)
-
-when defined(ssl):
-  createSwarm(TPort(10237), true, true)
-  createSwarm(TPort(10238), false, true)
-
-var startTime = epochTime()
-while true:
-  if epochTime() - startTime >= 300.0:
-    break
-  if not disp.poll(): break
-  if disp.len == serverCount:
-    # Only the servers are left in the dispatcher. All clients finished,
-    # we need to therefore break.
-    break
-
-assert msgCount == (swarmSize * messagesToSend) * serverCount
-echo(msgCount)
diff --git a/tests/async/tasyncsend4757.nim b/tests/async/tasyncsend4757.nim
new file mode 100644
index 000000000..1066f38e5
--- /dev/null
+++ b/tests/async/tasyncsend4757.nim
@@ -0,0 +1,14 @@
+discard """
+  file: "tasyncsend4754.nim"
+  output: "Finished"
+"""
+
+import asyncdispatch
+
+proc f(): Future[void] {.async.} =
+  let s = newAsyncNativeSocket()
+  await s.connect("example.com", 80.Port)
+  await s.send("123")
+  echo "Finished"
+
+waitFor f()
diff --git a/tests/async/tasyncssl.nim b/tests/async/tasyncssl.nim
new file mode 100644
index 000000000..3dc131036
--- /dev/null
+++ b/tests/async/tasyncssl.nim
@@ -0,0 +1,66 @@
+discard """
+  file: "tasyncssl.nim"
+  cmd: "nim $target --hints:on --define:ssl $options $file"
+  output: "500"
+"""
+import asyncdispatch, asyncnet, net, strutils, os
+
+when defined(ssl):
+  var msgCount = 0
+
+  const
+    swarmSize = 10
+    messagesToSend = 50
+
+  var clientCount = 0
+
+  proc sendMessages(client: AsyncSocket) {.async.} =
+    for i in 0 .. <messagesToSend:
+      await send(client, "Message " & $i & "\c\L")
+
+  proc launchSwarm(port: Port) {.async.} =
+    for i in 0 .. <swarmSize:
+      var sock = newAsyncSocket()
+      var clientContext = newContext(verifyMode = CVerifyNone)
+      clientContext.wrapSocket(sock)
+      await connect(sock, "localhost", port)
+      await sendMessages(sock)
+      close(sock)
+
+  proc readMessages(client: AsyncSocket) {.async.} =
+    while true:
+      var line = await recvLine(client)
+      if line == "":
+        close(client)
+        inc(clientCount)
+        break
+      else:
+        if line.startswith("Message "):
+          inc(msgCount)
+        else:
+          doAssert false
+
+  proc createServer(port: Port) {.async.} =
+    let serverContext = newContext(verifyMode = CVerifyNone,
+                                   certFile = "tests/testdata/mycert.pem",
+                                   keyFile = "tests/testdata/mycert.pem")
+    var server = newAsyncSocket()
+    serverContext.wrapSocket(server)
+    server.setSockOpt(OptReuseAddr, true)
+    bindAddr(server, port)
+    server.listen()
+    while true:
+      let client = await accept(server)
+      serverContext.wrapConnectedSocket(client, handshakeAsServer)
+      asyncCheck readMessages(client)
+
+  asyncCheck createServer(Port(10335))
+  asyncCheck launchSwarm(Port(10335))
+  while true:
+    poll()
+    if clientCount == swarmSize: break
+
+  assert msgCount == swarmSize * messagesToSend
+  echo msgCount
+
+
diff --git a/tests/async/tasyncudp.nim b/tests/async/tasyncudp.nim
deleted file mode 100644
index 57e2be85d..000000000
--- a/tests/async/tasyncudp.nim
+++ /dev/null
@@ -1,78 +0,0 @@
-discard """
-  file: "tasyncudp.nim"
-  output: "2000"
-"""
-import asyncio, sockets, strutils, times
-
-const
-  swarmSize = 5
-  messagesToSend = 200
-
-var
-  disp = newDispatcher()
-  msgCount = 0
-  currentClient = 0
-
-proc serverRead(s: PAsyncSocket) =
-  var data = ""
-  var address = ""
-  var port: TPort
-  if s.recvFromAsync(data, 9, address, port):
-    assert address == "127.0.0.1"
-    msgCount.inc()
-
-  discard """
-
-  var line = ""
-  assert s.recvLine(line)
-
-  if line == "":
-    assert(false)
-  else:
-    if line.startsWith("Message "):
-      msgCount.inc()
-    else:
-      assert(false)
-  """
-
-proc swarmConnect(s: PAsyncSocket) =
-  for i in 1..messagesToSend:
-    s.send("Message\c\L")
-
-proc createClient(disp: var PDispatcher, port: TPort,
-                  buffered = true) =
-  currentClient.inc()
-  var client = asyncSocket(typ = SOCK_DGRAM, protocol = IPPROTO_UDP,
-                           buffered = buffered)
-  client.handleConnect = swarmConnect
-  disp.register(client)
-  client.connect("localhost", port)
-
-proc createServer(port: TPort, buffered = true) =
-  var server = asyncSocket(typ = SOCK_DGRAM, protocol = IPPROTO_UDP,
-                           buffered = buffered)
-  server.handleRead = serverRead
-  disp.register(server)
-  server.bindAddr(port)
-
-let serverCount = 2
-
-createServer(TPort(10335), false)
-createServer(TPort(10336), true)
-var startTime = epochTime()
-while true:
-  if epochTime() - startTime >= 300.0:
-    break
-
-  if not disp.poll():
-    break
-
-  if (msgCount div messagesToSend) * serverCount == currentClient:
-    createClient(disp, TPort(10335), false)
-    createClient(disp, TPort(10336), true)
-
-  if msgCount == messagesToSend * serverCount * swarmSize:
-    break
-
-assert msgCount == messagesToSend * serverCount * swarmSize
-echo(msgCount)
diff --git a/tests/async/tawaitsemantics.nim b/tests/async/tawaitsemantics.nim
index 3e0c3903e..98fb5dfd5 100644
--- a/tests/async/tawaitsemantics.nim
+++ b/tests/async/tawaitsemantics.nim
@@ -2,17 +2,21 @@ discard """
   file: "tawaitsemantics.nim"
   exitcode: 0
   output: '''
-Error caught
-Test infix
-Test call
+Error can be caught using yield
+Infix `or` raises
+Infix `and` raises
+All() raises
+Awaiting a async procedure call raises
+Awaiting a future raises
 '''
 """
 
 import asyncdispatch
 
 # This tests the behaviour of 'await' under different circumstances.
-# For example, when awaiting Future variable and this future has failed the
-# exception shouldn't be raised as described here
+# Specifically, when an awaited future raises an exception then `await` should
+# also raise that exception by `read`'ing that future. In cases where you don't
+# want this behaviour, you can use `yield`.
 # https://github.com/nim-lang/Nim/issues/4170
 
 proc thrower(): Future[void] =
@@ -23,37 +27,71 @@ proc dummy: Future[void] =
   result = newFuture[void]()
   result.complete()
 
-proc testInfix() {.async.} =
-  # Test the infix operator semantics.
+proc testInfixOr() {.async.} =
+  # Test the infix `or` operator semantics.
   var fut = thrower()
   var fut2 = dummy()
-  await fut or fut2 # Shouldn't raise.
-  # TODO: what about: await thrower() or fut2?
+  await fut or fut2 # Should raise!
+
+proc testInfixAnd() {.async.} =
+  # Test the infix `and` operator semantics.
+  var fut = thrower()
+  var fut2 = dummy()
+  await fut and fut2 # Should raise!
+
+proc testAll() {.async.} =
+  # Test the `all` semantics.
+  var fut = thrower()
+  var fut2 = dummy()
+  await all(fut, fut2) # Should raise!
 
 proc testCall() {.async.} =
   await thrower()
 
+proc testAwaitFut() {.async.} =
+  var fut = thrower()
+  await fut # This should raise.
+
 proc tester() {.async.} =
   # Test that we can handle exceptions without 'try'
   var fut = thrower()
   doAssert fut.finished
   doAssert fut.failed
   doAssert fut.error.msg == "Test"
-  await fut # We are awaiting a 'Future', so no `read` occurs.
+  yield fut # We are yielding a 'Future', so no `read` occurs.
   doAssert fut.finished
   doAssert fut.failed
   doAssert fut.error.msg == "Test"
-  echo("Error caught")
+  echo("Error can be caught using yield")
+
+  fut = testInfixOr()
+  yield fut
+  doAssert fut.finished
+  doAssert fut.failed
+  echo("Infix `or` raises")
 
-  fut = testInfix()
-  await fut
+  fut = testInfixAnd()
+  yield fut
   doAssert fut.finished
-  doAssert(not fut.failed)
-  echo("Test infix")
+  doAssert fut.failed
+  echo("Infix `and` raises")
+
+  fut = testAll()
+  yield fut
+  doAssert fut.finished
+  doAssert fut.failed
+  echo("All() raises")
 
   fut = testCall()
-  await fut
+  yield fut
+  doAssert fut.failed
+  echo("Awaiting a async procedure call raises")
+
+  # Test that await will read the future and raise an exception.
+  fut = testAwaitFut()
+  yield fut
   doAssert fut.failed
-  echo("Test call")
+  echo("Awaiting a future raises")
+
 
 waitFor(tester())
diff --git a/tests/async/tfuturevar.nim b/tests/async/tfuturevar.nim
new file mode 100644
index 000000000..73c0fddf7
--- /dev/null
+++ b/tests/async/tfuturevar.nim
@@ -0,0 +1,47 @@
+import asyncdispatch
+
+proc completeOnReturn(fut: FutureVar[string], x: bool) {.async.} =
+  if x:
+    fut.mget() = ""
+    fut.mget.add("foobar")
+    return
+
+proc completeOnImplicitReturn(fut: FutureVar[string], x: bool) {.async.} =
+  if x:
+    fut.mget() = ""
+    fut.mget.add("foobar")
+
+proc failureTest(fut: FutureVar[string], x: bool) {.async.} =
+  if x:
+    raise newException(Exception, "Test")
+
+proc manualComplete(fut: FutureVar[string], x: bool) {.async.} =
+  if x:
+    fut.mget() = "Hello World"
+    fut.complete()
+    return
+
+proc main() {.async.} =
+  var fut: FutureVar[string]
+
+  fut = newFutureVar[string]()
+  await completeOnReturn(fut, true)
+  doAssert(fut.read() == "foobar")
+
+  fut = newFutureVar[string]()
+  await completeOnImplicitReturn(fut, true)
+  doAssert(fut.read() == "foobar")
+
+  fut = newFutureVar[string]()
+  let retFut = failureTest(fut, true)
+  yield retFut
+  doAssert(fut.read().isNil)
+  doAssert(fut.finished)
+
+  fut = newFutureVar[string]()
+  await manualComplete(fut, true)
+  doAssert(fut.read() == "Hello World")
+
+
+waitFor main()
+
diff --git a/tests/async/tioselectors.nim b/tests/async/tioselectors.nim
index 2237de01a..71d901e69 100644
--- a/tests/async/tioselectors.nim
+++ b/tests/async/tioselectors.nim
@@ -217,6 +217,216 @@ when not defined(windows):
       assert(selector.isEmpty())
       result = true
 
+  when defined(macosx) or defined(freebsd) or defined(openbsd) or
+       defined(netbsd):
+
+    proc rename(frompath: cstring, topath: cstring): cint
+       {.importc: "rename", header: "<stdio.h>".}
+
+    proc createFile(name: string): cint =
+      result = posix.open(cstring(name), posix.O_CREAT or posix.O_RDWR)
+      if result == -1:
+        raiseOsError(osLastError())
+
+    proc writeFile(name: string, data: string) =
+      let fd = posix.open(cstring(name), posix.O_APPEND or posix.O_RDWR)
+      if fd == -1:
+        raiseOsError(osLastError())
+      let length = len(data).cint
+      if posix.write(fd, cast[pointer](unsafeAddr data[0]),
+                     len(data).cint) != length:
+        raiseOsError(osLastError())
+      if posix.close(fd) == -1:
+        raiseOsError(osLastError())
+
+    proc closeFile(fd: cint) =
+      if posix.close(fd) == -1:
+        raiseOsError(osLastError())
+
+    proc removeFile(name: string) =
+      let err = posix.unlink(cstring(name))
+      if err == -1:
+        raiseOsError(osLastError())
+
+    proc createDir(name: string) =
+      let err = posix.mkdir(cstring(name), 0x1FF)
+      if err == -1:
+        raiseOsError(osLastError())
+
+    proc removeDir(name: string) =
+      let err = posix.rmdir(cstring(name))
+      if err == -1:
+        raiseOsError(osLastError())
+
+    proc chmodPath(name: string, mode: cint) =
+      let err = posix.chmod(cstring(name), Mode(mode))
+      if err == -1:
+        raiseOsError(osLastError())
+
+    proc renameFile(names: string, named: string) =
+      let err = rename(cstring(names), cstring(named))
+      if err == -1:
+        raiseOsError(osLastError())
+
+    proc symlink(names: string, named: string) =
+      let err = posix.symlink(cstring(names), cstring(named))
+      if err == -1:
+        raiseOsError(osLastError())
+
+    proc openWatch(name: string): cint =
+      result = posix.open(cstring(name), posix.O_RDONLY)
+      if result == -1:
+        raiseOsError(osLastError())
+
+    const
+      testDirectory = "/tmp/kqtest"
+
+    type
+      valType = object
+        fd: cint
+        events: set[Event]
+
+    proc vnode_test(): bool =
+      proc validate[T](test: openarray[ReadyKey[T]],
+                       check: openarray[valType]): bool =
+        result = false
+        if len(test) == len(check):
+          for checkItem in check:
+            result = false
+            for testItem in test:
+              if testItem.fd == checkItem.fd and
+                 checkItem.events <= testItem.events:
+                result = true
+                break
+            if not result:
+              break
+
+      var res: seq[ReadyKey[int]]
+      var selector = newSelector[int]()
+      var events = {Event.VnodeWrite, Event.VnodeDelete, Event.VnodeExtend,
+                    Event.VnodeAttrib, Event.VnodeLink, Event.VnodeRename,
+                    Event.VnodeRevoke}
+
+      result = true
+      discard posix.unlink(testDirectory)
+
+      createDir(testDirectory)
+      var dirfd = posix.open(cstring(testDirectory), posix.O_RDONLY)
+      if dirfd == -1:
+        raiseOsError(osLastError())
+
+      selector.registerVnode(dirfd, events, 1)
+      selector.flush()
+
+      # chmod testDirectory to 0777
+      chmodPath(testDirectory, 0x1FF)
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == dirfd and
+               {Event.Vnode, Event.VnodeAttrib} <= res[0].events)
+
+      # create subdirectory
+      createDir(testDirectory & "/test")
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == dirfd and
+               {Event.Vnode, Event.VnodeWrite,
+                Event.VnodeLink} <= res[0].events)
+
+      # open test directory for watching
+      var testfd = openWatch(testDirectory & "/test")
+      selector.registerVnode(testfd, events, 2)
+      selector.flush()
+      doAssert(len(selector.select(0)) == 0)
+
+      # rename test directory
+      renameFile(testDirectory & "/test", testDirectory & "/renamed")
+      res = selector.select(0)
+      doAssert(len(res) == 2)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(validate(res,
+                 [valType(fd: dirfd, events: {Event.Vnode, Event.VnodeWrite}),
+                  valType(fd: testfd,
+                          events: {Event.Vnode, Event.VnodeRename})])
+              )
+
+      # remove test directory
+      removeDir(testDirectory & "/renamed")
+      res = selector.select(0)
+      doAssert(len(res) == 2)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(validate(res,
+                 [valType(fd: dirfd, events: {Event.Vnode, Event.VnodeWrite,
+                                              Event.VnodeLink}),
+                  valType(fd: testfd,
+                          events: {Event.Vnode, Event.VnodeDelete})])
+              )
+      # create file new test file
+      testfd = createFile(testDirectory & "/testfile")
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == dirfd and
+               {Event.Vnode, Event.VnodeWrite} <= res[0].events)
+
+      # close new test file
+      closeFile(testfd)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(len(selector.select(0)) == 0)
+
+      # chmod test file with 0666
+      chmodPath(testDirectory & "/testfile", 0x1B6)
+      doAssert(len(selector.select(0)) == 0)
+
+      testfd = openWatch(testDirectory & "/testfile")
+      selector.registerVnode(testfd, events, 1)
+      selector.flush()
+
+      # write data to test file
+      writeFile(testDirectory & "/testfile", "TESTDATA")
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == testfd and
+              {Event.Vnode, Event.VnodeWrite,
+               Event.VnodeExtend} <= res[0].events)
+
+      # symlink test file
+      symlink(testDirectory & "/testfile", testDirectory & "/testlink")
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == dirfd and
+               {Event.Vnode, Event.VnodeWrite} <= res[0].events)
+
+      # remove test file
+      removeFile(testDirectory & "/testfile")
+      res = selector.select(0)
+      doAssert(len(res) == 2)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(validate(res,
+                [valType(fd: testfd, events: {Event.Vnode, Event.VnodeDelete}),
+                 valType(fd: dirfd, events: {Event.Vnode, Event.VnodeWrite})])
+              )
+
+      # remove symlink
+      removeFile(testDirectory & "/testlink")
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == dirfd and
+               {Event.Vnode, Event.VnodeWrite} <= res[0].events)
+
+      # remove testDirectory
+      removeDir(testDirectory)
+      res = selector.select(0)
+      doAssert(len(res) == 1)
+      doAssert(len(selector.select(0)) == 0)
+      doAssert(res[0].fd == dirfd and
+               {Event.Vnode, Event.VnodeDelete} <= res[0].events)
+
   when hasThreadSupport:
 
     var counter = 0
@@ -256,6 +466,9 @@ when not defined(windows):
     processTest("Timer notification test...", timer_notification_test())
     processTest("Process notification test...", process_notification_test())
     processTest("Signal notification test...", signal_notification_test())
+  when defined(macosx) or defined(freebsd) or defined(openbsd) or
+       defined(netbsd):
+    processTest("File notification test...", vnode_test())
   echo("All tests passed!")
 else:
   import nativesockets, winlean, os, osproc
diff --git a/tests/async/tmultisync.nim b/tests/async/tmultisync.nim
new file mode 100644
index 000000000..9ef9b105c
--- /dev/null
+++ b/tests/async/tmultisync.nim
@@ -0,0 +1,8 @@
+import asyncdispatch, net, asyncnet
+
+proc recvTwice(socket: Socket | AsyncSocket,
+               size: int): Future[string] {.multisync.} =
+  var x = await socket.recv(size)
+  var y = await socket.recv(size+1)
+  return x & "aboo" & y
+
diff --git a/tests/async/tnewasyncudp.nim b/tests/async/tnewasyncudp.nim
index 7025fa20d..6277e877c 100644
--- a/tests/async/tnewasyncudp.nim
+++ b/tests/async/tnewasyncudp.nim
@@ -39,8 +39,11 @@ proc prepareAddress(intaddr: uint32, intport: uint16): ptr Sockaddr_in =
 proc launchSwarm(name: ptr SockAddr) {.async.} =
   var i = 0
   var k = 0
+  var buffer: array[16384, char]
+  var slen = sizeof(Sockaddr_in).SockLen
+  var saddr = Sockaddr_in()
   while i < swarmSize:
-    var peeraddr = prepareAddress(INADDR_ANY, 0)
+    var peeraddr = prepareAddress(INADDR_LOOPBACK, 0)
     var sock = newAsyncNativeSocket(nativesockets.AF_INET,
                                     nativesockets.SOCK_DGRAM,
                                     Protocol.IPPROTO_UDP)
@@ -50,10 +53,19 @@ proc launchSwarm(name: ptr SockAddr) {.async.} =
     let sockport = getSockName(sock.SocketHandle).int
     k = 0
     while k < messagesToSend:
+      zeroMem(addr(buffer[0]), 16384)
+      zeroMem(cast[pointer](addr(saddr)), sizeof(Sockaddr_in))      
       var message = "Message " & $(i * messagesToSend + k)
       await sendTo(sock, addr message[0], len(message),
                    name, sizeof(Sockaddr_in).SockLen)
-      saveSendingPort(sockport)
+      var size = await recvFromInto(sock, cast[pointer](addr buffer[0]),
+                                    16384, cast[ptr SockAddr](addr saddr),
+                                    addr slen)
+      size = 0
+      var grammString = $buffer
+      if grammString == message:
+        saveSendingPort(sockport)
+        inc(recvCount)
       inc(k)
     closeSocket(sock)
     inc(i)
@@ -75,13 +87,14 @@ proc readMessages(server: AsyncFD) {.async.} =
     var grammString = $buffer
     if grammString.startswith("Message ") and
        saddr.sin_addr.s_addr == 0x100007F:
+      await sendTo(server, addr grammString[0], len(grammString),
+                   cast[ptr SockAddr](addr saddr), slen)
       inc(msgCount)
       saveReceivedPort(ntohs(saddr.sin_port).int)
-      inc(recvCount)
     inc(i)
 
 proc createServer() {.async.} =
-  var name = prepareAddress(INADDR_ANY, serverPort)
+  var name = prepareAddress(INADDR_LOOPBACK, serverPort)
   var server = newAsyncNativeSocket(nativesockets.AF_INET,
                                     nativesockets.SOCK_DGRAM,
                                     Protocol.IPPROTO_UDP)
@@ -90,7 +103,7 @@ proc createServer() {.async.} =
     raiseOSError(osLastError())
   asyncCheck readMessages(server)
 
-var name = prepareAddress(0x7F000001, serverPort) # 127.0.0.1
+var name = prepareAddress(INADDR_LOOPBACK, serverPort) # 127.0.0.1
 asyncCheck createServer()
 asyncCheck launchSwarm(cast[ptr SockAddr](name))
 while true:
diff --git a/tests/async/tpolltimeouts.nim b/tests/async/tpolltimeouts.nim
new file mode 100644
index 000000000..dac33732d
--- /dev/null
+++ b/tests/async/tpolltimeouts.nim
@@ -0,0 +1,19 @@
+discard """
+  output: "true"
+"""
+# Issue https://github.com/nim-lang/Nim/issues/4262
+import asyncdispatch, times
+
+proc foo(): Future[int] {.async.} =
+  return 1
+
+proc bar(): Future[int] {.async.} =
+  return await foo()
+
+let start = epochTime()
+let barFut = bar()
+
+while not barFut.finished:
+  poll(2000)
+
+echo(epochTime() - start < 1.0)
diff --git a/tests/async/tupcoming_async.nim b/tests/async/tupcoming_async.nim
new file mode 100644
index 000000000..137794afd
--- /dev/null
+++ b/tests/async/tupcoming_async.nim
@@ -0,0 +1,114 @@
+discard """
+  output: '''
+OK
+OK
+OK
+OK
+'''
+"""
+
+when defined(upcoming):
+  import asyncdispatch, times, osproc, streams
+
+  const supportedPlatform = defined(linux) or defined(freebsd) or
+                            defined(netbsd) or defined(openbsd) or
+                            defined(macosx)
+
+  proc waitEvent(ev: AsyncEvent, closeEvent = false): Future[void] =
+    var retFuture = newFuture[void]("waitEvent")
+    proc cb(fd: AsyncFD): bool =
+      retFuture.complete()
+      if closeEvent:
+        return true
+      else:
+        return false
+    addEvent(ev, cb)
+    return retFuture
+
+  proc waitTimer(timeout: int): Future[void] =
+    var retFuture = newFuture[void]("waitTimer")
+    proc cb(fd: AsyncFD): bool =
+      retFuture.complete()
+    addTimer(timeout, true, cb)
+    return retFuture
+
+  proc waitProcess(p: Process): Future[void] =
+    var retFuture = newFuture[void]("waitProcess")
+    proc cb(fd: AsyncFD): bool =
+      retFuture.complete()
+    addProcess(p.processID(), cb)
+    return retFuture
+
+  proc delayedSet(ev: AsyncEvent, timeout: int): Future[void] {.async.} =
+    await waitTimer(timeout)
+    ev.setEvent()
+
+  proc timerTest() =
+    waitFor(waitTimer(200))
+    echo "OK"
+
+  proc eventTest() =
+    var event = newAsyncEvent()
+    var fut = waitEvent(event)
+    asyncCheck(delayedSet(event, 500))
+    waitFor(fut or waitTimer(1000))
+    if fut.finished:
+      echo "OK"
+    else:
+      echo "eventTest: Timeout expired before event received!"
+
+  proc processTest() =
+    when defined(windows):
+      var process = startProcess("ping.exe", "",
+                                 ["127.0.0.1", "-n", "2", "-w", "100"], nil,
+                                 {poStdErrToStdOut, poUsePath, poInteractive,
+                                 poDemon})
+    else:
+      var process = startProcess("/bin/sleep", "", ["1"], nil,
+                                 {poStdErrToStdOut, poUsePath})
+    var fut = waitProcess(process)
+    waitFor(fut or waitTimer(2000))
+    if fut.finished and process.peekExitCode() == 0:
+      echo "OK"
+    else:
+      echo "processTest: Timeout expired before process exited!"
+
+  when supportedPlatform:
+    import posix
+
+    proc waitSignal(signal: int): Future[void] =
+      var retFuture = newFuture[void]("waitSignal")
+      proc cb(fd: AsyncFD): bool =
+        retFuture.complete()
+      addSignal(signal, cb)
+      return retFuture
+
+    proc delayedSignal(signal: int, timeout: int): Future[void] {.async.} =
+      await waitTimer(timeout)
+      var pid = posix.getpid()
+      discard posix.kill(pid, signal.cint)
+
+    proc signalTest() =
+      var fut = waitSignal(posix.SIGINT)
+      asyncCheck(delayedSignal(posix.SIGINT, 500))
+      waitFor(fut or waitTimer(1000))
+      if fut.finished:
+        echo "OK"
+      else:
+        echo "signalTest: Timeout expired before signal received!"
+
+  when supportedPlatform:
+    timerTest()
+    eventTest()
+    processTest()
+    signalTest()
+  elif defined(windows):
+    timerTest()
+    eventTest()
+    processTest()
+    echo "OK"
+  else:
+    eventTest()
+    echo "OK\nOK\nOK"
+else:
+  echo "OK\nOK\nOK\nOK"
diff --git a/tests/bind/tnicerrorforsymchoice.nim b/tests/bind/tnicerrorforsymchoice.nim
index 5145fdcff..bd00188fa 100644
--- a/tests/bind/tnicerrorforsymchoice.nim
+++ b/tests/bind/tnicerrorforsymchoice.nim
@@ -1,6 +1,6 @@
 discard """
   line: 18
-  errormsg: "type mismatch: got (proc (s: TScgi) | proc (client: AsyncSocket, headers: StringTableRef, input: string){.gcsafe, locks: 0.}"
+  errormsg: "type mismatch: got (proc (s: TScgi) | proc (client: AsyncSocket, headers: StringTableRef, input: string){.noSideEffect, gcsafe, locks: 0.}"
 """
 
 #bug #442
diff --git a/tests/ccgbugs/tescaping_temps.nim b/tests/ccgbugs/tescaping_temps.nim
index ef078913b..ea09261ea 100644
--- a/tests/ccgbugs/tescaping_temps.nim
+++ b/tests/ccgbugs/tescaping_temps.nim
@@ -18,3 +18,14 @@ test proc() =
         test proc() = discard
     else:
         test proc() = discard
+
+# ensure 'case' does not trigger the same bug:
+test proc() =
+    let f = 15
+    case f
+    of 10:
+        test proc() = discard
+    of 3:
+        test proc() = discard
+    else:
+        test proc() = discard
diff --git a/tests/ccgbugs/tuple_canon.nim b/tests/ccgbugs/tuple_canon.nim
index 960e2aae9..a607f9cab 100644
--- a/tests/ccgbugs/tuple_canon.nim
+++ b/tests/ccgbugs/tuple_canon.nim
@@ -1,3 +1,10 @@
+
+
+# bug #4626
+var foo: (int, array[1, int]) # Tuple must be of length > 1
+let bar = (1, [1])
+foo = bar                     # No error if assigned directly
+
 # bug #2250
 
 import
diff --git a/tests/closure/tclosure4.nim b/tests/closure/tclosure4.nim
index 69c076cd5..bc134ded6 100644
--- a/tests/closure/tclosure4.nim
+++ b/tests/closure/tclosure4.nim
@@ -1,7 +1,7 @@
 
 import json, tables, sequtils
 
-proc run(json_params: Table) =
+proc run(json_params: OrderedTable) =
   let json_elems = json_params["files"].elems
   # These fail compilation.
   var files = map(json_elems, proc (x: JsonNode): string = x.str)
diff --git a/tests/collections/tableadds.nim b/tests/collections/tableadds.nim
new file mode 100644
index 000000000..71f1fad7d
--- /dev/null
+++ b/tests/collections/tableadds.nim
@@ -0,0 +1,13 @@
+discard """
+  output: '''done'''
+"""
+
+import tables
+
+proc main =
+  var tab = newTable[string, string]()
+  for i in 0..1000:
+    tab.add "key", "value " & $i
+
+main()
+echo "done"
diff --git a/tests/collections/ttables.nim b/tests/collections/ttables.nim
index a8a182a78..59fef4920 100644
--- a/tests/collections/ttables.nim
+++ b/tests/collections/ttables.nim
@@ -134,6 +134,29 @@ block mpairsTableTest1:
 block SyntaxTest:
   var x = toTable[int, string]({:})
 
+# Until #4448 is fixed, these tests will fail
+when false:
+  block clearTableTest:
+    var t = data.toTable
+    assert t.len() != 0
+    t.clear()
+    assert t.len() == 0
+
+  block clearOrderedTableTest:
+    var t = data.toOrderedTable
+    assert t.len() != 0
+    t.clear()
+    assert t.len() == 0
+
+  block clearCountTableTest:
+    var t = initCountTable[string]()
+    t.inc("90", 3)
+    t.inc("12", 2)
+    t.inc("34", 1)
+    assert t.len() != 0
+    t.clear()
+    assert t.len() == 0
+
 proc orderedTableSortTest() =
   var t = initOrderedTable[string, int](2)
   for key, val in items(data): t[key] = val
diff --git a/tests/collections/ttablesref.nim b/tests/collections/ttablesref.nim
index 32494f1f2..12af1ccbb 100644
--- a/tests/collections/ttablesref.nim
+++ b/tests/collections/ttablesref.nim
@@ -141,6 +141,31 @@ block anonZipTest:
   let values = @[1, 2, 3]
   doAssert "{a: 1, b: 2, c: 3}" == $ toTable zip(keys, values)
 
+block clearTableTest:
+  var t = newTable[string, float]()
+  t["test"] = 1.2345
+  t["111"] = 1.000043
+  t["123"] = 1.23
+  assert t.len() != 0
+  t.clear()
+  assert t.len() == 0
+
+block clearOrderedTableTest:
+  var t = newOrderedTable[string, int](2)
+  for key, val in items(data): t[key] = val
+  assert t.len() != 0
+  t.clear()
+  assert t.len() == 0
+
+block clearCountTableTest:
+  var t = newCountTable[string]()
+  t.inc("90", 3)
+  t.inc("12", 2)
+  t.inc("34", 1)
+  assert t.len() != 0
+  t.clear()
+  assert t.len() == 0
+
 orderedTableSortTest()
 echo "true"
 
diff --git a/tests/cpp/tempty_generic_obj.nim b/tests/cpp/tempty_generic_obj.nim
new file mode 100644
index 000000000..e2957a5cd
--- /dev/null
+++ b/tests/cpp/tempty_generic_obj.nim
@@ -0,0 +1,22 @@
+discard """
+  cmd: "nim cpp $file"
+  output: '''int
+float'''
+"""
+
+import typetraits
+
+# bug #4625
+type
+  Vector {.importcpp: "std::vector<'0 >", header: "vector".} [T] = object
+
+proc initVector[T](): Vector[T] {.importcpp: "'0(@)", header: "vector", constructor.}
+
+proc doSomething[T](v: var Vector[T]) =
+  echo T.name
+
+var v = initVector[int]()
+v.doSomething()
+
+var vf = initVector[float]()
+vf.doSomething() # Nim uses doSomething[int] here in C++
diff --git a/tests/distinct/tcurrncy.nim b/tests/distinct/tcurrncy.nim
index 7ad4caea4..2675de739 100644
--- a/tests/distinct/tcurrncy.nim
+++ b/tests/distinct/tcurrncy.nim
@@ -2,7 +2,7 @@ discard """
   file: "tcurrncy.nim"
   output: "25"
 """
-template Additive(typ: typeDesc): stmt =
+template Additive(typ: untyped) =
   proc `+` *(x, y: typ): typ {.borrow.}
   proc `-` *(x, y: typ): typ {.borrow.}
 
@@ -10,18 +10,18 @@ template Additive(typ: typeDesc): stmt =
   proc `+` *(x: typ): typ {.borrow.}
   proc `-` *(x: typ): typ {.borrow.}
 
-template Multiplicative(typ, base: typeDesc): stmt {.immediate.} =
+template Multiplicative(typ, base: untyped) =
   proc `*` *(x: typ, y: base): typ {.borrow.}
   proc `*` *(x: base, y: typ): typ {.borrow.}
   proc `div` *(x: typ, y: base): typ {.borrow.}
   proc `mod` *(x: typ, y: base): typ {.borrow.}
 
-template Comparable(typ: typeDesc): stmt =
+template Comparable(typ: untyped) =
   proc `<` * (x, y: typ): bool {.borrow.}
   proc `<=` * (x, y: typ): bool {.borrow.}
   proc `==` * (x, y: typ): bool {.borrow.}
 
-template DefineCurrency(typ, base: expr): stmt {.immediate.} =
+template DefineCurrency(typ, base: untyped) =
   type
     typ* = distinct base
   Additive(typ)
diff --git a/tests/effects/tsidee4.nim b/tests/effects/tsidee4.nim
index 2cb88a23e..ecc79580c 100644
--- a/tests/effects/tsidee4.nim
+++ b/tests/effects/tsidee4.nim
@@ -1,13 +1,13 @@
 discard """
   file: "tsidee4.nim"
-  line: 15
-  errormsg: "type mismatch"
+  line: 12
+  errormsg: "'noSideEffect' can have side effects"
 """
 
 var
   global: int
 
-proc dontcare(x: int): int = return x
+proc dontcare(x: int): int = return global
 
 proc noSideEffect(x, y: int, p: proc (a: int): int {.noSideEffect.}): int {.noSideEffect.} =
   return x + y + dontcare(x)
diff --git a/tests/exception/texceptions.nim b/tests/exception/texceptions.nim
index bdf338599..b30b3874b 100644
--- a/tests/exception/texceptions.nim
+++ b/tests/exception/texceptions.nim
@@ -9,7 +9,7 @@ FINALLY
 RECOVER
 
 BEFORE
-EXCEPT
+EXCEPT: IOError: hi
 FINALLY
 '''
 """
@@ -52,10 +52,10 @@ echo ""
 proc return_in_except =
   try:
     echo "BEFORE"
-    raise newException(IOError, "")
+    raise newException(IOError, "hi")
 
   except:
-    echo "EXCEPT"
+    echo "EXCEPT: ", getCurrentException().name, ": ", getCurrentExceptionMsg()
     return
 
   finally:
diff --git a/tests/exception/tunhandledexc.nim b/tests/exception/tunhandledexc.nim
index 63a402414..c318aec81 100644
--- a/tests/exception/tunhandledexc.nim
+++ b/tests/exception/tunhandledexc.nim
@@ -14,10 +14,9 @@ proc genErrors(s: string) =
     raise newException(EsomeotherErr, "bla")
 
 when true:
+  try: discard except: discard
+
   try:
     genErrors("errssor!")
   except ESomething:
     echo("Error happened")
-
-
-
diff --git a/tests/float/tfloat4.nim b/tests/float/tfloat4.nim
index 006b4d88f..d7783ce26 100644
--- a/tests/float/tfloat4.nim
+++ b/tests/float/tfloat4.nim
@@ -30,8 +30,10 @@ let testFloats = [
   "0.00097656250000000021684043449710088680149056017398834228515625"
 ]
 
-for num in testFloats:
-  doAssert num.parseFloat.floatToStr.parseFloat == num.parseFloat
+when not defined(windows):
+  # Windows' sprintf produces niceties like -1.#INF...
+  for num in testFloats:
+    doAssert num.parseFloat.floatToStr.parseFloat == num.parseFloat
 
 doAssert "0".parseFloat == 0.0
 doAssert "-.1".parseFloat == -0.1
diff --git a/tests/generics/tlamba_in_generic.nim b/tests/generics/tlamba_in_generic.nim
new file mode 100644
index 000000000..91d417b5e
--- /dev/null
+++ b/tests/generics/tlamba_in_generic.nim
@@ -0,0 +1,13 @@
+discard """
+  output: '''!!Hi!!'''
+"""
+# bug #4658
+import future
+
+var x = 123
+
+proc twice[T](f: T -> T): T -> T = (x: T) => f(f(x))
+
+proc quote(s: string): string = "!" & s & "!"
+
+echo twice(quote)("Hi")
diff --git a/tests/generics/ttypeclass_to_typeclass.nim b/tests/generics/ttypeclass_to_typeclass.nim
new file mode 100644
index 000000000..a5f010450
--- /dev/null
+++ b/tests/generics/ttypeclass_to_typeclass.nim
@@ -0,0 +1,12 @@
+# bug #4672
+type
+  EnumContainer[T: enum] = object
+    v: T
+  SomeEnum {.pure.} = enum
+    A,B,C
+
+proc value[T: enum](this: EnumContainer[T]): T =
+  this.v
+
+var enumContainer: EnumContainer[SomeEnum]
+discard enumContainer.value()
diff --git a/tests/import_in_config/nim.cfg b/tests/import_in_config/nim.cfg
new file mode 100644
index 000000000..af112d112
--- /dev/null
+++ b/tests/import_in_config/nim.cfg
@@ -0,0 +1,2 @@
+import = "other"
+path = "$projectDir"
diff --git a/tests/import_in_config/other.nim b/tests/import_in_config/other.nim
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/import_in_config/other.nim
diff --git a/tests/import_in_config/tmain.nim b/tests/import_in_config/tmain.nim
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/import_in_config/tmain.nim
diff --git a/tests/js/taddr.nim b/tests/js/taddr.nim
index 1fba30d55..d8ff4c11b 100644
--- a/tests/js/taddr.nim
+++ b/tests/js/taddr.nim
@@ -70,3 +70,10 @@ proc testPtr(p: pointer, a: int) =
 var i = 123
 testPtr(addr i, 5)
 doAssert(i == 124)
+
+var someGlobal = 5
+proc getSomeGlobalPtr(): ptr int = addr someGlobal
+let someGlobalPtr = getSomeGlobalPtr()
+doAssert(someGlobalPtr[] == 5)
+someGlobalPtr[] = 10
+doAssert(someGlobal == 10)
diff --git a/tests/js/tbyvar.nim b/tests/js/tbyvar.nim
index 9714cd56b..40aebd13b 100644
--- a/tests/js/tbyvar.nim
+++ b/tests/js/tbyvar.nim
@@ -41,3 +41,11 @@ proc bar(s: var seq[int], a: int) =
   foo(s)
 s.bar(5)
 doAssert(s == @[123, 1])
+
+import tables
+block: # Test get addr of byvar return value
+  var t = initTable[string, int]()
+  t["hi"] = 5
+  let a = addr t["hi"]
+  a[] = 10
+  doAssert(t["hi"] == 10)
diff --git a/tests/js/tunittests.nim b/tests/js/tunittests.nim
index 4b09c99a9..7c2e70563 100644
--- a/tests/js/tunittests.nim
+++ b/tests/js/tunittests.nim
@@ -1,5 +1,7 @@
 discard """
-  output: '''[OK] >:)'''
+  output: '''
+[Suite] Bacon
+  [OK] >:)'''
 """
 
 import unittest
diff --git a/tests/macros/tgettype2.nim b/tests/macros/tgettype2.nim
new file mode 100644
index 000000000..f129e6e1b
--- /dev/null
+++ b/tests/macros/tgettype2.nim
@@ -0,0 +1,67 @@
+
+import macros, typetraits
+
+type Foo = distinct int
+type Bar = distinct int
+type Baz = int
+
+let foo = 0.Foo
+let bar = 1.Bar
+let baz = 2.Baz
+
+type MyType[T] = distinct tuple[a,b:T]
+type MySimpleType = distinct tuple[a,b: int]
+
+var v: seq[int]
+var vv: seq[float]
+var t: MyType[int]
+var tt: MyType[float]
+var s: MySimpleType
+
+echo "############"
+echo "#### gt ####"
+echo "############"
+
+macro gt(a: typed): string =
+  let b = a.getType
+  var str = "gt(" & $a & "):\t" & b.repr
+  if b.kind == nnkSym: # bad predicat to check weather the type has an implementation
+    str = str & ", " & b.getType.repr  # append the implementation to the result
+  result = newLit(str)
+
+echo gt(Foo) # typeDesc[Foo]
+echo gt(Bar) # typeDesc[Bar]
+echo gt(Baz) # typeDesc[int]     shouldn't it be typeDesc[Baz]?
+echo gt(foo) # distinct[int]     I would prefer Foo, distinct[int]
+echo gt(bar) # distinct[int]     I would prefer Bar, distinct[int]
+echo gt(baz) # int, int          I would prefer Baz, int
+
+echo gt(v)   # seq[int], ok
+echo gt(vv)  # seq[float], ok
+echo gt(t)   # MyType, distinct[tuple[int, int]]      I would prefer MyType[int],   distinct[tuple[int, int]]
+echo gt(tt)  # MyType, distinct[tuple[float, float]]  I would prefer MyType[float], distinct[tuple[int, int]]
+echo gt(s)   # distinct[tuple[int, int]]              I would prefer MySimpleType, distinct[tuple[int,int]]
+
+echo "#############"
+echo "#### gt2 ####"
+echo "#############"
+
+# get type name via typetraits
+
+macro gt2(a: typed): string =
+  let prefix = "gt2(" & $a & "): \t"
+  result = quote do:
+    `prefix` & `a`.type.name
+
+echo gt2(Foo) # Foo  shouldn't this be typeDesc[Foo] ?
+echo gt2(Bar) # Bar  shouldn't this be typeDesc[Bar] ?
+echo gt2(Baz) # Baz  shouldn't this be typeDesc[Baz] ?
+echo gt2(foo) # Foo
+echo gt2(bar) # Bar
+echo gt2(baz) # Baz
+
+echo gt2(v)   # seq[int]
+echo gt2(vv)  # seq[float]
+echo gt2(t)   # MyType[system.int]      why is it system.int and not just int like in seq?
+echo gt2(tt)  # MyType[system.float]    why is it system.float and not just float like in seq?
+echo gt2(s)   # MySimpleType
diff --git a/tests/manyloc/keineschweine/README.md b/tests/manyloc/keineschweine/README.md
index 1323f4ae3..20facbced 100644
--- a/tests/manyloc/keineschweine/README.md
+++ b/tests/manyloc/keineschweine/README.md
@@ -11,7 +11,7 @@ Just a dumb little game
 
 ### How to build?
 
-* `git clone --recursive git://github.com/fowlmouth/keineSchweine.git somedir`
+* `git clone --recursive https://github.com/fowlmouth/keineSchweine.git somedir`
 * `cd somedir`
 *  `nim c -r nakefile test` or `nim c -r keineschweine && ./keineschweine`
 
diff --git a/tests/metatype/twildtypedesc.nim b/tests/metatype/twildtypedesc.nim
new file mode 100644
index 000000000..268bff0d8
--- /dev/null
+++ b/tests/metatype/twildtypedesc.nim
@@ -0,0 +1,43 @@
+discard """
+  output: '''123
+123
+123
+123
+123
+123'''
+"""
+
+import strutils
+
+proc unpack(t: typedesc[string], v: string): string = $v
+proc unpack(t: typedesc[int], v: string): int = parseInt(v)
+
+proc unpack[T](v: string): T =
+  unpack T, v
+
+var s = "123"
+
+assert(unpack[string](s) is string)
+assert(unpack[int](s) is int)
+
+echo unpack[int](s)
+echo unpack[string](s)
+
+echo unpack(int,s)
+echo unpack(string,s)
+
+template `as`*(x: untyped, t: typedesc): untyped = unpack(t,x)
+
+echo s as int
+echo s as string
+
+# bug #4534
+
+proc unit(t: typedesc[int]): t = 0
+proc unit(t: typedesc[string]): t = ""
+proc unit(t: typedesc[float]): t = 0.0
+
+assert unit(int) == 0
+assert unit(string) == ""
+assert unit(float) == 0.0
+
diff --git a/tests/objects/tinherit_from_generic.nim b/tests/objects/tinherit_from_generic.nim
new file mode 100644
index 000000000..6e0e929ce
--- /dev/null
+++ b/tests/objects/tinherit_from_generic.nim
@@ -0,0 +1,13 @@
+discard """
+  output: '''true'''
+"""
+
+# bug #4673
+type
+  BaseObj[T] = ref object of RootObj
+  SomeObj = ref object of BaseObj[int]
+
+proc doSomething[T](o: BaseObj[T]) =
+  echo "true"
+var o = new(SomeObj)
+o.doSomething() # Error: cannot instantiate: 'T'
diff --git a/tests/osproc/tafalse.nim b/tests/osproc/tafalse.nim
new file mode 100644
index 000000000..24fd4fb2e
--- /dev/null
+++ b/tests/osproc/tafalse.nim
@@ -0,0 +1,3 @@
+# 'tafalse.nim' to ensure it is compiled before texitcode.nim
+import system
+quit(QuitFailure)
diff --git a/tests/osproc/texitcode.nim b/tests/osproc/texitcode.nim
new file mode 100644
index 000000000..1e83658c2
--- /dev/null
+++ b/tests/osproc/texitcode.nim
@@ -0,0 +1,18 @@
+discard """
+  file: "texitcode.nim"
+  output: ""
+"""
+import osproc, os
+
+const filename = when defined(Windows): "tafalse.exe" else: "tafalse"
+let dir = getCurrentDir() / "tests" / "osproc"
+doAssert fileExists(dir / filename)
+
+var p = startProcess(filename, dir)
+doAssert(waitForExit(p) == QuitFailure)
+
+p = startProcess(filename, dir)
+var running = true
+while running:
+  running = running(p)
+doAssert(waitForExit(p) == QuitFailure)
diff --git a/tests/overload/importA.nim b/tests/overload/importA.nim
new file mode 100644
index 000000000..f045d11b4
--- /dev/null
+++ b/tests/overload/importA.nim
@@ -0,0 +1,5 @@
+type
+  Field* = object
+    elemSize*: int
+
+template `+`*(x: untyped, y: Field): untyped = x
diff --git a/tests/overload/importB.nim b/tests/overload/importB.nim
new file mode 100644
index 000000000..2dc3adf7a
--- /dev/null
+++ b/tests/overload/importB.nim
@@ -0,0 +1,15 @@
+type
+  Foo*[T] = object
+    v*: T
+
+template `+`*(x: Foo, y: Foo): untyped = x
+
+template newvar*(r: untyped): untyped {.dirty.} =
+  var r: float
+
+template t1*(x: Foo): untyped =
+  newvar(y1)
+  x
+template t2*(x: Foo): untyped =
+  newvar(y2)
+  x
diff --git a/tests/overload/timport.nim b/tests/overload/timport.nim
new file mode 100644
index 000000000..8ea65e54d
--- /dev/null
+++ b/tests/overload/timport.nim
@@ -0,0 +1,7 @@
+# issue 4675
+import importA  # comment this out to make it work
+import importB
+
+var x: Foo[float]
+var y: Foo[float]
+let r = t1(x) + t2(y)
diff --git a/tests/overload/tselfderef.nim b/tests/overload/tselfderef.nim
new file mode 100644
index 000000000..708e4043b
--- /dev/null
+++ b/tests/overload/tselfderef.nim
@@ -0,0 +1,17 @@
+# bug #4671
+{.experimental.}
+{.this: self.}
+
+type
+  SomeObj = object
+    f: int
+
+proc f(num: int) =
+  discard
+
+var intptr: ptr int
+intptr.f() # compiles fine
+
+proc doSomething(self: var SomeObj) =
+  var pint: ptr int
+  pint.f() # Error: expression '.(pint, "f")' cannot be called
diff --git a/tests/parallel/tsendtwice.nim b/tests/parallel/tsendtwice.nim
new file mode 100644
index 000000000..0700fc4da
--- /dev/null
+++ b/tests/parallel/tsendtwice.nim
@@ -0,0 +1,71 @@
+discard """
+  output: '''obj2 nil
+obj nil
+obj3 nil
+3
+obj2 nil
+obj nil
+obj3 nil'''
+  cmd: "nim c -r --threads:on $file"
+"""
+
+# bug #4776
+
+import tables
+
+type
+  Base* = ref object of RootObj
+    someSeq: seq[int]
+    baseData: array[400000, byte]
+  Derived* = ref object of Base
+    data: array[400000, byte]
+
+type
+  ThreadPool = ref object
+    threads: seq[ptr Thread[ThreadArg]]
+    channels: seq[ThreadArg]
+  TableChannel = Channel[TableRef[string, Base]]
+  ThreadArg = ptr TableChannel
+
+var globalTable {.threadvar.}: TableRef[string, Base]
+globalTable = newTable[string, Base]()
+let d = new(Derived)
+globalTable.add("obj", d)
+globalTable.add("obj2", d)
+globalTable.add("obj3", d)
+
+proc testThread(channel: ptr TableChannel) {.thread.} =
+  globalTable = channel[].recv()
+  for k, v in pairs globaltable:
+    echo k, " ", v.someSeq
+  var myObj: Base
+  deepCopy(myObj, globalTable["obj"])
+  myObj.someSeq = newSeq[int](100)
+  let table = channel[].recv() # same table
+  echo table.len
+  for k, v in mpairs table:
+    echo k, " ", v.someSeq
+  assert(table.contains("obj")) # fails!
+  assert(table.contains("obj2")) # fails!
+  assert(table.contains("obj3")) # fails!
+
+var channel: TableChannel
+
+proc newThreadPool(threadCount: int) = #: ThreadPool =
+  #new(result)
+  #result.threads = newSeq[ptr Thread[ThreadArg]](threadCount)
+  #var channel = cast[ptr TableChannel](allocShared0(sizeof(TableChannel)))
+  channel.open()
+  channel.send(globalTable)
+  channel.send(globalTable)
+  #createThread(threadPtr[], testThread, addr channel)
+  testThread(addr channel)
+  #result.threads[i] = threadPtr
+
+proc stop(p: ThreadPool) =
+  for t in p.threads:
+    joinThread(t[])
+    dealloc(t)
+
+
+newThreadPool(1)#.stop()
diff --git a/tests/rodfiles/amethods.nim b/tests/rodfiles/amethods.nim
index ecd36d491..29cf757f7 100644
--- a/tests/rodfiles/amethods.nim
+++ b/tests/rodfiles/amethods.nim
@@ -1,11 +1,11 @@
 
 type
-  TBaseClass* = object of TObject
+  TBaseClass* = object of RootObj
 
 proc newBaseClass*: ref TBaseClass =
   new result
 
-method echoType*(x: ref TBaseClass) =
+method echoType*(x: ref TBaseClass) {.base.} =
   echo "base class"
 
 proc echoAlias*(x: ref TBaseClass) =
diff --git a/tests/rodfiles/gtkex1.nim b/tests/rodfiles/gtkex1.nim
index 156ba5322..50779cb9e 100644
--- a/tests/rodfiles/gtkex1.nim
+++ b/tests/rodfiles/gtkex1.nim
@@ -1,12 +1,12 @@
 import
   cairo, glib2, gtk2
 
-proc destroy(widget: pWidget, data: pgpointer) {.cdecl.} =
+proc destroy(widget: PWidget, data: Pgpointer) {.cdecl.} =
   main_quit()
 
 var
-  window: pWidget
-nimrod_init()
+  window: PWidget
+nim_init()
 window = window_new(WINDOW_TOPLEVEL)
 discard signal_connect(window, "destroy",
                        SIGNAL_FUNC(gtkex1.destroy), nil)
diff --git a/tests/rodfiles/gtkex2.nim b/tests/rodfiles/gtkex2.nim
index 70926bd50..0949e4872 100644
--- a/tests/rodfiles/gtkex2.nim
+++ b/tests/rodfiles/gtkex2.nim
@@ -2,17 +2,17 @@
 import
   glib2, gtk2
 
-proc destroy(widget: pWidget, data: pgpointer){.cdecl.} =
+proc destroy(widget: PWidget, data: Pgpointer){.cdecl.} =
   main_quit()
 
 var
   window: PWidget
   button: PWidget
 
-nimrod_init()
+nim_init()
 window = window_new(WINDOW_TOPLEVEL)
 button = button_new("Click me")
-set_border_width(PContainer(Window), 5)
+set_border_width(PContainer(window), 5)
 add(PContainer(window), button)
 discard signal_connect(window, "destroy",
                            SIGNAL_FUNC(gtkex2.destroy), nil)
diff --git a/tests/rodfiles/int2bool.nim b/tests/rodfiles/int2bool.nim
index 0f6fd14e6..bb0682844 100644
--- a/tests/rodfiles/int2bool.nim
+++ b/tests/rodfiles/int2bool.nim
@@ -2,7 +2,6 @@
 {.overflowchecks: on.}
 
 converter uglyToBool*(x: int): bool =
-  {.Breakpoint.}
   result = x != 0
 
 
diff --git a/tests/stdlib/thttpclient.nim b/tests/stdlib/thttpclient.nim
new file mode 100644
index 000000000..dd9a6139a
--- /dev/null
+++ b/tests/stdlib/thttpclient.nim
@@ -0,0 +1,113 @@
+discard """
+  cmd: "nim c -d:ssl $file"
+"""
+
+import strutils
+from net import TimeoutError
+
+import httpclient, asyncdispatch
+
+const manualTests = false
+
+proc asyncTest() {.async.} =
+  var client = newAsyncHttpClient()
+  var resp = await client.request("http://example.com/")
+  doAssert(resp.code.is2xx)
+  doAssert("<title>Example Domain</title>" in resp.body)
+
+  resp = await client.request("http://example.com/404")
+  doAssert(resp.code.is4xx)
+  doAssert(resp.code == Http404)
+  doAssert(resp.status == Http404)
+
+  resp = await client.request("https://google.com/")
+  doAssert(resp.code.is2xx or resp.code.is3xx)
+
+  # getContent
+  try:
+    discard await client.getContent("https://google.com/404")
+    doAssert(false, "HttpRequestError should have been raised")
+  except HttpRequestError:
+    discard
+  except:
+    doAssert(false, "HttpRequestError should have been raised")
+
+
+  # Multipart test.
+  var data = newMultipartData()
+  data["output"] = "soap12"
+  data["uploaded_file"] = ("test.html", "text/html",
+    "<html><head></head><body><p>test</p></body></html>")
+  resp = await client.post("http://validator.w3.org/check", multipart=data)
+  doAssert(resp.code.is2xx)
+
+  # onProgressChanged
+  when manualTests:
+    proc onProgressChanged(total, progress, speed: BiggestInt) {.async.} =
+      echo("Downloaded ", progress, " of ", total)
+      echo("Current rate: ", speed div 1000, "kb/s")
+    client.onProgressChanged = onProgressChanged
+    discard await client.getContent("http://speedtest-ams2.digitalocean.com/100mb.test")
+
+  client.close()
+
+  # Proxy test
+  #when manualTests:
+  #  client = newAsyncHttpClient(proxy = newProxy("http://51.254.106.76:80/"))
+  #  var resp = await client.request("https://github.com")
+  #  echo resp
+
+proc syncTest() =
+  var client = newHttpClient()
+  var resp = client.request("http://example.com/")
+  doAssert(resp.code.is2xx)
+  doAssert("<title>Example Domain</title>" in resp.body)
+
+  resp = client.request("http://example.com/404")
+  doAssert(resp.code.is4xx)
+  doAssert(resp.code == Http404)
+  doAssert(resp.status == Http404)
+
+  resp = client.request("https://google.com/")
+  doAssert(resp.code.is2xx or resp.code.is3xx)
+
+  # getContent
+  try:
+    discard client.getContent("https://google.com/404")
+    doAssert(false, "HttpRequestError should have been raised")
+  except HttpRequestError:
+    discard
+  except:
+    doAssert(false, "HttpRequestError should have been raised")
+
+  # Multipart test.
+  var data = newMultipartData()
+  data["output"] = "soap12"
+  data["uploaded_file"] = ("test.html", "text/html",
+    "<html><head></head><body><p>test</p></body></html>")
+  resp = client.post("http://validator.w3.org/check", multipart=data)
+  doAssert(resp.code.is2xx)
+
+  # onProgressChanged
+  when manualTests:
+    proc onProgressChanged(total, progress, speed: BiggestInt) =
+      echo("Downloaded ", progress, " of ", total)
+      echo("Current rate: ", speed div 1000, "kb/s")
+    client.onProgressChanged = onProgressChanged
+    discard client.getContent("http://speedtest-ams2.digitalocean.com/100mb.test")
+
+  client.close()
+
+  # Timeout test.
+  client = newHttpClient(timeout = 1)
+  try:
+    resp = client.request("http://example.com/")
+    doAssert false, "TimeoutError should have been raised."
+  except TimeoutError:
+    discard
+  except:
+    doAssert false, "TimeoutError should have been raised."
+
+syncTest()
+
+waitFor(asyncTest())
diff --git a/tests/stdlib/tmarshal.nim b/tests/stdlib/tmarshal.nim
index 4c0c10360..b05cb5a10 100644
--- a/tests/stdlib/tmarshal.nim
+++ b/tests/stdlib/tmarshal.nim
@@ -1,5 +1,7 @@
 discard """
-  output: '''{"age": 12, "name": "Cletus"}'''
+  output: '''{"age": 12, "bio": "\u042F Cletus", "blob": [65, 66, 67, 128], "name": "Cletus"}
+true
+true'''
 """
 
 import marshal
@@ -72,6 +74,12 @@ type
 
   Person = object of Entity
     age: int
+    bio: string
+    blob: string
 
-var instance1 = Person(name: "Cletus", age: 12)
+var instance1 = Person(name: "Cletus", age: 12,
+                       bio: "Я Cletus",
+                       blob: "ABC\x80")
 echo($$instance1)
+echo(to[Person]($$instance1).bio == instance1.bio)
+echo(to[Person]($$instance1).blob == instance1.blob)
diff --git a/tests/stdlib/tnet_ll.nim b/tests/stdlib/tnet_ll.nim
index 4d4df7c13..2ac272fd1 100644
--- a/tests/stdlib/tnet_ll.nim
+++ b/tests/stdlib/tnet_ll.nim
@@ -1,5 +1,8 @@
 discard """

   action: run

+  output: '''

+[Suite] inet_ntop tests

+'''

 """

 

 when defined(windows):

diff --git a/tests/stdlib/tparseuints.nim b/tests/stdlib/tparseuints.nim
index 5be3bcbd0..6b228d933 100644
--- a/tests/stdlib/tparseuints.nim
+++ b/tests/stdlib/tparseuints.nim
@@ -1,5 +1,7 @@
 discard """
   action: run
+  output: '''
+[Suite] parseutils'''
 """
 import unittest, strutils
 
diff --git a/tests/stdlib/ttime.nim b/tests/stdlib/ttime.nim
index ac37196fb..3ab287c4e 100644
--- a/tests/stdlib/ttime.nim
+++ b/tests/stdlib/ttime.nim
@@ -39,55 +39,49 @@ doAssert t4.format("M MM MMM MMMM") == "10 10 Oct October"
 doAssert((t4 - initInterval(years = 2)).format("yyyy") == "1995")
 doAssert((t4 - initInterval(years = 7, minutes = 34, seconds = 24)).format("yyyy mm ss") == "1990 24 10")
 
-var s = "Tuesday at 09:04am on Dec 15, 2015"
-var f = "dddd at hh:mmtt on MMM d, yyyy"
-doAssert($s.parse(f) == "Tue Dec 15 09:04:00 2015")
+proc parseTest(s, f, sExpected: string, ydExpected: int) =
+  let parsed = s.parse(f)
+  doAssert($parsed == sExpected)
+  doAssert(parsed.yearday == ydExpected)
+proc parseTestTimeOnly(s, f, sExpected: string) =
+  doAssert(sExpected in $s.parse(f))
+
+parseTest("Tuesday at 09:04am on Dec 15, 2015",
+    "dddd at hh:mmtt on MMM d, yyyy", "Tue Dec 15 09:04:00 2015", 348)
 # ANSIC       = "Mon Jan _2 15:04:05 2006"
-s = "Thu Jan 12 15:04:05 2006"
-f = "ddd MMM dd HH:mm:ss yyyy"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("Thu Jan 12 15:04:05 2006", "ddd MMM dd HH:mm:ss yyyy",
+    "Thu Jan 12 15:04:05 2006", 11)
 # UnixDate    = "Mon Jan _2 15:04:05 MST 2006"
-s = "Thu Jan 12 15:04:05 MST 2006"
-f = "ddd MMM dd HH:mm:ss ZZZ yyyy"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("Thu Jan 12 15:04:05 MST 2006", "ddd MMM dd HH:mm:ss ZZZ yyyy",
+    "Thu Jan 12 15:04:05 2006", 11)
 # RubyDate    = "Mon Jan 02 15:04:05 -0700 2006"
-s = "Thu Jan 12 15:04:05 -07:00 2006"
-f = "ddd MMM dd HH:mm:ss zzz yyyy"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("Mon Feb 29 15:04:05 -07:00 2016", "ddd MMM dd HH:mm:ss zzz yyyy",
+    "Mon Feb 29 15:04:05 2016", 59) # leap day
 # RFC822      = "02 Jan 06 15:04 MST"
-s = "12 Jan 16 15:04 MST"
-f = "dd MMM yy HH:mm ZZZ"
-doAssert($s.parse(f) == "Tue Jan 12 15:04:00 2016")
+parseTest("12 Jan 16 15:04 MST", "dd MMM yy HH:mm ZZZ",
+    "Tue Jan 12 15:04:00 2016", 11)
 # RFC822Z     = "02 Jan 06 15:04 -0700" # RFC822 with numeric zone
-s = "12 Jan 16 15:04 -07:00"
-f = "dd MMM yy HH:mm zzz"
-doAssert($s.parse(f) == "Tue Jan 12 15:04:00 2016")
+parseTest("01 Mar 16 15:04 -07:00", "dd MMM yy HH:mm zzz",
+    "Tue Mar  1 15:04:00 2016", 60) # day after february in leap year
 # RFC850      = "Monday, 02-Jan-06 15:04:05 MST"
-s = "Monday, 12-Jan-06 15:04:05 MST"
-f = "dddd, dd-MMM-yy HH:mm:ss ZZZ"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("Monday, 12-Jan-06 15:04:05 MST", "dddd, dd-MMM-yy HH:mm:ss ZZZ",
+    "Thu Jan 12 15:04:05 2006", 11)
 # RFC1123     = "Mon, 02 Jan 2006 15:04:05 MST"
-s = "Thu, 12 Jan 2006 15:04:05 MST"
-f = "ddd, dd MMM yyyy HH:mm:ss ZZZ"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("Sun, 01 Mar 2015 15:04:05 MST", "ddd, dd MMM yyyy HH:mm:ss ZZZ",
+    "Sun Mar  1 15:04:05 2015", 59) # day after february in non-leap year
 # RFC1123Z    = "Mon, 02 Jan 2006 15:04:05 -0700" # RFC1123 with numeric zone
-s = "Thu, 12 Jan 2006 15:04:05 -07:00"
-f = "ddd, dd MMM yyyy HH:mm:ss zzz"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("Thu, 12 Jan 2006 15:04:05 -07:00", "ddd, dd MMM yyyy HH:mm:ss zzz",
+    "Thu Jan 12 15:04:05 2006", 11)
 # RFC3339     = "2006-01-02T15:04:05Z07:00"
-s = "2006-01-12T15:04:05Z-07:00"
-f = "yyyy-MM-ddTHH:mm:ssZzzz"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
-f = "yyyy-MM-dd'T'HH:mm:ss'Z'zzz"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("2006-01-12T15:04:05Z-07:00", "yyyy-MM-ddTHH:mm:ssZzzz",
+    "Thu Jan 12 15:04:05 2006", 11)
+parseTest("2006-01-12T15:04:05Z-07:00", "yyyy-MM-dd'T'HH:mm:ss'Z'zzz",
+    "Thu Jan 12 15:04:05 2006", 11)
 # RFC3339Nano = "2006-01-02T15:04:05.999999999Z07:00"
-s = "2006-01-12T15:04:05.999999999Z-07:00"
-f = "yyyy-MM-ddTHH:mm:ss.999999999Zzzz"
-doAssert($s.parse(f) == "Thu Jan 12 15:04:05 2006")
+parseTest("2006-01-12T15:04:05.999999999Z-07:00",
+    "yyyy-MM-ddTHH:mm:ss.999999999Zzzz", "Thu Jan 12 15:04:05 2006", 11)
 # Kitchen     = "3:04PM"
-s = "3:04PM"
-f = "h:mmtt"
-doAssert "15:04:00" in $s.parse(f)
+parseTestTimeOnly("3:04PM", "h:mmtt", "15:04:00")
 #when not defined(testing):
 #  echo "Kitchen: " & $s.parse(f)
 #  var ti = timeToTimeInfo(getTime())
diff --git a/tests/template/ttemp_in_varargs.nim b/tests/template/ttemp_in_varargs.nim
new file mode 100644
index 000000000..be78e6ef2
--- /dev/null
+++ b/tests/template/ttemp_in_varargs.nim
@@ -0,0 +1,9 @@
+discard """
+  output: '''a'''
+"""
+
+# bug #4292
+
+template foo(s: string): string = s
+proc variadicProc*(v: varargs[string, foo]) = echo v[0]
+variadicProc("a")
diff --git a/tests/testament/backend.nim b/tests/testament/backend.nim
index 671b5c8b7..8f0961566 100644
--- a/tests/testament/backend.nim
+++ b/tests/testament/backend.nim
@@ -59,6 +59,7 @@ var
   thisMachine: MachineId
   thisCommit: CommitId
 
+{.experimental.}
 proc `()`(cmd: string{lit}): string = cmd.execProcess.string.strip
 
 proc getMachine*(db: DbConn): MachineId =
diff --git a/tests/testament/categories.nim b/tests/testament/categories.nim
index e534cc161..3ed2f2196 100644
--- a/tests/testament/categories.nim
+++ b/tests/testament/categories.nim
@@ -24,7 +24,7 @@ proc delNimCache() =
     echo "[Warning] could not delete: ", nimcacheDir
 
 proc runRodFiles(r: var TResults, cat: Category, options: string) =
-  template test(filename: expr): stmt =
+  template test(filename: untyped) =
     testSpec r, makeTest(rodfilesDir / filename, options, cat, actionRun)
 
   delNimCache()
@@ -46,18 +46,19 @@ proc runRodFiles(r: var TResults, cat: Category, options: string) =
   test "deada2"
   delNimCache()
 
-  # test method generation:
-  test "bmethods"
-  test "bmethods2"
-  delNimCache()
+  when false:
+    # test method generation:
+    test "bmethods"
+    test "bmethods2"
+    delNimCache()
 
-  # test generics:
-  test "tgeneric1"
-  test "tgeneric2"
-  delNimCache()
+    # test generics:
+    test "tgeneric1"
+    test "tgeneric2"
+    delNimCache()
 
 proc compileRodFiles(r: var TResults, cat: Category, options: string) =
-  template test(filename: expr): stmt =
+  template test(filename: untyped) =
     testSpec r, makeTest(rodfilesDir / filename, options, cat)
 
   delNimCache()
@@ -114,20 +115,20 @@ proc dllTests(r: var TResults, cat: Category, options: string) =
 # ------------------------------ GC tests -------------------------------------
 
 proc gcTests(r: var TResults, cat: Category, options: string) =
-  template testWithoutMs(filename: expr): stmt =
+  template testWithoutMs(filename: untyped) =
     testSpec r, makeTest("tests/gc" / filename, options, cat, actionRun)
     testSpec r, makeTest("tests/gc" / filename, options &
                   " -d:release", cat, actionRun)
     testSpec r, makeTest("tests/gc" / filename, options &
                   " -d:release -d:useRealtimeGC", cat, actionRun)
 
-  template testWithoutBoehm(filename: expr): stmt =
+  template testWithoutBoehm(filename: untyped) =
     testWithoutMs filename
     testSpec r, makeTest("tests/gc" / filename, options &
                   " --gc:markAndSweep", cat, actionRun)
     testSpec r, makeTest("tests/gc" / filename, options &
                   " -d:release --gc:markAndSweep", cat, actionRun)
-  template test(filename: expr): stmt =
+  template test(filename: untyped) =
     testWithoutBoehm filename
     when not defined(windows):
       # AR: cannot find any boehm.dll on the net, right now, so disabled
@@ -173,7 +174,7 @@ proc longGCTests(r: var TResults, cat: Category, options: string) =
 # ------------------------- threading tests -----------------------------------
 
 proc threadTests(r: var TResults, cat: Category, options: string) =
-  template test(filename: expr): stmt =
+  template test(filename: untyped) =
     testSpec r, makeTest("tests/threads" / filename, options, cat, actionRun)
     testSpec r, makeTest("tests/threads" / filename, options &
       " -d:release", cat, actionRun)
@@ -201,6 +202,14 @@ proc ioTests(r: var TResults, cat: Category, options: string) =
   testSpec c, makeTest("tests/system/helpers/readall_echo", options, cat)
   testSpec r, makeTest("tests/system/io", options, cat)
 
+# ------------------------- async tests ---------------------------------------
+proc asyncTests(r: var TResults, cat: Category, options: string) =
+  template test(filename: untyped) =
+    testSpec r, makeTest(filename, options, cat)
+    testSpec r, makeTest(filename, options & " -d:upcoming", cat)
+  for t in os.walkFiles("tests/async/t*.nim"):
+    test(t)
+
 # ------------------------- debugger tests ------------------------------------
 
 proc debuggerTests(r: var TResults, cat: Category, options: string) =
@@ -209,7 +218,7 @@ proc debuggerTests(r: var TResults, cat: Category, options: string) =
 # ------------------------- JS tests ------------------------------------------
 
 proc jsTests(r: var TResults, cat: Category, options: string) =
-  template test(filename: expr): stmt =
+  template test(filename: untyped) =
     testSpec r, makeTest(filename, options & " -d:nodejs", cat,
                          actionRun, targetJS)
     testSpec r, makeTest(filename, options & " -d:nodejs -d:release", cat,
@@ -220,14 +229,15 @@ proc jsTests(r: var TResults, cat: Category, options: string) =
   for testfile in ["exception/texceptions", "exception/texcpt1",
                    "exception/texcsub", "exception/tfinally",
                    "exception/tfinally2", "exception/tfinally3",
+                   "exception/tunhandledexc",
                    "actiontable/tactiontable", "method/tmultim1",
                    "method/tmultim3", "method/tmultim4",
                    "varres/tvarres0", "varres/tvarres3", "varres/tvarres4",
                    "varres/tvartup", "misc/tints", "misc/tunsignedinc"]:
     test "tests/" & testfile & ".nim"
 
-  for testfile in ["pure/strutils", "pure/json", "pure/random", "pure/times"]:
-    test "lib/" & testfile & ".nim"
+  for testfile in ["strutils", "json", "random", "times", "logging"]:
+    test "lib/pure/" & testfile & ".nim"
 
 # ------------------------- manyloc -------------------------------------------
 #proc runSpecialTests(r: var TResults, options: string) =
@@ -369,9 +379,8 @@ proc `&?.`(a, b: string): string =
 proc processCategory(r: var TResults, cat: Category, options: string, fileGlob: string = "t*.nim") =
   case cat.string.normalize
   of "rodfiles":
-    discard # Disabled for now
-    #compileRodFiles(r, cat, options)
-    #runRodFiles(r, cat, options)
+    when false: compileRodFiles(r, cat, options)
+    runRodFiles(r, cat, options)
   of "js":
     # XXX JS doesn't need to be special anymore
     jsTests(r, cat, options)
@@ -389,6 +398,8 @@ proc processCategory(r: var TResults, cat: Category, options: string, fileGlob:
     threadTests r, cat, options & " --threads:on"
   of "io":
     ioTests r, cat, options
+  of "async":
+    asyncTests r, cat, options
   of "lib":
     testStdlib(r, "lib/pure/*.nim", options, cat)
     testStdlib(r, "lib/packages/docutils/highlite", options, cat)
diff --git a/tests/testament/tester.nim b/tests/testament/tester.nim
index 83e59a6c1..74ac58927 100644
--- a/tests/testament/tester.nim
+++ b/tests/testament/tester.nim
@@ -334,6 +334,11 @@ proc testSpec(r: var TResults, test: TTest) =
 
     let exeCmd = (if isJsTarget: nodejs & " " else: "") & exeFile
     var (buf, exitCode) = execCmdEx(exeCmd, options = {poStdErrToStdOut})
+
+    # Treat all failure codes from nodejs as 1. Older versions of nodejs used
+    # to return other codes, but for us it is sufficient to know that it's not 0.
+    if exitCode != 0: exitCode = 1
+
     let bufB = if expected.sortoutput: makeDeterministic(strip(buf.string))
                else: strip(buf.string)
     let expectedOut = strip(expected.outp)
diff --git a/todo.txt b/todo.txt
index 106f2bb34..21bec6e27 100644
--- a/todo.txt
+++ b/todo.txt
@@ -53,7 +53,6 @@ Bugs
 - VM: ptr/ref T cannot work in general
 - blocks can "export" an identifier but the CCG generates {} for them ...
 - ConcreteTypes in a 'case' means we don't check for duplicated case branches
-- BUG: echo with template `$`*(info: TLineInfo): expr = toFileLineCol(info)
 
 
 GC
diff --git a/tools/dochack/dochack.nim b/tools/dochack/dochack.nim
new file mode 100644
index 000000000..79a0e7482
--- /dev/null
+++ b/tools/dochack/dochack.nim
@@ -0,0 +1,296 @@
+
+
+import karax
+
+proc findNodeWith(x: Element; tag, content: cstring): Element =
+  if x.nodeName == tag and x.textContent == content:
+    return x
+  for i in 0..<x.len:
+    let it = x[i]
+    let y = findNodeWith(it, tag, content)
+    if y != nil: return y
+  return nil
+
+proc clone(e: Element): Element {.importcpp: "#.cloneNode(true)", nodecl.}
+proc parent(e: Element): Element {.importcpp: "#.parentNode", nodecl.}
+proc markElement(x: Element) {.importcpp: "#.__karaxMarker__ = true", nodecl.}
+proc isMarked(x: Element): bool {.
+  importcpp: "#.hasOwnProperty('__karaxMarker__')", nodecl.}
+proc title(x: Element): cstring {.importcpp: "#.title", nodecl.}
+
+proc sort[T](x: var openArray[T]; cmp: proc(a, b: T): int) {.importcpp:
+  "#.sort(#)", nodecl.}
+
+proc parentWith(x: Element; tag: cstring): Element =
+  result = x.parent
+  while result.nodeName != tag:
+    result = result.parent
+    if result == nil: return nil
+
+proc extractItems(x: Element; items: var seq[Element]) =
+  if x == nil: return
+  if x.nodeName == "A":
+    items.add x
+  else:
+    for i in 0..<x.len:
+      let it = x[i]
+      extractItems(it, items)
+
+# HTML trees are so shitty we transform the TOC into a decent
+# data-structure instead and work on that.
+type
+  TocEntry = ref object
+    heading: Element
+    kids: seq[TocEntry]
+    sortId: int
+    doSort: bool
+
+proc extractItems(x: TocEntry; heading: cstring;
+                  items: var seq[Element]) =
+  if x == nil: return
+  if x.heading != nil and x.heading.textContent == heading:
+    for i in 0..<x.kids.len:
+      items.add x.kids[i].heading
+  else:
+    for i in 0..<x.kids.len:
+      let it = x.kids[i]
+      extractItems(it, heading, items)
+
+proc toHtml(x: TocEntry; isRoot=false): Element =
+  if x == nil: return nil
+  if x.kids.len == 0:
+    if x.heading == nil: return nil
+    return x.heading.clone
+  result = tree("DIV")
+  if x.heading != nil and not isMarked(x.heading):
+    result.add x.heading.clone
+  let ul = tree("UL")
+  if isRoot:
+    ul.setClass("simple simple-toc")
+  else:
+    ul.setClass("simple")
+  if x.dosort:
+    x.kids.sort(proc(a, b: TocEntry): int =
+      if a.heading != nil and b.heading != nil:
+        let x = a.heading.textContent
+        let y = b.heading.textContent
+        if x < y: return -1
+        if x > y: return 1
+        return 0
+      else:
+        # ensure sorting is stable:
+        return a.sortId - b.sortId
+    )
+  for k in x.kids:
+    let y = toHtml(k)
+    if y != nil:
+      ul.add tree("LI", y)
+  if ul.len != 0: result.add ul
+  if result.len == 0: result = nil
+
+proc containsWord(a, b: cstring): bool {.asmNoStackFrame.} =
+  {.emit: """
+     var escaped = `b`.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
+     return new RegExp("\\b" + escaped + "\\b").test(`a`);
+  """.}
+
+proc isWhitespace(text: cstring): bool {.asmNoStackFrame.} =
+  {.emit: """
+     return !/[^\s]/.test(`text`);
+  """.}
+
+proc isWhitespace(x: Element): bool =
+  x.nodeName == "#text" and x.textContent.isWhitespace or
+    x.nodeName == "#comment"
+
+proc toToc(x: Element; father: TocEntry) =
+  if x.nodeName == "UL":
+    let f = TocEntry(heading: nil, kids: @[], sortId: father.kids.len)
+    var i = 0
+    while i < x.len:
+      var nxt = i+1
+      while nxt < x.len and x[nxt].isWhitespace:
+        inc nxt
+      if nxt < x.len and x[i].nodeName == "LI" and x[i].len == 1 and
+          x[nxt].nodeName == "UL":
+        let e = TocEntry(heading: x[i][0], kids: @[], sortId: f.kids.len)
+        let it = x[nxt]
+        for j in 0..<it.len:
+          toToc(it[j], e)
+        f.kids.add e
+        i = nxt+1
+      else:
+        toToc(x[i], f)
+        inc i
+    father.kids.add f
+  elif isWhitespace(x):
+    discard
+  elif x.nodeName == "LI":
+    var idx: seq[int] = @[]
+    for i in 0 ..< x.len:
+      if not x[i].isWhitespace: idx.add i
+    if idx.len == 2 and x[idx[1]].nodeName == "UL":
+      let e = TocEntry(heading: x[idx[0]], kids: @[],
+                       sortId: father.kids.len)
+      let it = x[idx[1]]
+      for j in 0..<it.len:
+        toToc(it[j], e)
+      father.kids.add e
+    else:
+      for i in 0..<x.len:
+        toToc(x[i], father)
+  else:
+    father.kids.add TocEntry(heading: x, kids: @[],
+                             sortId: father.kids.len)
+
+proc tocul(x: Element): Element =
+  # x is a 'ul' element
+  result = tree("UL")
+  for i in 0..<x.len:
+    let it = x[i]
+    if it.nodeName == "LI":
+      result.add it.clone
+    elif it.nodeName == "UL":
+      result.add tocul(it)
+
+proc getSection(toc: Element; name: cstring): Element =
+  let sec = findNodeWith(toc, "A", name)
+  if sec != nil:
+    result = sec.parentWith("LI")
+
+proc uncovered(x: TocEntry): TocEntry =
+  if x.kids.len == 0 and x.heading != nil:
+    return if not isMarked(x.heading): x else: nil
+  result = TocEntry(heading: x.heading, kids: @[], sortId: x.sortId,
+                    doSort: x.doSort)
+  for i in 0..<x.kids.len:
+    let y = uncovered(x.kids[i])
+    if y != nil: result.kids.add y
+  if result.kids.len == 0: result = nil
+
+proc mergeTocs(orig, news: TocEntry): TocEntry =
+  result = uncovered(orig)
+  if result == nil:
+    result = news
+  else:
+    for i in 0..<news.kids.len:
+      result.kids.add news.kids[i]
+
+proc buildToc(orig: TocEntry; types, procs: seq[Element]): TocEntry =
+  var newStuff = TocEntry(heading: nil, kids: @[], doSort: true)
+  for t in types:
+    let c = TocEntry(heading: t.clone, kids: @[], doSort: true)
+    t.markElement()
+    for p in procs:
+      if not isMarked(p):
+        let xx = karax.getElementsByClass(p.parent, cstring"attachedType")
+        if xx.len == 1 and xx[0].textContent == t.textContent:
+          #kout(cstring"found ", p.nodeName)
+          let q = tree("A", text(p.title))
+          q.setAttr("href", p.getAttribute("href"))
+          c.kids.add TocEntry(heading: q, kids: @[])
+          p.markElement()
+    newStuff.kids.add c
+  result = mergeTocs(orig, newStuff)
+
+var alternative: Element
+
+proc togglevis(d: Element) =
+  asm """
+    if (`d`.style.display == 'none')
+      `d`.style.display = 'inline';
+    else
+      `d`.style.display = 'none';
+  """
+
+proc groupBy*(value: cstring) {.exportc.} =
+  let toc = getElementById("toc-list")
+  if alternative.isNil:
+    var tt = TocEntry(heading: nil, kids: @[])
+    toToc(toc, tt)
+    tt = tt.kids[0]
+
+    var types: seq[Element] = @[]
+    var procs: seq[Element] = @[]
+
+    extractItems(tt, "Types", types)
+    extractItems(tt, "Procs", procs)
+    extractItems(tt, "Converters", procs)
+    extractItems(tt, "Methods", procs)
+    extractItems(tt, "Templates", procs)
+    extractItems(tt, "Macros", procs)
+    extractItems(tt, "Iterators", procs)
+
+    let ntoc = buildToc(tt, types, procs)
+    let x = toHtml(ntoc, isRoot=true)
+    alternative = tree("DIV", x)
+  if value == "type":
+    replaceById("tocRoot", alternative)
+  else:
+    replaceById("tocRoot", tree("DIV"))
+  togglevis(getElementById"toc-list")
+
+var
+  db: seq[Element]
+  contents: seq[cstring]
+
+template normalize(x: cstring): cstring = x.toLower.replace("_", "")
+
+proc dosearch(value: cstring): Element =
+  if db.isNil:
+    var stuff: Element
+    {.emit: """
+    var request = new XMLHttpRequest();
+    request.open("GET", "theindex.html", false);
+    request.send(null);
+
+    var doc = document.implementation.createHTMLDocument("theindex");
+    doc.documentElement.innerHTML = request.responseText;
+
+    //parser=new DOMParser();
+    //doc=parser.parseFromString("<html></html>", "text/html");
+
+    `stuff` = doc.documentElement;
+    """.}
+    db = stuff.getElementsByClass"reference external"
+    contents = @[]
+    for ahref in db:
+      contents.add ahref.textContent.normalize
+  let ul = tree("UL")
+  result = tree("DIV")
+  result.setClass"search_results"
+  var matches: seq[(Element, int)] = @[]
+  let key = value.normalize
+  for i in 0..<db.len:
+    let c = contents[i]
+    if c.containsWord(key):
+      matches.add((db[i], -(30_000 - c.len)))
+    elif c.contains(key):
+      matches.add((db[i], c.len))
+  matches.sort do (a, b: auto) -> int:
+    a[1] - b[1]
+  for i in 0..min(<matches.len, 19):
+    ul.add(tree("LI", matches[i][0]))
+  if ul.len == 0:
+    result.add tree("B", text"no search results")
+  else:
+    result.add tree("B", text"search results")
+    result.add ul
+
+var oldtoc: Element
+var timer: Timeout
+
+proc search*() {.exportc.} =
+  proc wrapper() =
+    let elem = getElementById("searchInput")
+    let value = elem.value
+    if value != "":
+      if oldtoc.isNil:
+        oldtoc = getElementById("tocRoot")
+      let results = dosearch(value)
+      replaceById("tocRoot", results)
+    elif not oldtoc.isNil:
+      replaceById("tocRoot", oldtoc)
+
+  if timer != nil: clearTimeout(timer)
+  timer = setTimeout(wrapper, 400)
diff --git a/tools/dochack/karax.nim b/tools/dochack/karax.nim
new file mode 100644
index 000000000..d9619992b
--- /dev/null
+++ b/tools/dochack/karax.nim
@@ -0,0 +1,343 @@
+# Simple lib to write JS UIs
+
+import dom
+
+export dom.Element, dom.Event, dom.cloneNode, dom
+
+proc kout*[T](x: T) {.importc: "console.log", varargs.}
+  ## the preferred way of debugging karax applications.
+
+proc id*(e: Node): cstring {.importcpp: "#.id", nodecl.}
+proc `id=`*(e: Node; x: cstring) {.importcpp: "#.id = #", nodecl.}
+proc className*(e: Node): cstring {.importcpp: "#.className", nodecl.}
+proc `className=`*(e: Node; v: cstring) {.importcpp: "#.className = #", nodecl.}
+
+proc value*(e: Element): cstring {.importcpp: "#.value", nodecl.}
+proc `value=`*(e: Element; v: cstring) {.importcpp: "#.value = #", nodecl.}
+
+proc getElementsByClass*(e: Element; name: cstring): seq[Element] {.importcpp: "#.getElementsByClassName(#)", nodecl.}
+
+proc toLower*(x: cstring): cstring {.
+  importcpp: "#.toLowerCase()", nodecl.}
+proc replace*(x: cstring; search, by: cstring): cstring {.
+  importcpp: "#.replace(#, #)", nodecl.}
+
+type
+  EventHandler* = proc(ev: Event)
+  EventHandlerId* = proc(ev: Event; id: int)
+
+  Timeout* = ref object
+
+var document* {.importc.}: Document
+
+var
+  dorender: proc (): Element {.closure.}
+  drawTimeout: Timeout
+  currentTree: Element
+
+proc setRenderer*(renderer: proc (): Element) =
+  dorender = renderer
+
+proc setTimeout*(action: proc(); ms: int): Timeout {.importc, nodecl.}
+proc clearTimeout*(t: Timeout) {.importc, nodecl.}
+proc targetElem*(e: Event): Element = cast[Element](e.target)
+
+proc getElementById*(id: cstring): Element {.importc: "document.getElementById", nodecl.}
+
+proc getElementsByClassName*(cls: cstring): seq[Element] {.importc:
+  "document.getElementsByClassName", nodecl.}
+
+proc textContent*(e: Element): cstring {.
+  importcpp: "#.textContent", nodecl.}
+
+proc replaceById*(id: cstring; newTree: Node) =
+  let x = getElementById(id)
+  x.parentNode.replaceChild(newTree, x)
+  newTree.id = id
+
+proc equals(a, b: Node): bool =
+  if a.nodeType != b.nodeType: return false
+  if a.id != b.id: return false
+  if a.nodeName != b.nodeName: return false
+  if a.nodeType == TextNode:
+    if a.data != b.data: return false
+  elif a.childNodes.len != b.childNodes.len:
+    return false
+  if a.className != b.className:
+    # style differences are updated in place and we pretend
+    # it's still the same node
+    a.className = b.className
+    #return false
+  return true
+
+proc diffTree(parent, a, b: Node) =
+  if equals(a, b):
+    if a.nodeType != TextNode:
+      # we need to do this correctly in the presence of asyncronous
+      # DOM updates:
+      var i = 0
+      while i < a.childNodes.len and a.childNodes.len == b.childNodes.len:
+        diffTree(a, a.childNodes[i], b.childNodes[i])
+        inc i
+  elif parent == nil:
+    replaceById("ROOT", b)
+  else:
+    parent.replaceChild(b, a)
+
+proc dodraw() =
+  let newtree = dorender()
+  newtree.id = "ROOT"
+  if currentTree == nil:
+    currentTree = newtree
+    replaceById("ROOT", currentTree)
+  else:
+    diffTree(nil, currentTree, newtree)
+
+proc redraw*() =
+  # we buffer redraw requests:
+  if drawTimeout != nil:
+    clearTimeout(drawTimeout)
+  drawTimeout = setTimeout(dodraw, 30)
+
+proc tree*(tag: string; kids: varargs[Element]): Element =
+  result = document.createElement tag
+  for k in kids:
+    result.appendChild k
+
+proc tree*(tag: string; attrs: openarray[(string, string)];
+           kids: varargs[Element]): Element =
+  result = tree(tag, kids)
+  for a in attrs: result.setAttribute(a[0], a[1])
+
+proc text*(s: string): Element = cast[Element](document.createTextNode(s))
+proc text*(s: cstring): Element = cast[Element](document.createTextNode(s))
+proc add*(parent, kid: Element) =
+  if parent.nodeName == "TR" and (kid.nodeName == "TD" or kid.nodeName == "TH"):
+    let k = document.createElement("TD")
+    appendChild(k, kid)
+    appendChild(parent, k)
+  else:
+    appendChild(parent, kid)
+
+proc len*(x: Element): int {.importcpp: "#.childNodes.length".}
+proc `[]`*(x: Element; idx: int): Element {.importcpp: "#.childNodes[#]".}
+
+proc isInt*(s: cstring): bool {.asmNoStackFrame.} =
+  asm """
+    return s.match(/^[0-9]+$/);
+  """
+
+var
+  linkCounter: int
+
+proc link*(id: int): Element =
+  result = document.createElement("a")
+  result.setAttribute("href", "#")
+  inc linkCounter
+  result.setAttribute("id", $linkCounter & ":" & $id)
+
+proc link*(action: EventHandler): Element =
+  result = document.createElement("a")
+  result.setAttribute("href", "#")
+  addEventListener(result, "click", action)
+
+proc parseInt*(s: cstring): int {.importc, nodecl.}
+proc parseFloat*(s: cstring): float {.importc, nodecl.}
+proc split*(s, sep: cstring): seq[cstring] {.importcpp, nodecl.}
+
+proc startsWith*(a, b: cstring): bool {.importcpp: "startsWith", nodecl.}
+proc contains*(a, b: cstring): bool {.importcpp: "(#.indexOf(#)>=0)", nodecl.}
+proc substr*(s: cstring; start: int): cstring {.importcpp: "substr", nodecl.}
+proc substr*(s: cstring; start, length: int): cstring {.importcpp: "substr", nodecl.}
+
+#proc len*(s: cstring): int {.importcpp: "#.length", nodecl.}
+proc `&`*(a, b: cstring): cstring {.importcpp: "(# + #)", nodecl.}
+proc toCstr*(s: int): cstring {.importcpp: "((#)+'')", nodecl.}
+
+proc suffix*(s, prefix: cstring): cstring =
+  if s.startsWith(prefix):
+    result = s.substr(prefix.len)
+  else:
+    kout(cstring"bug! " & s & cstring" does not start with " & prefix)
+
+proc valueAsInt*(e: Element): int = parseInt(e.value)
+proc suffixAsInt*(s, prefix: cstring): int = parseInt(suffix(s, prefix))
+
+proc scrollTop*(e: Element): int {.importcpp: "#.scrollTop", nodecl.}
+proc offsetHeight*(e: Element): int {.importcpp: "#.offsetHeight", nodecl.}
+proc offsetTop*(e: Element): int {.importcpp: "#.offsetTop", nodecl.}
+
+template onImpl(s) {.dirty} =
+  proc wrapper(ev: Event) =
+    action(ev)
+    redraw()
+  addEventListener(e, s, wrapper)
+
+proc setOnclick*(e: Element; action: proc(ev: Event)) =
+  onImpl "click"
+
+proc setOnclick*(e: Element; action: proc(ev: Event; id: int)) =
+  proc wrapper(ev: Event) =
+    let id = ev.target.id
+    let a = id.split(":")
+    if a.len == 2:
+      action(ev, parseInt(a[1]))
+      redraw()
+    else:
+      kout(cstring("cannot deal with id "), id)
+  addEventListener(e, "click", wrapper)
+
+proc setOnfocuslost*(e: Element; action: EventHandler) =
+  onImpl "blur"
+
+proc setOnchanged*(e: Element; action: EventHandler) =
+  onImpl "change"
+
+proc setOnscroll*(e: Element; action: EventHandler) =
+  onImpl "scroll"
+
+proc select*(choices: openarray[string]): Element =
+  result = document.createElement("select")
+  var i = 0
+  for c in choices:
+    result.add tree("option", [("value", $i)], text(c))
+    inc i
+
+proc select*(choices: openarray[(int, string)]): Element =
+  result = document.createElement("select")
+  for c in choices:
+    result.add tree("option", [("value", $c[0])], text(c[1]))
+
+var radioCounter: int
+
+proc radio*(choices: openarray[(int, string)]): Element =
+  result = document.createElement("fieldset")
+  var i = 0
+  inc radioCounter
+  for c in choices:
+    let id = "radio_" & c[1] & $i
+    var kid = tree("input", [("type", "radio"),
+      ("id", id), ("name", "radio" & $radioCounter),
+      ("value", $c[0])])
+    if i == 0:
+      kid.setAttribute("checked", "checked")
+    var lab = tree("label", [("for", id)], text(c[1]))
+    kid.add lab
+    result.add kid
+    inc i
+
+proc tag*(name: string; id="", class=""): Element =
+  result = document.createElement(name)
+  if id.len > 0:
+    result.setAttribute("id", id)
+  if class.len > 0:
+    result.setAttribute("class", class)
+
+proc tdiv*(id="", class=""): Element = tag("div", id, class)
+proc span*(id="", class=""): Element = tag("span", id, class)
+
+proc th*(s: string): Element =
+  result = tag("th")
+  result.add text(s)
+
+proc td*(s: string): Element =
+  result = tag("td")
+  result.add text(s)
+
+proc td*(s: Element): Element =
+  result = tag("td")
+  result.add s
+
+proc td*(class: string; s: Element): Element =
+  result = tag("td")
+  result.add s
+  result.setAttribute("class", class)
+
+proc table*(class="", kids: varargs[Element]): Element =
+  result = tag("table", "", class)
+  for k in kids: result.add k
+
+proc tr*(kids: varargs[Element]): Element =
+  result = tag("tr")
+  for k in kids:
+    if k.nodeName == "TD" or k.nodeName == "TH":
+      result.add k
+    else:
+      result.add td(k)
+
+proc setClass*(e: Element; value: string) =
+  e.setAttribute("class", value)
+
+proc setAttr*(e: Element; key, value: cstring) =
+  e.setAttribute(key, value)
+
+proc getAttr*(e: Element; key: cstring): cstring {.
+  importcpp: "#.getAttribute(#)", nodecl.}
+
+proc realtimeInput*(id, val: string; changed: proc(value: cstring)): Element =
+  let oldElem = getElementById(id)
+  #if oldElem != nil: return oldElem
+  let newVal = if oldElem.isNil: val else: $oldElem.value
+  var timer: Timeout
+  proc wrapper() =
+    changed(getElementById(id).value)
+    redraw()
+  proc onkeyup(ev: Event) =
+    if timer != nil: clearTimeout(timer)
+    timer = setTimeout(wrapper, 400)
+  result = tree("input", [("type", "text"),
+    ("value", newVal),
+    ("id", id)])
+  result.addEventListener("keyup", onkeyup)
+
+proc ajax(meth, url: cstring; headers: openarray[(string, string)];
+          data: cstring;
+          cont: proc (httpStatus: int; response: cstring)) =
+  proc setRequestHeader(a, b: cstring) {.importc: "ajax.setRequestHeader".}
+  {.emit: """
+  var ajax = new XMLHttpRequest();
+  ajax.open(`meth`,`url`,true);""".}
+  for a, b in items(headers):
+    setRequestHeader(a, b)
+  {.emit: """
+  ajax.onreadystatechange = function(){
+    if(this.readyState == 4){
+      if(this.status == 200){
+        `cont`(this.status, this.responseText);
+      } else {
+        `cont`(this.status, this.statusText);
+      }
+    }
+  }
+  ajax.send(`data`);
+  """.}
+
+proc ajaxPut*(url: string; headers: openarray[(string, string)];
+          data: cstring;
+          cont: proc (httpStatus: int, response: cstring)) =
+  ajax("PUT", url, headers, data, cont)
+
+proc ajaxGet*(url: string; headers: openarray[(string, string)];
+          cont: proc (httpStatus: int, response: cstring)) =
+  ajax("GET", url, headers, nil, cont)
+
+{.push stackTrace:off.}
+
+proc setupErrorHandler*(useAlert=false) =
+  ## Installs an error handler that transforms native JS unhandled
+  ## exceptions into Nim based stack traces. If `useAlert` is false,
+  ## the error message it put into the console, otherwise `alert`
+  ## is called.
+  proc stackTraceAsCstring(): cstring = cstring(getStackTrace())
+  {.emit: """
+  window.onerror = function(msg, url, line, col, error) {
+    var x = "Error: " + msg + "\n" + `stackTraceAsCstring`()
+    if (`useAlert`)
+      alert(x);
+    else
+      console.log(x);
+    var suppressErrorAlert = true;
+    return suppressErrorAlert;
+  };""".}
+
+{.pop.}
diff --git a/tools/nimgrep.nim b/tools/nimgrep.nim
index e93168847..8dff722ec 100644
--- a/tools/nimgrep.nim
+++ b/tools/nimgrep.nim
@@ -11,7 +11,7 @@ import
   os, strutils, parseopt, pegs, re, terminal
 
 const
-  Version = "1.0"
+  Version = "1.1"
   Usage = "nimgrep - Nim Grep Utility Version " & Version & """
 
   (c) 2012 Andreas Rumpf
@@ -135,7 +135,7 @@ proc processFile(filename: string) =
   if optVerbose in options:
     stdout.writeLine(filename)
     stdout.flushFile()
-  var pegp: TPeg
+  var pegp: Peg
   var rep: Regex
   var result: string
 
@@ -161,7 +161,7 @@ proc processFile(filename: string) =
       t = findBounds(buffer, pegp, matches, i)
     else:
       t = findBounds(buffer, rep, matches, i)
-    if t.first <= 0: break
+    if t.first < 0: break
     inc(line, countLines(buffer, i, t.first-1))
 
     var wholeMatch = buffer.substr(t.first, t.last)
@@ -213,7 +213,7 @@ proc hasRightExt(filename: string, exts: seq[string]): bool =
     if os.cmpPaths(x, y) == 0: return true
 
 proc styleInsensitive(s: string): string =
-  template addx: stmt =
+  template addx =
     result.add(s[i])
     inc(i)
   result = ""
diff --git a/tools/niminst/buildsh.tmpl b/tools/niminst/buildsh.tmpl
index 13dfe5226..220ecdb7f 100644
--- a/tools/niminst/buildsh.tmpl
+++ b/tools/niminst/buildsh.tmpl
@@ -92,6 +92,7 @@ case $uos in
     ;;
   *haiku* )
     myos="haiku"
+    LINK_FLAGS="$LINK_FLAGS -lroot -lnetwork"
     ;;
   *)
     echo 2>&1 "Error: unknown operating system: $uos"
diff --git a/tools/niminst/niminst.nim b/tools/niminst/niminst.nim
index 4c8dfcddf..b63849a10 100644
--- a/tools/niminst/niminst.nim
+++ b/tools/niminst/niminst.nim
@@ -447,7 +447,8 @@ proc readCFiles(c: var ConfigData, osA, cpuA: int) =
           # HACK: we conditionally add ``-lm -ldl``, so remove them from the
           # linker flags:
           c.linker.flags = c.linker.flags.replaceWord("-lm").replaceWord(
-                           "-ldl").strip
+                           "-ldl").replaceWord("-lroot").replaceWord(
+                           "-lnetwork").strip
         else:
           if cmpIgnoreStyle(k.key, "libpath") == 0:
             c.libpath = k.value
@@ -616,9 +617,8 @@ when haveZipLib:
     else:
       quit("Cannot open for writing: " & n)
 
-proc xzDist(c: var ConfigData) =
+proc xzDist(c: var ConfigData; windowsZip=false) =
   let proj = toLower(c.name) & "-" & c.version
-  var n = "$#.tar.xz" % proj
   let tmpDir = if c.outdir.len == 0: "build" else: c.outdir
 
   template processFile(z, dest, src) =
@@ -635,15 +635,17 @@ proc xzDist(c: var ConfigData) =
   processFile(z, proj / makeFile, "build" / makeFile)
   processFile(z, proj / installShFile, installShFile)
   processFile(z, proj / deinstallShFile, deinstallShFile)
-  for f in walkFiles(c.libpath / "lib/*.h"):
-    processFile(z, proj / "c_code" / extractFilename(f), f)
-  for osA in 1..c.oses.len:
-    for cpuA in 1..c.cpus.len:
-      var dir = buildDir(osA, cpuA)
-      for k, f in walkDir("build" / dir):
-        if k == pcFile: processFile(z, proj / dir / extractFilename(f), f)
-
-  for cat in items({fcConfig..fcOther, fcUnix, fcNimble}):
+  if not windowsZip:
+    for f in walkFiles(c.libpath / "lib/*.h"):
+      processFile(z, proj / "c_code" / extractFilename(f), f)
+    for osA in 1..c.oses.len:
+      for cpuA in 1..c.cpus.len:
+        var dir = buildDir(osA, cpuA)
+        for k, f in walkDir("build" / dir):
+          if k == pcFile: processFile(z, proj / dir / extractFilename(f), f)
+
+  let osSpecific = if windowsZip: fcWindows else: fcUnix
+  for cat in items({fcConfig..fcOther, osSpecific, fcNimble}):
     echo("Current category: ", cat)
     for f in items(c.cat[cat]): processFile(z, proj / f, f)
 
@@ -655,10 +657,15 @@ proc xzDist(c: var ConfigData) =
     let oldDir = getCurrentDir()
     setCurrentDir(tmpDir)
     try:
-      if execShellCmd("XZ_OPT=-9 gtar Jcf $1.tar.xz $1 --exclude=.DS_Store" % proj) != 0:
-        # try old 'tar' without --exclude feature:
-        if execShellCmd("XZ_OPT=-9 tar Jcf $1.tar.xz $1" % proj) != 0:
+      if windowsZip:
+        if execShellCmd("7z a -tzip $1.zip $1" % proj) != 0:
           echo("External program failed")
+      else:
+        if execShellCmd("XZ_OPT=-9 gtar Jcf $1.tar.xz $1 --exclude=.DS_Store" %
+                        proj) != 0:
+          # try old 'tar' without --exclude feature:
+          if execShellCmd("XZ_OPT=-9 tar Jcf $1.tar.xz $1" % proj) != 0:
+            echo("External program failed")
     finally:
       setCurrentDir(oldDir)
 
@@ -724,10 +731,7 @@ if actionCSource in c.actions:
 if actionScripts in c.actions:
   writeInstallScripts(c)
 if actionZip in c.actions:
-  when haveZipLib:
-    zipDist(c)
-  else:
-    quit("libzip is not installed")
+  xzDist(c, true)
 if actionXz in c.actions:
   xzDist(c)
 if actionDeb in c.actions:
diff --git a/tools/niminst/nsis.tmpl b/tools/niminst/nsis.tmpl
index 0897d36a8..639a01b6b 100644
--- a/tools/niminst/nsis.tmpl
+++ b/tools/niminst/nsis.tmpl
@@ -11,10 +11,6 @@
   ; File Functions Header, used to get the current drive root.
   !include "FileFunc.nsh"
 
-  ; *Patched* Environment Variable Manipulation Header, used to add
-  ; tools to the user's PATH environment variable.
-  !include "EnvVarUpdate.nsh"
-
 ;--------------------------------
 ; Global variables and defines
   !define PRODUCT_NAME "?c.displayName"
@@ -35,7 +31,7 @@
 
   ; Default installation folder
   ; This is changed later (in .onInit) to the root directory, if possible.
-  InstallDir "$PROGRAMFILES?{when sizeof(int) == 8: "64" else: ""}\?{c.name}-?{c.version}"
+  InstallDir "$PROGRAMFILES?{when sizeof(int) == 8: "64" else: ""}\?{c.name}-?{c.version}\"
 
   ; Get installation folder from registry if available
   InstallDirRegKey HKCU "Software\c.name\c.version" ""
@@ -44,7 +40,7 @@
   RequestExecutionLevel user
 
   ; Allow installation to the root drive directory.
-  AllowRootDirInstall true
+  AllowRootDirInstall false
 
   ; Maximum compression!
   SetCompressor /SOLID /FINAL lzma
@@ -156,10 +152,14 @@
 
   ; Section for adding tools to the PATH variable
   Section "Setup Path Environment" PathSection
-     ${EnvVarUpdate} $R0 "PATH" "A" "HKCU" "$INSTDIR\dist\mingw"
-     ${EnvVarUpdate} $R0 "PATH" "A" "HKCU" "$INSTDIR\dist\mingw\bin"
-     ${EnvVarUpdate} $R0 "PATH" "A" "HKCU" "$INSTDIR\bin"
-     ${EnvVarUpdate} $R0 "PATH" "A" "HKCU" "$INSTDIR\dist\babel"
+    Push "$INSTDIR\bin"
+    Call AddToPath
+    Push "$INSTDIR\dist\mingw"
+    Call AddToPath
+    Push "$INSTDIR\dist\mingw\bin"
+    Call AddToPath
+    Push "$PROFILE\.nimble\bin"
+    Call AddToPath
   SectionEnd
 
   ; The downloadable sections. These sections are automatically generated by
@@ -243,10 +243,14 @@
     SetAutoClose true
 
     ; Remove entries from the PATH environment variable
-    ${un.EnvVarUpdate} $R0 "PATH" "R" "HKCU" "$INSTDIR\dist\mingw"
-    ${un.EnvVarUpdate} $R0 "PATH" "R" "HKCU" "$INSTDIR\dist\mingw\bin"
-    ${un.EnvVarUpdate} $R0 "PATH" "R" "HKCU" "$INSTDIR\bin"
-    ${un.EnvVarUpdate} $R0 "PATH" "R" "HKCU" "$INSTDIR\dist\babel"
+    Push "$INSTDIR\bin"
+    Call un.RemoveFromPath
+    Push "$INSTDIR\dist\mingw"
+    Call un.RemoveFromPath
+    Push "$INSTDIR\dist\mingw\bin"
+    Call un.RemoveFromPath
+    Push "$PROFILE\.nimble\bin"
+    Call un.RemoveFromPath
   SectionEnd
 
 ;--------------------------------
@@ -254,5 +258,188 @@
 
   Function .onInit
     ${GetRoot} "$EXEDIR" $R0
-    strCpy $INSTDIR "$R0\?{c.name}"
+    ;strCpy $INSTDIR "$R0\?{c.name}"
   FunctionEnd
+
+
+;--------------------------------------------------------------------
+; Path functions
+;
+; Based on example from:
+; http://nsis.sourceforge.net/Path_Manipulation
+;
+; Actually based on:
+; https://www.smartmontools.org/browser/trunk/smartmontools/os_win32/installer.nsi#L636
+
+
+!include "WinMessages.nsh"
+
+; Registry Entry for environment (NT4,2000,XP)
+; All users:
+;!define Environ 'HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"'
+; Current user only:
+!define Environ 'HKCU "Environment"'
+
+
+; AddToPath - Appends dir to PATH
+;   (does not work on Win9x/ME)
+;
+; Usage:
+;   Push "dir"
+;   Call AddToPath
+
+Function AddToPath
+  Exch $0
+  Push $1
+  Push $2
+  Push $3
+  Push $4
+
+  ; NSIS ReadRegStr returns empty string on string overflow
+  ; Native calls are used here to check actual length of PATH
+
+  ; $4 = RegOpenKey(HKEY_CURRENT_USER, "Environment", &$3)
+  System::Call "advapi32::RegOpenKey(i 0x80000001, t'Environment', *i.r3) i.r4"
+  IntCmp $4 0 0 done done
+  ; $4 = RegQueryValueEx($3, "PATH", (DWORD*)0, (DWORD*)0, &$1, ($2=NSIS_MAX_STRLEN, &$2))
+  ; RegCloseKey($3)
+  System::Call "advapi32::RegQueryValueEx(i $3, t'PATH', i 0, i 0, t.r1, *i ${NSIS_MAX_STRLEN} r2) i.r4"
+  System::Call "advapi32::RegCloseKey(i $3)"
+
+  IntCmp $4 234 0 +4 +4 ; $4 == ERROR_MORE_DATA
+    DetailPrint "AddToPath: original length $2 > ${NSIS_MAX_STRLEN}"
+    MessageBox MB_OK "PATH not updated, original length $2 > ${NSIS_MAX_STRLEN}"
+    Goto done
+
+  IntCmp $4 0 +5 ; $4 != NO_ERROR
+    IntCmp $4 2 +3 ; $4 != ERROR_FILE_NOT_FOUND
+      DetailPrint "AddToPath: unexpected error code $4"
+      Goto done
+    StrCpy $1 ""
+
+  ; Check if already in PATH
+  Push "$1;"
+  Push "$0;"
+  Call StrStr
+  Pop $2
+  StrCmp $2 "" 0 done
+  Push "$1;"
+  Push "$0\;"
+  Call StrStr
+  Pop $2
+  StrCmp $2 "" 0 done
+
+  ; Prevent NSIS string overflow
+  StrLen $2 $0
+  StrLen $3 $1
+  IntOp $2 $2 + $3
+  IntOp $2 $2 + 2 ; $2 = strlen(dir) + strlen(PATH) + sizeof(";")
+  IntCmp $2 ${NSIS_MAX_STRLEN} +4 +4 0
+    DetailPrint "AddToPath: new length $2 > ${NSIS_MAX_STRLEN}"
+    MessageBox MB_OK "PATH not updated, new length $2 > ${NSIS_MAX_STRLEN}."
+    Goto done
+
+  ; Append dir to PATH
+  DetailPrint "Add to PATH: $0"
+  StrCpy $2 $1 1 -1
+  StrCmp $2 ";" 0 +2
+    StrCpy $1 $1 -1 ; remove trailing ';'
+  StrCmp $1 "" +2   ; no leading ';'
+    StrCpy $0 "$1;$0"
+  WriteRegExpandStr ${Environ} "PATH" $0
+  SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
+
+done:
+  Pop $4
+  Pop $3
+  Pop $2
+  Pop $1
+  Pop $0
+FunctionEnd
+
+
+; RemoveFromPath - Removes dir from PATH
+;
+; Usage:
+;   Push "dir"
+;   Call RemoveFromPath
+
+Function un.RemoveFromPath
+  Exch $0
+  Push $1
+  Push $2
+  Push $3
+  Push $4
+  Push $5
+  Push $6
+
+  ReadRegStr $1 ${Environ} "PATH"
+  StrCpy $5 $1 1 -1
+  StrCmp $5 ";" +2
+    StrCpy $1 "$1;" ; ensure trailing ';'
+  Push $1
+  Push "$0;"
+  Call un.StrStr
+  Pop $2 ; pos of our dir
+  StrCmp $2 "" done
+
+  DetailPrint "Remove from PATH: $0"
+  StrLen $3 "$0;"
+  StrLen $4 $2
+  StrCpy $5 $1 -$4 ; $5 is now the part before the path to remove
+  StrCpy $6 $2 "" $3 ; $6 is now the part after the path to remove
+  StrCpy $3 "$5$6"
+  StrCpy $5 $3 1 -1
+  StrCmp $5 ";" 0 +2
+    StrCpy $3 $3 -1 ; remove trailing ';'
+  WriteRegExpandStr ${Environ} "PATH" $3
+  SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000
+
+done:
+  Pop $6
+  Pop $5
+  Pop $4
+  Pop $3
+  Pop $2
+  Pop $1
+  Pop $0
+FunctionEnd
+
+
+; StrStr - find substring in a string
+;
+; Usage:
+;   Push "this is some string"
+;   Push "some"
+;   Call StrStr
+;   Pop $0 ; "some string"
+
+!macro StrStr un
+Function ${un}StrStr
+  Exch $R1 ; $R1=substring, stack=[old$R1,string,...]
+  Exch     ;                stack=[string,old$R1,...]
+  Exch $R2 ; $R2=string,    stack=[old$R2,old$R1,...]
+  Push $R3
+  Push $R4
+  Push $R5
+  StrLen $R3 $R1
+  StrCpy $R4 0
+  ; $R1=substring, $R2=string, $R3=strlen(substring)
+  ; $R4=count, $R5=tmp
+  loop:
+    StrCpy $R5 $R2 $R3 $R4
+    StrCmp $R5 $R1 done
+    StrCmp $R5 "" done
+    IntOp $R4 $R4 + 1
+    Goto loop
+done:
+  StrCpy $R1 $R2 "" $R4
+  Pop $R5
+  Pop $R4
+  Pop $R3
+  Pop $R2
+  Exch $R1 ; $R1=old$R1, stack=[result,...]
+FunctionEnd
+!macroend
+!insertmacro StrStr ""
+!insertmacro StrStr "un."
diff --git a/tools/nimweb.nim b/tools/nimweb.nim
index 4cf7020c2..65af67216 100644
--- a/tools/nimweb.nim
+++ b/tools/nimweb.nim
@@ -13,6 +13,8 @@ import
 
 from xmltree import escape
 
+const gitRepo = "https://github.com/nim-lang/Nim"
+
 type
   TKeyValPair = tuple[key, id, val: string]
   TConfigData = object of RootObj
@@ -21,8 +23,6 @@ type
     authors, projectName, projectTitle, logo, infile, outdir, ticker: string
     vars: StringTableRef
     nimArgs: string
-    gitRepo: string
-    gitCommit: string
     quotations: Table[string, tuple[quote, author: string]]
     numProcessors: int # Set by parallelBuild:n, only works for values > 0.
     gaId: string  # google analytics ID, nil means analytics are disabled
@@ -59,8 +59,6 @@ proc initConfigData(c: var TConfigData) =
   c.logo = ""
   c.ticker = ""
   c.vars = newStringTable(modeStyleInsensitive)
-  c.gitRepo = "https://github.com/nim-lang/Nim/tree"
-  c.gitCommit = "master"
   c.numProcessors = countProcessors()
   # Attempts to obtain the git current commit.
   when false:
@@ -94,16 +92,17 @@ Compile_options:
   rYearMonthDay = r"(\d{4})_(\d{2})_(\d{2})"
   rssUrl = "http://nim-lang.org/news.xml"
   rssNewsUrl = "http://nim-lang.org/news.html"
-  sponsors = "web/sponsors.csv"
+  activeSponsors = "web/sponsors.csv"
+  inactiveSponsors = "web/inactive_sponsors.csv"
   validAnchorCharacters = Letters + Digits
 
 
-macro id(e: expr): expr {.immediate.} =
+macro id(e: untyped): untyped =
   ## generates the rss xml ``id`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "id")
 
-macro updated(e: expr): expr {.immediate.} =
+macro updated(e: varargs[untyped]): untyped =
   ## generates the rss xml ``updated`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "updated")
@@ -114,12 +113,12 @@ proc updatedDate(year, month, day: string): string =
     repeat("0", 2 - len(month)) & month,
     repeat("0", 2 - len(day)) & day])
 
-macro entry(e: expr): expr {.immediate.} =
+macro entry(e: varargs[untyped]): untyped =
   ## generates the rss xml ``entry`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "entry")
 
-macro content(e: expr): expr {.immediate.} =
+macro content(e: varargs[untyped]): untyped =
   ## generates the rss xml ``content`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "content", reqAttr = "type")
@@ -244,11 +243,6 @@ proc parseIniFile(c: var TConfigData) =
     c.projectName = changeFileExt(extractFilename(c.infile), "")
   if c.outdir.len == 0:
     c.outdir = splitFile(c.infile).dir
-  # Ugly hack to override git command output when building private repo.
-  if c.vars.hasKey("githash"):
-    let githash = c.vars["githash"].strip
-    if githash.len > 0:
-      c.gitCommit = githash
 
 # ------------------- main ----------------------------------------------------
 
@@ -302,18 +296,18 @@ proc buildDoc(c: var TConfigData, destPath: string) =
     commands = newSeq[string](len(c.doc) + len(c.srcdoc) + len(c.srcdoc2))
     i = 0
   for d in items(c.doc):
-    commands[i] = findNim() & " rst2html $# --docSeeSrcUrl:$#/$#/$# -o:$# --index:on $#" %
-      [c.nimArgs, c.gitRepo, c.gitCommit, d.pathPart,
+    commands[i] = findNim() & " rst2html $# --git.url:$# -o:$# --index:on $#" %
+      [c.nimArgs, gitRepo,
       destPath / changeFileExt(splitFile(d).name, "html"), d]
     i.inc
   for d in items(c.srcdoc):
-    commands[i] = findNim() & " doc $# --docSeeSrcUrl:$#/$#/$# -o:$# --index:on $#" %
-      [c.nimArgs, c.gitRepo, c.gitCommit, d.pathPart,
+    commands[i] = findNim() & " doc $# --git.url:$# -o:$# --index:on $#" %
+      [c.nimArgs, gitRepo,
       destPath / changeFileExt(splitFile(d).name, "html"), d]
     i.inc
   for d in items(c.srcdoc2):
-    commands[i] = findNim() & " doc2 $# --docSeeSrcUrl:$#/$#/$# -o:$# --index:on $#" %
-      [c.nimArgs, c.gitRepo, c.gitCommit, d.pathPart,
+    commands[i] = findNim() & " doc2 $# --git.url:$# -o:$# --index:on $#" %
+      [c.nimArgs, gitRepo,
       destPath / changeFileExt(splitFile(d).name, "html"), d]
     i.inc
 
@@ -345,8 +339,8 @@ proc buildAddDoc(c: var TConfigData, destPath: string) =
   # build additional documentation (without the index):
   var commands = newSeq[string](c.webdoc.len)
   for i, doc in pairs(c.webdoc):
-    commands[i] = findNim() & " doc2 $# --docSeeSrcUrl:$#/$# -o:$# $#" %
-      [c.nimArgs, c.gitRepo, c.gitCommit,
+    commands[i] = findNim() & " doc2 $# --git.url:$# -o:$# $#" %
+      [c.nimArgs, gitRepo,
       destPath / changeFileExt(splitFile(doc).name, "html"), doc]
   mexec(commands, c.numProcessors)
 
@@ -446,8 +440,9 @@ proc readSponsors(sponsorsFile: string): seq[Sponsor] =
         since: parser.row[5], level: parser.row[6].parseInt))
   parser.close()
 
-proc buildSponsors(c: var TConfigData, sponsorsFile: string, outputDir: string) =
-  let sponsors = generateSponsors(readSponsors(sponsorsFile))
+proc buildSponsors(c: var TConfigData, outputDir: string) =
+  let sponsors = generateSponsorsPage(readSponsors(activeSponsors),
+                                      readSponsors(inactiveSponsors))
   let outFile = outputDir / "sponsors.html"
   var f: File
   if open(f, outFile, fmWrite):
@@ -500,7 +495,7 @@ proc buildWebsite(c: var TConfigData) =
     buildPage(c, file, if file == "question": "FAQ" else: file, rss)
   copyDir("web/assets", "web/upload/assets")
   buildNewsRss(c, "web/upload")
-  buildSponsors(c, sponsors, "web/upload")
+  buildSponsors(c, "web/upload")
   buildNews(c, "web/news", "web/upload/news")
 
 proc main(c: var TConfigData) =
@@ -518,8 +513,8 @@ proc json2(c: var TConfigData) =
   var i = 0
   for d in items(c.srcdoc2):
     createDir(destPath / splitFile(d).dir)
-    commands[i] = findNim() & " jsondoc2 $# --docSeeSrcUrl:$#/$#/$# -o:$# --index:on $#" %
-      [c.nimArgs, c.gitRepo, c.gitCommit, d.pathPart,
+    commands[i] = findNim() & " jsondoc2 $# --git.url:$# -o:$# --index:on $#" %
+      [c.nimArgs, gitRepo,
       destPath / changeFileExt(d, "json"), d]
     i.inc
 
diff --git a/tools/website.tmpl b/tools/website.tmpl
index cf2c72a60..2801fea96 100644
--- a/tools/website.tmpl
+++ b/tools/website.tmpl
@@ -66,7 +66,7 @@
             </a>
           </div>
           <div id="slide1" class="niaslide">
-            <a href="news.html#Z2016-01-27-nim-in-action-is-now-available">
+            <a href="news/2016_01_27_nim_in_action_is_now_available.html">
               <img src="${rootDir}assets/niminaction/banner.jpg" alt="New in Manning Early Access Program: Nim in Action!"/>
             </a>
           </div>
@@ -180,8 +180,8 @@ runForever()
 				<div id="foot-links">
 					<div>
 						<h4>Documentation</h4>
-						<a href="documentation.html">Stable Documentation</a>
-						<a href="learn.html">Learning Resources</a>
+						<a href="${rootDir}documentation.html">Stable Documentation</a>
+						<a href="${rootDir}learn.html">Learning Resources</a>
 					<!--	<a href="">Development Documentation</a> -->
 						<a href="https://github.com/nim-lang/nim">Issues &amp; Requests</a>
 					</div>
@@ -218,14 +218,9 @@ runForever()
 </html>
 #end proc
 #
+#
 #proc generateSponsors(sponsors: seq[Sponsor]): string =
 #result = ""
-<h1 id="our-current-sponsors">Our Current Sponsors</h1>
-<p>This page lists the companies and individuals that are, very kindly, contributing a
-monthly amount to help sustain Nim's development. For more details take a
-look at the <a href="https://salt.bountysource.com/teams/nim">Bountysource campaign</a>.</p>
-<p class="lastUpdate">Last updated: ${getTime().getGMTime().format("dd/MM/yyyy")}</p>
-<dl>
 #for sponsor in sponsors:
   <dt class="level-${sponsor.level}">
     #if sponsor.url.len > 0:
@@ -248,6 +243,24 @@ look at the <a href="https://salt.bountysource.com/teams/nim">Bountysource campa
     Donated $$${sponsor.allTime} in total since ${sponsor.since}
   </dd>
 #end for
+#end proc
+#proc generateSponsorsPage(activeSponsors, inactiveSponsors: seq[Sponsor]): string =
+#result = ""
+<h1 id="our-current-sponsors">Our Current Sponsors</h1>
+<p>This section lists the companies and individuals that are, very kindly, contributing a
+monthly amount to help sustain Nim's development. For more details take a
+look at the <a href="https://salt.bountysource.com/teams/nim">Bountysource campaign</a>.</p>
+<p class="lastUpdate">Last updated: ${getTime().getGMTime().format("dd/MM/yyyy")}</p>
+<dl>
+${generateSponsors(activeSponsors)}
+</dl>
+#
+<h1 id="our-past-sponsors">Our Past Sponsors</h1>
+<p>This section lists the companies and individuals that have contributed
+money in the past to help sustain Nim's development. For more details take a
+look at the <a href="https://salt.bountysource.com/teams/nim">Bountysource campaign</a>.</p>
+<dl>
+${generateSponsors(inactiveSponsors)}
 </dl>
 #
 #end proc
diff --git a/web/assets/news/images/0.15.0/doc_search.gif b/web/assets/news/images/0.15.0/doc_search.gif
new file mode 100644
index 000000000..ac757b404
--- /dev/null
+++ b/web/assets/news/images/0.15.0/doc_search.gif
Binary files differdiff --git a/web/assets/news/images/0.15.0/doc_sort.gif b/web/assets/news/images/0.15.0/doc_sort.gif
new file mode 100644
index 000000000..edd253c4a
--- /dev/null
+++ b/web/assets/news/images/0.15.0/doc_sort.gif
Binary files differdiff --git a/web/assets/news/images/survey/10_needs.png b/web/assets/news/images/survey/10_needs.png
new file mode 100644
index 000000000..67d568552
--- /dev/null
+++ b/web/assets/news/images/survey/10_needs.png
Binary files differdiff --git a/web/assets/news/images/survey/book.png b/web/assets/news/images/survey/book.png
new file mode 100644
index 000000000..5bb418e63
--- /dev/null
+++ b/web/assets/news/images/survey/book.png
Binary files differdiff --git a/web/assets/news/images/survey/book_opinion.png b/web/assets/news/images/survey/book_opinion.png
new file mode 100644
index 000000000..4e56ab26e
--- /dev/null
+++ b/web/assets/news/images/survey/book_opinion.png
Binary files differdiff --git a/web/assets/news/images/survey/breakage.png b/web/assets/news/images/survey/breakage.png
new file mode 100644
index 000000000..5eb4c5289
--- /dev/null
+++ b/web/assets/news/images/survey/breakage.png
Binary files differdiff --git a/web/assets/news/images/survey/difficulty_fixing_breakage.png b/web/assets/news/images/survey/difficulty_fixing_breakage.png
new file mode 100644
index 000000000..022aa00ed
--- /dev/null
+++ b/web/assets/news/images/survey/difficulty_fixing_breakage.png
Binary files differdiff --git a/web/assets/news/images/survey/domains.png b/web/assets/news/images/survey/domains.png
new file mode 100644
index 000000000..50b1ed7ff
--- /dev/null
+++ b/web/assets/news/images/survey/domains.png
Binary files differdiff --git a/web/assets/news/images/survey/ex_nim.png b/web/assets/news/images/survey/ex_nim.png
new file mode 100644
index 000000000..50082ea8b
--- /dev/null
+++ b/web/assets/news/images/survey/ex_nim.png
Binary files differdiff --git a/web/assets/news/images/survey/languages.png b/web/assets/news/images/survey/languages.png
new file mode 100644
index 000000000..db35f9bd4
--- /dev/null
+++ b/web/assets/news/images/survey/languages.png
Binary files differdiff --git a/web/assets/news/images/survey/learning_resources.png b/web/assets/news/images/survey/learning_resources.png
new file mode 100644
index 000000000..39f533ad0
--- /dev/null
+++ b/web/assets/news/images/survey/learning_resources.png
Binary files differdiff --git a/web/assets/news/images/survey/nim_appeal.png b/web/assets/news/images/survey/nim_appeal.png
new file mode 100644
index 000000000..4f53e1447
--- /dev/null
+++ b/web/assets/news/images/survey/nim_appeal.png
Binary files differdiff --git a/web/assets/news/images/survey/nim_displeasing.png b/web/assets/news/images/survey/nim_displeasing.png
new file mode 100644
index 000000000..b7232df04
--- /dev/null
+++ b/web/assets/news/images/survey/nim_displeasing.png
Binary files differdiff --git a/web/assets/news/images/survey/nim_domains.png b/web/assets/news/images/survey/nim_domains.png
new file mode 100644
index 000000000..2d8fc6652
--- /dev/null
+++ b/web/assets/news/images/survey/nim_domains.png
Binary files differdiff --git a/web/assets/news/images/survey/nimble_opinion.png b/web/assets/news/images/survey/nimble_opinion.png
new file mode 100644
index 000000000..3fe76326e
--- /dev/null
+++ b/web/assets/news/images/survey/nimble_opinion.png
Binary files differdiff --git a/web/assets/news/images/survey/non_user.png b/web/assets/news/images/survey/non_user.png
new file mode 100644
index 000000000..b5324b69c
--- /dev/null
+++ b/web/assets/news/images/survey/non_user.png
Binary files differdiff --git a/web/assets/news/images/survey/planning_to_use_at_work.png b/web/assets/news/images/survey/planning_to_use_at_work.png
index be3a50467..b3e2001c3 100644
--- a/web/assets/news/images/survey/planning_to_use_at_work.png
+++ b/web/assets/news/images/survey/planning_to_use_at_work.png
Binary files differdiff --git a/web/assets/news/images/survey/project_size_nim_rust.png b/web/assets/news/images/survey/project_size_nim_rust.png
index 41e3ec8b1..4bc0e6b47 100644
--- a/web/assets/news/images/survey/project_size_nim_rust.png
+++ b/web/assets/news/images/survey/project_size_nim_rust.png
Binary files differdiff --git a/web/assets/news/images/survey/upgrades_broke_things.png b/web/assets/news/images/survey/upgrades_broke_things.png
deleted file mode 100644
index 28a8ee3f0..000000000
--- a/web/assets/news/images/survey/upgrades_broke_things.png
+++ /dev/null
Binary files differdiff --git a/web/assets/style.css b/web/assets/style.css
index af32fad07..2e166530d 100644
--- a/web/assets/style.css
+++ b/web/assets/style.css
@@ -516,12 +516,11 @@ pre .end { background:url("images/tabEnd.png") no-repeat left bottom; }
       padding:5px 30px;
       margin-bottom:20px;
       border:8px solid rgba(0,0,0,.8);
-      border-right-width:16px;
+      border-right-width:0;
       border-top-width:0;
       border-bottom-width:0;
       border-radius:3px;
-      background:rgba(0,0,0,0.1);
-      box-shadow:1px 3px 12px rgba(0,0,0,.4); }
+      background:rgba(0,0,0,0.1); }
     .standout h2 { margin-bottom:10px; padding-bottom:10px; border-bottom:1px dashed rgba(0,0,0,.8); }
     .standout li { margin:0 !important; padding-top:10px; border-top:1px dashed rgba(0,0,0,.2); }
     .standout ul { padding-bottom:5px; }
@@ -611,6 +610,15 @@ p.lastUpdate {
   color: #6d6d6d;
 }
 
+/* quotes */
+
+blockquote {
+  padding: 0px 8px;
+  margin: 10px 0px;
+  border-left: 2px solid rgb(61, 61, 61);
+  color: rgb(109, 109, 109);
+}
+
 /* News articles */
 
 .metadata {
diff --git a/web/bountysource.nim b/web/bountysource.nim
index a4f76417e..1d47cea56 100644
--- a/web/bountysource.nim
+++ b/web/bountysource.nim
@@ -29,12 +29,6 @@ proc newBountySource(team, token: string): BountySource =
   result.client.headers["Referer"] = "https://salt.bountysource.com/teams/nim/admin/supporters"
   result.client.headers["Origin"] = "https://salt.bountysource.com/"
 
-proc getSupportLevels(self: BountySource): Future[JsonNode] {.async.} =
-  let response = await self.client.get(apiUrl &
-    "/support_levels?supporters_for_team=" & self.team)
-  doAssert response.status.startsWith($Http200) # TODO: There should be a ==
-  return parseJson(response.body)
-
 proc getSupporters(self: BountySource): Future[JsonNode] {.async.} =
   let response = await self.client.get(apiUrl &
     "/supporters?order=monthly&per_page=200&team_slug=" & self.team)
@@ -47,26 +41,21 @@ proc getGithubUser(username: string): Future[JsonNode] {.async.} =
   if response.status.startsWith($Http200):
     return parseJson(response.body)
   else:
+    echo("Could not get Github user: ", username, ". ", response.status)
     return nil
 
-proc processLevels(supportLevels: JsonNode) =
-  var before = supportLevels.elems.len
-  supportLevels.elems.keepIf(
-    item => item["status"].getStr == "active" and
-      item["owner"]["display_name"].getStr != "Anonymous"
+proc processSupporters(supporters: JsonNode) =
+  var before = supporters.elems.len
+  supporters.elems.keepIf(
+    item => item["display_name"].getStr != "Anonymous"
   )
-  echo("Found ", before - supportLevels.elems.len, " sponsors that cancelled or didn't pay.")
-  echo("Found ", supportLevels.elems.len, " active sponsors!")
+  echo("Discarded ", before - supporters.elems.len, " anonymous sponsors.")
+  echo("Found ", supporters.elems.len, " named sponsors.")
 
-  supportLevels.elems.sort(
-    (x, y) => cmp(y["amount"].getFNum, x["amount"].getFNum)
+  supporters.elems.sort(
+    (x, y) => cmp(y["alltime_amount"].getFNum, x["alltime_amount"].getFNum)
   )
 
-proc getSupporter(supporters: JsonNode, displayName: string): JsonNode =
-  for supporter in supporters:
-    if supporter["display_name"].getStr == displayName:
-      return supporter
-  doAssert false
 
 proc quote(text: string): string =
   if {' ', ','} in text:
@@ -81,7 +70,7 @@ proc getLevel(amount: float): int =
     if amount.int <= i:
       result = i
 
-proc writeCsv(sponsors: seq[Sponsor]) =
+proc writeCsv(sponsors: seq[Sponsor], filename="sponsors.new.csv") =
   var csv = ""
   csv.add "logo, name, url, this_month, all_time, since, level\n"
   for sponsor in sponsors:
@@ -91,7 +80,8 @@ proc writeCsv(sponsors: seq[Sponsor]) =
       $sponsor.allTime.int, sponsor.since.format("MMM d, yyyy").quote,
       $sponsor.amount.getLevel
     ]
-  writeFile("sponsors.new.csv", csv)
+  writeFile(filename, csv)
+  echo("Written csv file to ", filename)
 
 when isMainModule:
   if paramCount() == 0:
@@ -105,14 +95,13 @@ when isMainModule:
 
   echo("Getting sponsors...")
   let supporters = waitFor bountysource.getSupporters()
-
-  var supportLevels = waitFor bountysource.getSupportLevels()
-  processLevels(supportLevels)
+  processSupporters(supporters)
 
   echo("Generating sponsors list... (please be patient)")
-  var sponsors: seq[Sponsor] = @[]
-  for supportLevel in supportLevels:
-    let name = supportLevel["owner"]["display_name"].getStr
+  var activeSponsors: seq[Sponsor] = @[]
+  var inactiveSponsors: seq[Sponsor] = @[]
+  for supporter in supporters:
+    let name = supporter["display_name"].getStr
     var url = ""
     let ghUser = waitFor getGithubUser(name)
     if not ghUser.isNil:
@@ -124,21 +113,28 @@ when isMainModule:
     if url.len > 0 and not url.startsWith("http"):
       url = "http://" & url
 
-    let amount = supportLevel["amount"].getFNum
+    let amount = supporter["monthly_amount"].getFNum()
     # Only show URL when user donated at least $5.
     if amount < 5:
       url = ""
 
-    let supporter = getSupporter(supporters, supportLevel["owner"]["display_name"].getStr)
+    #let supporter = getSupporter(supporters,
+    #                             supportLevel["owner"]["display_name"].getStr)
+    #if supporter.isNil: continue
     var logo = ""
     if amount >= 75:
       discard # TODO
 
-    sponsors.add(Sponsor(name: name, url: url, logo: logo, amount: amount,
-      allTime: supporter["alltime_amount"].getFNum(),
-      since: parse(supporter["created_at"].getStr, "yyyy-MM-dd'T'hh:mm:ss")
-    ))
-
-  echo("Generated ", sponsors.len, " sponsors")
-  writeCsv(sponsors)
-  echo("Written csv file to sponsors.new.csv")
+    let sponsor = Sponsor(name: name, url: url, logo: logo, amount: amount,
+        allTime: supporter["alltime_amount"].getFNum(),
+        since: parse(supporter["created_at"].getStr, "yyyy-MM-dd'T'hh:mm:ss")
+      )
+    if supporter["monthly_amount"].getFNum > 0.0:
+      activeSponsors.add(sponsor)
+    else:
+      inactiveSponsors.add(sponsor)
+
+  echo("Generated ", activeSponsors.len, " active sponsors")
+  echo("Generated ", inactiveSponsors.len, " inactive sponsors")
+  writeCsv(activeSponsors)
+  writeCsv(inactiveSponsors, "inactive_sponsors.new.csv")
diff --git a/web/download.rst b/web/download.rst
index 6593a928c..cf0841577 100644
--- a/web/download.rst
+++ b/web/download.rst
@@ -3,22 +3,17 @@ Download the compiler
 
 You can download the latest version of the Nim compiler here.
 
-**Note:** The Nim compiler requires a C compiler to compile software. On
-Windows we recommend that you use
-`Mingw-w64 <http://mingw-w64.sourceforge.net/>`_. GCC is recommended on Linux
-and Clang on Mac.
-
-
 Binaries
 --------
 
-Unfortunately, right now we only provide binaries for Windows. You can download
-an installer for both 32 bit and 64 bit versions of Windows below.
+Right now binaries are only provided for Windows. You can download
+an installer for both 32 bit and 64 bit versions of Windows below. These
+installers have everything you need to use Nim, including a C compiler.
 
-* | 32 bit: `nim-0.14.2_x32.exe <download/nim-0.14.2_x32.exe>`_
-  | SHA-256  ca2de37759006d95db98732083a6fab20151bb9819186af2fa29d41884df78c9
-* | 64 bit: `nim-0.14.2_x64.exe <download/nim-0.14.2_x64.exe>`_
-  | SHA-256  1fec054d3a5f54c0a67a40db615bb9ecb1d56413b19e324244110713bd4337d1
+* | 32 bit: `nim-0.15.0_x32.exe <download/nim-0.15.0_x32.exe>`_
+  | SHA-256  0ca8931e3369735bbafdf93de98a8fd0f425870f1173845e7601922a5e00c3c2
+* | 64 bit: `nim-0.15.0_x64.exe <download/nim-0.15.0_x64.exe>`_
+  | SHA-256  7bb9321cd9fb2860d36ee9b248e0202d7d4e36e2272a2f128fbce96fd4a9bfd6
 
 These installers also include Aporia, Nimble and other useful Nim tools to get
 you started with Nim development!
@@ -26,14 +21,18 @@ you started with Nim development!
 Installation based on generated C code
 --------------------------------------
 
-This installation method is the preferred way for Linux, Mac OS X, and other Unix
-like systems. Binary packages may be provided later.
+**Note:** The Nim compiler requires a C compiler to compile software. On
+Windows we recommend that you use
+`Mingw-w64 <http://mingw-w64.sourceforge.net/>`_. GCC is recommended on Linux
+and Clang on Mac. The Windows installers above already includes a C compiler.
 
+This installation method is the preferred way for Linux, Mac OS X, and other Unix
+like systems.
 
 Firstly, download this archive:
 
-* | `nim-0.14.2.tar.xz (4.5MB) <download/nim-0.14.2.tar.xz>`_
-  | SHA-256  8f8d38d70ed57164795fc55e19de4c11488fcd31dbe42094e44a92a23e3f5e92
+* | `nim-0.15.0.tar.xz (4.5MB) <download/nim-0.15.0.tar.xz>`_
+  | SHA-256  c514535050b2b2156147bbe6e23aafe07cd996b2afa2c81fa9a09e1cd8c669fb
 
 Extract the archive. Then copy the extracted files into your chosen installation
 directory, ideally somewhere in your home directory.
@@ -45,6 +44,7 @@ Now open a terminal and follow these instructions:
 ``cd ~/programs/nim``.
 * run ``sh build.sh``.
 * Add ``$your_install_dir/bin`` to your PATH.
+* To build associated tools like ``nimble`` and ``nimsuggest`` run ``nim e install_tools.nims``.
 
 After restarting your terminal, you should be able to run ``nim -v``
 which should show you the version of Nim you just installed.
@@ -70,9 +70,9 @@ directory where you would like the download to take place.
 The following commands can be used to download the current development branch
 and then to build it::
 
-  git clone git://github.com/nim-lang/Nim.git
+  git clone https://github.com/nim-lang/Nim.git
   cd Nim
-  git clone --depth 1 git://github.com/nim-lang/csources
+  git clone --depth 1 https://github.com/nim-lang/csources
   cd csources && sh build.sh
   cd ..
   bin/nim c koch
@@ -86,7 +86,7 @@ Docker Hub
 ----------
 
 The `official Docker images <https://hub.docker.com/r/nimlang/nim/>`_
-are published Docker Hub and include the compiler and Nimble. There are images
+are published on Docker Hub and include the compiler and Nimble. There are images
 for standalone scripts as well as Nimble packages.
 
 Get the latest stable image::
diff --git a/web/inactive_sponsors.csv b/web/inactive_sponsors.csv
new file mode 100644
index 000000000..d466f3f31
--- /dev/null
+++ b/web/inactive_sponsors.csv
@@ -0,0 +1,50 @@
+logo, name, url, this_month, all_time, since, level
+,bogen,,0,1010,"Jul 23, 2016",1
+,mikra,,0,400,"Apr 28, 2016",1
+,linkmonitor,,0,180,"Jan 28, 2016",1
+,avsej,,0,110,"Jun 10, 2016",1
+,WilRubin,,0,100,"Aug 11, 2015",1
+,"Benny Luypaert",,0,100,"Apr 10, 2016",1
+,"Chris Heller",,0,100,"May 19, 2016",1
+,PhilipWitte,,0,100,"Aug 5, 2016",1
+,Boxifier,,0,75,"Apr 12, 2016",1
+,iolloyd,,0,75,"Apr 29, 2016",1
+,rb01,,0,50,"May 4, 2016",1
+,TedSinger,,0,45,"Apr 9, 2016",1
+,martinbbjerregaard,,0,35,"Jun 9, 2016",1
+,RationalG,,0,30,"Jun 17, 2016",1
+,benbve,,0,30,"Jul 12, 2016",1
+,barcharcraz,,0,25,"Jun 2, 2016",1
+,"Landon Bass",,0,25,"Jun 7, 2016",1
+,jimrichards,,0,25,"Jun 8, 2016",1
+,jjzazuet,,0,25,"Jul 10, 2016",1
+,moigagoo,,0,20,"May 13, 2016",1
+,kteza1,,0,20,"Jun 10, 2016",1
+,tomkeus,,0,20,"Sep 4, 2016",1
+,mirek,,0,15,"Apr 9, 2016",1
+,DateinAsia,,0,15,"Jul 30, 2016",1
+,rickc,,0,15,"Jul 31, 2016",1
+,jpkx1984,,0,13,"Jul 11, 2016",1
+,vlkrav,,0,12,"Aug 9, 2015",1
+,tebanep,,0,12,"Aug 7, 2016",1
+,McSpiros,,0,10,"Apr 6, 2016",1
+,"Brandon Hunter",,0,10,"Apr 7, 2016",1
+,funny-falcon,,0,10,"Apr 7, 2016",1
+,teroz,,0,10,"Apr 8, 2016",1
+,iLikeLego,,0,10,"Apr 16, 2016",1
+,Angluca,,0,10,"May 3, 2016",1
+,calind,,0,10,"Jun 7, 2016",1
+,goldenreign,,0,10,"Jun 10, 2016",1
+,Blumenversand,,0,10,"Jul 21, 2016",1
+,cinnabardk,,0,10,"Aug 6, 2016",1
+,reddec,,0,10,"Aug 31, 2016",1
+,niv,,0,5,"Apr 6, 2016",1
+,goniz,,0,5,"Apr 7, 2016",1
+,genunix,,0,5,"Apr 12, 2016",1
+,CynepHy6,,0,5,"Apr 14, 2016",1
+,ivanflorentin,,0,5,"May 3, 2016",1
+,stevenyhw,,0,5,"May 20, 2016",1
+,"Sanjay Singh",,0,5,"Jun 6, 2016",1
+,yuttie,,0,5,"Jun 7, 2016",1
+,hron,,0,5,"Jun 11, 2016",1
+,laszlowaty,,0,5,"Jun 17, 2016",1
diff --git a/web/news.rst b/web/news.rst
index 95822a459..f819c384c 100644
--- a/web/news.rst
+++ b/web/news.rst
@@ -2,6 +2,12 @@
 News
 ====
 
+`2016-09-30 Nim Version 0.15.0 released <news/2016_09_00_version_0_15_0_released.html>`_
+===================================
+
+`2016-09-03 Nim Community Survey results <news/2016_09_03_nim_community_survey_results.html>`_
+===================================
+
 `2016-08-06 BountySource Update: The Road to v1.0 <news/2016_08_06_bountysource_update_the_road_to_v10.html>`_
 ===================================
 
diff --git a/web/news/2016_09_03_nim_community_survey_results.rst b/web/news/2016_09_03_nim_community_survey_results.rst
new file mode 100644
index 000000000..106dce0e4
--- /dev/null
+++ b/web/news/2016_09_03_nim_community_survey_results.rst
@@ -0,0 +1,699 @@
+Nim Community Survey Results
+============================
+
+.. container:: metadata
+
+  Posted by Dominik Picheta on 3 September 2016
+
+We have recently closed the 2016 Nim Community Survey. I am happy to
+say that we have received exactly 790 responses, huge thanks go to the people
+that took the time to respond. We're incredibly thankful for this very valuable
+feedback.
+
+This survey was inspired in part by the
+`2016 State of Rust <https://blog.rust-lang.org/2016/06/30/State-of-Rust-Survey-2016.html>`_
+survey. You will note that many of the questions were modelled after
+Rust's survey. One of the reasons for doing this was to allow us to easily
+compare our results against the results obtained in the Rust survey. In
+addition, we of course also liked many of their questions.
+
+Our survey ran from the 23rd of June 2016 until the 8th of August 2016. The
+response numbers are impressive considering Nim's community size; at 790 they
+make up just over 25% of the Rust survey's responses.
+
+The goal of this survey was to primarily determine how our community is using
+Nim, in order to better understand how we should be improving it. In particular,
+we wanted to know what people feel is missing from Nim in the lead up to
+version 1.0. We have also asked our respondents about how well the Nim tools
+worked, the challenges of adopting Nim, the resources that they used to learn
+Nim and more.
+
+It is my hope that we will be able to run a similar survey in a years time,
+doing so should give us an idea of whether we are improving.
+With these general facts in mind, let's begin looking at specific questions.
+
+How did you find out about Nim?
+-------------------------------
+
+The rationale for the first question was simple, we wanted to know where our
+respondents found out about Nim. This is an interesting question for us, as
+we do occassionally get users asking us why it took so long for them to hear
+about Nim. It allows us to see how effective each website is at spreading the
+word about Nim.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_found.png">
+    <img src="../assets/news/images/survey/nim_found.png" alt="How did you find out about Nim?" style="width:100%"/>
+  </a>
+
+The majority of our respondents found Nim via Reddit, HackerNews or a search
+engine such as Google. These results are not altogether surprising. There were
+also a lot of "Other" responses, some of which were a bit more
+interesting. These included multiple mentions of habrahabr.ru, Dr. Dobb's,
+and lobste.rs.
+
+Do you use Nim?
+---------------
+
+Just like the Rust survey creators, we wanted to ensure that our survey was
+open to both Nim users as well people who never used Nim. In addition to
+those two groups, we have also included a third group of people: ex-Nim
+users. All three are interesting, for many different reasons.
+Nim users can tell us how they are using Nim and also how Nim's
+tooling can improve. Ex-Nim users give us an
+idea of why they stopped using Nim. Finally, respondents who never used Nim
+can tell us the reasons for not adopting it.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/do_you_use_nim.png">
+    <img src="../assets/news/images/survey/do_you_use_nim.png" alt="Do you use Nim?" style="width:100%"/>
+  </a>
+
+It's nice to see that we have such a good range of respondents. The Rust survey
+had a much larger number of Rust users amongst their respondents, with
+no distinction between users that never used Rust and users that stopped using
+Rust.
+
+Should we consider your answers to be invalid?
+----------------------------------------------
+
+This was something I thought would be interesting to have, after I saw it
+being used in another survey. While it does pinpoint possibly
+invalid respondents, I have opted against filtering those out. Mainly because
+that would require re-creating each of the charts generated by Google Forms
+manually.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/reliability.png">
+    <img src="../assets/news/images/survey/reliability.png" alt="Should we consider your answers to be invalid?" style="width:100%"/>
+  </a>
+
+According to the responses to this question, around 94% of our responses
+can be considered reliable.
+
+Nim users
+---------
+
+The following questions were answered only by the 38.9% of our respondents
+who identified themselves as Nim users.
+
+How long have you been using Nim?
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_time.png">
+    <img src="../assets/news/images/survey/nim_time.png" alt="How long have you been using Nim?" style="width:100%"/>
+  </a>
+
+A large proportion of our Nim users were new. This is good news as it means that
+our community is growing, with a large proportion of new Nim users that could
+become long-term Nimians. In total, more than 35% of Nim users can be considered
+new having used Nim for less than 3 months. With 18% of Nim users that can
+be considered very new having used Nim for less than a month.
+This could suggest that 18% of our users have only just found out about Nim in
+the last week or so and have not yet got the chance to use it extensively.
+
+The high percentages of long term Nim users are encouraging.
+They suggest
+that many users are continuing to use Nim after making it through the first
+few months. The sharp drop at 7-9 months is interesting, but may simply be
+due to the fact that there were fewer newcomers during that period, or it
+could be because our respondents are more likely to estimate that they have
+been using Nim for a year or half a year rather than the awkward 7-9 months.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_time_rust.png">
+    <img src="../assets/news/images/survey/nim_time_rust.png" alt="Time using Nim and Rust" style="width:100%"/>
+  </a>
+
+The results for Nim and Rust are actually remarkably similar. They both show a
+drop at 7-9 months, although Rust's isn't as dramatic. Nim on the other hand
+has a significantly higher percentage of new Nim users.
+
+Do you use Nim at work?
+~~~~~~~~~~~~~~~~~~~~~~~
+
+An important aspect of a language's adoption is whether it is being used for
+"real" work. We wanted to know how many people are using Nim in their day
+jobs and under what circumstances it is used.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_at_work.png">
+    <img src="../assets/news/images/survey/nim_at_work.png" alt="Do you use Nim at work?" style="width:100%"/>
+  </a>
+
+While a vast majority of our users are not using Nim at work, more than 25%
+of them are. It's encouraging to see such a high number already, even before
+we have released version 1.0. In fact, this percentage is likely close to 30%,
+because many of the "Other" responses mention using Nim for the likes of
+internal tools or small scripts to help with the respondent's work.
+
+.. raw::html
+
+  <a href="https://blog.rust-lang.org/images/2016-06-Survey/rust_at_work.png">
+    <img src="https://blog.rust-lang.org/images/2016-06-Survey/rust_at_work.png" alt="Do you use Rust at work?" style="width:100%"/>
+  </a>
+
+Interestingly, a larger percentage of Nim users are using Nim at work than
+Rust users. The sample sizes are of course vastly different, but it's still an
+interesting result. Combined, nearly 1/5th of Rust users are using Rust
+commercially whereas more than a quarter of Nim users are using Nim
+commercially.
+
+Approximately how large are all the Nim projects that you work on?
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Finding out how large the Nim projects worked on by Nim users are is also
+very valuable.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/project_size.png">
+    <img src="../assets/news/images/survey/project_size.png" alt="Nim project size for all users" style="width:100%"/>
+  </a>
+
+This shows us that currently Nim is primarily being used for small scripts and
+applications, with nearly 60% of the projects consisting of less than 1,000
+lines of code. This makes sense as many of our users are not using Nim
+professionally, but are doing so in their spare time.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/project_size_work.png">
+    <img src="../assets/news/images/survey/project_size_work.png" alt="Nim project size for work users" style="width:100%"/>
+  </a>
+
+The numbers for part-time and full-time work users of Nim tell a different
+story. Over 70% of the projects written by full-time users are between 10,001
+and 100,000 lines of code. Part-time users show a slightly different trend,
+with many more small projects, the majority being between 1,000 and
+10,000 lines of code.
+
+Overall it's good to see that there is a few large projects out there which are
+composed of more than 100,000 lines of code. We expect to see the amount of
+large projects to grow with time, especially with version 1.0 on the way.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/project_size_nim_rust.png">
+    <img src="../assets/news/images/survey/project_size_nim_rust.png" alt="Nim project size for work users (Nim vs. Rust)" style="width:100%"/>
+  </a>
+
+In comparison to Rust the proportion of project sizes for full-time users is
+vastly different. This is likely due to our small sample size. Project sizes for
+part-time users between Rust and Nim are somewhat similar, with differences of
+around 10% for each project size.
+
+Do you plan to try to use Nim at work?
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/planning_to_use_at_work.png">
+    <img src="../assets/news/images/survey/planning_to_use_at_work.png" alt="Planning to use Nim at work?" style="width:100%"/>
+  </a>
+
+It's also encouraging to see that over 50% of Nim users are planning to use
+Nim at work! This is slightly more than Rust's 40% and should help Nim's
+adoption into even more areas.
+
+Nim and its tools
+~~~~~~~~~~~~~~~~~
+
+In this section of the survey, we wanted to find out the tools that Nim
+users are utilising when developing Nim applications.
+
+What editor(s) do you use when writing Nim?
+___________________________________________
+
+Programmers are very specific when it comes to their editor of choice, because
+of that it's good to know which editor is most popular among our community.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/editors.png">
+    <img src="../assets/news/images/survey/editors.png" alt="Editors used by Nim users" style="width:100%"/>
+  </a>
+
+Looks like Vim is the winner with almost 30%. Followed by Sublime Text and
+Emacs. Aporia, the Nim IDE, gets a respectable 15.5%. There was
+also more than
+17% of answers which included "Other" editors, such as: Notepad++, Geany, gedit,
+and Kate.
+
+What operating system(s) do you compile for and run your Nim projects on?
+_________________________________________________________________________
+
+This question gave us information about the most popular target operating
+systems, as well as some of the more obscure ones. We have asked this question
+to find out the platforms on which Nim applications run on most frequently.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/target_os.png">
+    <img src="../assets/news/images/survey/target_os.png" alt="Target operating systems" style="width:100%"/>
+  </a>
+
+This question allowed multiple choices, so each percentage is out of the total
+number of respondents for this question. For example, 80.7% of the
+respondents selected "Linux" but only 26.6% selected OS X.
+
+This makes Linux by far the most popular target for Nim applications.
+Some "Other" targets included: BSD (OpenBSD, FreeBSD), iOS, Android, and
+JavaScript.
+It's great to see Nim being used on such a wide variety of platforms.
+
+What operating system(s) do you develop Nim projects on?
+________________________________________________________
+
+With this question, we wanted to know what operating systems are used for
+development.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/dev_os.png">
+    <img src="../assets/news/images/survey/dev_os.png" alt="Development operating systems" style="width:100%"/>
+  </a>
+
+This question also allowed multiple choices and ended up with very similar
+results.
+
+You can see that Linux is also the most popular developmental
+platform for Nim. But it's more popular as a target platform.
+
+Which version(s) of Nim do you use for your applications?
+_________________________________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_versions.png">
+    <img src="../assets/news/images/survey/nim_versions.png" alt="Version use" style="width:100%"/>
+  </a>
+
+At the time of this survey, version 0.14.2 was the latest stable release.
+It's no wonder that it is the most commonly used release of Nim. It's good to
+see that the older versions are not used as often. The high use of ``Git HEAD (devel)``
+(nightly builds) isn't surprising, Nim is still evolving rapidly and our
+release schedule is not regular or frequent.
+
+Once we go past the 1.0 release, we expect to see much less use of the unstable
+``devel`` branch.
+
+Has upgrading to a new version of the Nim compiler broken your code?
+____________________________________________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/breakage.png">
+    <img src="../assets/news/images/survey/breakage.png" alt="Breakage" style="width:100%"/>
+  </a>
+
+Despite the unstable nature of Nim in the lead up to version 1.0, whenever
+we make breaking changes we do our best to deprecate things and ensure that
+old code continues to work for our users. Of course sometimes this is not
+possible and other times it is simply easier to add a breaking change.
+
+This question was asked to determine how much our user base is affected by
+breaking changes between Nim versions. We decided to have three possible
+answers for this question in order to give us an idea how frequent the
+breakage was.
+
+It's incredible to see that over 50% of our users have not experienced any
+breakage after upgrading. We expect this number to increase significantly
+after version 1.0 is released. Of the users that did experience breakage,
+over 80% of them said that it was a rare occurrence.
+
+In comparison to Rust, our results show that there was a higher percentage of
+users experiencing breakage as a result of an upgrade. This is to be expected,
+because Nim is still in its pre-1.0 period, whereas Rust 1.0 has been released
+over a year ago now.
+
+Unfortunately while we are still in this pre-1.0 period, releases will likely
+introduce breaking changes as we refine certain aspects of Nim such as its
+standard library, so the number of users experiencing breaking changes may
+increase.
+
+If so, how much work did it take to fix it?
+___________________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/difficulty_fixing_breakage.png">
+    <img src="../assets/news/images/survey/difficulty_fixing_breakage.png" alt="difficulty fixing breakage" style="width:100%"/>
+  </a>
+
+Thankfully most of the breakage experienced by Nim users was very easy to fix.
+
+
+If you used Nimble, do you like it?
+___________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nimble_opinion.png">
+    <img src="../assets/news/images/survey/nimble_opinion.png" alt="Do you like Nimble?" style="width:100%"/>
+  </a>
+
+Nimble is the Nim package manager, a tool that is very important in Nim's
+ecosystem as it allows developers to easily install dependencies for their
+software.
+
+The majority of respondents rated it as a 4, showing us that the majority does
+like Nimble. With over 55% rating it a 4 or 5. This percentage isn't as
+overwhelming as the 94.1% of users that rated Cargo a 4 or 5 in the Rust
+survey. Based on these results I think that we definitely need to do a
+better job with Nimble.
+
+In our next survey, it might be a good idea to ask more questions about Nimble
+to determine how exactly it can be improved.
+
+What aspects of Nim do you find most appealing?
+_______________________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_appeal.png">
+    <img src="../assets/news/images/survey/nim_appeal.png" alt="What aspects of Nim do you find most appealing?" style="width:100%"/>
+  </a>
+
+We were interested to know the features of Nim that appeal most to our users.
+More than 80% of our respondents selected "Execution Speed" as one of the
+features that appeal to them. With "Development Speed" and "Readability"
+tying for second place and "Metaprogramming" at third place.
+
+The options given to our respondents are rather predictable,
+they do show us which of these features have the highest appeal though.
+What's more interesting are the "Other" answers.
+
+By far the most popular "Other" answer was related to Nim's compilation to C.
+Many users mentioned that they like how easy it is to interface with C
+libraries and the great portability that compiling to C offers.
+
+What aspects of Nim do you find most displeasing?
+_________________________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/nim_displeasing.png">
+    <img src="../assets/news/images/survey/nim_displeasing.png" alt="What aspects of Nim do you find most displeasing?" style="width:100%"/>
+  </a>
+
+It was only natural to ask this question. The results are almost perfectly
+opposite to the previous question's answers, with almost 50% of respondents
+selecting "Debugging Tools"
+as the most displeasing aspect of Nim. With "Documentation" and "Testing Tools"
+in second and third place respectively. There is also a much larger number of
+"Other" answers to this question.
+
+The "Other" answers for this question vary a lot. Here is a selection of
+them, ordered by frequency:
+
+* Small community size.
+* Lack of in-depth tutorials.
+* Quality of error messages.
+* Forward declarations and no cyclic imports.
+* Bugs in the standard library.
+* No good IDE.
+* No REPL.
+* No major version.
+* Bugs in the compiler.
+* Lack of libraries.
+* Difficulty installing on Windows.
+* Non-intuitive semantics of various constructs.
+* Lack of immutable collections.
+* Async/await not being production ready.
+* Lack of shared collections for threads.
+* No Haxe target.
+* Memory safety.
+
+We hope that we can improve these things with time. Many of these issues are
+already being worked on, including the removal of the need for forward
+declarations. Some of these issues like our small community size are difficult
+to fix, but we will nonetheless do our best.
+
+
+Previous Nim users
+~~~~~~~~~~~~~~~~~~
+
+For users that have used Nim before but decided against using it, we asked just
+one specific question. The proportion of our respondents that answered it
+was 24%.
+
+Why did you stop using Nim?
+___________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/ex_nim.png">
+    <img src="../assets/news/images/survey/ex_nim.png" alt="I stopped using Nim because..." style="width:100%"/>
+  </a>
+
+Again, this question got a lot of "Other" answers. Apart from that, the
+most popular reason for leaving Nim is that it is not stable. Followed by the
+a lack of needed libraries and packages and the instability of the
+standard library.
+
+* Lack of IDE support.
+* Style insensitive.
+* Documentation.
+* Dislike the syntax.
+* Community is too small.
+* Missing language features (for example RAII).
+* No opportunities to use it at work.
+* Messy standard library.
+
+The first item, "Lack of IDE support", was mentioned by multiple respondents.
+In the future we should look into ensuring that major IDEs have plugins which
+enable easy Nim development.
+
+Based on some of the "Other" answers, it seems that many of the respondents
+have not used Nim for very long, for example many respondents complained about
+installation issues which they would have run into before getting a chance to
+use Nim. Because of this I would consider them not
+ex-Nim users but developers that have not had a chance to try Nim fully.
+Next time we should also ask how long the respondent has used Nim for to get a
+better idea of whether they had a chance to use Nim for extended periods of
+time.
+
+Non-Nim users
+~~~~~~~~~~~~~
+
+We also wanted to know the reasons why developers decided against using Nim.
+
+Why do you not use Nim?
+_______________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/non_user.png">
+    <img src="../assets/news/images/survey/non_user.png" alt="I don't use Nim because..." style="width:100%"/>
+  </a>
+
+The most common reason that people have for not using Nim is that it is
+not yet ready for production. Thankfully this will improve with time.
+IDE support is also a prominent factor just as we've seen in previous results.
+
+There is also a lot of "Other" answers, let's have a look at a selection of
+them. Some of the most prominent ones, in order of frequency, include:
+
+* No time to use/learn it
+* Syntax
+* Documentation is incomplete
+* Garbage Collection
+* Prefer functional paradigm
+* Small community
+* Style insensitivity/Case insensitivity
+
+One respondent made a very good suggestion: they said that the
+"Do you use Nim?" question should have included "No, but I intend to" as
+an answer. Definitely something we will do in the next survey. Indeed, many
+respondents mentioned that they were planning on trying out Nim but that they
+just have no time to do so, this is very encouraging!
+
+Learning Resources
+~~~~~~~~~~~~~~~~~~
+
+We wanted to get an idea of how Nim users are learning Nim. Every respondent
+answered this question, no matter what they answered for the "Do you use Nim?"
+question.
+
+Which learning resources, if any, did you use to learn Nim?
+___________________________________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/learning_resources.png">
+    <img src="../assets/news/images/survey/learning_resources.png" alt="learning resources" style="width:100%"/>
+  </a>
+
+The idea behind this question was to understand which learning resources
+were most popular among our user base. The
+`Nim tutorial <http://nim-lang.org/docs/tut1.html>`_ is by far the most
+popular. In previous questions, we saw respondents mentioning that the Nim
+tutorial does not go into enough detail about Nim. Thanks to this information
+we can come to the conclusion that the tutorial needs to be improved
+significantly to make sure that it gives our users the necessary information
+to use Nim effectively.
+
+Indeed, many users also use the
+`Nim manual <http://nim-lang.org/docs/manual.html>`_ to learn Nim.
+This manual has been
+written as a specification and so is not ideal for teaching Nim. Many of
+the concepts in the Nim manual need to be explained in a lot more detail in
+the Nim tutorial.
+
+Of course, it's exciting to see our respondents using other materials to learn
+Nim. In particular I am excited to see that over 15% of the respondents have
+used
+`Nim in Action <https://manning.com/books/nim-in-action?a_aid=niminaction&a_bid=78a27e81>`_
+to learn Nim. I expect that more and more users will pick up the book after it
+is fully published.
+
+Nim in Action
+_____________
+
+As the author of
+`Nim in Action <https://manning.com/books/nim-in-action?a_aid=niminaction&a_bid=78a27e81>`_,
+I wanted to get some statistics surrounding
+my book. With this in mind, I have created some questions relating to it.
+
+Have you read Nim in Action?
+____________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/book.png">
+    <img src="../assets/news/images/survey/book.png" alt="Have you read Nim in Action?" style="width:100%"/>
+  </a>
+
+It's good to see that over 50% of respondents have read the book or are at least
+planning to read it. Keep in mind that this question was answered by all
+respondents, not just Nim users.
+
+.. container:: standout
+
+  Are you interested in purchasing a copy of
+  `Nim in Action <https://manning.com/books/nim-in-action?a_aid=niminaction&a_bid=78a27e81>`_?
+  If so, you can use code ``wm090416lt`` to get 50% off the printed book today only!
+  If you purchase it now you will get access to an early access copy of
+  Nim in Action in eBook form and will be able to take part in the development
+  of this book.
+
+Did you enjoy Nim in Action?
+____________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/book_opinion.png">
+    <img src="../assets/news/images/survey/book_opinion.png" alt="Did you enjoy Nim in Action?" style="width:100%"/>
+  </a>
+
+Of the people that read Nim in Action it's nice to see that almost 70% have
+enjoyed it.
+
+Nim's future
+~~~~~~~~~~~~
+
+What improvements are needed before Nim v1.0 can be released?
+_____________________________________________________________
+
+We were interested to know what our users believe is needed before
+Nim version 1.0 can be released.
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/10_needs.png">
+    <img src="../assets/news/images/survey/10_needs.png" alt="What is needed before 1.0 can be released?" style="width:100%"/>
+  </a>
+
+It appears that the standard library is the biggest concern. With more than half
+of all respondents selecting "The standard library needs to reviewed and
+any problems with it fixed". This is in fact something we are already planning
+to address, so it's good to see that the majority agrees with us.
+
+A large proportion of users also believes that the language is great as-is
+and that we should focus on stabilising the compiler. This somewhat contradicts
+the majority. But perhaps most of them thought that "The language" excludes the
+standard library.
+
+For this question, we decided to give our respondents a dedicated place to
+give general feedback about what they feel is needed before v1.0 can be
+released. We received over 200 responses to that. Many of these responses
+reflect what we have already seen: that the documentation needs to improve,
+that we need a good Nim IDE, stability for experimental features such as
+concepts, the standard library needs to be cleaned up.
+
+Unfortunately many respondents used this question to say what needs to be fixed
+in Nim in general, not what is definitely necessary before 1.0 can be released.
+
+Community demographics
+~~~~~~~~~~~~~~~~~~~~~~
+
+What domain do you work in currently?
+_____________________________________
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/domains.png">
+    <img src="../assets/news/images/survey/domains.png" alt="Work domains" style="width:100%"/>
+  </a>
+
+
+Nim users are working in a wide variety of domains. It is encouraging to see
+people from so many different backgrounds taking part in this survey.
+
+What programming languages are you most comfortable with?
+_________________________________________________________
+
+
+.. raw::html
+
+  <a href="../assets/news/images/survey/languages.png">
+    <img src="../assets/news/images/survey/languages.png" alt="Programming languages" style="width:100%"/>
+  </a>
+
+Python and C are the top two programming languages that our respondents are
+most comfortable with. This is not altogether surprising.
+
+Last words
+~~~~~~~~~~
+
+At the end of the survey we gave our respondents a chance to speak their mind
+about anything they wish, with a simple question: "Anything else you'd like
+to tell us?"
+
+There was a lot of great feedback given in this question from people who
+obviously really care deeply about Nim. There is too much to outline here,
+but rest assurred that we will take it all into account and do our best to
+act on it.
+
+In addition to feedback, we were also overwhelmed by the amount of positive
+comments in the answers to this
+question. There was a lot of support from the community thanking us for our
+work and determination.
+
+I'll let some quotes speak for themselves:
+
+.. raw::html
+
+  <blockquote>You rock, seriously.</blockquote>
+  <blockquote>Nim rocks! Keep it up! Thank you very much!</blockquote>
+  <blockquote>You've made great progress on the language without any corporate backing, that is amazing. I wish Nim becomes one of the top used languages in a few years.</blockquote>
+  <blockquote>Nim is elegant and wonderful! Keep at it!</blockquote>
+
+Our community is truly brilliant. We thank each and every one of you for
+filling out this survey and hope that you will help us tackle some of the
+challenges that face Nim.
+
+This survey was a good place to give us feedback, but please don't wait for
+the next one. We are always looking to hear more from you and we hope that you
+will participate in discussions relating to this survey as well the future
+of Nim.
+
+Thanks for reading, and have a good day!
diff --git a/web/news/2016_09_30_version_0_15_0_released.rst b/web/news/2016_09_30_version_0_15_0_released.rst
new file mode 100644
index 000000000..47c02e9e4
--- /dev/null
+++ b/web/news/2016_09_30_version_0_15_0_released.rst
@@ -0,0 +1,517 @@
+Version 0.15.0 released
+=======================
+
+.. container:: metadata
+
+  Posted by Dominik Picheta and Andreas Rumpf on 30/09/2016
+
+We're happy to announce that the latest release of Nim, version 0.15.0, is now
+available!
+
+As always, you can grab the latest version from the
+`downloads page <http://nim-lang.org/download.html>`_.
+
+This release includes almost 180 bug fixes and improvements. To see a full list
+of changes, take a look at the detailed changelog
+`below <#changelog>`_.
+
+Some of the most significant changes in this release include: improvements to
+the documentation, addition of a new ``multisync`` macro, and a new
+``HttpClient`` implementation.
+
+Documentation
+~~~~~~~~~~~~~
+
+All pages in the documentation now contain a search box and a drop down to
+select how procedures should be sorted. This allows you to search for
+procedures, types, macros and more from any documentation page.
+
+.. raw::html
+
+  <a href="../assets/news/images/0.15.0/doc_search.gif">
+    <img src="../assets/news/images/0.15.0/doc_search.gif" alt="Doc search" style="width:100%"/>
+  </a>
+
+Sorting the procedures by type shows a more natural table of contents. This
+should also help you to find procedures and other identifiers.
+
+.. raw::html
+
+  <a href="../assets/news/images/0.15.0/doc_sort.gif">
+    <img src="../assets/news/images/0.15.0/doc_sort.gif" alt="Doc sort" style="width:100%"/>
+  </a>
+
+Multisync macro
+~~~~~~~~~~~~~~~
+
+The ``multisync`` macro was implemented to enable you to define both
+synchronous and asynchronous IO procedures without having to duplicate a
+lot of code.
+
+As an example, consider the ``recvTwice`` procedure below:
+
+.. code-block:: nim
+  proc recvTwice(socket: Socket | AsyncSocket): Future[string] {.multisync.} =
+    result = ""
+    result.add(await socket.recv(25))
+    result.add(await socket.recv(20))
+
+The ``multisync`` macro will transform this procedure into the following:
+
+.. code-block:: nim
+  proc recvTwice(socket: Socket): string =
+    result = ""
+    result.add(socket.recv(25))
+    result.add(socket.recv(20))
+
+  proc recvTwice(socket: AsyncSocket): Future[string] {.async.} =
+    result = ""
+    result.add(await socket.recv(25))
+    result.add(await socket.recv(20))
+
+Allowing you to use ``recvTwice`` with both synchronous and asynchronous sockets.
+
+HttpClient
+~~~~~~~~~~
+
+Many of the ``httpclient`` module's procedures have been deprecated in
+favour of a new implementation using the ``multisync`` macro. There are now
+two types: ``HttpClient`` and ``AsyncHttpClient``. Both of these implement the
+same procedures and functionality, the only difference is timeout support and
+whether they are blocking or not.
+
+See the `httpclient <http://nim-lang.org/docs/httpclient.html>`_ module
+documentation for more information.
+
+Changelog
+~~~~~~~~~
+
+Changes affecting backwards compatibility
+-----------------------------------------
+
+- The ``json`` module now uses an ``OrderedTable`` rather than a ``Table``
+  for JSON objects.
+
+- The ``split`` `(doc) <http://nim-lang.org/docs/strutils.html#split,string,set[char],int>`_
+  procedure in the ``strutils`` module (with a delimiter of type
+  ``set[char]``) no longer strips and splits characters out of the target string
+  by the entire set of characters. Instead, it now behaves in a
+  similar fashion to ``split`` with ``string`` and ``char``
+  delimiters. Use ``splitWhitespace`` to get the old behaviour.
+
+- The command invocation syntax will soon apply to open brackets
+  and curlies too. This means that code like ``a [i]`` will be
+  interpreted as ``a([i])`` and not as ``a[i]`` anymore. Likewise
+  ``f (a, b)`` means that the tuple ``(a, b)`` is passed to ``f``.
+  The compiler produces a warning for ``a [i]``::
+
+    Warning: a [b] will be parsed as command syntax; spacing is deprecated
+
+  See `Issue #3898 <https://github.com/nim-lang/Nim/issues/3898>`_ for the
+  relevant discussion.
+
+- Overloading the special operators ``.``, ``.()``, ``.=``, ``()`` now
+  needs to be enabled via the ``{.experimental.}`` pragma.
+
+- ``immediate`` templates and macros are now deprecated.
+  Use ``untyped`` `(doc) <http://nim-lang.org/docs/manual.html#templates-typed-vs-untyped-parameters>`_
+  parameters instead.
+
+- The metatype ``expr`` is deprecated. Use ``untyped``
+  `(doc) <http://nim-lang.org/docs/manual.html#templates-typed-vs-untyped-parameters>`_ instead.
+
+- The metatype ``stmt`` is deprecated. Use ``typed``
+  `(doc) <http://nim-lang.org/docs/manual.html#templates-typed-vs-untyped-parameters>`_ instead.
+
+- The compiler is now more picky when it comes to ``tuple`` types. The
+  following code used to compile, now it's rejected:
+
+.. code-block:: nim
+
+  import tables
+  var rocketaims = initOrderedTable[string, Table[tuple[k: int8, v: int8], int64]]()
+  rocketaims["hi"] = {(-1.int8, 0.int8): 0.int64}.toTable()
+
+Instead be consistent in your tuple usage and use tuple names for named tuples:
+
+.. code-block:: nim
+
+  import tables
+  var rocketaims = initOrderedTable[string, Table[tuple[k: int8, v: int8], int64]]()
+  rocketaims["hi"] = {(k: -1.int8, v: 0.int8): 0.int64}.toTable()
+
+- Now when you compile console applications for Windows, console output
+  encoding is automatically set to UTF-8.
+
+- Unhandled exceptions in JavaScript are now thrown regardless of whether
+  ``noUnhandledHandler`` is defined. But the stack traces should be much more
+  readable now.
+
+- In JavaScript, the ``system.alert`` procedure has been deprecated.
+  Use ``dom.alert`` instead.
+
+- De-deprecated ``re.nim`` because there is too much code using it
+  and it got the basic API right.
+
+- The type of ``headers`` field in the ``AsyncHttpClient`` type
+  `(doc) <http://nim-lang.org/docs/httpclient.html#AsyncHttpClient>`_
+  has been changed
+  from a string table to the specialised ``HttpHeaders`` type.
+
+- The ``httpclient.request``
+  `(doc) <http://nim-lang.org/docs/httpclient.html#request,AsyncHttpClient,string,string,string>`_
+  procedure which takes the ``httpMethod`` as a string
+  value no longer requires it to be prefixed with ``"http"``
+  (or similar).
+
+- Converting a ``HttpMethod``
+  `(doc) <nim-lang.org/docs/httpcore.html#HttpMethod>`_
+  value to a string using the ``$`` operator will
+  give string values without the ``"Http"`` prefix now.
+
+- The ``Request``
+  `(doc) <http://nim-lang.org/docs/asynchttpserver.html#Request>`_
+  object defined in the ``asynchttpserver`` module now uses
+  the ``HttpMethod`` type for the request method.
+
+Library Additions
+-----------------
+
+- Added ``readHeaderRow`` and ``rowEntry`` to the ``parsecsv``
+  `(doc) <http://nim-lang.org/docs/parsecsv.html>`_ module
+  to provide
+  a lightweight alternative to python's ``csv.DictReader``.
+
+- Added ``setStdIoUnbuffered`` proc to the ``system`` module to enable
+  unbuffered I/O.
+
+- Added ``center`` and ``rsplit`` to the ``strutils``
+  `(doc) <http://nim-lang.org/docs/strutils.html>`_ module
+  to provide similar Python functionality for Nim's strings.
+
+- Added ``isTitle``, ``title``, ``swapCase``, ``isUpper``, ``toUpper``,
+  ``isLower``, ``toLower``, ``isAlpha``, ``isSpace``, and ``capitalize``
+  to the ``unicode.nim``
+  `(doc) <http://nim-lang.org/docs/unicode.html>`_ module
+  to provide unicode aware case manipulation and case
+  testing.
+
+- Added a new module ``strmisc``
+  `(doc) <http://nim-lang.org/docs/strmisc.html>`_
+  to hold uncommon string
+  operations. Currently contains ``partition``, ``rpartition``
+  and ``expandTabs``.
+
+- Split out ``walkFiles`` in the ``os``
+  `(doc) <http://nim-lang.org/docs/os.html>`_ module to three separate procs
+  in order to make a clear distinction of functionality. ``walkPattern`` iterates
+  over both files and directories, while ``walkFiles`` now only iterates
+  over files and ``walkDirs`` only iterates over directories.
+
+- Added a synchronous ``HttpClient`` in the ``httpclient``
+  `(doc) <http://nim-lang.org/docs/httpclient.html>`_
+  module. The old
+  ``get``, ``post`` and similar procedures are now deprecated in favour of it.
+
+- Added a new macro called ``multisync`` allowing you to write procedures for
+  synchronous and asynchronous sockets with no duplication.
+
+- The ``async`` macro will now complete ``FutureVar[T]`` parameters
+  automatically unless they have been completed already.
+
+Tool Additions
+--------------
+
+- The documentation is now searchable and sortable by type.
+- Pragmas are now hidden by default in the documentation to reduce noise.
+- Edit links are now present in the documentation.
+
+
+Compiler Additions
+------------------
+
+- The ``-d/--define`` flag can now optionally take a value to be used
+  by code at compile time.
+  `(doc) <http://nim-lang.org/docs/manual.html#implementation-specific-pragmas-compile-time-define-pragmas>`_
+
+Nimscript Additions
+-------------------
+
+- It's possible to enable and disable specific hints and warnings in
+  Nimscript via the ``warning`` and ``hint`` procedures.
+
+- Nimscript exports  a proc named ``patchFile`` which can be used to
+  patch modules or include files for different Nimble packages, including
+  the ``stdlib`` package.
+
+Language Additions
+------------------
+
+- Added ``{.intdefine.}`` and ``{.strdefine.}`` macros to make use of
+  (optional) compile time defines.
+  `(doc) <http://nim-lang.org/docs/manual.html#implementation-specific-pragmas-compile-time-define-pragmas>`_
+
+- If the first statement is an ``import system`` statement then ``system``
+  is not imported implicitly anymore. This allows for code like
+  ``import system except echo`` or ``from system import nil``.
+
+Bugfixes
+--------
+
+The list below has been generated based on the commits in Nim's git
+repository. As such it lists only the issues which have been closed
+via a commit, for a full list see
+`this link on Github <https://github.com/nim-lang/Nim/issues?utf8=%E2%9C%93&q=is%3Aissue+closed%3A%222016-06-22+..+2016-09-30%22+>`_.
+
+- Fixed "RFC: should startsWith and endsWith work with characters?"
+  (`#4252 <https://github.com/nim-lang/Nim/issues/4252>`_)
+
+- Fixed "Feature request: unbuffered I/O"
+  (`#2146 <https://github.com/nim-lang/Nim/issues/2146>`_)
+- Fixed "clear() not implemented for CountTableRef"
+  (`#4325 <https://github.com/nim-lang/Nim/issues/4325>`_)
+- Fixed "Cannot close file opened async"
+  (`#4334 <https://github.com/nim-lang/Nim/issues/4334>`_)
+- Fixed "Feature Request: IDNA support"
+  (`#3045 <https://github.com/nim-lang/Nim/issues/3045>`_)
+- Fixed "Async: wrong behavior of boolean operations on futures"
+  (`#4333 <https://github.com/nim-lang/Nim/issues/4333>`_)
+- Fixed "os.walkFiles yields directories"
+  (`#4280 <https://github.com/nim-lang/Nim/issues/4280>`_)
+- Fixed "Fix #4392 and progress on #4170"
+  (`#4393 <https://github.com/nim-lang/Nim/issues/4393>`_)
+- Fixed "Await unable to wait futures from objects fields"
+  (`#4390 <https://github.com/nim-lang/Nim/issues/4390>`_)
+- Fixed "TMP variable name generation should be more stable"
+  (`#4364 <https://github.com/nim-lang/Nim/issues/4364>`_)
+- Fixed "nativesockets doesn't compile for Android 4.x (API v19 or older) because of gethostbyaddr"
+  (`#4376 <https://github.com/nim-lang/Nim/issues/4376>`_)
+- Fixed "no generic parameters allowed for ref"
+  (`#4395 <https://github.com/nim-lang/Nim/issues/4395>`_)
+- Fixed "split proc in strutils inconsistent for set[char]"
+  (`#4305 <https://github.com/nim-lang/Nim/issues/4305>`_)
+- Fixed "Problem with sets in devel"
+  (`#4412 <https://github.com/nim-lang/Nim/issues/4412>`_)
+- Fixed "Compiler crash when using seq[PNimrodNode] in macros"
+  (`#537 <https://github.com/nim-lang/Nim/issues/537>`_)
+- Fixed "ospaths should be marked for nimscript use only"
+  (`#4249 <https://github.com/nim-lang/Nim/issues/4249>`_)
+- Fixed "Repeated deepCopy() on a recursive data structure eventually crashes"
+  (`#4340 <https://github.com/nim-lang/Nim/issues/4340>`_)
+- Fixed "Analyzing destructor"
+  (`#4371 <https://github.com/nim-lang/Nim/issues/4371>`_)
+- Fixed "getType does not work anymore on a typedesc"
+  (`#4462 <https://github.com/nim-lang/Nim/issues/4462>`_)
+- Fixed "Error in rendering empty JSON array"
+  (`#4399 <https://github.com/nim-lang/Nim/issues/4399>`_)
+- Fixed "Segmentation fault when using async pragma on generic procs"
+  (`#2377 <https://github.com/nim-lang/Nim/issues/2377>`_)
+- Fixed "Forwarding does not work for generics,  | produces an implicit generic"
+  (`#3055 <https://github.com/nim-lang/Nim/issues/3055>`_)
+- Fixed "Inside a macro, the length of the `seq` data inside a `queue` does not increase and crashes"
+  (`#4422 <https://github.com/nim-lang/Nim/issues/4422>`_)
+- Fixed "compiler sigsegv while processing varargs"
+  (`#4475 <https://github.com/nim-lang/Nim/issues/4475>`_)
+- Fixed "JS codegen - strings are assigned by reference"
+  (`#4471 <https://github.com/nim-lang/Nim/issues/4471>`_)
+- Fixed "when statement doesn't verify syntax"
+  (`#4301 <https://github.com/nim-lang/Nim/issues/4301>`_)
+- Fixed ".this pragma doesn't work with .async procs"
+  (`#4358 <https://github.com/nim-lang/Nim/issues/4358>`_)
+- Fixed "type foo = range(...) crashes compiler"
+  (`#4429 <https://github.com/nim-lang/Nim/issues/4429>`_)
+- Fixed "Compiler crash"
+  (`#2730 <https://github.com/nim-lang/Nim/issues/2730>`_)
+- Fixed "Crash in compiler with static[int]"
+  (`#3706 <https://github.com/nim-lang/Nim/issues/3706>`_)
+- Fixed "Bad error message "could not resolve""
+  (`#3548 <https://github.com/nim-lang/Nim/issues/3548>`_)
+- Fixed "Roof operator on string in template crashes compiler  (Error: unhandled exception: sons is not accessible [FieldError])"
+  (`#3545 <https://github.com/nim-lang/Nim/issues/3545>`_)
+- Fixed "SIGSEGV during compilation with parallel block"
+  (`#2758 <https://github.com/nim-lang/Nim/issues/2758>`_)
+- Fixed "Codegen error with template and implicit dereference"
+  (`#4478 <https://github.com/nim-lang/Nim/issues/4478>`_)
+- Fixed "@ in importcpp should work with no-argument functions"
+  (`#4496 <https://github.com/nim-lang/Nim/issues/4496>`_)
+- Fixed "Regression: findExe raises"
+  (`#4497 <https://github.com/nim-lang/Nim/issues/4497>`_)
+- Fixed "Linking error - repeated symbols when splitting into modules"
+  (`#4485 <https://github.com/nim-lang/Nim/issues/4485>`_)
+- Fixed "Error: method is not a base"
+  (`#4428 <https://github.com/nim-lang/Nim/issues/4428>`_)
+- Fixed "Casting from function returning a tuple fails"
+  (`#4345 <https://github.com/nim-lang/Nim/issues/4345>`_)
+- Fixed "clang error with default nil parameter"
+  (`#4328 <https://github.com/nim-lang/Nim/issues/4328>`_)
+- Fixed "internal compiler error: openArrayLoc"
+  (`#888 <https://github.com/nim-lang/Nim/issues/888>`_)
+- Fixed "Can't forward declare async procs"
+  (`#1970 <https://github.com/nim-lang/Nim/issues/1970>`_)
+- Fixed "unittest.check and sequtils.allIt do not work together"
+  (`#4494 <https://github.com/nim-lang/Nim/issues/4494>`_)
+- Fixed "httpclient package can't make SSL requests over an HTTP proxy"
+  (`#4520 <https://github.com/nim-lang/Nim/issues/4520>`_)
+- Fixed "False positive warning "declared but not used" for enums."
+  (`#4510 <https://github.com/nim-lang/Nim/issues/4510>`_)
+- Fixed "Explicit conversions not using converters"
+  (`#4432 <https://github.com/nim-lang/Nim/issues/4432>`_)
+
+- Fixed "Unclear error message when importing"
+  (`#4541 <https://github.com/nim-lang/Nim/issues/4541>`_)
+- Fixed "Change console encoding to UTF-8 by default"
+  (`#4417 <https://github.com/nim-lang/Nim/issues/4417>`_)
+
+- Fixed "Typedesc ~= Generic notation does not work anymore!"
+  (`#4534 <https://github.com/nim-lang/Nim/issues/4534>`_)
+- Fixed "unittest broken?"
+  (`#4555 <https://github.com/nim-lang/Nim/issues/4555>`_)
+- Fixed "Operator "or" in converter types seems to crash the compiler."
+  (`#4537 <https://github.com/nim-lang/Nim/issues/4537>`_)
+- Fixed "nimscript failed to compile/run -- Error: cannot 'importc' variable at compile time"
+  (`#4561 <https://github.com/nim-lang/Nim/issues/4561>`_)
+- Fixed "Regression: identifier expected, but found ..."
+  (`#4564 <https://github.com/nim-lang/Nim/issues/4564>`_)
+- Fixed "varargs with transformation that takes var argument creates invalid c code"
+  (`#4545 <https://github.com/nim-lang/Nim/issues/4545>`_)
+- Fixed "Type mismatch when using empty tuple as generic parameter"
+  (`#4550 <https://github.com/nim-lang/Nim/issues/4550>`_)
+- Fixed "strscans"
+  (`#4562 <https://github.com/nim-lang/Nim/issues/4562>`_)
+- Fixed "getTypeImpl crashes (SIGSEGV) on variant types"
+  (`#4526 <https://github.com/nim-lang/Nim/issues/4526>`_)
+- Fixed "Wrong result of sort in VM"
+  (`#4065 <https://github.com/nim-lang/Nim/issues/4065>`_)
+- Fixed "I can't call the random[T](x: Slice[T]): T"
+  (`#4353 <https://github.com/nim-lang/Nim/issues/4353>`_)
+- Fixed "invalid C code generated (function + block + empty tuple)"
+  (`#4505 <https://github.com/nim-lang/Nim/issues/4505>`_)
+
+- Fixed "performance issue: const Table make a copy at runtime lookup."
+  (`#4354 <https://github.com/nim-lang/Nim/issues/4354>`_)
+- Fixed "Compiler issue: libraries without absolute paths cannot be found correctly"
+  (`#4568 <https://github.com/nim-lang/Nim/issues/4568>`_)
+- Fixed "Cannot use math.`^` with non-int types."
+  (`#4574 <https://github.com/nim-lang/Nim/issues/4574>`_)
+- Fixed "C codegen fails when constructing an array using an object constructor."
+  (`#4582 <https://github.com/nim-lang/Nim/issues/4582>`_)
+- Fixed "Visual Studio 10 unresolved external symbol _trunc(should we support VS2010?)"
+  (`#4532 <https://github.com/nim-lang/Nim/issues/4532>`_)
+- Fixed "Cannot pass generic subtypes to proc for generic supertype"
+  (`#4528 <https://github.com/nim-lang/Nim/issues/4528>`_)
+- Fixed "Lamda-lifting bug leading to crash."
+  (`#4551 <https://github.com/nim-lang/Nim/issues/4551>`_)
+- Fixed "First-class iterators declared as inline are compiled at Nim side (no error message) and fail at C"
+  (`#2094 <https://github.com/nim-lang/Nim/issues/2094>`_)
+- Fixed "VS2010-warning C4090 : 'function' : different 'const' qualifiers"
+  (`#4590 <https://github.com/nim-lang/Nim/issues/4590>`_)
+- Fixed "Regression: type mismatch with generics"
+  (`#4589 <https://github.com/nim-lang/Nim/issues/4589>`_)
+- Fixed "„can raise an unlisted exception“ when assigning nil as default value"
+  (`#4593 <https://github.com/nim-lang/Nim/issues/4593>`_)
+- Fixed "upcoming asyncdispatch.closeSocket is not GC-safe"
+  (`#4606 <https://github.com/nim-lang/Nim/issues/4606>`_)
+- Fixed "Visual Studio 10.0 compiler errors, 12.0 warning"
+  (`#4459 <https://github.com/nim-lang/Nim/issues/4459>`_)
+- Fixed "Exception of net.newContext: result.extraInternalIndex == 0  [AssertionError]"
+  (`#4406 <https://github.com/nim-lang/Nim/issues/4406>`_)
+- Fixed "error: redeclaration of 'result_115076' with no linkage"
+  (`#3221 <https://github.com/nim-lang/Nim/issues/3221>`_)
+- Fixed "Compiler crashes on conversion from int to float at compile time"
+  (`#4619 <https://github.com/nim-lang/Nim/issues/4619>`_)
+- Fixed "wrong number of arguments regression in devel"
+  (`#4600 <https://github.com/nim-lang/Nim/issues/4600>`_)
+- Fixed "importc $ has broken error message (and is not documented)"
+  (`#4579 <https://github.com/nim-lang/Nim/issues/4579>`_)
+- Fixed "Compiler segfaults on simple importcpp in js mode [regression]"
+  (`#4632 <https://github.com/nim-lang/Nim/issues/4632>`_)
+- Fixed "Critical reference counting codegen problem"
+  (`#4653 <https://github.com/nim-lang/Nim/issues/4653>`_)
+- Fixed "tables.nim needs lots of {.noSideEffect.}"
+  (`#4254 <https://github.com/nim-lang/Nim/issues/4254>`_)
+- Fixed "Capture variable error when using ``=>`` macro"
+  (`#4658 <https://github.com/nim-lang/Nim/issues/4658>`_)
+- Fixed "Enum from char: internal error getInt"
+  (`#3606 <https://github.com/nim-lang/Nim/issues/3606>`_)
+- Fixed "Compiler crashes in debug mode (no error in release mode) with Natural discriminant in object variants"
+  (`#2865 <https://github.com/nim-lang/Nim/issues/2865>`_)
+- Fixed "SIGSEGV when access field in const object variants"
+  (`#4253 <https://github.com/nim-lang/Nim/issues/4253>`_)
+- Fixed "varargs cannot be used with template converter."
+  (`#4292 <https://github.com/nim-lang/Nim/issues/4292>`_)
+- Fixed "Compiler crashes when borrowing $"
+  (`#3928 <https://github.com/nim-lang/Nim/issues/3928>`_)
+- Fixed "internal error: genMagicExpr: mArrPut"
+  (`#4491 <https://github.com/nim-lang/Nim/issues/4491>`_)
+- Fixed "Unhelpful error message on importc namespace collision"
+  (`#4580 <https://github.com/nim-lang/Nim/issues/4580>`_)
+- Fixed "Problem with openarrays and slices"
+  (`#4179 <https://github.com/nim-lang/Nim/issues/4179>`_)
+- Fixed "Removing lines from end of file then rebuilding does not rebuild [js only?]"
+  (`#4656 <https://github.com/nim-lang/Nim/issues/4656>`_)
+- Fixed "getCurrentException and getCurrentExceptionMsg do not work with JS"
+  (`#4635 <https://github.com/nim-lang/Nim/issues/4635>`_)
+- Fixed "generic proc parameter is not inferred if type parameter has specifier"
+  (`#4672 <https://github.com/nim-lang/Nim/issues/4672>`_)
+- Fixed "Cannot instantiate generic parameter when it is parent type parameter"
+  (`#4673 <https://github.com/nim-lang/Nim/issues/4673>`_)
+- Fixed "deepCopy doesn't work with inheritance after last commit"
+  (`#4693 <https://github.com/nim-lang/Nim/issues/4693>`_)
+- Fixed "Multi-methods don't work when passing ref to a different thread"
+  (`#4689 <https://github.com/nim-lang/Nim/issues/4689>`_)
+- Fixed "Infinite loop in effect analysis on generics"
+  (`#4677 <https://github.com/nim-lang/Nim/issues/4677>`_)
+- Fixed "SIGSEGV when compiling NimYAML tests"
+  (`#4699 <https://github.com/nim-lang/Nim/issues/4699>`_)
+
+- Fixed "Closing AsyncEvent now also unregisters it on non-Windows platforms"
+  (`#4694 <https://github.com/nim-lang/Nim/issues/4694>`_)
+- Fixed "Don't update handle in upcoming/asyncdispatch poll() if it was closed"
+  (`#4697 <https://github.com/nim-lang/Nim/issues/4697>`_)
+- Fixed "generated local variables declared outside block"
+  (`#4721 <https://github.com/nim-lang/Nim/issues/4721>`_)
+- Fixed "Footer Documentation links, & Community link point to the wrong place under news entries"
+  (`#4529 <https://github.com/nim-lang/Nim/issues/4529>`_)
+- Fixed "Jester's macro magic leads to incorrect C generation"
+  (`#4088 <https://github.com/nim-lang/Nim/issues/4088>`_)
+- Fixed "cas bug in atomics.nim"
+  (`#3279 <https://github.com/nim-lang/Nim/issues/3279>`_)
+- Fixed "nimgrep PEG not capturing the pattern 'A'"
+  (`#4751 <https://github.com/nim-lang/Nim/issues/4751>`_)
+- Fixed "GC assert triggers when assigning TableRef threadvar"
+  (`#4640 <https://github.com/nim-lang/Nim/issues/4640>`_)
+- Fixed ".this pragma conflicts with experimental ptr dereferencing when names conflict"
+  (`#4671 <https://github.com/nim-lang/Nim/issues/4671>`_)
+- Fixed "Generic procs accepting var .importcpp type do not work [regression]"
+  (`#4625 <https://github.com/nim-lang/Nim/issues/4625>`_)
+- Fixed "C Error on tuple assignment with array"
+  (`#4626 <https://github.com/nim-lang/Nim/issues/4626>`_)
+- Fixed "module securehash not gcsafe"
+  (`#4760 <https://github.com/nim-lang/Nim/issues/4760>`_)
+
+- Fixed "Nimble installation failed on Windows x86."
+  (`#4764 <https://github.com/nim-lang/Nim/issues/4764>`_)
+- Fixed "Recent changes to marshal module break old marshalled data"
+  (`#4779 <https://github.com/nim-lang/Nim/issues/4779>`_)
+- Fixed "tnewasyncudp.nim test loops forever"
+  (`#4777 <https://github.com/nim-lang/Nim/issues/4777>`_)
+- Fixed "Wrong poll timeout behavior in asyncdispatch"
+  (`#4262 <https://github.com/nim-lang/Nim/issues/4262>`_)
+- Fixed "Standalone await shouldn't read future"
+  (`#4170 <https://github.com/nim-lang/Nim/issues/4170>`_)
+- Fixed "Regression: httpclient fails to compile without -d:ssl"
+  (`#4797 <https://github.com/nim-lang/Nim/issues/4797>`_)
+- Fixed "C Error on declaring array of heritable objects with bitfields"
+  (`#3567 <https://github.com/nim-lang/Nim/issues/3567>`_)
+- Fixed "Corruption when using Channels and Threads"
+  (`#4776 <https://github.com/nim-lang/Nim/issues/4776>`_)
+- Fixed "Sometimes Channel tryRecv() erroneously reports no messages available on the first call on Windows"
+  (`#4746 <https://github.com/nim-lang/Nim/issues/4746>`_)
+- Fixed "Improve error message of functions called without parenthesis"
+  (`#4813 <https://github.com/nim-lang/Nim/issues/4813>`_)
+- Fixed "Docgen doesn't find doc comments in macro generated procs"
+  (`#4803 <https://github.com/nim-lang/Nim/issues/4803>`_)
+- Fixed "asynchttpserver may consume unbounded memory reading headers"
+  (`#3847 <https://github.com/nim-lang/Nim/issues/3847>`_)
+- Fixed "TLS connection to api.clashofclans.com hangs forever."
+  (`#4587 <https://github.com/nim-lang/Nim/issues/4587>`_)
diff --git a/web/news/nim_community_survey_results.rst b/web/news/nim_community_survey_results.rst
deleted file mode 100644
index 49656f20a..000000000
--- a/web/news/nim_community_survey_results.rst
+++ /dev/null
@@ -1,317 +0,0 @@
-Nim Community Survey Results
-============================
-
-.. container:: metadata
-
-  Posted by Dominik Picheta on 20/08/2016
-
-We have recently closed the 2016 Nim Community Survey. I am happy to
-say that we have received exactly 790 responses, huge thanks go to the people
-that took the time to respond. We're very thankful for this very valuable
-feedback.
-
-This survey was inspired in part by the
-`2016 State of Rust <https://blog.rust-lang.org/2016/06/30/State-of-Rust-Survey-2016.html>`_
-survey. You will note that many of the questions were modelled after
-Rust's survey. One of the reasons for doing this was to allow us to easily
-compare our results against the results obtained in the Rust survey. In
-addition, we of course also liked many of their questions.
-
-Our survey ran from the 23rd of June 2016 until the 8th of August 2016. The
-response numbers are impressive considering Nim's community size; at 790 they
-make up just over 25% of the Rust survey's responses.
-
-The goal of this survey was to primarily determine how our community is using
-Nim, in order to better understand how we should be improving it. In particular,
-we wanted to know what people feel is missing from Nim in the lead up to
-version 1.0. We have also asked our respondents about how well the Nim tools
-worked, the challenges of adopting Nim, the resources that they used to learn
-Nim and more.
-
-It is my hope that we will be able to run a similar survey in a years time,
-doing so should give us an idea of whether we are improving.
-With these general facts in mind, let's begin looking at specific questions.
-
-How did you find out about Nim?
--------------------------------
-
-The rationale for the first question was simple, we wanted to know where our
-respondents found out about Nim. This is an interesting question for us, as
-we do occassionally get users asking us why it took so long for them to hear
-about Nim. It allows us to see how effective each website is at spreading the
-word about Nim.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/nim_found.png">
-    <img src="../assets/news/images/survey/nim_found.png" alt="How did you find out about Nim?" style="width:100%"/>
-  </a>
-
-The majority of our respondents found Nim via Reddit, HackerNews or a search
-engine such as Google. These results are not altogether surprising. There were
-also a lot of "Other" responses, some of which were a bit more
-interesting. These included multiple mentions of habrahabr.ru, Dr. Dobb's,
-and lobste.rs.
-
-Do you use Nim?
----------------
-
-Just like the Rust survey creators, we wanted to ensure that our survey was
-open to both Nim users as well people who never used Nim. In addition to
-those two groups, we have also included a third group of people: ex-Nim
-users. All three are interesting, for many different reasons.
-Nim users can tell us how they are using Nim and also how Nim's
-tooling can improve. Ex-Nim users give us an
-idea of why they stopped using Nim. Finally, respondents who never used Nim
-can tell us the reasons for not adopting it.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/do_you_use_nim.png">
-    <img src="../assets/news/images/survey/do_you_use_nim.png" alt="Do you use Nim?" style="width:100%"/>
-  </a>
-
-It's nice to see that we have such a good range of respondents. The Rust survey
-had a much larger number of Rust users amongst their respondents, with
-no distinction between users that never used Rust and users that stopped using
-Rust.
-
-.. raw::html
-
-  <a href="https://blog.rust-lang.org/images/2016-06-Survey/do_you_use_rust.png">
-    <img src="https://blog.rust-lang.org/images/2016-06-Survey/do_you_use_rust.png" alt="Do you use Rust?" style="width:100%"/>
-  </a>
-
-Should we consider your answers to be invalid?
-----------------------------------------------
-
-This was something I thought would be interesting to have, after I saw it
-being used in another survey. While it does pinpoint possibly
-invalid respondents, I have opted against filtering those out. Mainly because
-that would require re-creating each of the charts generated by Google Forms
-manually.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/reliability.png">
-    <img src="../assets/news/images/survey/reliability.png" alt="Should we consider your answers to be invalid?" style="width:100%"/>
-  </a>
-
-According to the responses to this question, around 94% of our responses
-can be considered reliable.
-
-Nim users
----------
-
-The following questions were answered only by the 38.9% of our respondents
-who identified themselves as Nim users.
-
-How long have you been using Nim?
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/nim_time.png">
-    <img src="../assets/news/images/survey/nim_time.png" alt="How long have you been using Nim?" style="width:100%"/>
-  </a>
-
-A large proportion of our Nim users were new. This is good news as it means that
-our community is growing, with a large proportion of new Nim users that could
-become long-term Nimians. In total, more than 35% of Nim users can be considered
-new having used Nim for less than 3 months. With 18% of Nim users that can
-be considered very new having used Nim for less than a month.
-This could suggest that 18% of our users have only just found out about Nim in
-the last week or so and have not yet got the chance to use it extensively.
-
-The high percentages of long term Nim users are encouraging.
-They suggest
-that many users are continuing to use Nim after making it through the first
-few months. The sharp drop at 7-9 months is interesting, but may simply be
-due to the fact that there were fewer newcomers during that period, or it
-could be because our respondents are more likely to estimate that they have
-been using Nim for a year or half a year rather than the awkward 7-9 months.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/nim_time_rust.png">
-    <img src="../assets/news/images/survey/nim_time_rust.png" alt="Time using Nim and Rust" style="width:100%"/>
-  </a>
-
-The results for Nim and Rust are actually remarkably similar. They both show a
-drop at 7-9 months, although Rust's isn't as dramatic. Nim on the other hand
-has a significantly higher percentage of new Nim users.
-
-Do you use Nim at work?
-~~~~~~~~~~~~~~~~~~~~~~~
-
-An important aspect of a language's adoption is whether it is being used for
-"real" work. We wanted to know how many people are using Nim in their day
-jobs and under what circumstances it is used.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/nim_at_work.png">
-    <img src="../assets/news/images/survey/nim_at_work.png" alt="Do you use Nim at work?" style="width:100%"/>
-  </a>
-
-While a vast majority of our users are not using Nim at work, more than 25%
-of them are. It's encouraging to see such a high number already, even before
-we have released version 1.0. In fact, this percentage is likely close to 30%,
-because many of the "Other" responses mention using Nim for the likes of
-internal tools or small scripts to help with the respondent's work.
-
-.. raw::html
-
-  <a href="https://blog.rust-lang.org/images/2016-06-Survey/rust_at_work.png">
-    <img src="https://blog.rust-lang.org/images/2016-06-Survey/rust_at_work.png" alt="Do you use Rust at work?" style="width:100%"/>
-  </a>
-
-Interestingly, a larger percentage of Nim users are using Nim at work than
-Rust users. The sample sizes are of course vastly different, but it's still an
-interesting result. Combined, nearly 1/5th of Rust users are using Rust
-commercially whereas more than a quarter of Nim users are using Nim
-commercially.
-
-Approximately how large are all the Nim projects that you work on?
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Finding out how large the Nim projects worked on by Nim users are is also
-very valuable.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/project_size.png">
-    <img src="../assets/news/images/survey/project_size.png" alt="Nim project size for all users" style="width:100%"/>
-  </a>
-
-This shows us that currently Nim is primarily being used for small scripts and
-applications, with nearly 60% of the projects consisting of less than 1,000
-lines of code. This makes sense as many of our users are not using Nim
-professionally, but are doing so in their spare time.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/project_size_work.png">
-    <img src="../assets/news/images/survey/project_size_work.png" alt="Nim project size for work users" style="width:100%"/>
-  </a>
-
-The numbers for part-time and full-time work users of Nim tell a different
-story. Over 70% of the projects written by full-time users are between 10,001
-and 100,000 lines of code. Part-time users show a slightly different trend,
-with many more small projects, the majority being between 1,000 and
-10,000 lines of code.
-
-Overall it's good to see that there is a few large projects out there which are
-composed of more than 100,000 lines of code. We expect to see the amount of
-large projects to grow with time, especially with version 1.0 on the way.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/project_size_nim_rust.png">
-    <img src="../assets/news/images/survey/project_size_nim_rust.png" alt="Nim project size for work users (Nim vs. Rust)" style="width:100%"/>
-  </a>
-
-In comparison to Rust the proportion of project sizes for full-time users is
-vastly different. This is likely due to our small sample size. Project sizes for
-part-time users between Rust and Nim are somewhat similar, with differences of
-around 10% for each project size.
-
-Do you plan to try to use Nim at work?
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/planning_to_use_at_work.png">
-    <img src="../assets/news/images/survey/planning_to_use_at_work.png" alt="Planning to use Nim at work?" style="width:100%"/>
-  </a>
-
-It's also encouraging to see that over 50% of Nim users are planning to use
-Nim at work! This is slightly more than Rust's 40% and should help Nim's
-adoption into even more areas.
-
-Nim and its tools
-~~~~~~~~~~~~~~~~~
-
-In this section of the survey, we wanted to find out the tools that Nim
-users are utilising when developing Nim applications.
-
-What editor(s) do you use when writing Nim?
-___________________________________________
-
-Programmers are very specific when it comes to their editor of choice, because
-of that it's good to know which editor is most popular among our community.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/editors.png">
-    <img src="../assets/news/images/survey/editors.png" alt="Editors used by Nim users" style="width:100%"/>
-  </a>
-
-Looks like Vim is the winner with almost 30%. Followed by Sublime Text and
-Visual Studio Code. Aporia, the Nim IDE, gets a respectable 15.5%. There was
-also more than
-17% of answers which included "Other" editors, such as: Notepad++, Geany, gedit,
-and Kate.
-
-What operating system(s) do you compile for and run your Nim projects on?
-_________________________________________________________________________
-
-This question gave us information about the most popular target operating
-systems, as well as some of the more obscure ones. We have asked this question
-to find out the platforms on which Nim applications run on most frequently.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/target_os.png">
-    <img src="../assets/news/images/survey/target_os.png" alt="Target operating systems" style="width:100%"/>
-  </a>
-
-This question allowed multiple choices, so each percentage is out of the total
-number of respondents for this question. For example, 80.7% of the
-respondents selected "Linux" but only 26.6% selected OS X.
-
-This makes Linux by far the most popular target for Nim applications.
-Some "Other" targets included: BSD (OpenBSD, FreeBSD), iOS, Android, and
-JavaScript.
-It's great to see Nim being used on such a wide variety of platforms.
-
-What operating system(s) do you develop Nim projects on?
-________________________________________________________
-
-With this question, we wanted to know what operating systems are used for
-development.
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/dev_os.png">
-    <img src="../assets/news/images/survey/dev_os.png" alt="Development operating systems" style="width:100%"/>
-  </a>
-
-This question also allowed multiple choices and ended up with very similar
-results.
-
-You can see that Linux is also the most popular developmental
-platform for Nim. But it's more popular as a target platform.
-
-Which version(s) of Nim do you use for your applications?
-_________________________________________________________
-
-.. raw::html
-
-  <a href="../assets/news/images/survey/nim_versions.png">
-    <img src="../assets/news/images/survey/nim_versions.png" alt="Version use" style="width:100%"/>
-  </a>
-
-At the time of this survey, version 0.14.2 was the latest stable release.
-It's no wonder that it is the most commonly used release of Nim. It's good to
-see that the older versions are not used as often. The high use of ``Git HEAD (devel)``
-(nightly builds) isn't surprising, Nim is still evolving rapidly and our
-release schedule is not regular or frequent.
-
-Once we go past the 1.0 release, we expect to see much less use of the unstable
-``devel`` branch.
-
-
-
-
-
diff --git a/web/news/version_0_15_released.rst b/web/news/version_0_15_released.rst
deleted file mode 100644
index 1e35fb627..000000000
--- a/web/news/version_0_15_released.rst
+++ /dev/null
@@ -1,108 +0,0 @@
-Version 0.15.0 released
-=======================
-
-.. container:: metadata
-
-  Posted by Dominik Picheta on 17/09/2016
-
-Some text here.
-
-Changes affecting backwards compatibility
------------------------------------------
-
-- De-deprecated ``re.nim`` because we have too much code using it
-  and it got the basic API right.
-
-- ``split`` with ``set[char]`` as a delimiter in ``strutils.nim``
-  no longer strips and splits characters out of the target string
-  by the entire set of characters. Instead, it now behaves in a
-  similar fashion to ``split`` with ``string`` and ``char``
-  delimiters. Use ``splitWhitespace`` to get the old behaviour.
-- The command invocation syntax will soon apply to open brackets
-  and curlies too. This means that code like ``a [i]`` will be
-  interpreted as ``a([i])`` and not as ``a[i]`` anymore. Likewise
-  ``f (a, b)`` means that the tuple ``(a, b)`` is passed to ``f``.
-  The compiler produces a warning for ``a [i]``::
-
-    Warning: a [b] will be parsed as command syntax; spacing is deprecated
-
-  See `<https://github.com/nim-lang/Nim/issues/3898>`_ for the relevant
-  discussion.
-- Overloading the special operators ``.``, ``.()``, ``.=``, ``()`` now
-  should be enabled via ``{.experimental.}``.
-- ``immediate`` templates and macros are now deprecated.
-  Instead use ``untyped`` parameters.
-- The metatype ``expr`` is deprecated. Use ``untyped`` instead.
-- The metatype ``stmt`` is deprecated. Use ``typed`` instead.
-- The compiler is now more picky when it comes to ``tuple`` types. The
-  following code used to compile, now it's rejected:
-
-.. code-block:: nim
-
-  import tables
-  var rocketaims = initOrderedTable[string, Table[tuple[k: int8, v: int8], int64] ]()
-  rocketaims["hi"] = {(-1.int8, 0.int8): 0.int64}.toTable()
-
-Instead be consistent in your tuple usage and use tuple names for tuples
-that have tuple name:
-
-.. code-block:: nim
-
-  import tables
-  var rocketaims = initOrderedTable[string, Table[tuple[k: int8, v: int8], int64] ]()
-  rocketaims["hi"] = {(k: -1.int8, v: 0.int8): 0.int64}.toTable()
-
-- Now when you compile console application for Windows, console output
-  encoding is automatically set to UTF-8.
-
-Library Additions
------------------
-
-- Added ``readHeaderRow`` and ``rowEntry`` to ``parsecsv.nim`` to provide
-  a lightweight alternative to python's ``csv.DictReader``.
-- Added ``setStdIoUnbuffered`` proc to ``system.nim`` to enable unbuffered I/O.
-
-- Added ``center`` and ``rsplit`` to ``strutils.nim`` to
-  provide similar Python functionality for Nim's strings.
-
-- Added ``isTitle``, ``title``, ``swapCase``, ``isUpper``, ``toUpper``,
-  ``isLower``, ``toLower``, ``isAlpha``, ``isSpace``, and ``capitalize``
-  to ``unicode.nim`` to provide unicode aware case manipulation and case
-  testing.
-
-- Added a new module ``lib/pure/strmisc.nim`` to hold uncommon string
-  operations. Currently contains ``partition``, ``rpartition``
-  and ``expandTabs``.
-
-- Split out ``walkFiles`` in ``os.nim`` to three separate procs in order
-  to make a clear distinction of functionality. ``walkPattern`` iterates
-  over both files and directories, while ``walkFiles`` now only iterates
-  over files and ``walkDirs`` only iterates over directories.
-
-Compiler Additions
-------------------
-
-- The ``-d/--define`` flag can now optionally take a value to be used
-  by code at compile time.
-
-Nimscript Additions
--------------------
-
-- Finally it's possible to dis/enable specific hints and warnings in
-  Nimscript via the procs ``warning`` and ``hint``.
-- Nimscript exports  a proc named ``patchFile`` which can be used to
-  patch modules or include files for different Nimble packages, including
-  the ``stdlib`` package.
-
-
-Language Additions
-------------------
-
-- Added ``{.intdefine.}`` and ``{.strdefine.}`` macros to make use of
-  (optional) compile time defines.
-- If the first statement is an ``import system`` statement then ``system``
-  is not imported implicitly anymore. This allows for code like
-  ``import system except echo`` or ``from system import nil``.
-
-Bugfixes
---------
diff --git a/web/sponsors.csv b/web/sponsors.csv
index ac35b284c..0701575d5 100644
--- a/web/sponsors.csv
+++ b/web/sponsors.csv
@@ -1,31 +1,34 @@
 logo, name, url, this_month, all_time, since, level
-assets/bountysource/secondspectrum.png,Second Spectrum,http://www.secondspectrum.com/,250,750,"May 5, 2016",250
-assets/bountysource/xored.svg,"Xored Software, Inc.",http://xored.com/,250,500,"Jun 20, 2016",250
-,avsej,http://avsej.net,75,85,"Jun 10, 2016",75
-,shkolnick-kun,https://github.com/shkolnick-kun,75,75,"Jul 6, 2016",75
-,flyx,http://flyx.org,35,140,"Apr 7, 2016",75
-,endragor,https://github.com/endragor,25,100,"Apr 7, 2016",25
-,euantorano,http://euantorano.co.uk,25,50,"Jun 7, 2016",25
-,FedericoCeratto,http://firelet.net,25,100,"Apr 7, 2016",25
-,"Adrian Veith",,25,100,"Apr 20, 2016",25
-,xxlabaza,https://github.com/xxlabaza,25,45,"Jun 17, 2016",25
-,"Yuriy Glukhov",,25,100,"Apr 6, 2016",25
-,"Jonathan Arnett",,10,30,"May 20, 2016",10
-,"Oskari Timperi",,10,20,"Jun 8, 2016",10
-,zachaysan,http://venn.lc,10,20,"Jun 7, 2016",10
-,"Matthew Baulch",,10,20,"Jun 7, 2016",10
-,RationalG,https://github.com/RationalG,10,20,"Jun 17, 2016",10
-,btbytes,https://www.btbytes.com/,10,40,"Apr 6, 2016",10
-,niebaopeng,https://github.com/niebaopeng,10,30,"Apr 15, 2016",10
-,moigagoo,http://sloth-ci.com,5,15,"May 13, 2016",5
-,calind,http://calindon.net,5,10,"Jun 7, 2016",5
-,swalf,https://github.com/swalf,5,35,"May 9, 2016",5
-,johnnovak,http://www.johnnovak.net/,5,20,"Apr 29, 2016",5
-,RyanMarcus,http://rmarcus.info,5,5,"Jul 19, 2016",5
-,Blumenversand,https://blumenversender.com/,5,5,"Jul 21, 2016",5
-,lenzenmi,https://github.com/lenzenmi,5,5,"Jul 28, 2016",5
-,"Handojo Goenadi",,5,20,"Apr 19, 2016",5
-,"Date in Asia",,5,5,"Jul 30, 2016",5
-,"Matthew Newton",,5,20,"Apr 20, 2016",5
-,"Michael D. Sklaroff",,1,4,"Apr 27, 2016",1
-,"Svend Knudsen",,1,4,"Apr 11, 2016",1
+assets/bountysource/secondspectrum.png,Second Spectrum,http://www.secondspectrum.com/,250,1250,"May 5, 2016",250
+assets/bountysource/xored.svg,"Xored Software, Inc.",http://xored.com/,250,1000,"Jun 20, 2016",250
+,shkolnick-kun,https://github.com/shkolnick-kun,75,225,"Jul 6, 2016",75
+,flyx,http://flyx.org,35,210,"Apr 7, 2016",75
+,"Yuriy Glukhov",,25,150,"Apr 6, 2016",25
+,endragor,https://github.com/endragor,25,150,"Apr 7, 2016",25
+,FedericoCeratto,http://firelet.net,25,150,"Apr 7, 2016",25
+,"Adrian Veith",,25,150,"Apr 20, 2016",25
+,skunkiferous,https://github.com/skunkiferous,100,100,"Oct 2, 2016",150
+,euantorano,http://euantorano.co.uk,25,100,"Jun 7, 2016",25
+,xxlabaza,https://github.com/xxlabaza,25,95,"Jun 17, 2016",25
+,btbytes,https://www.btbytes.com/,10,60,"Apr 6, 2016",10
+,niebaopeng,https://github.com/niebaopeng,10,50,"Apr 15, 2016",10
+,"Jonathan Arnett",,10,50,"May 20, 2016",10
+,swalf,https://github.com/swalf,5,45,"May 9, 2016",5
+,zolern,https://github.com/zolern,10,40,"Apr 15, 2016",10
+,"pyloor ",https://schwarz-weiss.cc/,10,40,"May 16, 2016",10
+,zachaysan,http://venn.lc,10,40,"Jun 7, 2016",10
+,"Matthew Baulch",,10,40,"Jun 7, 2016",10
+,"Oskari Timperi",,10,40,"Jun 8, 2016",10
+,"Handojo Goenadi",,5,35,"Apr 19, 2016",5
+,"Matthew Newton",,5,30,"Apr 20, 2016",5
+,johnnovak,http://www.johnnovak.net/,5,30,"Apr 29, 2016",5
+,RyanMarcus,http://rmarcus.info,5,15,"Jul 19, 2016",5
+,lenzenmi,https://github.com/lenzenmi,5,15,"Jul 28, 2016",5
+,cpunion,https://github.com/cpunion,10,10,"Sep 9, 2016",10
+,pandada8,https://github.com/pandada8,5,10,"Aug 12, 2016",5
+,abeaumont,http://alfredobeaumont.org/blog,5,10,"Aug 12, 2016",5
+,"Svend Knudsen",,1,6,"Apr 11, 2016",1
+,"Michael D. Sklaroff",,1,6,"Apr 27, 2016",1
+,csoriano89,https://github.com/csoriano89,5,5,"Sep 7, 2016",5
+,nicck,,1,2,"Aug 9, 2016",1
+,campbellr,,1,1,"Sep 4, 2016",1
diff --git a/web/ticker.html b/web/ticker.html
index ecbfb5e3f..a05ea8476 100644
--- a/web/ticker.html
+++ b/web/ticker.html
@@ -1,3 +1,13 @@
+<a class="news" href="$1news/2016_09_30_version_0_15_0_released.html">
+  <h4>September 30, 2016</h4>
+  <p>Nim version 0.15.0 has been released!</p>
+</a>
+
+<a class="news" href="$1news/2016_09_03_nim_community_survey_results.html">
+  <h4>September 3, 2016</h4>
+  <p>Nim Community Survey results</p>
+</a>
+
 <a class="news" href="$1news/2016_08_06_bountysource_update_the_road_to_v10.html">
   <h4>August 6, 2016</h4>
   <p>BountySource Update: The Road to v1.0</p>
@@ -13,13 +23,4 @@
   <p>Nim version 0.14.2 has been released!</p>
 </a>
 
-<a class="news" href="$1news/2016_06_04_meet_our_bountysource_sponsors.html">
-  <h4>June 04, 2016</h4>
-  <p>Meet our BountySource sponsors</p>
-</a>
-
-<a class="news" href="$1news/2016_01_27_nim_in_action_is_now_available.html">
-  <h4>January 27, 2016</h4>
-  <p>Nim in Action is now available!</p>
-</a>
 <a href="$1news.html" class="blue">See All News...</a>