6 files changed, 22 insertions, 12 deletions
diff --git a/lib/impure/nre.nim b/lib/impure/nre.nim
index 823cae1a3..5c5125ba1 100644
--- a/lib/impure/nre.nim
+++ b/lib/impure/nre.nim
@@ -442,7 +442,7 @@ proc extractOptions(pattern: string): tuple[pattern: string, flags: int, study:
 # }}}
 
 proc destroyRegex(pattern: Regex) =
-  pcre.free(pattern.pcreObj)
+  pcre.free_substring(cast[cstring](pattern.pcreObj))
   pattern.pcreObj = nil
   if pattern.pcreExtra != nil:
     pcre.free_study(pattern.pcreExtra)
diff --git a/lib/impure/re.nim b/lib/impure/re.nim
index 6f57185e6..4f32cd5fb 100644
--- a/lib/impure/re.nim
+++ b/lib/impure/re.nim
@@ -60,9 +60,12 @@ proc rawCompile(pattern: string, flags: cint): ptr Pcre =
     raiseInvalidRegex($msg & "\n" & pattern & "\n" & spaces(offset) & "^\n")
 
 proc finalizeRegEx(x: Regex) =
-  pcre.free(x.h)
+  # XXX This is a hack, but PCRE does not export its "free" function properly.
+  # Sigh. The hack relies on PCRE's implementation (see ``pcre_get.c``).
+  # Fortunately the implementation is unlikely to change.
+  pcre.free_substring(cast[cstring](x.h))
   if not isNil(x.e):
-    pcre.free_study(x.e)
+    pcre.free_substring(cast[cstring](x.e))
 
 proc re*(s: string, flags = {reStudy}): Regex =
   ## Constructor of regular expressions.
diff --git a/lib/pure/os.nim b/lib/pure/os.nim
index fa32c10c4..b0b17260e 100644
--- a/lib/pure/os.nim
+++ b/lib/pure/os.nim
@@ -35,6 +35,7 @@
 ##   `execShellCmd proc <#execShellCmd,string>`_
 ## * `parseopt module <parseopt.html>`_ for command-line parser beyond
 ##   `parseCmdLine proc <#parseCmdLine,string>`_
+## * `uri module <uri.html>`_
 ## * `distros module <distros.html>`_
 ## * `dynlib module <dynlib.html>`_
 ## * `streams module <streams.html>`_
@@ -115,13 +116,15 @@ proc joinPath*(head, tail: string): string {.
   ##
   ## If `head` is the empty string, `tail` is returned. If `tail` is the empty
   ## string, `head` is returned with a trailing path separator. If `tail` starts
-  ## with a path separator it will be removed when concatenated to `head`. Other
-  ## path separators not located on boundaries won't be modified.
+  ## with a path separator it will be removed when concatenated to `head`.
+  ## Path separators will be normalized.
   ##
   ## See also:
   ## * `joinPath(varargs) proc <#joinPath,varargs[string]>`_
   ## * `/ proc <#/,string,string>`_
   ## * `splitPath proc <#splitPath,string>`_
+  ## * `uri.combine proc <uri.html#combine,Uri,Uri>`_
+  ## * `uri./ proc <uri.html#/,Uri,string>`_
   runnableExamples:
     when defined(posix):
       assert joinPath("usr", "lib") == "usr/lib"
@@ -186,6 +189,8 @@ proc `/`*(head, tail: string): string {.noSideEffect.} =
   ## * `joinPath(head, tail) proc <#joinPath,string,string>`_
   ## * `joinPath(varargs) proc <#joinPath,varargs[string]>`_
   ## * `splitPath proc <#splitPath,string>`_
+  ## * `uri.combine proc <uri.html#combine,Uri,Uri>`_
+  ## * `uri./ proc <uri.html#/,Uri,string>`_
   runnableExamples:
     when defined(posix):
       assert "usr" / "" == "usr/"
diff --git a/lib/system/embedded.nim b/lib/system/embedded.nim
index fb89e7f0f..d1e05dad5 100644
--- a/lib/system/embedded.nim
+++ b/lib/system/embedded.nim
@@ -29,8 +29,7 @@ const
   nativeStackTraceSupported = false
   hasSomeStackTrace = false
 
-proc quitOrDebug() {.inline.} =
-  quit(1)
+proc quitOrDebug() {.noreturn, importc: "abort", header: "<stdlib.h>", nodecl.}
 
 proc raiseException(e: ref Exception, ename: cstring) {.compilerRtl.} =
   sysFatal(ReraiseError, "exception handling is not available")
diff --git a/lib/system/excpt.nim b/lib/system/excpt.nim
index 8849caee5..75a0e8967 100644
--- a/lib/system/excpt.nim
+++ b/lib/system/excpt.nim
@@ -38,10 +38,15 @@ proc showErrorMessage(data: cstring) {.gcsafe.} =
       writeToStdErr(data)
 
 proc quitOrDebug() {.inline.} =
-  when not defined(endb):
-    quit(1)
-  else:
+  when defined(endb):
     endbStep() # call the debugger
+  elif not defined(nodejs) and not defined(nimscript):
+    when nimvm:
+      quit(1)
+    else:
+      c_abort()
+  else:
+    quit(1)
 
 proc chckIndx(i, a, b: int): int {.inline, compilerproc, benign.}
 proc chckRange(i, a, b: int): int {.inline, compilerproc, benign.}
diff --git a/lib/wrappers/pcre.nim b/lib/wrappers/pcre.nim
index b7975abb8..c4bb24cfd 100644
--- a/lib/wrappers/pcre.nim
+++ b/lib/wrappers/pcre.nim
@@ -341,8 +341,6 @@ proc compile2*(pattern: cstring,
                erroffset: ptr cint,
                tableptr: pointer): ptr Pcre
 
-proc free*(p: ptr Pcre)
-
 proc config*(what: cint,
              where: pointer): cint