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-rw-r--r--lib/core/macros.nim230
-rw-r--r--lib/impure/db_mysql.nim6
-rw-r--r--lib/impure/db_postgres.nim6
-rw-r--r--lib/impure/db_sqlite.nim14
-rw-r--r--lib/impure/osinfo_posix.nim87
-rw-r--r--lib/impure/osinfo_win.nim421
-rw-r--r--lib/impure/re.nim145
-rw-r--r--lib/js/dom.nim233
-rw-r--r--lib/packages/docutils/highlite.nim446
-rw-r--r--lib/packages/docutils/rst.nim912
-rw-r--r--lib/packages/docutils/rstast.nim83
-rw-r--r--lib/packages/docutils/rstgen.nim9
-rw-r--r--lib/posix/posix.nim15
-rw-r--r--lib/pure/algorithm.nim10
-rw-r--r--lib/pure/asyncdispatch.nim39
-rw-r--r--lib/pure/asyncftpclient.nim4
-rw-r--r--lib/pure/asyncio.nim96
-rw-r--r--lib/pure/collections/intsets.nim66
-rw-r--r--lib/pure/collections/sequtils.nim16
-rw-r--r--lib/pure/collections/sets.nim351
-rw-r--r--lib/pure/collections/tables.nim63
-rw-r--r--lib/pure/concurrency/threadpool.nim2
-rw-r--r--lib/pure/fenv.nim78
-rw-r--r--lib/pure/ftpclient.nim52
-rw-r--r--lib/pure/future.nim10
-rw-r--r--lib/pure/htmlgen.nim178
-rw-r--r--lib/pure/httpclient.nim10
-rw-r--r--lib/pure/json.nim251
-rw-r--r--lib/pure/logging.nim70
-rw-r--r--lib/pure/math.nim7
-rw-r--r--lib/pure/os.nim13
-rw-r--r--lib/pure/osproc.nim2
-rw-r--r--lib/pure/pegs.nim46
-rw-r--r--lib/pure/rationals.nim20
-rw-r--r--lib/pure/rawsockets.nim7
-rw-r--r--lib/pure/redis.nim24
-rw-r--r--lib/pure/ropes.nim168
-rw-r--r--lib/pure/smtp.nim2
-rw-r--r--lib/pure/strutils.nim42
-rw-r--r--lib/pure/times.nim148
-rw-r--r--lib/pure/unicode.nim1930
-rw-r--r--lib/pure/unittest.nim6
-rw-r--r--lib/pure/xmldom.nim16
-rw-r--r--lib/pure/xmltree.nim90
-rw-r--r--lib/system.nim196
-rw-r--r--lib/system/alloc.nim208
-rw-r--r--lib/system/atomics.nim111
-rw-r--r--lib/system/gc_ms.nim2
-rw-r--r--lib/system/jssys.nim18
-rw-r--r--lib/system/mmdisp.nim24
-rw-r--r--lib/system/sysio.nim38
-rw-r--r--lib/system/threads.nim4
-rw-r--r--lib/windows/windows.nim10
-rw-r--r--lib/wrappers/iup.nim228
54 files changed, 3538 insertions, 3725 deletions
diff --git a/lib/core/macros.nim b/lib/core/macros.nim
index f73dbd241..5583748e0 100644
--- a/lib/core/macros.nim
+++ b/lib/core/macros.nim
@@ -85,11 +85,11 @@ type
     ntyInt8, ntyInt16, ntyInt32, ntyInt64,
     ntyFloat, ntyFloat32, ntyFloat64, ntyFloat128,
     ntyUInt, ntyUInt8, ntyUInt16, ntyUInt32, ntyUInt64,
-    ntyBigNum, 
-    ntyConst, ntyMutable, ntyVarargs, 
+    ntyBigNum,
+    ntyConst, ntyMutable, ntyVarargs,
     ntyIter,
     ntyError
-    
+
   TNimTypeKinds* {.deprecated.} = set[NimTypeKind]
   NimSymKind* = enum
     nskUnknown, nskConditional, nskDynLib, nskParam,
@@ -120,12 +120,10 @@ const
   nnkCallKinds* = {nnkCall, nnkInfix, nnkPrefix, nnkPostfix, nnkCommand,
                    nnkCallStrLit}
 
-{.push warning[deprecated]: off.}
-
-proc `[]`*(n: PNimrodNode, i: int): PNimrodNode {.magic: "NChild", noSideEffect.}
+proc `[]`*(n: NimNode, i: int): NimNode {.magic: "NChild", noSideEffect.}
   ## get `n`'s `i`'th child.
 
-proc `[]=`*(n: PNimrodNode, i: int, child: PNimrodNode) {.magic: "NSetChild",
+proc `[]=`*(n: NimNode, i: int, child: NimNode) {.magic: "NSetChild",
   noSideEffect.}
   ## set `n`'s `i`'th child to `child`.
 
@@ -141,34 +139,34 @@ proc `$`*(s: NimSym): string {.magic: "IdentToStr", noSideEffect.}
 proc `==`*(a, b: NimIdent): bool {.magic: "EqIdent", noSideEffect.}
   ## compares two Nim identifiers
 
-proc `==`*(a, b: PNimrodNode): bool {.magic: "EqNimrodNode", noSideEffect.}
+proc `==`*(a, b: NimNode): bool {.magic: "EqNimrodNode", noSideEffect.}
   ## compares two Nim nodes
 
-proc len*(n: PNimrodNode): int {.magic: "NLen", noSideEffect.}
+proc len*(n: NimNode): int {.magic: "NLen", noSideEffect.}
   ## returns the number of children of `n`.
 
-proc add*(father, child: PNimrodNode): PNimrodNode {.magic: "NAdd", discardable,
+proc add*(father, child: NimNode): NimNode {.magic: "NAdd", discardable,
   noSideEffect, locks: 0.}
   ## Adds the `child` to the `father` node. Returns the
   ## father node so that calls can be nested.
 
-proc add*(father: PNimrodNode, children: varargs[PNimrodNode]): PNimrodNode {.
+proc add*(father: NimNode, children: varargs[NimNode]): NimNode {.
   magic: "NAddMultiple", discardable, noSideEffect, locks: 0.}
   ## Adds each child of `children` to the `father` node.
   ## Returns the `father` node so that calls can be nested.
 
-proc del*(father: PNimrodNode, idx = 0, n = 1) {.magic: "NDel", noSideEffect.}
+proc del*(father: NimNode, idx = 0, n = 1) {.magic: "NDel", noSideEffect.}
   ## deletes `n` children of `father` starting at index `idx`.
 
-proc kind*(n: PNimrodNode): TNimrodNodeKind {.magic: "NKind", noSideEffect.}
+proc kind*(n: NimNode): NimNodeKind {.magic: "NKind", noSideEffect.}
   ## returns the `kind` of the node `n`.
 
-proc intVal*(n: PNimrodNode): BiggestInt {.magic: "NIntVal", noSideEffect.}
-proc floatVal*(n: PNimrodNode): BiggestFloat {.magic: "NFloatVal", noSideEffect.}
-proc symbol*(n: PNimrodNode): NimSym {.magic: "NSymbol", noSideEffect.}
-proc ident*(n: PNimrodNode): NimIdent {.magic: "NIdent", noSideEffect.}
+proc intVal*(n: NimNode): BiggestInt {.magic: "NIntVal", noSideEffect.}
+proc floatVal*(n: NimNode): BiggestFloat {.magic: "NFloatVal", noSideEffect.}
+proc symbol*(n: NimNode): NimSym {.magic: "NSymbol", noSideEffect.}
+proc ident*(n: NimNode): NimIdent {.magic: "NIdent", noSideEffect.}
 
-proc getType*(n: PNimrodNode): PNimrodNode {.magic: "NGetType", noSideEffect.}
+proc getType*(n: NimNode): NimNode {.magic: "NGetType", noSideEffect.}
   ## with 'getType' you can access the node's `type`:idx:. A Nim type is
   ## mapped to a Nim AST too, so it's slightly confusing but it means the same
   ## API can be used to traverse types. Recursive types are flattened for you
@@ -176,30 +174,30 @@ proc getType*(n: PNimrodNode): PNimrodNode {.magic: "NGetType", noSideEffect.}
   ## resolve recursive types, you have to call 'getType' again. To see what
   ## kind of type it is, call `typeKind` on getType's result.
 
-proc typeKind*(n: PNimrodNode): NimTypeKind {.magic: "NGetType", noSideEffect.}
+proc typeKind*(n: NimNode): NimTypeKind {.magic: "NGetType", noSideEffect.}
   ## Returns the type kind of the node 'n' that should represent a type, that
   ## means the node should have been obtained via `getType`.
 
-proc strVal*(n: PNimrodNode): string  {.magic: "NStrVal", noSideEffect.}
+proc strVal*(n: NimNode): string  {.magic: "NStrVal", noSideEffect.}
 
-proc `intVal=`*(n: PNimrodNode, val: BiggestInt) {.magic: "NSetIntVal", noSideEffect.}
-proc `floatVal=`*(n: PNimrodNode, val: BiggestFloat) {.magic: "NSetFloatVal", noSideEffect.}
-proc `symbol=`*(n: PNimrodNode, val: NimSym) {.magic: "NSetSymbol", noSideEffect.}
-proc `ident=`*(n: PNimrodNode, val: NimIdent) {.magic: "NSetIdent", noSideEffect.}
-#proc `typ=`*(n: PNimrodNode, typ: typedesc) {.magic: "NSetType".}
+proc `intVal=`*(n: NimNode, val: BiggestInt) {.magic: "NSetIntVal", noSideEffect.}
+proc `floatVal=`*(n: NimNode, val: BiggestFloat) {.magic: "NSetFloatVal", noSideEffect.}
+proc `symbol=`*(n: NimNode, val: NimSym) {.magic: "NSetSymbol", noSideEffect.}
+proc `ident=`*(n: NimNode, val: NimIdent) {.magic: "NSetIdent", noSideEffect.}
+#proc `typ=`*(n: NimNode, typ: typedesc) {.magic: "NSetType".}
 # this is not sound! Unfortunately forbidding 'typ=' is not enough, as you
 # can easily do:
 #   let bracket = semCheck([1, 2])
 #   let fake = semCheck(2.0)
 #   bracket[0] = fake  # constructs a mixed array with ints and floats!
 
-proc `strVal=`*(n: PNimrodNode, val: string) {.magic: "NSetStrVal", noSideEffect.}
+proc `strVal=`*(n: NimNode, val: string) {.magic: "NSetStrVal", noSideEffect.}
 
-proc newNimNode*(kind: TNimrodNodeKind,
-                 n: PNimrodNode=nil): PNimrodNode {.magic: "NNewNimNode", noSideEffect.}
+proc newNimNode*(kind: NimNodeKind,
+                 n: NimNode=nil): NimNode {.magic: "NNewNimNode", noSideEffect.}
 
-proc copyNimNode*(n: PNimrodNode): PNimrodNode {.magic: "NCopyNimNode", noSideEffect.}
-proc copyNimTree*(n: PNimrodNode): PNimrodNode {.magic: "NCopyNimTree", noSideEffect.}
+proc copyNimNode*(n: NimNode): NimNode {.magic: "NCopyNimNode", noSideEffect.}
+proc copyNimTree*(n: NimNode): NimNode {.magic: "NCopyNimTree", noSideEffect.}
 
 proc error*(msg: string) {.magic: "NError", benign.}
   ## writes an error message at compile time
@@ -210,27 +208,27 @@ proc warning*(msg: string) {.magic: "NWarning", benign.}
 proc hint*(msg: string) {.magic: "NHint", benign.}
   ## writes a hint message at compile time
 
-proc newStrLitNode*(s: string): PNimrodNode {.compileTime, noSideEffect.} =
+proc newStrLitNode*(s: string): NimNode {.compileTime, noSideEffect.} =
   ## creates a string literal node from `s`
   result = newNimNode(nnkStrLit)
   result.strVal = s
 
-proc newIntLitNode*(i: BiggestInt): PNimrodNode {.compileTime.} =
+proc newIntLitNode*(i: BiggestInt): NimNode {.compileTime.} =
   ## creates a int literal node from `i`
   result = newNimNode(nnkIntLit)
   result.intVal = i
 
-proc newFloatLitNode*(f: BiggestFloat): PNimrodNode {.compileTime.} =
+proc newFloatLitNode*(f: BiggestFloat): NimNode {.compileTime.} =
   ## creates a float literal node from `f`
   result = newNimNode(nnkFloatLit)
   result.floatVal = f
 
-proc newIdentNode*(i: NimIdent): PNimrodNode {.compileTime.} =
+proc newIdentNode*(i: NimIdent): NimNode {.compileTime.} =
   ## creates an identifier node from `i`
   result = newNimNode(nnkIdent)
   result.ident = i
 
-proc newIdentNode*(i: string): PNimrodNode {.compileTime.} =
+proc newIdentNode*(i: string): NimNode {.compileTime.} =
   ## creates an identifier node from `i`
   result = newNimNode(nnkIdent)
   result.ident = !i
@@ -247,7 +245,7 @@ type
 
 {.deprecated: [TBindSymRule: BindSymRule].}
 
-proc bindSym*(ident: string, rule: BindSymRule = brClosed): PNimrodNode {.
+proc bindSym*(ident: string, rule: BindSymRule = brClosed): NimNode {.
               magic: "NBindSym", noSideEffect.}
   ## creates a node that binds `ident` to a symbol node. The bound symbol
   ## may be an overloaded symbol.
@@ -258,48 +256,48 @@ proc bindSym*(ident: string, rule: BindSymRule = brClosed): PNimrodNode {.
   ## If ``rule == brForceOpen`` always an ``nkOpenSymChoice`` tree is
   ## returned even if the symbol is not ambiguous.
 
-proc genSym*(kind: NimSymKind = nskLet; ident = ""): PNimrodNode {.
+proc genSym*(kind: NimSymKind = nskLet; ident = ""): NimNode {.
   magic: "NGenSym", noSideEffect.}
   ## generates a fresh symbol that is guaranteed to be unique. The symbol
   ## needs to occur in a declaration context.
 
-proc callsite*(): PNimrodNode {.magic: "NCallSite", benign.}
+proc callsite*(): NimNode {.magic: "NCallSite", benign.}
   ## returns the AST of the invocation expression that invoked this macro.
 
-proc toStrLit*(n: PNimrodNode): PNimrodNode {.compileTime.} =
+proc toStrLit*(n: NimNode): NimNode {.compileTime.} =
   ## converts the AST `n` to the concrete Nim code and wraps that
   ## in a string literal node
   return newStrLitNode(repr(n))
 
-proc lineinfo*(n: PNimrodNode): string {.magic: "NLineInfo", noSideEffect.}
+proc lineinfo*(n: NimNode): string {.magic: "NLineInfo", noSideEffect.}
   ## returns the position the node appears in the original source file
   ## in the form filename(line, col)
 
-proc internalParseExpr(s: string): PNimrodNode {.
+proc internalParseExpr(s: string): NimNode {.
   magic: "ParseExprToAst", noSideEffect.}
 
-proc internalParseStmt(s: string): PNimrodNode {.
+proc internalParseStmt(s: string): NimNode {.
   magic: "ParseStmtToAst", noSideEffect.}
 
 proc internalErrorFlag*(): string {.magic: "NError", noSideEffect.}
   ## Some builtins set an error flag. This is then turned into a proper
   ## exception. **Note**: Ordinary application code should not call this.
 
-proc parseExpr*(s: string): PNimrodNode {.noSideEffect, compileTime.} =
+proc parseExpr*(s: string): NimNode {.noSideEffect, compileTime.} =
   ## Compiles the passed string to its AST representation.
   ## Expects a single expression. Raises ``ValueError`` for parsing errors.
   result = internalParseExpr(s)
   let x = internalErrorFlag()
   if x.len > 0: raise newException(ValueError, x)
 
-proc parseStmt*(s: string): PNimrodNode {.noSideEffect, compileTime.} =
+proc parseStmt*(s: string): NimNode {.noSideEffect, compileTime.} =
   ## Compiles the passed string to its AST representation.
   ## Expects one or more statements. Raises ``ValueError`` for parsing errors.
   result = internalParseStmt(s)
   let x = internalErrorFlag()
   if x.len > 0: raise newException(ValueError, x)
 
-proc getAst*(macroOrTemplate: expr): PNimrodNode {.magic: "ExpandToAst", noSideEffect.}
+proc getAst*(macroOrTemplate: expr): NimNode {.magic: "ExpandToAst", noSideEffect.}
   ## Obtains the AST nodes returned from a macro or template invocation.
   ## Example:
   ##
@@ -308,10 +306,10 @@ proc getAst*(macroOrTemplate: expr): PNimrodNode {.magic: "ExpandToAst", noSideE
   ##   macro FooMacro() =
   ##     var ast = getAst(BarTemplate())
 
-proc quote*(bl: stmt, op = "``"): PNimrodNode {.magic: "QuoteAst", noSideEffect.}
+proc quote*(bl: stmt, 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 PNimrodNode expressions
+  ## Within the quoted AST, you are able to interpolate NimNode expressions
   ## from the surrounding scope. If no operator is given, quoting is done using
   ## backticks. Otherwise, the given operator must be used as a prefix operator
   ## for any interpolated expression. The original meaning of the interpolation
@@ -339,26 +337,26 @@ proc quote*(bl: stmt, op = "``"): PNimrodNode {.magic: "QuoteAst", noSideEffect.
   ##       if not `ex`:
   ##         echo `info` & ": Check failed: " & `expString`
 
-proc expectKind*(n: PNimrodNode, k: TNimrodNodeKind) {.compileTime.} =
+proc expectKind*(n: NimNode, k: NimNodeKind) {.compileTime.} =
   ## checks that `n` is of kind `k`. If this is not the case,
   ## compilation aborts with an error message. This is useful for writing
   ## macros that check the AST that is passed to them.
   if n.kind != k: error("Expected a node of kind " & $k & ", got " & $n.kind)
 
-proc expectMinLen*(n: PNimrodNode, min: int) {.compileTime.} =
+proc expectMinLen*(n: NimNode, min: int) {.compileTime.} =
   ## checks that `n` has at least `min` children. If this is not the case,
   ## compilation aborts with an error message. This is useful for writing
   ## macros that check its number of arguments.
   if n.len < min: error("macro expects a node with " & $min & " children")
 
-proc expectLen*(n: PNimrodNode, len: int) {.compileTime.} =
+proc expectLen*(n: NimNode, len: int) {.compileTime.} =
   ## checks that `n` has exactly `len` children. If this is not the case,
   ## compilation aborts with an error message. This is useful for writing
   ## macros that check its number of arguments.
   if n.len != len: error("macro expects a node with " & $len & " children")
 
-proc newCall*(theProc: PNimrodNode,
-              args: varargs[PNimrodNode]): PNimrodNode {.compileTime.} =
+proc newCall*(theProc: NimNode,
+              args: varargs[NimNode]): NimNode {.compileTime.} =
   ## produces a new call node. `theProc` is the proc that is called with
   ## the arguments ``args[0..]``.
   result = newNimNode(nnkCall)
@@ -366,7 +364,7 @@ proc newCall*(theProc: PNimrodNode,
   result.add(args)
 
 proc newCall*(theProc: NimIdent,
-              args: varargs[PNimrodNode]): PNimrodNode {.compileTime.} =
+              args: varargs[NimNode]): NimNode {.compileTime.} =
   ## produces a new call node. `theProc` is the proc that is called with
   ## the arguments ``args[0..]``.
   result = newNimNode(nnkCall)
@@ -374,35 +372,35 @@ proc newCall*(theProc: NimIdent,
   result.add(args)
 
 proc newCall*(theProc: string,
-              args: varargs[PNimrodNode]): PNimrodNode {.compileTime.} =
+              args: varargs[NimNode]): NimNode {.compileTime.} =
   ## produces a new call node. `theProc` is the proc that is called with
   ## the arguments ``args[0..]``.
   result = newNimNode(nnkCall)
   result.add(newIdentNode(theProc))
   result.add(args)
 
-proc newLit*(c: char): PNimrodNode {.compileTime.} =
+proc newLit*(c: char): NimNode {.compileTime.} =
   ## produces a new character literal node.
   result = newNimNode(nnkCharLit)
   result.intVal = ord(c)
 
-proc newLit*(i: BiggestInt): PNimrodNode {.compileTime.} =
+proc newLit*(i: BiggestInt): NimNode {.compileTime.} =
   ## produces a new integer literal node.
   result = newNimNode(nnkIntLit)
   result.intVal = i
 
-proc newLit*(f: BiggestFloat): PNimrodNode {.compileTime.} =
+proc newLit*(f: BiggestFloat): NimNode {.compileTime.} =
   ## produces a new float literal node.
   result = newNimNode(nnkFloatLit)
   result.floatVal = f
 
-proc newLit*(s: string): PNimrodNode {.compileTime.} =
+proc newLit*(s: string): NimNode {.compileTime.} =
   ## produces a new string literal node.
   result = newNimNode(nnkStrLit)
   result.strVal = s
 
 proc nestList*(theProc: NimIdent,
-               x: PNimrodNode): PNimrodNode {.compileTime.} =
+               x: NimNode): NimNode {.compileTime.} =
   ## nests the list `x` into a tree of call expressions:
   ## ``[a, b, c]`` is transformed into ``theProc(a, theProc(c, d))``.
   var L = x.len
@@ -413,11 +411,11 @@ proc nestList*(theProc: NimIdent,
     # This could easily user code and so should be fixed in evals.nim somehow.
     result = newCall(theProc, x[i], copyNimTree(result))
 
-proc treeRepr*(n: PNimrodNode): string {.compileTime, benign.} =
+proc treeRepr*(n: NimNode): string {.compileTime, benign.} =
   ## Convert the AST `n` to a human-readable tree-like string.
   ##
   ## See also `repr` and `lispRepr`.
-  proc traverse(res: var string, level: int, n: PNimrodNode) {.benign.} =
+  proc traverse(res: var string, level: int, n: NimNode) {.benign.} =
     for i in 0..level-1: res.add "  "
     res.add(($n.kind).substr(3))
 
@@ -438,7 +436,7 @@ proc treeRepr*(n: PNimrodNode): string {.compileTime, benign.} =
   result = ""
   traverse(result, 0, n)
 
-proc lispRepr*(n: PNimrodNode): string {.compileTime, benign.} =
+proc lispRepr*(n: NimNode): string {.compileTime, benign.} =
   ## Convert the AST `n` to a human-readable lisp-like string,
   ##
   ## See also `repr` and `treeRepr`.
@@ -485,56 +483,56 @@ macro dumpLispImm*(s: stmt): stmt {.immediate, deprecated.} = echo s.lispRepr
   ## The ``immediate`` version of `dumpLisp`.
 
 
-proc newEmptyNode*(): PNimrodNode {.compileTime, noSideEffect.} =
+proc newEmptyNode*(): NimNode {.compileTime, noSideEffect.} =
   ## Create a new empty node
   result = newNimNode(nnkEmpty)
 
-proc newStmtList*(stmts: varargs[PNimrodNode]): PNimrodNode {.compileTime.}=
+proc newStmtList*(stmts: varargs[NimNode]): NimNode {.compileTime.}=
   ## Create a new statement list
   result = newNimNode(nnkStmtList).add(stmts)
 
-proc newPar*(exprs: varargs[PNimrodNode]): PNimrodNode {.compileTime.}=
+proc newPar*(exprs: varargs[NimNode]): NimNode {.compileTime.}=
   ## Create a new parentheses-enclosed expression
   newNimNode(nnkPar).add(exprs)
 
-proc newBlockStmt*(label, body: PNimrodNode): PNimrodNode {.compileTime.} =
+proc newBlockStmt*(label, body: NimNode): NimNode {.compileTime.} =
   ## Create a new block statement with label
   return newNimNode(nnkBlockStmt).add(label, body)
 
-proc newBlockStmt*(body: PNimrodNode): PNimrodNode {.compiletime.} =
+proc newBlockStmt*(body: NimNode): NimNode {.compiletime.} =
   ## Create a new block: stmt
   return newNimNode(nnkBlockStmt).add(newEmptyNode(), body)
 
-proc newVarStmt*(name, value: PNimrodNode): PNimrodNode {.compiletime.} =
+proc newVarStmt*(name, value: NimNode): NimNode {.compiletime.} =
   ## Create a new var stmt
   return newNimNode(nnkVarSection).add(
     newNimNode(nnkIdentDefs).add(name, newNimNode(nnkEmpty), value))
 
-proc newLetStmt*(name, value: PNimrodNode): PNimrodNode {.compiletime.} =
+proc newLetStmt*(name, value: NimNode): NimNode {.compiletime.} =
   ## Create a new let stmt
   return newNimNode(nnkLetSection).add(
     newNimNode(nnkIdentDefs).add(name, newNimNode(nnkEmpty), value))
 
-proc newConstStmt*(name, value: PNimrodNode): PNimrodNode {.compileTime.} =
+proc newConstStmt*(name, value: NimNode): NimNode {.compileTime.} =
   ## Create a new const stmt
   newNimNode(nnkConstSection).add(
     newNimNode(nnkConstDef).add(name, newNimNode(nnkEmpty), value))
 
-proc newAssignment*(lhs, rhs: PNimrodNode): PNimrodNode {.compileTime.} =
+proc newAssignment*(lhs, rhs: NimNode): NimNode {.compileTime.} =
   return newNimNode(nnkAsgn).add(lhs, rhs)
 
-proc newDotExpr*(a, b: PNimrodNode): PNimrodNode {.compileTime.} =
+proc newDotExpr*(a, b: NimNode): NimNode {.compileTime.} =
   ## Create new dot expression
   ## a.dot(b) ->  `a.b`
   return newNimNode(nnkDotExpr).add(a, b)
 
-proc newColonExpr*(a, b: PNimrodNode): PNimrodNode {.compileTime.} =
+proc newColonExpr*(a, b: NimNode): NimNode {.compileTime.} =
   ## Create new colon expression
   ## newColonExpr(a, b) ->  `a: b`
   newNimNode(nnkExprColonExpr).add(a, b)
 
-proc newIdentDefs*(name, kind: PNimrodNode;
-                   default = newEmptyNode()): PNimrodNode {.compileTime.} =
+proc newIdentDefs*(name, kind: NimNode;
+                   default = newEmptyNode()): NimNode {.compileTime.} =
   ## Creates a new ``nnkIdentDefs`` node of a specific kind and value.
   ##
   ## ``nnkIdentDefs`` need to have at least three children, but they can have
@@ -565,13 +563,13 @@ proc newIdentDefs*(name, kind: PNimrodNode;
   ##       newStrLitNode("Hello"))
   newNimNode(nnkIdentDefs).add(name, kind, default)
 
-proc newNilLit*(): PNimrodNode {.compileTime.} =
+proc newNilLit*(): NimNode {.compileTime.} =
   ## New nil literal shortcut
   result = newNimNode(nnkNilLit)
 
-proc high*(node: PNimrodNode): int {.compileTime.} = len(node) - 1
+proc high*(node: NimNode): int {.compileTime.} = len(node) - 1
   ## Return the highest index available for a node
-proc last*(node: PNimrodNode): PNimrodNode {.compileTime.} = node[node.high]
+proc last*(node: NimNode): NimNode {.compileTime.} = node[node.high]
   ## Return the last item in nodes children. Same as `node[node.high()]`
 
 
@@ -581,11 +579,11 @@ const
   CallNodes* = {nnkCall, nnkInfix, nnkPrefix, nnkPostfix, nnkCommand,
     nnkCallStrLit, nnkHiddenCallConv}
 
-proc expectKind*(n: PNimrodNode; k: set[TNimrodNodeKind]) {.compileTime.} =
+proc expectKind*(n: NimNode; k: set[NimNodeKind]) {.compileTime.} =
   assert n.kind in k, "Expected one of " & $k & ", got " & $n.kind
 
-proc newProc*(name = newEmptyNode(); params: openArray[PNimrodNode] = [newEmptyNode()];
-    body: PNimrodNode = newStmtList(), procType = nnkProcDef): PNimrodNode {.compileTime.} =
+proc newProc*(name = newEmptyNode(); params: openArray[NimNode] = [newEmptyNode()];
+    body: NimNode = newStmtList(), procType = nnkProcDef): NimNode {.compileTime.} =
   ## shortcut for creating a new proc
   ##
   ## The ``params`` array must start with the return type of the proc,
@@ -600,8 +598,8 @@ proc newProc*(name = newEmptyNode(); params: openArray[PNimrodNode] = [newEmptyN
     newEmptyNode(),
     body)
 
-proc newIfStmt*(branches: varargs[tuple[cond, body: PNimrodNode]]):
-                PNimrodNode {.compiletime.} =
+proc newIfStmt*(branches: varargs[tuple[cond, body: NimNode]]):
+                NimNode {.compiletime.} =
   ## Constructor for ``if`` statements.
   ##
   ## .. code-block:: nim
@@ -616,35 +614,35 @@ proc newIfStmt*(branches: varargs[tuple[cond, body: PNimrodNode]]):
     result.add(newNimNode(nnkElifBranch).add(i.cond, i.body))
 
 
-proc copyChildrenTo*(src, dest: PNimrodNode) {.compileTime.}=
+proc copyChildrenTo*(src, dest: NimNode) {.compileTime.}=
   ## Copy all children from `src` to `dest`
   for i in 0 .. < src.len:
     dest.add src[i].copyNimTree
 
-template expectRoutine(node: PNimrodNode): stmt =
+template expectRoutine(node: NimNode): stmt =
   expectKind(node, RoutineNodes)
 
-proc name*(someProc: PNimrodNode): PNimrodNode {.compileTime.} =
+proc name*(someProc: NimNode): NimNode {.compileTime.} =
   someProc.expectRoutine
   result = someProc[0]
-proc `name=`*(someProc: PNimrodNode; val: PNimrodNode) {.compileTime.} =
+proc `name=`*(someProc: NimNode; val: NimNode) {.compileTime.} =
   someProc.expectRoutine
   someProc[0] = val
 
-proc params*(someProc: PNimrodNode): PNimrodNode {.compileTime.} =
+proc params*(someProc: NimNode): NimNode {.compileTime.} =
   someProc.expectRoutine
   result = someProc[3]
-proc `params=`* (someProc: PNimrodNode; params: PNimrodNode) {.compileTime.}=
+proc `params=`* (someProc: NimNode; params: NimNode) {.compileTime.}=
   someProc.expectRoutine
   assert params.kind == nnkFormalParams
   someProc[3] = params
 
-proc pragma*(someProc: PNimrodNode): PNimrodNode {.compileTime.} =
+proc pragma*(someProc: NimNode): NimNode {.compileTime.} =
   ## Get the pragma of a proc type
   ## These will be expanded
   someProc.expectRoutine
   result = someProc[4]
-proc `pragma=`*(someProc: PNimrodNode; val: PNimrodNode){.compileTime.}=
+proc `pragma=`*(someProc: NimNode; val: NimNode){.compileTime.}=
   ## Set the pragma of a proc type
   someProc.expectRoutine
   assert val.kind in {nnkEmpty, nnkPragma}
@@ -654,7 +652,7 @@ proc `pragma=`*(someProc: PNimrodNode; val: PNimrodNode){.compileTime.}=
 template badNodeKind(k; f): stmt{.immediate.} =
   assert false, "Invalid node kind " & $k & " for macros.`" & $f & "`"
 
-proc body*(someProc: PNimrodNode): PNimrodNode {.compileTime.} =
+proc body*(someProc: NimNode): NimNode {.compileTime.} =
   case someProc.kind:
   of RoutineNodes:
     return someProc[6]
@@ -665,7 +663,7 @@ proc body*(someProc: PNimrodNode): PNimrodNode {.compileTime.} =
   else:
     badNodeKind someProc.kind, "body"
 
-proc `body=`*(someProc: PNimrodNode, val: PNimrodNode) {.compileTime.} =
+proc `body=`*(someProc: NimNode, val: NimNode) {.compileTime.} =
   case someProc.kind
   of RoutineNodes:
     someProc[6] = val
@@ -676,10 +674,10 @@ proc `body=`*(someProc: PNimrodNode, val: PNimrodNode) {.compileTime.} =
   else:
     badNodeKind someProc.kind, "body="
 
-proc basename*(a: PNimrodNode): PNimrodNode {.compiletime, benign.}
+proc basename*(a: NimNode): NimNode {.compiletime, benign.}
 
 
-proc `$`*(node: PNimrodNode): string {.compileTime.} =
+proc `$`*(node: NimNode): string {.compileTime.} =
   ## Get the string of an identifier node
   case node.kind
   of nnkIdent:
@@ -693,14 +691,14 @@ proc `$`*(node: PNimrodNode): string {.compileTime.} =
   else:
     badNodeKind node.kind, "$"
 
-proc ident*(name: string): PNimrodNode {.compileTime,inline.} = newIdentNode(name)
+proc ident*(name: string): NimNode {.compileTime,inline.} = newIdentNode(name)
   ## Create a new ident node from a string
 
-iterator children*(n: PNimrodNode): PNimrodNode {.inline.}=
+iterator children*(n: NimNode): NimNode {.inline.}=
   for i in 0 .. high(n):
     yield n[i]
 
-template findChild*(n: PNimrodNode; cond: expr): PNimrodNode {.
+template findChild*(n: NimNode; cond: expr): NimNode {.
   immediate, dirty.} =
   ## Find the first child node matching condition (or nil).
   ##
@@ -708,14 +706,14 @@ template findChild*(n: PNimrodNode; cond: expr): PNimrodNode {.
   ##   var res = findChild(n, it.kind == nnkPostfix and
   ##                          it.basename.ident == !"foo")
   block:
-    var result: PNimrodNode
+    var result: NimNode
     for it in n.children:
       if cond:
         result = it
         break
     result
 
-proc insert*(a: PNimrodNode; pos: int; b: PNimrodNode) {.compileTime.} =
+proc insert*(a: NimNode; pos: int; b: NimNode) {.compileTime.} =
   ## Insert node B into A at pos
   if high(a) < pos:
     ## add some empty nodes first
@@ -730,47 +728,47 @@ proc insert*(a: PNimrodNode; pos: int; b: PNimrodNode) {.compileTime.} =
       a[i + 1] = a[i]
     a[pos] = b
 
-proc basename*(a: PNimrodNode): PNimrodNode =
+proc basename*(a: NimNode): NimNode =
   ## Pull an identifier from prefix/postfix expressions
   case a.kind
   of nnkIdent: return a
   of nnkPostfix, nnkPrefix: return a[1]
   else:
-    quit "Do not know how to get basename of ("& treeRepr(a) &")\n"& repr(a)
+    quit "Do not know how to get basename of (" & treeRepr(a) & ")\n" & repr(a)
 
-proc `basename=`*(a: PNimrodNode; val: string) {.compileTime.}=
+proc `basename=`*(a: NimNode; val: string) {.compileTime.}=
   case a.kind
   of nnkIdent: macros.`ident=`(a,  !val)
   of nnkPostfix, nnkPrefix: a[1] = ident(val)
   else:
-    quit "Do not know how to get basename of ("& treeRepr(a)& ")\n"& repr(a)
+    quit "Do not know how to get basename of (" & treeRepr(a) & ")\n" & repr(a)
 
-proc postfix*(node: PNimrodNode; op: string): PNimrodNode {.compileTime.} =
+proc postfix*(node: NimNode; op: string): NimNode {.compileTime.} =
   newNimNode(nnkPostfix).add(ident(op), node)
 
-proc prefix*(node: PNimrodNode; op: string): PNimrodNode {.compileTime.} =
+proc prefix*(node: NimNode; op: string): NimNode {.compileTime.} =
   newNimNode(nnkPrefix).add(ident(op), node)
 
-proc infix*(a: PNimrodNode; op: string;
-            b: PNimrodNode): PNimrodNode {.compileTime.} =
+proc infix*(a: NimNode; op: string;
+            b: NimNode): NimNode {.compileTime.} =
   newNimNode(nnkInfix).add(ident(op), a, b)
 
-proc unpackPostfix*(node: PNimrodNode): tuple[node: PNimrodNode; op: string] {.
+proc unpackPostfix*(node: NimNode): tuple[node: NimNode; op: string] {.
   compileTime.} =
   node.expectKind nnkPostfix
   result = (node[0], $node[1])
 
-proc unpackPrefix*(node: PNimrodNode): tuple[node: PNimrodNode; op: string] {.
+proc unpackPrefix*(node: NimNode): tuple[node: NimNode; op: string] {.
   compileTime.} =
   node.expectKind nnkPrefix
   result = (node[0], $node[1])
 
-proc unpackInfix*(node: PNimrodNode): tuple[left: PNimrodNode; op: string;
-                                        right: PNimrodNode] {.compileTime.} =
+proc unpackInfix*(node: NimNode): tuple[left: NimNode; op: string;
+                                        right: NimNode] {.compileTime.} =
   assert node.kind == nnkInfix
   result = (node[0], $node[1], node[2])
 
-proc copy*(node: PNimrodNode): PNimrodNode {.compileTime.} =
+proc copy*(node: NimNode): NimNode {.compileTime.} =
   ## An alias for copyNimTree().
   return node.copyNimTree()
 
@@ -793,7 +791,7 @@ proc cmpIgnoreStyle(a, b: cstring): int {.noSideEffect.} =
 proc eqIdent* (a, b: string): bool = cmpIgnoreStyle(a, b) == 0
   ## Check if two idents are identical.
 
-proc hasArgOfName* (params: PNimrodNode; name: string): bool {.compiletime.}=
+proc hasArgOfName* (params: NimNode; name: string): bool {.compiletime.}=
   ## Search nnkFormalParams for an argument.
   assert params.kind == nnkFormalParams
   for i in 1 .. <params.len:
@@ -801,7 +799,7 @@ proc hasArgOfName* (params: PNimrodNode; name: string): bool {.compiletime.}=
     if name.eqIdent( $ node[0]):
       return true
 
-proc addIdentIfAbsent*(dest: PNimrodNode, ident: string) {.compiletime.} =
+proc addIdentIfAbsent*(dest: NimNode, ident: string) {.compiletime.} =
   ## Add ident to dest if it is not present. This is intended for use
   ## with pragmas.
   for node in dest.children:
@@ -825,5 +823,3 @@ when not defined(booting):
     macro payload: stmt {.gensym.} =
       result = parseStmt(e)
     payload()
-
-{.pop.}
diff --git a/lib/impure/db_mysql.nim b/lib/impure/db_mysql.nim
index dab84c2d5..b8180cd87 100644
--- a/lib/impure/db_mysql.nim
+++ b/lib/impure/db_mysql.nim
@@ -229,3 +229,9 @@ proc open*(connection, user, password, database: string): TDbConn {.
     var errmsg = $mysql.error(result)
     db_mysql.close(result)
     dbError(errmsg)
+
+proc setEncoding*(connection: TDbConn, encoding: string): bool {.
+  tags: [FDb].} =
+  ## sets the encoding of a database connection, returns true for 
+  ## success, false for failure.
+  result = mysql.set_character_set(connection, encoding) == 0
\ No newline at end of file
diff --git a/lib/impure/db_postgres.nim b/lib/impure/db_postgres.nim
index d8ccc4c16..ffb8bbcda 100644
--- a/lib/impure/db_postgres.nim
+++ b/lib/impure/db_postgres.nim
@@ -260,3 +260,9 @@ proc open*(connection, user, password, database: string): TDbConn {.
   ## the nim db api.
   result = pqsetdbLogin(nil, nil, nil, nil, database, user, password)
   if pqStatus(result) != CONNECTION_OK: dbError(result) # result = nil
+
+proc setEncoding*(connection: TDbConn, encoding: string): bool {.
+  tags: [FDb].} =
+  ## sets the encoding of a database connection, returns true for 
+  ## success, false for failure.
+  return pqsetClientEncoding(connection, encoding) == 0
\ No newline at end of file
diff --git a/lib/impure/db_sqlite.nim b/lib/impure/db_sqlite.nim
index bf1ce75ef..4be692f39 100644
--- a/lib/impure/db_sqlite.nim
+++ b/lib/impure/db_sqlite.nim
@@ -192,7 +192,19 @@ proc open*(connection, user, password, database: string): TDbConn {.
     result = db
   else:
     dbError(db)
-   
+
+proc setEncoding*(connection: TDbConn, encoding: string): bool {.
+  tags: [FDb].} =
+  ## sets the encoding of a database connection, returns true for 
+  ## success, false for failure.
+  ##
+  ## Note that the encoding cannot be changed once it's been set.
+  ## According to SQLite3 documentation, any attempt to change 
+  ## the encoding after the database is created will be silently 
+  ## ignored.
+  exec(connection, sql"PRAGMA encoding = ?", [encoding])
+  result = connection.getValue(sql"PRAGMA encoding") == encoding
+
 when isMainModule:
   var db = open("db.sql", "", "", "")
   exec(db, sql"create table tbl1(one varchar(10), two smallint)", [])
diff --git a/lib/impure/osinfo_posix.nim b/lib/impure/osinfo_posix.nim
index 0ed4289c4..0362fca12 100644
--- a/lib/impure/osinfo_posix.nim
+++ b/lib/impure/osinfo_posix.nim
@@ -1,77 +1,10 @@
-import posix, strutils, os
-
-when false:
-  type
-    Tstatfs {.importc: "struct statfs64", 
-              header: "<sys/statfs.h>", final, pure.} = object
-      f_type: int
-      f_bsize: int
-      f_blocks: int
-      f_bfree: int
-      f_bavail: int
-      f_files: int
-      f_ffree: int
-      f_fsid: int
-      f_namelen: int
-
-  proc statfs(path: string, buf: var Tstatfs): int {.
-    importc, header: "<sys/vfs.h>".}
-
-
-proc getSystemVersion*(): string =
-  result = ""
-  
-  var unix_info: TUtsname
-  
-  if uname(unix_info) != 0:
-    os.raiseOSError(osLastError())
-  
-  if $unix_info.sysname == "Linux":
-    # Linux
-    result.add("Linux ")
-
-    result.add($unix_info.release & " ")
-    result.add($unix_info.machine)
-  elif $unix_info.sysname == "Darwin":
-    # Darwin
-    result.add("Mac OS X ")
-    if "14" in $unix_info.release:
-      result.add("v10.10 Yosemite")
-    elif "13" in $unix_info.release:
-      result.add("v10.9 Mavericks")
-    elif "12" in $unix_info.release:
-      result.add("v10.8 Mountian Lion")
-    elif "11" in $unix_info.release:
-      result.add("v10.7 Lion")
-    elif "10" in $unix_info.release:
-      result.add("v10.6 Snow Leopard")
-    elif "9" in $unix_info.release:
-      result.add("v10.5 Leopard")
-    elif "8" in $unix_info.release:
-      result.add("v10.4 Tiger")
-    elif "7" in $unix_info.release:
-      result.add("v10.3 Panther")
-    elif "6" in $unix_info.release:
-      result.add("v10.2 Jaguar")
-    elif "1.4" in $unix_info.release:
-      result.add("v10.1 Puma")
-    elif "1.3" in $unix_info.release:
-      result.add("v10.0 Cheetah")
-    elif "0" in $unix_info.release:
-      result.add("Server 1.0 Hera")
-  else:
-    result.add($unix_info.sysname & " " & $unix_info.release)
-    
-    
-when false:
-  var unix_info: TUtsname
-  echo(uname(unix_info))
-  echo(unix_info.sysname)
-  echo("8" in $unix_info.release)
-
-  echo(getSystemVersion())
-
-  var stfs: TStatfs
-  echo(statfs("sysinfo_posix.nim", stfs))
-  echo(stfs.f_files)
-  
+#
+#
+#            Nim's Runtime Library
+#        (c) Copyright 2015 Dominik Picheta
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+{.error: "This module has been moved to the 'osinfo' nimble package.".}
diff --git a/lib/impure/osinfo_win.nim b/lib/impure/osinfo_win.nim
index 94a27eb03..0362fca12 100644
--- a/lib/impure/osinfo_win.nim
+++ b/lib/impure/osinfo_win.nim
@@ -1,411 +1,10 @@
-# XXX clean up this mess!
-
-import winlean
-
-const
-  INVALID_HANDLE_VALUE = int(- 1) # GetStockObject
-
-type
-  TMEMORYSTATUSEX {.final, pure.} = object
-    dwLength: int32
-    dwMemoryLoad: int32
-    ullTotalPhys: int64
-    ullAvailPhys: int64
-    ullTotalPageFile: int64
-    ullAvailPageFile: int64
-    ullTotalVirtual: int64
-    ullAvailVirtual: int64
-    ullAvailExtendedVirtual: int64
-    
-  SYSTEM_INFO* {.final, pure.} = object
-    wProcessorArchitecture*: int16
-    wReserved*: int16
-    dwPageSize*: int32
-    lpMinimumApplicationAddress*: pointer
-    lpMaximumApplicationAddress*: pointer
-    dwActiveProcessorMask*: int32
-    dwNumberOfProcessors*: int32
-    dwProcessorType*: int32
-    dwAllocationGranularity*: int32
-    wProcessorLevel*: int16
-    wProcessorRevision*: int16
-
-  LPSYSTEM_INFO* = ptr SYSTEM_INFO
-  TSYSTEMINFO* = SYSTEM_INFO
-
-  TMemoryInfo* = object
-    MemoryLoad*: int ## occupied memory, in percent
-    TotalPhysMem*: int64 ## Total Physical memory, in bytes
-    AvailablePhysMem*: int64 ## Available physical memory, in bytes
-    TotalPageFile*: int64 ## The current committed memory limit 
-                          ## for the system or the current process, whichever is smaller, in bytes.
-    AvailablePageFile*: int64 ## The maximum amount of memory the current process can commit, in bytes.
-    TotalVirtualMem*: int64 ## Total virtual memory, in bytes
-    AvailableVirtualMem*: int64 ## Available virtual memory, in bytes
-    
-  TOSVERSIONINFOEX {.final, pure.} = object
-    dwOSVersionInfoSize: int32
-    dwMajorVersion: int32
-    dwMinorVersion: int32
-    dwBuildNumber: int32
-    dwPlatformId: int32
-    szCSDVersion: array[0..127, char]
-    wServicePackMajor: int16
-    wServicePackMinor: int16
-    wSuiteMask: int16
-    wProductType: int8
-    wReserved: char
-    
-  TVersionInfo* = object
-    majorVersion*: int
-    minorVersion*: int
-    buildNumber*: int
-    platformID*: int
-    SPVersion*: string ## Full Service pack version string
-    SPMajor*: int ## Major service pack version
-    SPMinor*: int ## Minor service pack version
-    SuiteMask*: int
-    ProductType*: int
-    
-  TPartitionInfo* = tuple[FreeSpace, TotalSpace: Tfiletime]
-  
-const
-  # SuiteMask - VersionInfo.SuiteMask
-  VER_SUITE_BACKOFFICE* = 0x00000004
-  VER_SUITE_BLADE* = 0x00000400
-  VER_SUITE_COMPUTE_SERVER* = 0x00004000
-  VER_SUITE_DATACENTER* = 0x00000080
-  VER_SUITE_ENTERPRISE* = 0x00000002
-  VER_SUITE_EMBEDDEDNT* = 0x00000040
-  VER_SUITE_PERSONAL* = 0x00000200
-  VER_SUITE_SINGLEUSERTS* = 0x00000100
-  VER_SUITE_SMALLBUSINESS* = 0x00000001
-  VER_SUITE_SMALLBUSINESS_RESTRICTED* = 0x00000020
-  VER_SUITE_STORAGE_SERVER* = 0x00002000
-  VER_SUITE_TERMINAL* = 0x00000010
-  VER_SUITE_WH_SERVER* = 0x00008000
-
-  # ProductType - VersionInfo.ProductType
-  VER_NT_DOMAIN_CONTROLLER* = 0x0000002
-  VER_NT_SERVER* = 0x0000003
-  VER_NT_WORKSTATION* = 0x0000001
-  
-  VER_PLATFORM_WIN32_NT* = 2
-  
-  # Product Info - getProductInfo() - (Remove unused ones ?)
-  PRODUCT_BUSINESS* = 0x00000006
-  PRODUCT_BUSINESS_N* = 0x00000010
-  PRODUCT_CLUSTER_SERVER* = 0x00000012
-  PRODUCT_DATACENTER_SERVER* = 0x00000008
-  PRODUCT_DATACENTER_SERVER_CORE* = 0x0000000C
-  PRODUCT_DATACENTER_SERVER_CORE_V* = 0x00000027
-  PRODUCT_DATACENTER_SERVER_V* = 0x00000025
-  PRODUCT_ENTERPRISE* = 0x00000004
-  PRODUCT_ENTERPRISE_E* = 0x00000046
-  PRODUCT_ENTERPRISE_N* = 0x0000001B
-  PRODUCT_ENTERPRISE_SERVER* = 0x0000000A
-  PRODUCT_ENTERPRISE_SERVER_CORE* = 0x0000000E
-  PRODUCT_ENTERPRISE_SERVER_CORE_V* = 0x00000029
-  PRODUCT_ENTERPRISE_SERVER_IA64* = 0x0000000F
-  PRODUCT_ENTERPRISE_SERVER_V* = 0x00000026
-  PRODUCT_HOME_BASIC* = 0x00000002
-  PRODUCT_HOME_BASIC_E* = 0x00000043
-  PRODUCT_HOME_BASIC_N* = 0x00000005
-  PRODUCT_HOME_PREMIUM* = 0x00000003
-  PRODUCT_HOME_PREMIUM_E* = 0x00000044
-  PRODUCT_HOME_PREMIUM_N* = 0x0000001A
-  PRODUCT_HYPERV* = 0x0000002A
-  PRODUCT_MEDIUMBUSINESS_SERVER_MANAGEMENT* = 0x0000001E
-  PRODUCT_MEDIUMBUSINESS_SERVER_MESSAGING* = 0x00000020
-  PRODUCT_MEDIUMBUSINESS_SERVER_SECURITY* = 0x0000001F
-  PRODUCT_PROFESSIONAL* = 0x00000030
-  PRODUCT_PROFESSIONAL_E* = 0x00000045
-  PRODUCT_PROFESSIONAL_N* = 0x00000031
-  PRODUCT_SERVER_FOR_SMALLBUSINESS* = 0x00000018
-  PRODUCT_SERVER_FOR_SMALLBUSINESS_V* = 0x00000023
-  PRODUCT_SERVER_FOUNDATION* = 0x00000021
-  PRODUCT_SMALLBUSINESS_SERVER* = 0x00000009
-  PRODUCT_STANDARD_SERVER* = 0x00000007
-  PRODUCT_STANDARD_SERVER_CORE * = 0x0000000D
-  PRODUCT_STANDARD_SERVER_CORE_V* = 0x00000028
-  PRODUCT_STANDARD_SERVER_V* = 0x00000024
-  PRODUCT_STARTER* = 0x0000000B
-  PRODUCT_STARTER_E* = 0x00000042
-  PRODUCT_STARTER_N* = 0x0000002F
-  PRODUCT_STORAGE_ENTERPRISE_SERVER* = 0x00000017
-  PRODUCT_STORAGE_EXPRESS_SERVER* = 0x00000014
-  PRODUCT_STORAGE_STANDARD_SERVER* = 0x00000015
-  PRODUCT_STORAGE_WORKGROUP_SERVER* = 0x00000016
-  PRODUCT_UNDEFINED* = 0x00000000
-  PRODUCT_ULTIMATE* = 0x00000001
-  PRODUCT_ULTIMATE_E* = 0x00000047
-  PRODUCT_ULTIMATE_N* = 0x0000001C
-  PRODUCT_WEB_SERVER* = 0x00000011
-  PRODUCT_WEB_SERVER_CORE* = 0x0000001D
-  
-  PROCESSOR_ARCHITECTURE_AMD64* = 9 ## x64 (AMD or Intel)
-  PROCESSOR_ARCHITECTURE_IA64* = 6 ## Intel Itanium Processor Family (IPF)
-  PROCESSOR_ARCHITECTURE_INTEL* = 0 ## x86
-  PROCESSOR_ARCHITECTURE_UNKNOWN* = 0xffff ## Unknown architecture.
-  
-  # GetSystemMetrics
-  SM_SERVERR2 = 89 
-  
-proc globalMemoryStatusEx*(lpBuffer: var TMEMORYSTATUSEX){.stdcall, dynlib: "kernel32",
-    importc: "GlobalMemoryStatusEx".}
-    
-proc getMemoryInfo*(): TMemoryInfo =
-  ## Retrieves memory info
-  var statex: TMEMORYSTATUSEX
-  statex.dwLength = sizeof(statex).int32
-
-  globalMemoryStatusEx(statex)
-  result.MemoryLoad = statex.dwMemoryLoad
-  result.TotalPhysMem = statex.ullTotalPhys
-  result.AvailablePhysMem = statex.ullAvailPhys
-  result.TotalPageFile = statex.ullTotalPageFile
-  result.AvailablePageFile = statex.ullAvailPageFile
-  result.TotalVirtualMem = statex.ullTotalVirtual
-  result.AvailableVirtualMem = statex.ullAvailExtendedVirtual
-
-proc getVersionEx*(lpVersionInformation: var TOSVERSIONINFOEX): WINBOOL{.stdcall,
-    dynlib: "kernel32", importc: "GetVersionExA".}
-
-proc getProcAddress*(hModule: int, lpProcName: cstring): pointer{.stdcall,
-    dynlib: "kernel32", importc: "GetProcAddress".}
-
-proc getModuleHandleA*(lpModuleName: cstring): int{.stdcall,
-     dynlib: "kernel32", importc: "GetModuleHandleA".}
-
-proc getVersionInfo*(): TVersionInfo =
-  ## Retrieves operating system info
-  var osvi: TOSVERSIONINFOEX
-  osvi.dwOSVersionInfoSize = sizeof(osvi).int32
-  discard getVersionEx(osvi)
-  result.majorVersion = osvi.dwMajorVersion
-  result.minorVersion = osvi.dwMinorVersion
-  result.buildNumber = osvi.dwBuildNumber
-  result.platformID = osvi.dwPlatformId
-  result.SPVersion = $osvi.szCSDVersion
-  result.SPMajor = osvi.wServicePackMajor
-  result.SPMinor = osvi.wServicePackMinor
-  result.SuiteMask = osvi.wSuiteMask
-  result.ProductType = osvi.wProductType
-
-proc getProductInfo*(majorVersion, minorVersion, SPMajorVersion, 
-                     SPMinorVersion: int): int =
-  ## Retrieves Windows' ProductInfo, this function only works in Vista and 7
-  var pGPI = cast[proc (dwOSMajorVersion, dwOSMinorVersion, 
-              dwSpMajorVersion, dwSpMinorVersion: int32, outValue: Pint32){.stdcall.}](getProcAddress(
-                getModuleHandleA("kernel32.dll"), "GetProductInfo"))
-                
-  if pGPI != nil:
-    var dwType: int32
-    pGPI(int32(majorVersion), int32(minorVersion), int32(SPMajorVersion), int32(SPMinorVersion), addr(dwType))
-    result = int(dwType)
-  else:
-    return PRODUCT_UNDEFINED
-
-proc getSystemInfo*(lpSystemInfo: LPSYSTEM_INFO){.stdcall, dynlib: "kernel32",
-    importc: "GetSystemInfo".}
-    
-proc getSystemInfo*(): TSYSTEM_INFO =
-  ## Returns the SystemInfo
-
-  # Use GetNativeSystemInfo if it's available
-  var pGNSI = cast[proc (lpSystemInfo: LPSYSTEM_INFO){.stdcall.}](getProcAddress(
-                getModuleHandleA("kernel32.dll"), "GetNativeSystemInfo"))
-                
-  var systemi: TSYSTEM_INFO              
-  if pGNSI != nil:
-    pGNSI(addr(systemi))
-  else:
-    getSystemInfo(addr(systemi))
-
-  return systemi
-
-proc getSystemMetrics*(nIndex: int32): int32{.stdcall, dynlib: "user32",
-    importc: "GetSystemMetrics".}
-
-proc `$`*(osvi: TVersionInfo): string =
-  ## Turns a VersionInfo object, into a string
-
-  if osvi.platformID == VER_PLATFORM_WIN32_NT and osvi.majorVersion > 4:
-    result = "Microsoft "
-    
-    var si = getSystemInfo()
-    # Test for the specific product
-    if osvi.majorVersion == 6:
-      if osvi.minorVersion == 0:
-        if osvi.ProductType == VER_NT_WORKSTATION:
-          result.add("Windows Vista ")
-        else: result.add("Windows Server 2008 ")
-      elif osvi.minorVersion == 1:
-        if osvi.ProductType == VER_NT_WORKSTATION:
-          result.add("Windows 7 ")
-        else: result.add("Windows Server 2008 R2 ")
-      elif osvi.minorVersion == 2:
-        if osvi.ProductType == VER_NT_WORKSTATION:
-          result.add("Windows 8 ")
-        else: result.add("Windows Server 2012 ")
-      elif osvi.minorVersion == 3:
-        if osvi.ProductType == VER_NT_WORKSTATION:
-          result.add("Windows 8.1 ")
-        else: result.add("Windows Server 2012 R2 ")
-    
-      var dwType = getProductInfo(osvi.majorVersion, osvi.minorVersion, 0, 0)
-      case dwType
-      of PRODUCT_ULTIMATE:
-        result.add("Ultimate Edition")
-      of PRODUCT_PROFESSIONAL:
-        result.add("Professional")
-      of PRODUCT_HOME_PREMIUM:
-        result.add("Home Premium Edition")
-      of PRODUCT_HOME_BASIC:
-        result.add("Home Basic Edition")
-      of PRODUCT_ENTERPRISE:
-        result.add("Enterprise Edition")
-      of PRODUCT_BUSINESS:
-        result.add("Business Edition")
-      of PRODUCT_STARTER:
-        result.add("Starter Edition")
-      of PRODUCT_CLUSTER_SERVER:
-        result.add("Cluster Server Edition")
-      of PRODUCT_DATACENTER_SERVER:
-        result.add("Datacenter Edition")
-      of PRODUCT_DATACENTER_SERVER_CORE:
-        result.add("Datacenter Edition (core installation)")
-      of PRODUCT_ENTERPRISE_SERVER:
-        result.add("Enterprise Edition")
-      of PRODUCT_ENTERPRISE_SERVER_CORE:
-        result.add("Enterprise Edition (core installation)")
-      of PRODUCT_ENTERPRISE_SERVER_IA64:
-        result.add("Enterprise Edition for Itanium-based Systems")
-      of PRODUCT_SMALLBUSINESS_SERVER:
-        result.add("Small Business Server")
-      of PRODUCT_STANDARD_SERVER:
-        result.add("Standard Edition")
-      of PRODUCT_STANDARD_SERVER_CORE:
-        result.add("Standard Edition (core installation)")
-      of PRODUCT_WEB_SERVER:
-        result.add("Web Server Edition")
-      else:
-        discard
-    # End of Windows 6.*
-
-    if osvi.majorVersion == 5 and osvi.minorVersion == 2:
-      if getSystemMetrics(SM_SERVERR2) != 0:
-        result.add("Windows Server 2003 R2, ")
-      elif (osvi.SuiteMask and VER_SUITE_PERSONAL) != 0: # Not sure if this will work
-        result.add("Windows Storage Server 2003")
-      elif (osvi.SuiteMask and VER_SUITE_WH_SERVER) != 0:
-        result.add("Windows Home Server")
-      elif osvi.ProductType == VER_NT_WORKSTATION and 
-          si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64:
-        result.add("Windows XP Professional x64 Edition")
-      else:
-        result.add("Windows Server 2003, ")
-      
-      # Test for the specific product
-      if osvi.ProductType != VER_NT_WORKSTATION:
-        if ze(si.wProcessorArchitecture) == PROCESSOR_ARCHITECTURE_IA64:
-          if (osvi.SuiteMask and VER_SUITE_DATACENTER) != 0:
-            result.add("Datacenter Edition for Itanium-based Systems")
-          elif (osvi.SuiteMask and VER_SUITE_ENTERPRISE) != 0:
-            result.add("Enterprise Edition for Itanium-based Systems")
-        elif ze(si.wProcessorArchitecture) == PROCESSOR_ARCHITECTURE_AMD64:
-          if (osvi.SuiteMask and VER_SUITE_DATACENTER) != 0:
-            result.add("Datacenter x64 Edition")
-          elif (osvi.SuiteMask and VER_SUITE_ENTERPRISE) != 0:
-            result.add("Enterprise x64 Edition")
-          else:
-            result.add("Standard x64 Edition")
-        else:
-          if (osvi.SuiteMask and VER_SUITE_COMPUTE_SERVER) != 0:
-            result.add("Compute Cluster Edition")
-          elif (osvi.SuiteMask and VER_SUITE_DATACENTER) != 0:
-            result.add("Datacenter Edition")
-          elif (osvi.SuiteMask and VER_SUITE_ENTERPRISE) != 0:
-            result.add("Enterprise Edition")
-          elif (osvi.SuiteMask and VER_SUITE_BLADE) != 0:
-            result.add("Web Edition")
-          else:
-            result.add("Standard Edition")
-    # End of 5.2
-    
-    if osvi.majorVersion == 5 and osvi.minorVersion == 1:
-      result.add("Windows XP ")
-      if (osvi.SuiteMask and VER_SUITE_PERSONAL) != 0:
-        result.add("Home Edition")
-      else:
-        result.add("Professional")
-    # End of 5.1
-    
-    if osvi.majorVersion == 5 and osvi.minorVersion == 0:
-      result.add("Windows 2000 ")
-      if osvi.ProductType == VER_NT_WORKSTATION:
-        result.add("Professional")
-      else:
-        if (osvi.SuiteMask and VER_SUITE_DATACENTER) != 0:
-          result.add("Datacenter Server")
-        elif (osvi.SuiteMask and VER_SUITE_ENTERPRISE) != 0:
-          result.add("Advanced Server")
-        else:
-          result.add("Server")
-    # End of 5.0
-    
-    # Include service pack (if any) and build number.
-    if len(osvi.SPVersion) > 0:
-      result.add(" ")
-      result.add(osvi.SPVersion)
-    
-    result.add(" (build " & $osvi.buildNumber & ")")
-    
-    if osvi.majorVersion >= 6:
-      if ze(si.wProcessorArchitecture) == PROCESSOR_ARCHITECTURE_AMD64:
-        result.add(", 64-bit")
-      elif ze(si.wProcessorArchitecture) == PROCESSOR_ARCHITECTURE_INTEL:
-        result.add(", 32-bit")
-    
-  else:
-    # Windows 98 etc...
-    result = "Unknown version of windows[Kernel version <= 4]"
-    
-
-proc getFileSize*(file: string): BiggestInt =
-  var fileData: TWIN32_FIND_DATA
-
-  when useWinUnicode:
-    var aa = newWideCString(file)
-    var hFile = findFirstFileW(aa, fileData)
-  else:
-    var hFile = findFirstFileA(file, fileData)
-  
-  if hFile == INVALID_HANDLE_VALUE:
-    raise newException(IOError, $getLastError())
-  
-  return fileData.nFileSizeLow
-
-proc getDiskFreeSpaceEx*(lpDirectoryName: cstring, lpFreeBytesAvailableToCaller,
-                         lpTotalNumberOfBytes,
-                         lpTotalNumberOfFreeBytes: var TFiletime): WINBOOL{.
-    stdcall, dynlib: "kernel32", importc: "GetDiskFreeSpaceExA".}
-
-proc getPartitionInfo*(partition: string): TPartitionInfo =
-  ## Retrieves partition info, for example ``partition`` may be ``"C:\"``
-  var freeBytes, totalBytes, totalFreeBytes: TFiletime 
-  discard getDiskFreeSpaceEx(r"C:\", freeBytes, totalBytes, 
-                               totalFreeBytes)
-  return (freeBytes, totalBytes)
-
-when isMainModule:
-  var r = getMemoryInfo()
-  echo("Memory load: ", r.MemoryLoad, "%")
-  
-  var osvi = getVersionInfo()
-  
-  echo($osvi)
-
-  echo(getFileSize(r"lib\impure\osinfo_win.nim") div 1024, " KB")
-  
-  echo(rdFileTime(getPartitionInfo(r"C:\")[0]))
+#
+#
+#            Nim's Runtime Library
+#        (c) Copyright 2015 Dominik Picheta
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+{.error: "This module has been moved to the 'osinfo' nimble package.".}
diff --git a/lib/impure/re.nim b/lib/impure/re.nim
index 921a24fd1..91381bda3 100644
--- a/lib/impure/re.nim
+++ b/lib/impure/re.nim
@@ -36,25 +36,25 @@ const
 type
   RegexFlag* = enum     ## options for regular expressions
     reIgnoreCase = 0,    ## do caseless matching
-    reMultiLine = 1,     ## ``^`` and ``$`` match newlines within data 
+    reMultiLine = 1,     ## ``^`` and ``$`` match newlines within data
     reDotAll = 2,        ## ``.`` matches anything including NL
     reExtended = 3,      ## ignore whitespace and ``#`` comments
     reStudy = 4          ## study the expression (may be omitted if the
                          ## expression will be used only once)
-    
-  RegexDesc = object 
+
+  RegexDesc = object
     h: PPcre
     e: ptr TExtra
-    
+
   Regex* = ref RegexDesc ## a compiled regular expression
-    
+
   RegexError* = object of ValueError
     ## is raised if the pattern is no valid regular expression.
 
 {.deprecated: [TRegexFlag: RegexFlag, TRegexDesc: RegexDesc, TRegex: Regex,
     EInvalidRegEx: RegexError].}
 
-proc raiseInvalidRegex(msg: string) {.noinline, noreturn.} = 
+proc raiseInvalidRegex(msg: string) {.noinline, noreturn.} =
   var e: ref RegexError
   new(e)
   e.msg = msg
@@ -68,10 +68,10 @@ proc rawCompile(pattern: string, flags: cint): PPcre =
   if result == nil:
     raiseInvalidRegex($msg & "\n" & pattern & "\n" & spaces(offset) & "^\n")
 
-proc finalizeRegEx(x: Regex) = 
+proc finalizeRegEx(x: Regex) =
   # 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. 
+  # Fortunately the implementation is unlikely to change.
   pcre.free_substring(cast[cstring](x.h))
   if not isNil(x.e):
     pcre.free_substring(cast[cstring](x.e))
@@ -101,10 +101,10 @@ proc matchOrFind(s: string, pattern: Regex, matches: var openArray[string],
     if a >= 0'i32: matches[i-1] = substr(s, int(a), int(b)-1)
     else: matches[i-1] = nil
   return rawMatches[1] - rawMatches[0]
-  
+
 proc findBounds*(s: string, pattern: Regex, matches: var openArray[string],
                  start = 0): tuple[first, last: int] =
-  ## returns the starting position and end position of `pattern` in `s` 
+  ## returns the starting position and end position of `pattern` in `s`
   ## and the captured
   ## substrings in the array `matches`. If it does not match, nothing
   ## is written into `matches` and ``(-1,0)`` is returned.
@@ -120,12 +120,12 @@ proc findBounds*(s: string, pattern: Regex, matches: var openArray[string],
     if a >= 0'i32: matches[i-1] = substr(s, int(a), int(b)-1)
     else: matches[i-1] = nil
   return (rawMatches[0].int, rawMatches[1].int - 1)
-  
-proc findBounds*(s: string, pattern: Regex, 
+
+proc findBounds*(s: string, pattern: Regex,
                  matches: var openArray[tuple[first, last: int]],
                  start = 0): tuple[first, last: int] =
-  ## returns the starting position and end position of ``pattern`` in ``s`` 
-  ## and the captured substrings in the array `matches`. 
+  ## returns the starting position and end position of ``pattern`` in ``s``
+  ## and the captured substrings in the array `matches`.
   ## If it does not match, nothing is written into `matches` and
   ## ``(-1,0)`` is returned.
   var
@@ -141,7 +141,7 @@ proc findBounds*(s: string, pattern: Regex,
     else: matches[i-1] = (-1,0)
   return (rawMatches[0].int, rawMatches[1].int - 1)
 
-proc findBounds*(s: string, pattern: Regex, 
+proc findBounds*(s: string, pattern: Regex,
                  start = 0): tuple[first, last: int] =
   ## returns the starting position of `pattern` in `s`. If it does not
   ## match, ``(-1,0)`` is returned.
@@ -152,7 +152,7 @@ proc findBounds*(s: string, pattern: Regex,
       cast[ptr cint](rawMatches), 3)
   if res < 0'i32: return (int(res), 0)
   return (int(rawMatches[0]), int(rawMatches[1]-1))
-  
+
 proc matchOrFind(s: string, pattern: Regex, start, flags: cint): cint =
   var
     rtarray = initRtArray[cint](3)
@@ -162,19 +162,6 @@ proc matchOrFind(s: string, pattern: Regex, start, flags: cint): cint =
   if result >= 0'i32:
     result = rawMatches[1] - rawMatches[0]
 
-proc match*(s: string, pattern: Regex, matches: var openArray[string],
-           start = 0): bool =
-  ## returns ``true`` if ``s[start..]`` matches the ``pattern`` and
-  ## the captured substrings in the array ``matches``. If it does not
-  ## match, nothing is written into ``matches`` and ``false`` is
-  ## returned.
-  return matchOrFind(s, pattern, matches, start.cint, 
-                     pcre.ANCHORED) == cint(s.len - start)
-
-proc match*(s: string, pattern: Regex, start = 0): bool =
-  ## returns ``true`` if ``s[start..]`` matches the ``pattern``.
-  return matchOrFind(s, pattern, start.cint, pcre.ANCHORED) == cint(s.len-start)
-
 proc matchLen*(s: string, pattern: Regex, matches: var openArray[string],
               start = 0): int =
   ## the same as ``match``, but it returns the length of the match,
@@ -185,9 +172,21 @@ proc matchLen*(s: string, pattern: Regex, matches: var openArray[string],
 proc matchLen*(s: string, pattern: Regex, start = 0): int =
   ## the same as ``match``, but it returns the length of the match,
   ## if there is no match, -1 is returned. Note that a match length
-  ## of zero can happen. 
+  ## of zero can happen.
   return matchOrFind(s, pattern, start.cint, pcre.ANCHORED)
 
+proc match*(s: string, pattern: Regex, start = 0): bool =
+  ## returns ``true`` if ``s[start..]`` matches the ``pattern``.
+  result = matchLen(s, pattern, start) != -1
+
+proc match*(s: string, pattern: Regex, matches: var openArray[string],
+           start = 0): bool =
+  ## returns ``true`` if ``s[start..]`` matches the ``pattern`` and
+  ## the captured substrings in the array ``matches``. If it does not
+  ## match, nothing is written into ``matches`` and ``false`` is
+  ## returned.
+  result = matchLen(s, pattern, matches, start) != -1
+
 proc find*(s: string, pattern: Regex, matches: var openArray[string],
            start = 0): int =
   ## returns the starting position of ``pattern`` in ``s`` and the captured
@@ -217,7 +216,7 @@ proc find*(s: string, pattern: Regex, start = 0): int =
   if res < 0'i32: return res
   return rawMatches[0]
 
-iterator findAll*(s: string, pattern: Regex, start = 0): string = 
+iterator findAll*(s: string, pattern: Regex, start = 0): string =
   ## Yields all matching *substrings* of `s` that match `pattern`.
   ##
   ## Note that since this is an iterator you should not modify the string you
@@ -232,10 +231,11 @@ iterator findAll*(s: string, pattern: Regex, start = 0): string =
     if res < 0'i32: break
     let a = rawMatches[0]
     let b = rawMatches[1]
+    if a == b and a == i: break
     yield substr(s, int(a), int(b)-1)
     i = b
 
-proc findAll*(s: string, pattern: Regex, start = 0): seq[string] = 
+proc findAll*(s: string, pattern: Regex, start = 0): seq[string] =
   ## returns all matching *substrings* of `s` that match `pattern`.
   ## If it does not match, @[] is returned.
   accumulateResult(findAll(s, pattern, start))
@@ -243,13 +243,13 @@ proc findAll*(s: string, pattern: Regex, start = 0): seq[string] =
 when not defined(nimhygiene):
   {.pragma: inject.}
 
-template `=~` *(s: string, pattern: Regex): expr = 
-  ## This calls ``match`` with an implicit declared ``matches`` array that 
-  ## can be used in the scope of the ``=~`` call: 
-  ## 
+template `=~` *(s: string, pattern: Regex): expr =
+  ## This calls ``match`` with an implicit declared ``matches`` array that
+  ## can be used in the scope of the ``=~`` call:
+  ##
   ## .. code-block:: nim
   ##
-  ##   if line =~ re"\s*(\w+)\s*\=\s*(\w+)": 
+  ##   if line =~ re"\s*(\w+)\s*\=\s*(\w+)":
   ##     # matches a key=value pair:
   ##     echo("Key: ", matches[0])
   ##     echo("Value: ", matches[1])
@@ -261,9 +261,9 @@ template `=~` *(s: string, pattern: Regex): expr =
   ##   else:
   ##     echo("syntax error")
   ##
-  bind MaxSubPatterns
+  bind MaxSubpatterns
   when not declaredInScope(matches):
-    var matches {.inject.}: array[0..MaxSubpatterns-1, string]
+    var matches {.inject.}: array[MaxSubpatterns, string]
   match(s, pattern, matches)
 
 # ------------------------- more string handling ------------------------------
@@ -287,7 +287,7 @@ proc endsWith*(s: string, suffix: Regex): bool =
     if matchLen(s, suffix, i) == s.len - i: return true
 
 proc replace*(s: string, sub: Regex, by = ""): string =
-  ## Replaces `sub` in `s` by the string `by`. Captures cannot be 
+  ## Replaces `sub` in `s` by the string `by`. Captures cannot be
   ## accessed in `by`. Examples:
   ##
   ## .. code-block:: nim
@@ -307,7 +307,7 @@ proc replace*(s: string, sub: Regex, by = ""): string =
     add(result, by)
     prev = match.last + 1
   add(result, substr(s, prev))
-  
+
 proc replacef*(s: string, sub: Regex, by: string): string =
   ## Replaces `sub` in `s` by the string `by`. Captures can be accessed in `by`
   ## with the notation ``$i`` and ``$#`` (see strutils.`%`). Examples:
@@ -321,7 +321,7 @@ proc replacef*(s: string, sub: Regex, by: string): string =
   ##
   ## "var1<-keykey; val2<-key2key2"
   result = ""
-  var caps: array[0..MaxSubpatterns-1, string]
+  var caps: array[MaxSubpatterns, string]
   var prev = 0
   while true:
     var match = findBounds(s, sub, caps, prev)
@@ -339,7 +339,7 @@ proc parallelReplace*(s: string, subs: openArray[
   ## applied in parallel.
   result = ""
   var i = 0
-  var caps: array[0..MaxSubpatterns-1, string]
+  var caps: array[MaxSubpatterns, string]
   while i < s.len:
     block searchSubs:
       for j in 0..high(subs):
@@ -360,7 +360,7 @@ proc transformFile*(infile, outfile: string,
   ## error occurs. This is supposed to be used for quick scripting.
   var x = readFile(infile).string
   writeFile(outfile, x.parallelReplace(subs))
-  
+
 iterator split*(s: string, sep: Regex): string =
   ## Splits the string `s` into substrings.
   ##
@@ -374,41 +374,44 @@ iterator split*(s: string, sep: Regex): string =
   ## Results in:
   ##
   ## .. code-block:: nim
+  ##   ""
   ##   "this"
   ##   "is"
   ##   "an"
   ##   "example"
+  ##   ""
   ##
   var
-    first = 0
-    last = 0
+    first = -1
+    last = -1
   while last < len(s):
     var x = matchLen(s, sep, last)
     if x > 0: inc(last, x)
     first = last
+    if x == 0: inc(last)
     while last < len(s):
-      inc(last)
       x = matchLen(s, sep, last)
-      if x > 0: break
-    if first < last:
+      if x >= 0: break
+      inc(last)
+    if first <= last:
       yield substr(s, first, last-1)
 
 proc split*(s: string, sep: Regex): seq[string] =
   ## Splits the string `s` into substrings.
   accumulateResult(split(s, sep))
-  
-proc escapeRe*(s: string): string = 
-  ## escapes `s` so that it is matched verbatim when used as a regular 
+
+proc escapeRe*(s: string): string =
+  ## escapes `s` so that it is matched verbatim when used as a regular
   ## expression.
   result = ""
   for c in items(s):
     case c
     of 'a'..'z', 'A'..'Z', '0'..'9', '_':
       result.add(c)
-    else: 
+    else:
       result.add("\\x")
       result.add(toHex(ord(c), 2))
-  
+
 const ## common regular expressions
   reIdentifier* = r"\b[a-zA-Z_]+[a-zA-Z_0-9]*\b"  ## describes an identifier
   reNatural* = r"\b\d+\b" ## describes a natural number
@@ -431,7 +434,7 @@ const ## common regular expressions
 when isMainModule:
   assert match("(a b c)", re"\( .* \)")
   assert match("WHiLe", re("while", {reIgnoreCase}))
-  
+
   assert "0158787".match(re"\d+")
   assert "ABC 0232".match(re"\w+\s+\d+")
   assert "ABC".match(re"\d+ | \w+")
@@ -440,21 +443,21 @@ when isMainModule:
 
   var pattern = re"[a-z0-9]+\s*=\s*[a-z0-9]+"
   assert matchLen("key1=  cal9", pattern) == 11
-  
+
   assert find("_____abc_______", re"abc") == 5
-  
-  var matches: array[0..5, string]
-  if match("abcdefg", re"c(d)ef(g)", matches, 2): 
+
+  var matches: array[6, string]
+  if match("abcdefg", re"c(d)ef(g)", matches, 2):
     assert matches[0] == "d"
     assert matches[1] == "g"
   else:
     assert false
-  
+
   if "abc" =~ re"(a)bcxyz|(\w+)":
     assert matches[1] == "abc"
   else:
     assert false
-  
+
   if "abc" =~ re"(cba)?.*":
     assert matches[0] == nil
   else: assert false
@@ -462,23 +465,35 @@ when isMainModule:
   if "abc" =~ re"().*":
     assert matches[0] == ""
   else: assert false
-    
+
   assert "var1=key; var2=key2".endsWith(re"\w+=\w+")
   assert("var1=key; var2=key2".replacef(re"(\w+)=(\w+)", "$1<-$2$2") ==
          "var1<-keykey; var2<-key2key2")
   assert("var1=key; var2=key2".replace(re"(\w+)=(\w+)", "$1<-$2$2") ==
          "$1<-$2$2; $1<-$2$2")
 
+  var accum: seq[string] = @[]
   for word in split("00232this02939is39an22example111", re"\d+"):
-    writeln(stdout, word)
+    accum.add(word)
+  assert(accum == @["", "this", "is", "an", "example", ""])
+
+  accum = @[]
+  for word in split("AAA :   : BBB", re"\s*:\s*"):
+    accum.add(word)
+  assert(accum == @["AAA", "", "BBB"])
 
   for x in findAll("abcdef", re"^{.}", 3):
     assert x == "d"
+  accum = @[]
   for x in findAll("abcdef", re".", 3):
-    echo x
+    accum.add(x)
+  assert(accum == @["d", "e", "f"])
+
+  assert("XYZ".find(re"^\d*") == 0)
+  assert("XYZ".match(re"^\d*") == true)
 
   block:
-    var matches: array[0..15, string]
+    var matches: array[16, string]
     if match("abcdefghijklmnop", re"(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)(l)(m)(n)(o)(p)", matches):
       for i in 0..matches.high:
         assert matches[i] == $chr(i + 'a'.ord)
diff --git a/lib/js/dom.nim b/lib/js/dom.nim
index 870213db3..94f4fa29c 100644
--- a/lib/js/dom.nim
+++ b/lib/js/dom.nim
@@ -36,8 +36,11 @@ type
     onsubmit*: proc (event: ref TEvent) {.nimcall.}
     onunload*: proc (event: ref TEvent) {.nimcall.}
 
-  TWindow* {.importc.} = object of TEventHandlers
-    document*: ref TDocument
+    addEventListener*: proc(ev: cstring, cb: proc(ev: ref TEvent), useCapture: bool = false) {.nimcall.}
+
+  Window* = ref WindowObj
+  WindowObj {.importc.} = object of TEventHandlers
+    document*: Document
     event*: ref TEvent
     history*: ref THistory
     location*: ref TLocation
@@ -55,7 +58,6 @@ type
     status*: cstring
     toolbar*: ref TToolBar
 
-    addEventListener*: proc(ev: cstring, cb: proc(ev: ref TEvent) ) {.nimcall.}
     alert*: proc (msg: cstring) {.nimcall.}
     back*: proc () {.nimcall.}
     blur*: proc () {.nimcall.}
@@ -66,7 +68,7 @@ type
     confirm*: proc (msg: cstring): bool {.nimcall.}
     disableExternalCapture*: proc () {.nimcall.}
     enableExternalCapture*: proc () {.nimcall.}
-    find*: proc (text: cstring, caseSensitive = false, 
+    find*: proc (text: cstring, caseSensitive = false,
                  backwards = false) {.nimcall.}
     focus*: proc () {.nimcall.}
     forward*: proc () {.nimcall.}
@@ -75,7 +77,7 @@ type
     moveBy*: proc (x, y: int) {.nimcall.}
     moveTo*: proc (x, y: int) {.nimcall.}
     open*: proc (uri, windowname: cstring,
-                 properties: cstring = nil): ref TWindow {.nimcall.}
+                 properties: cstring = nil): Window {.nimcall.}
     print*: proc () {.nimcall.}
     prompt*: proc (text, default: cstring): cstring {.nimcall.}
     releaseEvents*: proc (eventMask: int) {.nimcall.}
@@ -89,10 +91,65 @@ type
     stop*: proc () {.nimcall.}
     frames*: seq[TFrame]
 
-  TFrame* {.importc.} = object of TWindow
+  Frame* = ref FrameObj
+  FrameObj {.importc.} = object of WindowObj
+
+  ClassList* {.importc.} = object of RootObj
+    add*: proc (class: cstring) {.nimcall.}
+    remove*: proc (class: cstring) {.nimcall.}
+    contains*: proc (class: cstring):bool {.nimcall.}
+    toggle*: proc (class: cstring) {.nimcall.}
+
+  TNodeType* = enum
+    ElementNode = 1,
+    AttributeNode,
+    TextNode,
+    CDATANode,
+    EntityRefNode,
+    EntityNode,
+    ProcessingInstructionNode,
+    CommentNode,
+    DocumentNode,
+    DocumentTypeNode,
+    DocumentFragmentNode,
+    NotationNode
+
+  Node* = ref NodeObj
+  NodeObj {.importc.} = object of TEventHandlers
+    attributes*: seq[Node]
+    childNodes*: seq[Node]
+    children*: seq[Node]
+    data*: cstring
+    firstChild*: Node
+    lastChild*: Node
+    nextSibling*: Node
+    nodeName*: cstring
+    nodeType*: TNodeType
+    nodeValue*: cstring
+    parentNode*: Node
+    previousSibling*: Node
+    appendChild*: proc (child: Node) {.nimcall.}
+    appendData*: proc (data: cstring) {.nimcall.}
+    cloneNode*: proc (copyContent: bool): Node {.nimcall.}
+    deleteData*: proc (start, len: int) {.nimcall.}
+    getAttribute*: proc (attr: cstring): cstring {.nimcall.}
+    getAttributeNode*: proc (attr: cstring): Node {.nimcall.}
+    hasChildNodes*: proc (): bool {.nimcall.}
+    innerHTML*: cstring
+    insertBefore*: proc (newNode, before: Node) {.nimcall.}
+    insertData*: proc (position: int, data: cstring) {.nimcall.}
+    removeAttribute*: proc (attr: cstring) {.nimcall.}
+    removeAttributeNode*: proc (attr: Node) {.nimcall.}
+    removeChild*: proc (child: Node) {.nimcall.}
+    replaceChild*: proc (newNode, oldNode: Node) {.nimcall.}
+    replaceData*: proc (start, len: int, text: cstring) {.nimcall.}
+    scrollIntoView*: proc () {.nimcall.}
+    setAttribute*: proc (name, value: cstring) {.nimcall.}
+    setAttributeNode*: proc (attr: Node) {.nimcall.}
+    style*: ref TStyle
 
-  TDocument* {.importc.} = object of TEventHandlers
-    addEventListener*: proc(ev: cstring, cb: proc(ev: ref TEvent) ) {.nimcall.}
+  Document* = ref DocumentObj
+  DocumentObj {.importc.} = object of NodeObj
     alinkColor*: cstring
     bgColor*: cstring
     charset*: cstring
@@ -106,13 +163,13 @@ type
     URL*: cstring
     vlinkColor*: cstring
     captureEvents*: proc (eventMask: int) {.nimcall.}
-    createAttribute*: proc (identifier: cstring): ref TNode {.nimcall.}
-    createElement*: proc (identifier: cstring): ref TNode {.nimcall.}
-    createTextNode*: proc (identifier: cstring): ref TNode {.nimcall.}
-    getElementById*: proc (id: cstring): ref TNode {.nimcall.}
-    getElementsByName*: proc (name: cstring): seq[ref TNode] {.nimcall.}
-    getElementsByTagName*: proc (name: cstring): seq[ref TNode] {.nimcall.}
-    getElementsByClassName*: proc (name: cstring): seq[ref TNode] {.nimcall.}
+    createAttribute*: proc (identifier: cstring): Node {.nimcall.}
+    createElement*: proc (identifier: cstring): Element {.nimcall.}
+    createTextNode*: proc (identifier: cstring): Node {.nimcall.}
+    getElementById*: proc (id: cstring): Element {.nimcall.}
+    getElementsByName*: proc (name: cstring): seq[Element] {.nimcall.}
+    getElementsByTagName*: proc (name: cstring): seq[Element] {.nimcall.}
+    getElementsByClassName*: proc (name: cstring): seq[Element] {.nimcall.}
     getSelection*: proc (): cstring {.nimcall.}
     handleEvent*: proc (event: ref TEvent) {.nimcall.}
     open*: proc () {.nimcall.}
@@ -120,24 +177,43 @@ type
     routeEvent*: proc (event: ref TEvent) {.nimcall.}
     write*: proc (text: cstring) {.nimcall.}
     writeln*: proc (text: cstring) {.nimcall.}
-    anchors*: seq[ref TAnchor]
-    forms*: seq[ref TForm]
-    images*: seq[ref TImage]
+    anchors*: seq[AnchorElement]
+    forms*: seq[FormElement]
+    images*: seq[ImageElement]
     applets*: seq[ref TApplet]
-    embeds*: seq[ref TEmbed]
-    links*: seq[ref TLink]
+    embeds*: seq[EmbedElement]
+    links*: seq[LinkElement]
 
-  TLink* {.importc.} = object of RootObj
+  Element* = ref ElementObj
+  ElementObj {.importc.} = object of NodeObj
+    classList*: ref Classlist
+    checked*: bool
+    defaultChecked*: bool
+    defaultValue*: cstring
+    disabled*: bool
+    form*: FormElement
     name*: cstring
+    readOnly*: bool
+    blur*: proc () {.nimcall.}
+    click*: proc () {.nimcall.}
+    focus*: proc () {.nimcall.}
+    handleEvent*: proc (event: ref TEvent) {.nimcall.}
+    select*: proc () {.nimcall.}
+    options*: seq[OptionElement]
+    getElementsByTagName*: proc (name: cstring): seq[Element] {.nimcall.}
+    getElementsByClassName*: proc (name: cstring): seq[Element] {.nimcall.}
+
+  LinkElement* = ref LinkObj
+  LinkObj {.importc.} = object of ElementObj
     target*: cstring
     text*: cstring
     x*: int
     y*: int
 
-  TEmbed* {.importc.} = object of RootObj
+  EmbedElement* = ref EmbedObj
+  EmbedObj {.importc.} = object of ElementObj
     height*: int
     hspace*: int
-    name*: cstring
     src*: cstring
     width*: int
     `type`*: cstring
@@ -145,115 +221,42 @@ type
     play*: proc () {.nimcall.}
     stop*: proc () {.nimcall.}
 
-  TAnchor* {.importc.} = object of RootObj
-    name*: cstring
+  AnchorElement* = ref AnchorObj
+  AnchorObj {.importc.} = object of ElementObj
     text*: cstring
     x*, y*: int
 
   TApplet* {.importc.} = object of RootObj
 
-  TElement* {.importc.} = object of TEventHandlers
-    checked*: bool
-    defaultChecked*: bool
-    defaultValue*: cstring
-    disabled*: bool
-    form*: ref TForm
-    name*: cstring
-    readOnly*: bool
-    `type`*: cstring
-    value*: cstring
-    blur*: proc () {.nimcall.}
-    click*: proc () {.nimcall.}
-    focus*: proc () {.nimcall.}
-    handleEvent*: proc (event: ref TEvent) {.nimcall.}
-    select*: proc () {.nimcall.}
-    options*: seq[ref TOption]
-
-  TOption* {.importc.} = object of RootObj
+  OptionElement* = ref OptionObj
+  OptionObj {.importc.} = object of ElementObj
     defaultSelected*: bool
     selected*: bool
     selectedIndex*: int
     text*: cstring
     value*: cstring
 
-  TForm* {.importc.} = object of TEventHandlers
+  FormElement* = ref FormObj
+  FormObj {.importc.} = object of ElementObj
     action*: cstring
     encoding*: cstring
     `method`*: cstring
-    name*: cstring
     target*: cstring
-    handleEvent*: proc (event: ref TEvent) {.nimcall.}
     reset*: proc () {.nimcall.}
     submit*: proc () {.nimcall.}
-    elements*: seq[ref TElement]
+    elements*: seq[Element]
 
-  TImage* {.importc.} = object of TEventHandlers
+  ImageElement* = ref ImageObj
+  ImageObj {.importc.} = object of ElementObj
     border*: int
     complete*: bool
     height*: int
     hspace*: int
     lowsrc*: cstring
-    name*: cstring
     src*: cstring
     vspace*: int
     width*: int
-    handleEvent*: proc (event: ref TEvent) {.nimcall.}
 
-  ClassList* {.importc.} = object of RootObj
-    add*: proc (class: cstring) {.nimcall.}
-    remove*: proc (class: cstring) {.nimcall.}
-    contains*: proc (class: cstring):bool {.nimcall.}
-    toggle*: proc (class: cstring) {.nimcall.}
-
-  TNodeType* = enum
-    ElementNode = 1,
-    AttributeNode,
-    TextNode,
-    CDATANode,
-    EntityRefNode,
-    EntityNode,
-    ProcessingInstructionNode,
-    CommentNode,
-    DocumentNode,
-    DocumentTypeNode,
-    DocumentFragmentNode,
-    NotationNode
-  TNode* {.importc.} = object of RootObj
-    attributes*: seq[ref TNode]
-    childNodes*: seq[ref TNode]
-    children*: seq[ref TNode]
-    classList*: ref Classlist
-    data*: cstring
-    firstChild*: ref TNode
-    lastChild*: ref TNode
-    nextSibling*: ref TNode
-    nodeName*: cstring
-    nodeType*: TNodeType
-    nodeValue*: cstring
-    parentNode*: ref TNode
-    previousSibling*: ref TNode
-    appendChild*: proc (child: ref TNode) {.nimcall.}
-    appendData*: proc (data: cstring) {.nimcall.}
-    cloneNode*: proc (copyContent: bool): ref TNode {.nimcall.}
-    deleteData*: proc (start, len: int) {.nimcall.}
-    getAttribute*: proc (attr: cstring): cstring {.nimcall.}
-    getAttributeNode*: proc (attr: cstring): ref TNode {.nimcall.}
-    getElementsByTagName*: proc (name: cstring): seq[ref TNode] {.nimcall.}
-    getElementsByClassName*: proc (name: cstring): seq[ref TNode] {.nimcall.}
-    hasChildNodes*: proc (): bool {.nimcall.}
-    innerHTML*: cstring
-    insertBefore*: proc (newNode, before: ref TNode) {.nimcall.}
-    insertData*: proc (position: int, data: cstring) {.nimcall.}
-    addEventListener*: proc(ev: cstring, cb: proc(ev: ref TEvent)) {.nimcall.}
-    removeAttribute*: proc (attr: cstring) {.nimcall.}
-    removeAttributeNode*: proc (attr: ref TNode) {.nimcall.}
-    removeChild*: proc (child: ref TNode) {.nimcall.}
-    replaceChild*: proc (newNode, oldNode: ref TNode) {.nimcall.}
-    replaceData*: proc (start, len: int, text: cstring) {.nimcall.}
-    scrollIntoView*: proc () {.nimcall.}
-    setAttribute*: proc (name, value: cstring) {.nimcall.}
-    setAttributeNode*: proc (attr: ref TNode) {.nimcall.}
-    style*: ref TStyle
 
   TStyle* {.importc.} = object of RootObj
     background*: cstring
@@ -350,7 +353,7 @@ type
     setAttribute*: proc (attr, value: cstring, caseSensitive=false) {.nimcall.}
 
   TEvent* {.importc.} = object of RootObj
-    target*: ref TNode
+    target*: Node
     altKey*, ctrlKey*, shiftKey*: bool
     button*: int
     clientX*, clientY*: int
@@ -448,8 +451,8 @@ type
   TInterval* {.importc.} = object of RootObj
 
 var
-  window* {.importc, nodecl.}: ref TWindow
-  document* {.importc, nodecl.}: ref TDocument
+  window* {.importc, nodecl.}: Window
+  document* {.importc, nodecl.}: Document
   navigator* {.importc, nodecl.}: ref TNavigator
   screen* {.importc, nodecl.}: ref TScreen
 
@@ -466,3 +469,17 @@ proc isNaN*(x: BiggestFloat): bool {.importc, nodecl.}
 proc parseFloat*(s: cstring): BiggestFloat {.importc, nodecl.}
 proc parseInt*(s: cstring): int {.importc, nodecl.}
 proc parseInt*(s: cstring, radix: int):int {.importc, nodecl.}
+
+
+type
+  TWindow* {.deprecated.} = WindowObj
+  TFrame* {.deprecated.} = FrameObj
+  TNode* {.deprecated.} = NodeObj
+  TDocument* {.deprecated.} = DocumentObj
+  TElement* {.deprecated.} = ElementObj
+  TLink* {.deprecated.} = LinkObj
+  TEmbed* {.deprecated.} = EmbedObj
+  TAnchor* {.deprecated.} = AnchorObj
+  TOption* {.deprecated.} = OptionObj
+  TForm* {.deprecated.} = FormObj
+  TImage* {.deprecated.} = ImageObj
diff --git a/lib/packages/docutils/highlite.nim b/lib/packages/docutils/highlite.nim
index 7fc2e1aa3..9485f3912 100644
--- a/lib/packages/docutils/highlite.nim
+++ b/lib/packages/docutils/highlite.nim
@@ -14,14 +14,14 @@
 import
   strutils
 
-type 
-  TTokenClass* = enum 
-    gtEof, gtNone, gtWhitespace, gtDecNumber, gtBinNumber, gtHexNumber, 
-    gtOctNumber, gtFloatNumber, gtIdentifier, gtKeyword, gtStringLit, 
+type
+  TTokenClass* = enum
+    gtEof, gtNone, gtWhitespace, gtDecNumber, gtBinNumber, gtHexNumber,
+    gtOctNumber, gtFloatNumber, gtIdentifier, gtKeyword, gtStringLit,
     gtLongStringLit, gtCharLit, gtEscapeSequence, # escape sequence like \xff
-    gtOperator, gtPunctuation, gtComment, gtLongComment, gtRegularExpression, 
-    gtTagStart, gtTagEnd, gtKey, gtValue, gtRawData, gtAssembler, 
-    gtPreprocessor, gtDirective, gtCommand, gtRule, gtHyperlink, gtLabel, 
+    gtOperator, gtPunctuation, gtComment, gtLongComment, gtRegularExpression,
+    gtTagStart, gtTagEnd, gtKey, gtValue, gtRawData, gtAssembler,
+    gtPreprocessor, gtDirective, gtCommand, gtRule, gtHyperlink, gtLabel,
     gtReference, gtOther
   TGeneralTokenizer* = object of RootObj
     kind*: TTokenClass
@@ -30,27 +30,27 @@ type
     pos: int
     state: TTokenClass
 
-  TSourceLanguage* = enum 
+  TSourceLanguage* = enum
     langNone, langNim, langNimrod, langCpp, langCsharp, langC, langJava
 
-const 
+const
   sourceLanguageToStr*: array[TSourceLanguage, string] = ["none",
     "Nim", "Nimrod", "C++", "C#", "C", "Java"]
-  tokenClassToStr*: array[TTokenClass, string] = ["Eof", "None", "Whitespace", 
-    "DecNumber", "BinNumber", "HexNumber", "OctNumber", "FloatNumber", 
-    "Identifier", "Keyword", "StringLit", "LongStringLit", "CharLit", 
-    "EscapeSequence", "Operator", "Punctuation", "Comment", "LongComment", 
-    "RegularExpression", "TagStart", "TagEnd", "Key", "Value", "RawData", 
-    "Assembler", "Preprocessor", "Directive", "Command", "Rule", "Hyperlink", 
+  tokenClassToStr*: array[TTokenClass, string] = ["Eof", "None", "Whitespace",
+    "DecNumber", "BinNumber", "HexNumber", "OctNumber", "FloatNumber",
+    "Identifier", "Keyword", "StringLit", "LongStringLit", "CharLit",
+    "EscapeSequence", "Operator", "Punctuation", "Comment", "LongComment",
+    "RegularExpression", "TagStart", "TagEnd", "Key", "Value", "RawData",
+    "Assembler", "Preprocessor", "Directive", "Command", "Rule", "Hyperlink",
     "Label", "Reference", "Other"]
 
   # The following list comes from doc/keywords.txt, make sure it is
   # synchronized with this array by running the module itself as a test case.
   nimKeywords = ["addr", "and", "as", "asm", "atomic", "bind", "block",
-    "break", "case", "cast", "const", "continue", "converter",
+    "break", "case", "cast", "concept", "const", "continue", "converter",
     "defer", "discard", "distinct", "div", "do",
     "elif", "else", "end", "enum", "except", "export",
-    "finally", "for", "from", "func", 
+    "finally", "for", "from", "func",
     "generic", "if", "import", "in", "include",
     "interface", "is", "isnot", "iterator", "let", "macro", "method",
     "mixin", "mod", "nil", "not", "notin", "object", "of", "or", "out", "proc",
@@ -58,12 +58,12 @@ const
     "template", "try", "tuple", "type", "using", "var", "when", "while", "with",
     "without", "xor", "yield"]
 
-proc getSourceLanguage*(name: string): TSourceLanguage = 
-  for i in countup(succ(low(TSourceLanguage)), high(TSourceLanguage)): 
-    if cmpIgnoreStyle(name, sourceLanguageToStr[i]) == 0: 
+proc getSourceLanguage*(name: string): TSourceLanguage =
+  for i in countup(succ(low(TSourceLanguage)), high(TSourceLanguage)):
+    if cmpIgnoreStyle(name, sourceLanguageToStr[i]) == 0:
       return i
   result = langNone
-  
+
 proc initGeneralTokenizer*(g: var TGeneralTokenizer, buf: cstring) =
   g.buf = buf
   g.kind = low(TTokenClass)
@@ -74,52 +74,52 @@ proc initGeneralTokenizer*(g: var TGeneralTokenizer, buf: cstring) =
   while g.buf[pos] in {' ', '\x09'..'\x0D'}: inc(pos)
   g.pos = pos
 
-proc initGeneralTokenizer*(g: var TGeneralTokenizer, buf: string) = 
+proc initGeneralTokenizer*(g: var TGeneralTokenizer, buf: string) =
   initGeneralTokenizer(g, cstring(buf))
 
-proc deinitGeneralTokenizer*(g: var TGeneralTokenizer) = 
+proc deinitGeneralTokenizer*(g: var TGeneralTokenizer) =
   discard
 
-proc nimGetKeyword(id: string): TTokenClass = 
+proc nimGetKeyword(id: string): TTokenClass =
   for k in nimKeywords:
     if cmpIgnoreStyle(id, k) == 0: return gtKeyword
   result = gtIdentifier
   when false:
     var i = getIdent(id)
     if (i.id >= ord(tokKeywordLow) - ord(tkSymbol)) and
-        (i.id <= ord(tokKeywordHigh) - ord(tkSymbol)): 
+        (i.id <= ord(tokKeywordHigh) - ord(tkSymbol)):
       result = gtKeyword
-    else: 
+    else:
       result = gtIdentifier
-  
-proc nimNumberPostfix(g: var TGeneralTokenizer, position: int): int = 
+
+proc nimNumberPostfix(g: var TGeneralTokenizer, position: int): int =
   var pos = position
-  if g.buf[pos] == '\'': 
+  if g.buf[pos] == '\'':
     inc(pos)
     case g.buf[pos]
-    of 'f', 'F': 
+    of 'f', 'F':
       g.kind = gtFloatNumber
       inc(pos)
       if g.buf[pos] in {'0'..'9'}: inc(pos)
       if g.buf[pos] in {'0'..'9'}: inc(pos)
-    of 'i', 'I': 
+    of 'i', 'I':
       inc(pos)
       if g.buf[pos] in {'0'..'9'}: inc(pos)
       if g.buf[pos] in {'0'..'9'}: inc(pos)
-    else: 
+    else:
       discard
   result = pos
 
-proc nimNumber(g: var TGeneralTokenizer, position: int): int = 
+proc nimNumber(g: var TGeneralTokenizer, position: int): int =
   const decChars = {'0'..'9', '_'}
   var pos = position
   g.kind = gtDecNumber
   while g.buf[pos] in decChars: inc(pos)
-  if g.buf[pos] == '.': 
+  if g.buf[pos] == '.':
     g.kind = gtFloatNumber
     inc(pos)
     while g.buf[pos] in decChars: inc(pos)
-  if g.buf[pos] in {'e', 'E'}: 
+  if g.buf[pos] in {'e', 'E'}:
     g.kind = gtFloatNumber
     inc(pos)
     if g.buf[pos] in {'+', '-'}: inc(pos)
@@ -127,150 +127,150 @@ proc nimNumber(g: var TGeneralTokenizer, position: int): int =
   result = nimNumberPostfix(g, pos)
 
 const
-  OpChars  = {'+', '-', '*', '/', '\\', '<', '>', '!', '?', '^', '.', 
+  OpChars  = {'+', '-', '*', '/', '\\', '<', '>', '!', '?', '^', '.',
               '|', '=', '%', '&', '$', '@', '~', ':', '\x80'..'\xFF'}
 
-proc nimNextToken(g: var TGeneralTokenizer) = 
-  const 
+proc nimNextToken(g: var TGeneralTokenizer) =
+  const
     hexChars = {'0'..'9', 'A'..'F', 'a'..'f', '_'}
     octChars = {'0'..'7', '_'}
     binChars = {'0'..'1', '_'}
     SymChars = {'a'..'z', 'A'..'Z', '0'..'9', '\x80'..'\xFF'}
   var pos = g.pos
   g.start = g.pos
-  if g.state == gtStringLit: 
+  if g.state == gtStringLit:
     g.kind = gtStringLit
-    while true: 
+    while true:
       case g.buf[pos]
-      of '\\': 
+      of '\\':
         g.kind = gtEscapeSequence
         inc(pos)
         case g.buf[pos]
-        of 'x', 'X': 
+        of 'x', 'X':
           inc(pos)
           if g.buf[pos] in hexChars: inc(pos)
           if g.buf[pos] in hexChars: inc(pos)
-        of '0'..'9': 
+        of '0'..'9':
           while g.buf[pos] in {'0'..'9'}: inc(pos)
-        of '\0': 
+        of '\0':
           g.state = gtNone
         else: inc(pos)
-        break 
-      of '\0', '\x0D', '\x0A': 
+        break
+      of '\0', '\x0D', '\x0A':
         g.state = gtNone
-        break 
-      of '\"': 
+        break
+      of '\"':
         inc(pos)
         g.state = gtNone
-        break 
+        break
       else: inc(pos)
-  else: 
+  else:
     case g.buf[pos]
-    of ' ', '\x09'..'\x0D': 
+    of ' ', '\x09'..'\x0D':
       g.kind = gtWhitespace
       while g.buf[pos] in {' ', '\x09'..'\x0D'}: inc(pos)
-    of '#': 
+    of '#':
       g.kind = gtComment
       while not (g.buf[pos] in {'\0', '\x0A', '\x0D'}): inc(pos)
-    of 'a'..'z', 'A'..'Z', '_', '\x80'..'\xFF': 
+    of 'a'..'z', 'A'..'Z', '_', '\x80'..'\xFF':
       var id = ""
-      while g.buf[pos] in SymChars + {'_'}: 
+      while g.buf[pos] in SymChars + {'_'}:
         add(id, g.buf[pos])
         inc(pos)
-      if (g.buf[pos] == '\"'): 
-        if (g.buf[pos + 1] == '\"') and (g.buf[pos + 2] == '\"'): 
+      if (g.buf[pos] == '\"'):
+        if (g.buf[pos + 1] == '\"') and (g.buf[pos + 2] == '\"'):
           inc(pos, 3)
           g.kind = gtLongStringLit
-          while true: 
+          while true:
             case g.buf[pos]
-            of '\0': 
-              break 
-            of '\"': 
+            of '\0':
+              break
+            of '\"':
               inc(pos)
-              if g.buf[pos] == '\"' and g.buf[pos+1] == '\"' and 
-                  g.buf[pos+2] != '\"': 
+              if g.buf[pos] == '\"' and g.buf[pos+1] == '\"' and
+                  g.buf[pos+2] != '\"':
                 inc(pos, 2)
-                break 
+                break
             else: inc(pos)
-        else: 
+        else:
           g.kind = gtRawData
           inc(pos)
-          while not (g.buf[pos] in {'\0', '\x0A', '\x0D'}): 
+          while not (g.buf[pos] in {'\0', '\x0A', '\x0D'}):
             if g.buf[pos] == '"' and g.buf[pos+1] != '"': break
             inc(pos)
           if g.buf[pos] == '\"': inc(pos)
-      else: 
+      else:
         g.kind = nimGetKeyword(id)
-    of '0': 
+    of '0':
       inc(pos)
       case g.buf[pos]
-      of 'b', 'B': 
+      of 'b', 'B':
         inc(pos)
         while g.buf[pos] in binChars: inc(pos)
         pos = nimNumberPostfix(g, pos)
-      of 'x', 'X': 
+      of 'x', 'X':
         inc(pos)
         while g.buf[pos] in hexChars: inc(pos)
         pos = nimNumberPostfix(g, pos)
-      of 'o', 'O': 
+      of 'o', 'O':
         inc(pos)
         while g.buf[pos] in octChars: inc(pos)
         pos = nimNumberPostfix(g, pos)
       else: pos = nimNumber(g, pos)
-    of '1'..'9': 
+    of '1'..'9':
       pos = nimNumber(g, pos)
-    of '\'': 
+    of '\'':
       inc(pos)
       g.kind = gtCharLit
-      while true: 
+      while true:
         case g.buf[pos]
-        of '\0', '\x0D', '\x0A': 
-          break 
-        of '\'': 
+        of '\0', '\x0D', '\x0A':
+          break
+        of '\'':
           inc(pos)
-          break 
-        of '\\': 
+          break
+        of '\\':
           inc(pos, 2)
         else: inc(pos)
-    of '\"': 
+    of '\"':
       inc(pos)
-      if (g.buf[pos] == '\"') and (g.buf[pos + 1] == '\"'): 
+      if (g.buf[pos] == '\"') and (g.buf[pos + 1] == '\"'):
         inc(pos, 2)
         g.kind = gtLongStringLit
-        while true: 
+        while true:
           case g.buf[pos]
-          of '\0': 
-            break 
-          of '\"': 
+          of '\0':
+            break
+          of '\"':
             inc(pos)
-            if g.buf[pos] == '\"' and g.buf[pos+1] == '\"' and 
-                g.buf[pos+2] != '\"': 
+            if g.buf[pos] == '\"' and g.buf[pos+1] == '\"' and
+                g.buf[pos+2] != '\"':
               inc(pos, 2)
-              break 
+              break
           else: inc(pos)
-      else: 
+      else:
         g.kind = gtStringLit
-        while true: 
+        while true:
           case g.buf[pos]
-          of '\0', '\x0D', '\x0A': 
-            break 
-          of '\"': 
+          of '\0', '\x0D', '\x0A':
+            break
+          of '\"':
             inc(pos)
-            break 
-          of '\\': 
+            break
+          of '\\':
             g.state = g.kind
-            break 
+            break
           else: inc(pos)
-    of '(', ')', '[', ']', '{', '}', '`', ':', ',', ';': 
+    of '(', ')', '[', ']', '{', '}', '`', ':', ',', ';':
       inc(pos)
       g.kind = gtPunctuation
-    of '\0': 
+    of '\0':
       g.kind = gtEof
-    else: 
-      if g.buf[pos] in OpChars: 
+    else:
+      if g.buf[pos] in OpChars:
         g.kind = gtOperator
         while g.buf[pos] in OpChars: inc(pos)
-      else: 
+      else:
         inc(pos)
         g.kind = gtNone
   g.length = pos - g.pos
@@ -278,211 +278,211 @@ proc nimNextToken(g: var TGeneralTokenizer) =
     assert false, "nimNextToken: produced an empty token"
   g.pos = pos
 
-proc generalNumber(g: var TGeneralTokenizer, position: int): int = 
+proc generalNumber(g: var TGeneralTokenizer, position: int): int =
   const decChars = {'0'..'9'}
   var pos = position
   g.kind = gtDecNumber
   while g.buf[pos] in decChars: inc(pos)
-  if g.buf[pos] == '.': 
+  if g.buf[pos] == '.':
     g.kind = gtFloatNumber
     inc(pos)
     while g.buf[pos] in decChars: inc(pos)
-  if g.buf[pos] in {'e', 'E'}: 
+  if g.buf[pos] in {'e', 'E'}:
     g.kind = gtFloatNumber
     inc(pos)
     if g.buf[pos] in {'+', '-'}: inc(pos)
     while g.buf[pos] in decChars: inc(pos)
   result = pos
 
-proc generalStrLit(g: var TGeneralTokenizer, position: int): int = 
-  const 
+proc generalStrLit(g: var TGeneralTokenizer, position: int): int =
+  const
     decChars = {'0'..'9'}
     hexChars = {'0'..'9', 'A'..'F', 'a'..'f'}
   var pos = position
   g.kind = gtStringLit
   var c = g.buf[pos]
   inc(pos)                    # skip " or '
-  while true: 
+  while true:
     case g.buf[pos]
-    of '\0': 
-      break 
-    of '\\': 
+    of '\0':
+      break
+    of '\\':
       inc(pos)
       case g.buf[pos]
-      of '\0': 
-        break 
-      of '0'..'9': 
+      of '\0':
+        break
+      of '0'..'9':
         while g.buf[pos] in decChars: inc(pos)
-      of 'x', 'X': 
+      of 'x', 'X':
         inc(pos)
         if g.buf[pos] in hexChars: inc(pos)
         if g.buf[pos] in hexChars: inc(pos)
       else: inc(pos, 2)
-    else: 
-      if g.buf[pos] == c: 
+    else:
+      if g.buf[pos] == c:
         inc(pos)
-        break 
-      else: 
+        break
+      else:
         inc(pos)
   result = pos
 
-proc isKeyword(x: openArray[string], y: string): int = 
+proc isKeyword(x: openArray[string], y: string): int =
   var a = 0
   var b = len(x) - 1
-  while a <= b: 
+  while a <= b:
     var mid = (a + b) div 2
     var c = cmp(x[mid], y)
-    if c < 0: 
+    if c < 0:
       a = mid + 1
-    elif c > 0: 
+    elif c > 0:
       b = mid - 1
-    else: 
+    else:
       return mid
   result = - 1
 
-proc isKeywordIgnoreCase(x: openArray[string], y: string): int = 
+proc isKeywordIgnoreCase(x: openArray[string], y: string): int =
   var a = 0
   var b = len(x) - 1
-  while a <= b: 
+  while a <= b:
     var mid = (a + b) div 2
     var c = cmpIgnoreCase(x[mid], y)
-    if c < 0: 
+    if c < 0:
       a = mid + 1
-    elif c > 0: 
+    elif c > 0:
       b = mid - 1
-    else: 
+    else:
       return mid
   result = - 1
 
-type 
-  TTokenizerFlag = enum 
+type
+  TTokenizerFlag = enum
     hasPreprocessor, hasNestedComments
   TTokenizerFlags = set[TTokenizerFlag]
 
-proc clikeNextToken(g: var TGeneralTokenizer, keywords: openArray[string], 
-                    flags: TTokenizerFlags) = 
-  const 
+proc clikeNextToken(g: var TGeneralTokenizer, keywords: openArray[string],
+                    flags: TTokenizerFlags) =
+  const
     hexChars = {'0'..'9', 'A'..'F', 'a'..'f'}
     octChars = {'0'..'7'}
     binChars = {'0'..'1'}
     symChars = {'A'..'Z', 'a'..'z', '0'..'9', '_', '\x80'..'\xFF'}
   var pos = g.pos
   g.start = g.pos
-  if g.state == gtStringLit: 
+  if g.state == gtStringLit:
     g.kind = gtStringLit
-    while true: 
+    while true:
       case g.buf[pos]
-      of '\\': 
+      of '\\':
         g.kind = gtEscapeSequence
         inc(pos)
         case g.buf[pos]
-        of 'x', 'X': 
+        of 'x', 'X':
           inc(pos)
           if g.buf[pos] in hexChars: inc(pos)
           if g.buf[pos] in hexChars: inc(pos)
-        of '0'..'9': 
+        of '0'..'9':
           while g.buf[pos] in {'0'..'9'}: inc(pos)
-        of '\0': 
+        of '\0':
           g.state = gtNone
         else: inc(pos)
-        break 
-      of '\0', '\x0D', '\x0A': 
+        break
+      of '\0', '\x0D', '\x0A':
         g.state = gtNone
-        break 
-      of '\"': 
+        break
+      of '\"':
         inc(pos)
         g.state = gtNone
-        break 
+        break
       else: inc(pos)
-  else: 
+  else:
     case g.buf[pos]
-    of ' ', '\x09'..'\x0D': 
+    of ' ', '\x09'..'\x0D':
       g.kind = gtWhitespace
       while g.buf[pos] in {' ', '\x09'..'\x0D'}: inc(pos)
-    of '/': 
+    of '/':
       inc(pos)
-      if g.buf[pos] == '/': 
+      if g.buf[pos] == '/':
         g.kind = gtComment
         while not (g.buf[pos] in {'\0', '\x0A', '\x0D'}): inc(pos)
-      elif g.buf[pos] == '*': 
+      elif g.buf[pos] == '*':
         g.kind = gtLongComment
         var nested = 0
         inc(pos)
-        while true: 
+        while true:
           case g.buf[pos]
-          of '*': 
+          of '*':
             inc(pos)
-            if g.buf[pos] == '/': 
+            if g.buf[pos] == '/':
               inc(pos)
-              if nested == 0: break 
-          of '/': 
+              if nested == 0: break
+          of '/':
             inc(pos)
-            if g.buf[pos] == '*': 
+            if g.buf[pos] == '*':
               inc(pos)
               if hasNestedComments in flags: inc(nested)
-          of '\0': 
-            break 
+          of '\0':
+            break
           else: inc(pos)
-    of '#': 
+    of '#':
       inc(pos)
-      if hasPreprocessor in flags: 
+      if hasPreprocessor in flags:
         g.kind = gtPreprocessor
         while g.buf[pos] in {' ', '\t'}: inc(pos)
         while g.buf[pos] in symChars: inc(pos)
-      else: 
+      else:
         g.kind = gtOperator
-    of 'a'..'z', 'A'..'Z', '_', '\x80'..'\xFF': 
+    of 'a'..'z', 'A'..'Z', '_', '\x80'..'\xFF':
       var id = ""
-      while g.buf[pos] in symChars: 
+      while g.buf[pos] in symChars:
         add(id, g.buf[pos])
         inc(pos)
       if isKeyword(keywords, id) >= 0: g.kind = gtKeyword
       else: g.kind = gtIdentifier
-    of '0': 
+    of '0':
       inc(pos)
       case g.buf[pos]
-      of 'b', 'B': 
+      of 'b', 'B':
         inc(pos)
         while g.buf[pos] in binChars: inc(pos)
         if g.buf[pos] in {'A'..'Z', 'a'..'z'}: inc(pos)
-      of 'x', 'X': 
+      of 'x', 'X':
         inc(pos)
         while g.buf[pos] in hexChars: inc(pos)
         if g.buf[pos] in {'A'..'Z', 'a'..'z'}: inc(pos)
-      of '0'..'7': 
+      of '0'..'7':
         inc(pos)
         while g.buf[pos] in octChars: inc(pos)
         if g.buf[pos] in {'A'..'Z', 'a'..'z'}: inc(pos)
-      else: 
+      else:
         pos = generalNumber(g, pos)
         if g.buf[pos] in {'A'..'Z', 'a'..'z'}: inc(pos)
-    of '1'..'9': 
+    of '1'..'9':
       pos = generalNumber(g, pos)
       if g.buf[pos] in {'A'..'Z', 'a'..'z'}: inc(pos)
-    of '\'': 
+    of '\'':
       pos = generalStrLit(g, pos)
       g.kind = gtCharLit
-    of '\"': 
+    of '\"':
       inc(pos)
       g.kind = gtStringLit
-      while true: 
+      while true:
         case g.buf[pos]
-        of '\0': 
-          break 
-        of '\"': 
+        of '\0':
+          break
+        of '\"':
           inc(pos)
-          break 
-        of '\\': 
+          break
+        of '\\':
           g.state = g.kind
-          break 
+          break
         else: inc(pos)
-    of '(', ')', '[', ']', '{', '}', ':', ',', ';', '.': 
+    of '(', ')', '[', ']', '{', '}', ':', ',', ';', '.':
       inc(pos)
       g.kind = gtPunctuation
-    of '\0': 
+    of '\0':
       g.kind = gtEof
-    else: 
-      if g.buf[pos] in OpChars: 
+    else:
+      if g.buf[pos] in OpChars:
         g.kind = gtOperator
         while g.buf[pos] in OpChars: inc(pos)
       else:
@@ -493,55 +493,55 @@ proc clikeNextToken(g: var TGeneralTokenizer, keywords: openArray[string],
     assert false, "clikeNextToken: produced an empty token"
   g.pos = pos
 
-proc cNextToken(g: var TGeneralTokenizer) = 
-  const 
-    keywords: array[0..36, string] = ["_Bool", "_Complex", "_Imaginary", "auto", 
-      "break", "case", "char", "const", "continue", "default", "do", "double", 
-      "else", "enum", "extern", "float", "for", "goto", "if", "inline", "int", 
-      "long", "register", "restrict", "return", "short", "signed", "sizeof", 
-      "static", "struct", "switch", "typedef", "union", "unsigned", "void", 
+proc cNextToken(g: var TGeneralTokenizer) =
+  const
+    keywords: array[0..36, string] = ["_Bool", "_Complex", "_Imaginary", "auto",
+      "break", "case", "char", "const", "continue", "default", "do", "double",
+      "else", "enum", "extern", "float", "for", "goto", "if", "inline", "int",
+      "long", "register", "restrict", "return", "short", "signed", "sizeof",
+      "static", "struct", "switch", "typedef", "union", "unsigned", "void",
       "volatile", "while"]
   clikeNextToken(g, keywords, {hasPreprocessor})
 
-proc cppNextToken(g: var TGeneralTokenizer) = 
-  const 
-    keywords: array[0..47, string] = ["asm", "auto", "break", "case", "catch", 
-      "char", "class", "const", "continue", "default", "delete", "do", "double", 
-      "else", "enum", "extern", "float", "for", "friend", "goto", "if", 
-      "inline", "int", "long", "new", "operator", "private", "protected", 
-      "public", "register", "return", "short", "signed", "sizeof", "static", 
-      "struct", "switch", "template", "this", "throw", "try", "typedef", 
+proc cppNextToken(g: var TGeneralTokenizer) =
+  const
+    keywords: array[0..47, string] = ["asm", "auto", "break", "case", "catch",
+      "char", "class", "const", "continue", "default", "delete", "do", "double",
+      "else", "enum", "extern", "float", "for", "friend", "goto", "if",
+      "inline", "int", "long", "new", "operator", "private", "protected",
+      "public", "register", "return", "short", "signed", "sizeof", "static",
+      "struct", "switch", "template", "this", "throw", "try", "typedef",
       "union", "unsigned", "virtual", "void", "volatile", "while"]
   clikeNextToken(g, keywords, {hasPreprocessor})
 
-proc csharpNextToken(g: var TGeneralTokenizer) = 
-  const 
-    keywords: array[0..76, string] = ["abstract", "as", "base", "bool", "break", 
-      "byte", "case", "catch", "char", "checked", "class", "const", "continue", 
-      "decimal", "default", "delegate", "do", "double", "else", "enum", "event", 
-      "explicit", "extern", "false", "finally", "fixed", "float", "for", 
-      "foreach", "goto", "if", "implicit", "in", "int", "interface", "internal", 
-      "is", "lock", "long", "namespace", "new", "null", "object", "operator", 
-      "out", "override", "params", "private", "protected", "public", "readonly", 
-      "ref", "return", "sbyte", "sealed", "short", "sizeof", "stackalloc", 
-      "static", "string", "struct", "switch", "this", "throw", "true", "try", 
-      "typeof", "uint", "ulong", "unchecked", "unsafe", "ushort", "using", 
+proc csharpNextToken(g: var TGeneralTokenizer) =
+  const
+    keywords: array[0..76, string] = ["abstract", "as", "base", "bool", "break",
+      "byte", "case", "catch", "char", "checked", "class", "const", "continue",
+      "decimal", "default", "delegate", "do", "double", "else", "enum", "event",
+      "explicit", "extern", "false", "finally", "fixed", "float", "for",
+      "foreach", "goto", "if", "implicit", "in", "int", "interface", "internal",
+      "is", "lock", "long", "namespace", "new", "null", "object", "operator",
+      "out", "override", "params", "private", "protected", "public", "readonly",
+      "ref", "return", "sbyte", "sealed", "short", "sizeof", "stackalloc",
+      "static", "string", "struct", "switch", "this", "throw", "true", "try",
+      "typeof", "uint", "ulong", "unchecked", "unsafe", "ushort", "using",
       "virtual", "void", "volatile", "while"]
   clikeNextToken(g, keywords, {hasPreprocessor})
 
-proc javaNextToken(g: var TGeneralTokenizer) = 
-  const 
-    keywords: array[0..52, string] = ["abstract", "assert", "boolean", "break", 
-      "byte", "case", "catch", "char", "class", "const", "continue", "default", 
-      "do", "double", "else", "enum", "extends", "false", "final", "finally", 
-      "float", "for", "goto", "if", "implements", "import", "instanceof", "int", 
-      "interface", "long", "native", "new", "null", "package", "private", 
-      "protected", "public", "return", "short", "static", "strictfp", "super", 
-      "switch", "synchronized", "this", "throw", "throws", "transient", "true", 
+proc javaNextToken(g: var TGeneralTokenizer) =
+  const
+    keywords: array[0..52, string] = ["abstract", "assert", "boolean", "break",
+      "byte", "case", "catch", "char", "class", "const", "continue", "default",
+      "do", "double", "else", "enum", "extends", "false", "final", "finally",
+      "float", "for", "goto", "if", "implements", "import", "instanceof", "int",
+      "interface", "long", "native", "new", "null", "package", "private",
+      "protected", "public", "return", "short", "static", "strictfp", "super",
+      "switch", "synchronized", "this", "throw", "throws", "transient", "true",
       "try", "void", "volatile", "while"]
   clikeNextToken(g, keywords, {})
 
-proc getNextToken*(g: var TGeneralTokenizer, lang: TSourceLanguage) = 
+proc getNextToken*(g: var TGeneralTokenizer, lang: TSourceLanguage) =
   case lang
   of langNone: assert false
   of langNim, langNimrod: nimNextToken(g)
@@ -549,15 +549,17 @@ proc getNextToken*(g: var TGeneralTokenizer, lang: TSourceLanguage) =
   of langCsharp: csharpNextToken(g)
   of langC: cNextToken(g)
   of langJava: javaNextToken(g)
-  
+
 when isMainModule:
   var keywords: seq[string]
   # Try to work running in both the subdir or at the root.
   for filename in ["doc/keywords.txt", "../../../doc/keywords.txt"]:
-    except: echo filename, " not found"
-    let input = string(readFile(filename))
-    keywords = input.split()
-    break
+    try:
+      let input = string(readFile(filename))
+      keywords = input.split()
+      break
+    except:
+      echo filename, " not found"
   doAssert(not keywords.isNil, "Couldn't read any keywords.txt file!")
   doAssert keywords.len == nimKeywords.len, "No matching lengths"
   for i in 0..keywords.len-1:
diff --git a/lib/packages/docutils/rst.nim b/lib/packages/docutils/rst.nim
index 97784898e..a4d095e68 100644
--- a/lib/packages/docutils/rst.nim
+++ b/lib/packages/docutils/rst.nim
@@ -11,25 +11,25 @@
 ## subset is implemented. Some features of the `markdown`:idx: wiki syntax are
 ## also supported.
 
-import 
+import
   os, strutils, rstast
 
 type
-  TRstParseOption* = enum     ## options for the RST parser 
+  TRstParseOption* = enum     ## options for the RST parser
     roSkipPounds,             ## skip ``#`` at line beginning (documentation
                               ## embedded in Nim comments)
     roSupportSmilies,         ## make the RST parser support smilies like ``:)``
     roSupportRawDirective,    ## support the ``raw`` directive (don't support
                               ## it for sandboxing)
     roSupportMarkdown         ## support additional features of markdown
-  
+
   TRstParseOptions* = set[TRstParseOption]
-  
+
   TMsgClass* = enum
-    mcHint = "Hint", 
-    mcWarning = "Warning", 
+    mcHint = "Hint",
+    mcWarning = "Warning",
     mcError = "Error"
-  
+
   TMsgKind* = enum          ## the possible messages
     meCannotOpenFile,
     meExpected,
@@ -41,20 +41,20 @@ type
     mwUnknownSubstitution,
     mwUnsupportedLanguage,
     mwUnsupportedField
-  
+
   TMsgHandler* = proc (filename: string, line, col: int, msgKind: TMsgKind,
                        arg: string) {.nimcall.} ## what to do in case of an error
   TFindFileHandler* = proc (filename: string): string {.nimcall.}
 
 const
   messages: array [TMsgKind, string] = [
-    meCannotOpenFile: "cannot open '$1'", 
+    meCannotOpenFile: "cannot open '$1'",
     meExpected: "'$1' expected",
     meGridTableNotImplemented: "grid table is not implemented",
-    meNewSectionExpected: "new section expected", 
+    meNewSectionExpected: "new section expected",
     meGeneralParseError: "general parse error",
     meInvalidDirective: "invalid directive: '$1'",
-    mwRedefinitionOfLabel: "redefinition of label '$1'", 
+    mwRedefinitionOfLabel: "redefinition of label '$1'",
     mwUnknownSubstitution: "unknown substitution '$1'",
     mwUnsupportedLanguage: "language '$1' not supported",
     mwUnsupportedField: "field '$1' not supported"
@@ -67,7 +67,7 @@ proc getArgument*(n: PRstNode): string
 
 # ----------------------------- scanner part --------------------------------
 
-const 
+const
   SymChars: set[char] = {'a'..'z', 'A'..'Z', '0'..'9', '\x80'..'\xFF'}
   SmileyStartChars: set[char] = {':', ';', '8'}
   Smilies = {
@@ -111,14 +111,14 @@ const
   }
 
 type
-  TTokType = enum 
+  TTokType = enum
     tkEof, tkIndent, tkWhite, tkWord, tkAdornment, tkPunct, tkOther
   TToken = object             # a RST token
     kind*: TTokType           # the type of the token
     ival*: int                # the indentation or parsed integer value
     symbol*: string           # the parsed symbol as string
     line*, col*: int          # line and column of the token
-  
+
   TTokenSeq = seq[TToken]
   TLexer = object of RootObj
     buf*: cstring
@@ -127,61 +127,61 @@ type
     skipPounds*: bool
 
 
-proc getThing(L: var TLexer, tok: var TToken, s: set[char]) = 
+proc getThing(L: var TLexer, tok: var TToken, s: set[char]) =
   tok.kind = tkWord
   tok.line = L.line
   tok.col = L.col
   var pos = L.bufpos
-  while true: 
+  while true:
     add(tok.symbol, L.buf[pos])
     inc(pos)
-    if L.buf[pos] notin s: break 
+    if L.buf[pos] notin s: break
   inc(L.col, pos - L.bufpos)
   L.bufpos = pos
 
-proc getAdornment(L: var TLexer, tok: var TToken) = 
+proc getAdornment(L: var TLexer, tok: var TToken) =
   tok.kind = tkAdornment
   tok.line = L.line
   tok.col = L.col
   var pos = L.bufpos
   var c = L.buf[pos]
-  while true: 
+  while true:
     add(tok.symbol, L.buf[pos])
     inc(pos)
-    if L.buf[pos] != c: break 
+    if L.buf[pos] != c: break
   inc(L.col, pos - L.bufpos)
   L.bufpos = pos
 
-proc getIndentAux(L: var TLexer, start: int): int = 
+proc getIndentAux(L: var TLexer, start: int): int =
   var pos = start
-  var buf = L.buf                 
+  var buf = L.buf
   # skip the newline (but include it in the token!)
-  if buf[pos] == '\x0D': 
+  if buf[pos] == '\x0D':
     if buf[pos + 1] == '\x0A': inc(pos, 2)
     else: inc(pos)
-  elif buf[pos] == '\x0A': 
+  elif buf[pos] == '\x0A':
     inc(pos)
-  if L.skipPounds: 
+  if L.skipPounds:
     if buf[pos] == '#': inc(pos)
     if buf[pos] == '#': inc(pos)
-  while true: 
+  while true:
     case buf[pos]
-    of ' ', '\x0B', '\x0C': 
+    of ' ', '\x0B', '\x0C':
       inc(pos)
       inc(result)
-    of '\x09': 
+    of '\x09':
       inc(pos)
       result = result - (result mod 8) + 8
-    else: 
+    else:
       break                   # EndOfFile also leaves the loop
-  if buf[pos] == '\0': 
+  if buf[pos] == '\0':
     result = 0
-  elif (buf[pos] == '\x0A') or (buf[pos] == '\x0D'): 
+  elif (buf[pos] == '\x0A') or (buf[pos] == '\x0D'):
     # look at the next line for proper indentation:
     result = getIndentAux(L, pos)
   L.bufpos = pos              # no need to set back buf
-  
-proc getIndent(L: var TLexer, tok: var TToken) = 
+
+proc getIndent(L: var TLexer, tok: var TToken) =
   tok.col = 0
   tok.kind = tkIndent         # skip the newline (but include it in the token!)
   tok.ival = getIndentAux(L, L.bufpos)
@@ -191,85 +191,85 @@ proc getIndent(L: var TLexer, tok: var TToken) =
   tok.ival = max(tok.ival - L.baseIndent, 0)
   tok.symbol = "\n" & spaces(tok.ival)
 
-proc rawGetTok(L: var TLexer, tok: var TToken) = 
+proc rawGetTok(L: var TLexer, tok: var TToken) =
   tok.symbol = ""
   tok.ival = 0
   var c = L.buf[L.bufpos]
   case c
-  of 'a'..'z', 'A'..'Z', '\x80'..'\xFF', '0'..'9': 
+  of 'a'..'z', 'A'..'Z', '\x80'..'\xFF', '0'..'9':
     getThing(L, tok, SymChars)
-  of ' ', '\x09', '\x0B', '\x0C': 
+  of ' ', '\x09', '\x0B', '\x0C':
     getThing(L, tok, {' ', '\x09'})
     tok.kind = tkWhite
-    if L.buf[L.bufpos] in {'\x0D', '\x0A'}: 
+    if L.buf[L.bufpos] in {'\x0D', '\x0A'}:
       rawGetTok(L, tok)       # ignore spaces before \n
-  of '\x0D', '\x0A': 
+  of '\x0D', '\x0A':
     getIndent(L, tok)
-  of '!', '\"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', 
+  of '!', '\"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.',
      '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_', '`', '{',
-     '|', '}', '~': 
+     '|', '}', '~':
     getAdornment(L, tok)
     if len(tok.symbol) <= 3: tok.kind = tkPunct
-  else: 
+  else:
     tok.line = L.line
     tok.col = L.col
-    if c == '\0': 
+    if c == '\0':
       tok.kind = tkEof
-    else: 
+    else:
       tok.kind = tkOther
       add(tok.symbol, c)
       inc(L.bufpos)
       inc(L.col)
   tok.col = max(tok.col - L.baseIndent, 0)
 
-proc getTokens(buffer: string, skipPounds: bool, tokens: var TTokenSeq): int = 
+proc getTokens(buffer: string, skipPounds: bool, tokens: var TTokenSeq): int =
   var L: TLexer
   var length = len(tokens)
   L.buf = cstring(buffer)
   L.line = 0                  # skip UTF-8 BOM
-  if (L.buf[0] == '\xEF') and (L.buf[1] == '\xBB') and (L.buf[2] == '\xBF'): 
+  if (L.buf[0] == '\xEF') and (L.buf[1] == '\xBB') and (L.buf[2] == '\xBF'):
     inc(L.bufpos, 3)
   L.skipPounds = skipPounds
-  if skipPounds: 
-    if L.buf[L.bufpos] == '#': 
+  if skipPounds:
+    if L.buf[L.bufpos] == '#':
       inc(L.bufpos)
       inc(result)
-    if L.buf[L.bufpos] == '#': 
+    if L.buf[L.bufpos] == '#':
       inc(L.bufpos)
       inc(result)
     L.baseIndent = 0
-    while L.buf[L.bufpos] == ' ': 
+    while L.buf[L.bufpos] == ' ':
       inc(L.bufpos)
       inc(L.baseIndent)
       inc(result)
-  while true: 
+  while true:
     inc(length)
     setLen(tokens, length)
     rawGetTok(L, tokens[length - 1])
-    if tokens[length - 1].kind == tkEof: break 
-  if tokens[0].kind == tkWhite: 
+    if tokens[length - 1].kind == tkEof: break
+  if tokens[0].kind == tkWhite:
     # BUGFIX
     tokens[0].ival = len(tokens[0].symbol)
     tokens[0].kind = tkIndent
 
 type
   TLevelMap = array[char, int]
-  TSubstitution = object 
+  TSubstitution = object
     key*: string
     value*: PRstNode
 
-  TSharedState = object 
+  TSharedState = object
     options: TRstParseOptions   # parsing options
     uLevel, oLevel: int         # counters for the section levels
     subs: seq[TSubstitution]    # substitutions
     refs: seq[TSubstitution]    # references
     underlineToLevel: TLevelMap # Saves for each possible title adornment
                                 # character its level in the
-                                # current document. 
+                                # current document.
                                 # This is for single underline adornments.
-    overlineToLevel: TLevelMap  # Saves for each possible title adornment 
+    overlineToLevel: TLevelMap  # Saves for each possible title adornment
                                 # character its level in the current
-                                # document. 
+                                # document.
                                 # This is for over-underline adornments.
     msgHandler: TMsgHandler     # How to handle errors.
     findFile: TFindFileHandler  # How to find files.
@@ -293,7 +293,7 @@ proc whichMsgClass*(k: TMsgKind): TMsgClass =
   of 'w', 'W': result = mcWarning
   of 'h', 'H': result = mcHint
   else: assert false, "msgkind does not fit naming scheme"
-  
+
 proc defaultMsgHandler*(filename: string, line, col: int, msgkind: TMsgKind,
                         arg: string) {.procvar.} =
   let mc = msgkind.whichMsgClass
@@ -302,31 +302,31 @@ proc defaultMsgHandler*(filename: string, line, col: int, msgkind: TMsgKind,
   if mc == mcError: raise newException(EParseError, message)
   else: writeln(stdout, message)
 
-proc defaultFindFile*(filename: string): string {.procvar.} = 
+proc defaultFindFile*(filename: string): string {.procvar.} =
   if existsFile(filename): result = filename
   else: result = ""
 
 proc newSharedState(options: TRstParseOptions,
                     findFile: TFindFileHandler,
-                    msgHandler: TMsgHandler): PSharedState = 
+                    msgHandler: TMsgHandler): PSharedState =
   new(result)
   result.subs = @[]
   result.refs = @[]
   result.options = options
   result.msgHandler = if not isNil(msgHandler): msgHandler else: defaultMsgHandler
   result.findFile = if not isNil(findFile): findFile else: defaultFindFile
-  
-proc rstMessage(p: TRstParser, msgKind: TMsgKind, arg: string) = 
-  p.s.msgHandler(p.filename, p.line + p.tok[p.idx].line, 
+
+proc rstMessage(p: TRstParser, msgKind: TMsgKind, arg: string) =
+  p.s.msgHandler(p.filename, p.line + p.tok[p.idx].line,
                              p.col + p.tok[p.idx].col, msgKind, arg)
 
-proc rstMessage(p: TRstParser, msgKind: TMsgKind, arg: string, line, col: int) = 
+proc rstMessage(p: TRstParser, msgKind: TMsgKind, arg: string, line, col: int) =
   p.s.msgHandler(p.filename, p.line + line,
                              p.col + col, msgKind, arg)
 
-proc rstMessage(p: TRstParser, msgKind: TMsgKind) = 
-  p.s.msgHandler(p.filename, p.line + p.tok[p.idx].line, 
-                             p.col + p.tok[p.idx].col, msgKind, 
+proc rstMessage(p: TRstParser, msgKind: TMsgKind) =
+  p.s.msgHandler(p.filename, p.line + p.tok[p.idx].line,
+                             p.col + p.tok[p.idx].col, msgKind,
                              p.tok[p.idx].symbol)
 
 when false:
@@ -334,16 +334,16 @@ when false:
     assert p.indentStack[0] == 0
     for i in 1 .. high(p.indentStack): assert p.indentStack[i] < 1_000
 
-proc currInd(p: TRstParser): int = 
+proc currInd(p: TRstParser): int =
   result = p.indentStack[high(p.indentStack)]
 
-proc pushInd(p: var TRstParser, ind: int) = 
+proc pushInd(p: var TRstParser, ind: int) =
   add(p.indentStack, ind)
 
 proc popInd(p: var TRstParser) =
   if len(p.indentStack) > 1: setLen(p.indentStack, len(p.indentStack) - 1)
-  
-proc initParser(p: var TRstParser, sharedState: PSharedState) = 
+
+proc initParser(p: var TRstParser, sharedState: PSharedState) =
   p.indentStack = @[0]
   p.tok = @[]
   p.idx = 0
@@ -353,150 +353,150 @@ proc initParser(p: var TRstParser, sharedState: PSharedState) =
   p.line = 1
   p.s = sharedState
 
-proc addNodesAux(n: PRstNode, result: var string) = 
-  if n.kind == rnLeaf: 
+proc addNodesAux(n: PRstNode, result: var string) =
+  if n.kind == rnLeaf:
     add(result, n.text)
-  else: 
+  else:
     for i in countup(0, len(n) - 1): addNodesAux(n.sons[i], result)
-  
-proc addNodes(n: PRstNode): string = 
+
+proc addNodes(n: PRstNode): string =
   result = ""
   addNodesAux(n, result)
 
-proc rstnodeToRefnameAux(n: PRstNode, r: var string, b: var bool) = 
-  if n.kind == rnLeaf: 
-    for i in countup(0, len(n.text) - 1): 
+proc rstnodeToRefnameAux(n: PRstNode, r: var string, b: var bool) =
+  if n.kind == rnLeaf:
+    for i in countup(0, len(n.text) - 1):
       case n.text[i]
-      of '0'..'9': 
-        if b: 
+      of '0'..'9':
+        if b:
           add(r, '-')
           b = false
         if len(r) == 0: add(r, 'Z')
         add(r, n.text[i])
-      of 'a'..'z': 
-        if b: 
+      of 'a'..'z':
+        if b:
           add(r, '-')
           b = false
         add(r, n.text[i])
-      of 'A'..'Z': 
-        if b: 
+      of 'A'..'Z':
+        if b:
           add(r, '-')
           b = false
         add(r, chr(ord(n.text[i]) - ord('A') + ord('a')))
-      else: 
+      else:
         if (len(r) > 0): b = true
-  else: 
+  else:
     for i in countup(0, len(n) - 1): rstnodeToRefnameAux(n.sons[i], r, b)
-  
-proc rstnodeToRefname(n: PRstNode): string = 
+
+proc rstnodeToRefname(n: PRstNode): string =
   result = ""
   var b = false
   rstnodeToRefnameAux(n, result, b)
 
-proc findSub(p: var TRstParser, n: PRstNode): int = 
-  var key = addNodes(n)           
+proc findSub(p: var TRstParser, n: PRstNode): int =
+  var key = addNodes(n)
   # the spec says: if no exact match, try one without case distinction:
-  for i in countup(0, high(p.s.subs)): 
-    if key == p.s.subs[i].key: 
+  for i in countup(0, high(p.s.subs)):
+    if key == p.s.subs[i].key:
       return i
-  for i in countup(0, high(p.s.subs)): 
-    if cmpIgnoreStyle(key, p.s.subs[i].key) == 0: 
+  for i in countup(0, high(p.s.subs)):
+    if cmpIgnoreStyle(key, p.s.subs[i].key) == 0:
       return i
   result = -1
 
-proc setSub(p: var TRstParser, key: string, value: PRstNode) = 
+proc setSub(p: var TRstParser, key: string, value: PRstNode) =
   var length = len(p.s.subs)
-  for i in countup(0, length - 1): 
-    if key == p.s.subs[i].key: 
+  for i in countup(0, length - 1):
+    if key == p.s.subs[i].key:
       p.s.subs[i].value = value
-      return 
+      return
   setLen(p.s.subs, length + 1)
   p.s.subs[length].key = key
   p.s.subs[length].value = value
 
-proc setRef(p: var TRstParser, key: string, value: PRstNode) = 
+proc setRef(p: var TRstParser, key: string, value: PRstNode) =
   var length = len(p.s.refs)
-  for i in countup(0, length - 1): 
+  for i in countup(0, length - 1):
     if key == p.s.refs[i].key:
       if p.s.refs[i].value.addNodes != value.addNodes:
         rstMessage(p, mwRedefinitionOfLabel, key)
 
       p.s.refs[i].value = value
-      return 
+      return
   setLen(p.s.refs, length + 1)
   p.s.refs[length].key = key
   p.s.refs[length].value = value
 
-proc findRef(p: var TRstParser, key: string): PRstNode = 
-  for i in countup(0, high(p.s.refs)): 
-    if key == p.s.refs[i].key: 
+proc findRef(p: var TRstParser, key: string): PRstNode =
+  for i in countup(0, high(p.s.refs)):
+    if key == p.s.refs[i].key:
       return p.s.refs[i].value
 
-proc newLeaf(p: var TRstParser): PRstNode = 
+proc newLeaf(p: var TRstParser): PRstNode =
   result = newRstNode(rnLeaf, p.tok[p.idx].symbol)
 
-proc getReferenceName(p: var TRstParser, endStr: string): PRstNode = 
+proc getReferenceName(p: var TRstParser, endStr: string): PRstNode =
   var res = newRstNode(rnInner)
-  while true: 
+  while true:
     case p.tok[p.idx].kind
-    of tkWord, tkOther, tkWhite: 
+    of tkWord, tkOther, tkWhite:
       add(res, newLeaf(p))
-    of tkPunct: 
-      if p.tok[p.idx].symbol == endStr: 
+    of tkPunct:
+      if p.tok[p.idx].symbol == endStr:
         inc(p.idx)
-        break 
-      else: 
+        break
+      else:
         add(res, newLeaf(p))
-    else: 
+    else:
       rstMessage(p, meExpected, endStr)
-      break 
+      break
     inc(p.idx)
   result = res
 
-proc untilEol(p: var TRstParser): PRstNode = 
+proc untilEol(p: var TRstParser): PRstNode =
   result = newRstNode(rnInner)
-  while not (p.tok[p.idx].kind in {tkIndent, tkEof}): 
+  while not (p.tok[p.idx].kind in {tkIndent, tkEof}):
     add(result, newLeaf(p))
     inc(p.idx)
 
-proc expect(p: var TRstParser, tok: string) = 
+proc expect(p: var TRstParser, tok: string) =
   if p.tok[p.idx].symbol == tok: inc(p.idx)
   else: rstMessage(p, meExpected, tok)
-  
-proc isInlineMarkupEnd(p: TRstParser, markup: string): bool = 
+
+proc isInlineMarkupEnd(p: TRstParser, markup: string): bool =
   result = p.tok[p.idx].symbol == markup
-  if not result: 
+  if not result:
     return                    # Rule 3:
   result = not (p.tok[p.idx - 1].kind in {tkIndent, tkWhite})
-  if not result: 
+  if not result:
     return                    # Rule 4:
   result = (p.tok[p.idx + 1].kind in {tkIndent, tkWhite, tkEof}) or
       (p.tok[p.idx + 1].symbol[0] in
-      {'\'', '\"', ')', ']', '}', '>', '-', '/', '\\', ':', '.', ',', ';', '!', 
+      {'\'', '\"', ')', ']', '}', '>', '-', '/', '\\', ':', '.', ',', ';', '!',
        '?', '_'})
-  if not result: 
+  if not result:
     return                    # Rule 7:
-  if p.idx > 0: 
-    if (markup != "``") and (p.tok[p.idx - 1].symbol == "\\"): 
+  if p.idx > 0:
+    if (markup != "``") and (p.tok[p.idx - 1].symbol == "\\"):
       result = false
 
-proc isInlineMarkupStart(p: TRstParser, markup: string): bool = 
+proc isInlineMarkupStart(p: TRstParser, markup: string): bool =
   var d: char
   result = p.tok[p.idx].symbol == markup
-  if not result: 
+  if not result:
     return                    # Rule 1:
   result = (p.idx == 0) or (p.tok[p.idx - 1].kind in {tkIndent, tkWhite}) or
       (p.tok[p.idx - 1].symbol[0] in
       {'\'', '\"', '(', '[', '{', '<', '-', '/', ':', '_'})
-  if not result: 
+  if not result:
     return                    # Rule 2:
   result = not (p.tok[p.idx + 1].kind in {tkIndent, tkWhite, tkEof})
-  if not result: 
+  if not result:
     return                    # Rule 5 & 7:
-  if p.idx > 0: 
-    if p.tok[p.idx - 1].symbol == "\\": 
+  if p.idx > 0:
+    if p.tok[p.idx - 1].symbol == "\\":
       result = false
-    else: 
+    else:
       var c = p.tok[p.idx - 1].symbol[0]
       case c
       of '\'', '\"': d = c
@@ -507,7 +507,7 @@ proc isInlineMarkupStart(p: TRstParser, markup: string): bool =
       else: d = '\0'
       if d != '\0': result = p.tok[p.idx + 1].symbol[0] != d
 
-proc match(p: TRstParser, start: int, expr: string): bool = 
+proc match(p: TRstParser, start: int, expr: string): bool =
   # regular expressions are:
   # special char     exact match
   # 'w'              tkWord
@@ -521,7 +521,7 @@ proc match(p: TRstParser, start: int, expr: string): bool =
   var i = 0
   var j = start
   var last = len(expr) - 1
-  while i <= last: 
+  while i <= last:
     case expr[i]
     of 'w': result = p.tok[j].kind == tkWord
     of ' ': result = p.tok[j].kind == tkWhite
@@ -531,75 +531,75 @@ proc match(p: TRstParser, start: int, expr: string): bool =
     of 'o': result = p.tok[j].kind == tkOther
     of 'T': result = true
     of 'E': result = p.tok[j].kind in {tkEof, tkWhite, tkIndent}
-    of 'e': 
+    of 'e':
       result = (p.tok[j].kind == tkWord) or (p.tok[j].symbol == "#")
-      if result: 
+      if result:
         case p.tok[j].symbol[0]
         of 'a'..'z', 'A'..'Z': result = len(p.tok[j].symbol) == 1
         of '0'..'9': result = allCharsInSet(p.tok[j].symbol, {'0'..'9'})
         else: discard
-    else: 
+    else:
       var c = expr[i]
       var length = 0
-      while (i <= last) and (expr[i] == c): 
+      while (i <= last) and (expr[i] == c):
         inc(i)
         inc(length)
       dec(i)
       result = (p.tok[j].kind in {tkPunct, tkAdornment}) and
           (len(p.tok[j].symbol) == length) and (p.tok[j].symbol[0] == c)
-    if not result: return 
+    if not result: return
     inc(j)
     inc(i)
   result = true
-  
-proc fixupEmbeddedRef(n, a, b: PRstNode) = 
+
+proc fixupEmbeddedRef(n, a, b: PRstNode) =
   var sep = - 1
-  for i in countdown(len(n) - 2, 0): 
-    if n.sons[i].text == "<": 
+  for i in countdown(len(n) - 2, 0):
+    if n.sons[i].text == "<":
       sep = i
-      break 
+      break
   var incr = if (sep > 0) and (n.sons[sep - 1].text[0] == ' '): 2 else: 1
   for i in countup(0, sep - incr): add(a, n.sons[i])
   for i in countup(sep + 1, len(n) - 2): add(b, n.sons[i])
-  
-proc parsePostfix(p: var TRstParser, n: PRstNode): PRstNode = 
+
+proc parsePostfix(p: var TRstParser, n: PRstNode): PRstNode =
   result = n
-  if isInlineMarkupEnd(p, "_"): 
+  if isInlineMarkupEnd(p, "_"):
     inc(p.idx)
     if p.tok[p.idx-2].symbol == "`" and p.tok[p.idx-3].symbol == ">":
       var a = newRstNode(rnInner)
       var b = newRstNode(rnInner)
       fixupEmbeddedRef(n, a, b)
-      if len(a) == 0: 
+      if len(a) == 0:
         result = newRstNode(rnStandaloneHyperlink)
         add(result, b)
-      else: 
+      else:
         result = newRstNode(rnHyperlink)
         add(result, a)
         add(result, b)
         setRef(p, rstnodeToRefname(a), b)
-    elif n.kind == rnInterpretedText: 
+    elif n.kind == rnInterpretedText:
       n.kind = rnRef
-    else: 
+    else:
       result = newRstNode(rnRef)
       add(result, n)
-  elif match(p, p.idx, ":w:"): 
+  elif match(p, p.idx, ":w:"):
     # a role:
-    if p.tok[p.idx + 1].symbol == "idx": 
+    if p.tok[p.idx + 1].symbol == "idx":
       n.kind = rnIdx
-    elif p.tok[p.idx + 1].symbol == "literal": 
+    elif p.tok[p.idx + 1].symbol == "literal":
       n.kind = rnInlineLiteral
-    elif p.tok[p.idx + 1].symbol == "strong": 
+    elif p.tok[p.idx + 1].symbol == "strong":
       n.kind = rnStrongEmphasis
-    elif p.tok[p.idx + 1].symbol == "emphasis": 
+    elif p.tok[p.idx + 1].symbol == "emphasis":
       n.kind = rnEmphasis
     elif (p.tok[p.idx + 1].symbol == "sub") or
-        (p.tok[p.idx + 1].symbol == "subscript"): 
+        (p.tok[p.idx + 1].symbol == "subscript"):
       n.kind = rnSub
     elif (p.tok[p.idx + 1].symbol == "sup") or
-        (p.tok[p.idx + 1].symbol == "supscript"): 
+        (p.tok[p.idx + 1].symbol == "supscript"):
       n.kind = rnSup
-    else: 
+    else:
       result = newRstNode(rnGeneralRole)
       n.kind = rnInner
       add(result, n)
@@ -614,7 +614,7 @@ proc matchVerbatim(p: TRstParser, start: int, expr: string): int =
     inc j, p.tok[result].symbol.len
     inc result
   if j < expr.len: result = 0
-  
+
 proc parseSmiley(p: var TRstParser): PRstNode =
   if p.tok[p.idx].symbol[0] notin SmileyStartChars: return
   for key, val in items(Smilies):
@@ -636,17 +636,17 @@ proc isUrl(p: TRstParser, i: int): bool =
     (p.tok[i+3].kind == tkWord) and
     (p.tok[i].symbol in ["http", "https", "ftp", "telnet", "file"])
 
-proc parseUrl(p: var TRstParser, father: PRstNode) = 
+proc parseUrl(p: var TRstParser, father: PRstNode) =
   #if p.tok[p.idx].symbol[strStart] == '<':
   if isUrl(p, p.idx):
     var n = newRstNode(rnStandaloneHyperlink)
-    while true: 
+    while true:
       case p.tok[p.idx].kind
       of tkWord, tkAdornment, tkOther: discard
-      of tkPunct: 
+      of tkPunct:
         if p.tok[p.idx+1].kind notin {tkWord, tkAdornment, tkOther, tkPunct}:
           break
-      else: break 
+      else: break
       add(n, newLeaf(p))
       inc(p.idx)
     add(father, n)
@@ -655,13 +655,13 @@ proc parseUrl(p: var TRstParser, father: PRstNode) =
     inc(p.idx)
     if p.tok[p.idx].symbol == "_": n = parsePostfix(p, n)
     add(father, n)
-  
-proc parseBackslash(p: var TRstParser, father: PRstNode) = 
+
+proc parseBackslash(p: var TRstParser, father: PRstNode) =
   assert(p.tok[p.idx].kind == tkPunct)
-  if p.tok[p.idx].symbol == "\\\\": 
+  if p.tok[p.idx].symbol == "\\\\":
     add(father, newRstNode(rnLeaf, "\\"))
     inc(p.idx)
-  elif p.tok[p.idx].symbol == "\\": 
+  elif p.tok[p.idx].symbol == "\\":
     # XXX: Unicode?
     inc(p.idx)
     if p.tok[p.idx].kind != tkWhite: add(father, newLeaf(p))
@@ -674,13 +674,13 @@ when false:
   proc parseAdhoc(p: var TRstParser, father: PRstNode, verbatim: bool) =
     if not verbatim and isURL(p, p.idx):
       var n = newRstNode(rnStandaloneHyperlink)
-      while true: 
+      while true:
         case p.tok[p.idx].kind
         of tkWord, tkAdornment, tkOther: nil
-        of tkPunct: 
+        of tkPunct:
           if p.tok[p.idx+1].kind notin {tkWord, tkAdornment, tkOther, tkPunct}:
             break
-        else: break 
+        else: break
         add(n, newLeaf(p))
         inc(p.idx)
       add(father, n)
@@ -694,33 +694,33 @@ when false:
       if p.tok[p.idx].symbol == "_": n = parsePostfix(p, n)
       add(father, n)
 
-proc parseUntil(p: var TRstParser, father: PRstNode, postfix: string, 
-                interpretBackslash: bool) = 
+proc parseUntil(p: var TRstParser, father: PRstNode, postfix: string,
+                interpretBackslash: bool) =
   let
     line = p.tok[p.idx].line
     col = p.tok[p.idx].col
   inc p.idx
-  while true: 
+  while true:
     case p.tok[p.idx].kind
-    of tkPunct: 
-      if isInlineMarkupEnd(p, postfix): 
+    of tkPunct:
+      if isInlineMarkupEnd(p, postfix):
         inc(p.idx)
-        break 
-      elif interpretBackslash: 
+        break
+      elif interpretBackslash:
         parseBackslash(p, father)
-      else: 
+      else:
         add(father, newLeaf(p))
         inc(p.idx)
-    of tkAdornment, tkWord, tkOther: 
+    of tkAdornment, tkWord, tkOther:
       add(father, newLeaf(p))
       inc(p.idx)
-    of tkIndent: 
+    of tkIndent:
       add(father, newRstNode(rnLeaf, " "))
       inc(p.idx)
-      if p.tok[p.idx].kind == tkIndent: 
+      if p.tok[p.idx].kind == tkIndent:
         rstMessage(p, meExpected, postfix, line, col)
-        break 
-    of tkWhite: 
+        break
+    of tkWhite:
       add(father, newRstNode(rnLeaf, " "))
       inc(p.idx)
     else: rstMessage(p, meExpected, postfix, line, col)
@@ -753,20 +753,20 @@ proc parseMarkdownCodeblock(p: var TRstParser): PRstNode =
   result = newRstNode(rnCodeBlock)
   add(result, args)
   add(result, nil)
-  add(result, lb)  
-  
-proc parseInline(p: var TRstParser, father: PRstNode) = 
+  add(result, lb)
+
+proc parseInline(p: var TRstParser, father: PRstNode) =
   case p.tok[p.idx].kind
-  of tkPunct: 
+  of tkPunct:
     if isInlineMarkupStart(p, "***"):
       var n = newRstNode(rnTripleEmphasis)
       parseUntil(p, n, "***", true)
       add(father, n)
-    elif isInlineMarkupStart(p, "**"): 
+    elif isInlineMarkupStart(p, "**"):
       var n = newRstNode(rnStrongEmphasis)
       parseUntil(p, n, "**", true)
       add(father, n)
-    elif isInlineMarkupStart(p, "*"): 
+    elif isInlineMarkupStart(p, "*"):
       var n = newRstNode(rnEmphasis)
       parseUntil(p, n, "*", true)
       add(father, n)
@@ -777,12 +777,12 @@ proc parseInline(p: var TRstParser, father: PRstNode) =
       var n = newRstNode(rnInlineLiteral)
       parseUntil(p, n, "``", false)
       add(father, n)
-    elif isInlineMarkupStart(p, "`"): 
+    elif isInlineMarkupStart(p, "`"):
       var n = newRstNode(rnInterpretedText)
       parseUntil(p, n, "`", true)
       n = parsePostfix(p, n)
       add(father, n)
-    elif isInlineMarkupStart(p, "|"): 
+    elif isInlineMarkupStart(p, "|"):
       var n = newRstNode(rnSubstitutionReferences)
       parseUntil(p, n, "|", false)
       add(father, n)
@@ -800,7 +800,7 @@ proc parseInline(p: var TRstParser, father: PRstNode) =
         add(father, n)
         return
     parseUrl(p, father)
-  of tkAdornment, tkOther, tkWhite: 
+  of tkAdornment, tkOther, tkWhite:
     if roSupportSmilies in p.s.options:
       let n = parseSmiley(p)
       if n != nil:
@@ -809,75 +809,75 @@ proc parseInline(p: var TRstParser, father: PRstNode) =
     add(father, newLeaf(p))
     inc(p.idx)
   else: discard
-  
-proc getDirective(p: var TRstParser): string = 
-  if p.tok[p.idx].kind == tkWhite and p.tok[p.idx+1].kind == tkWord: 
+
+proc getDirective(p: var TRstParser): string =
+  if p.tok[p.idx].kind == tkWhite and p.tok[p.idx+1].kind == tkWord:
     var j = p.idx
     inc(p.idx)
     result = p.tok[p.idx].symbol
     inc(p.idx)
-    while p.tok[p.idx].kind in {tkWord, tkPunct, tkAdornment, tkOther}: 
-      if p.tok[p.idx].symbol == "::": break 
+    while p.tok[p.idx].kind in {tkWord, tkPunct, tkAdornment, tkOther}:
+      if p.tok[p.idx].symbol == "::": break
       add(result, p.tok[p.idx].symbol)
       inc(p.idx)
     if p.tok[p.idx].kind == tkWhite: inc(p.idx)
-    if p.tok[p.idx].symbol == "::": 
+    if p.tok[p.idx].symbol == "::":
       inc(p.idx)
       if (p.tok[p.idx].kind == tkWhite): inc(p.idx)
-    else: 
+    else:
       p.idx = j               # set back
       result = ""             # error
-  else: 
+  else:
     result = ""
-  
-proc parseComment(p: var TRstParser): PRstNode = 
+
+proc parseComment(p: var TRstParser): PRstNode =
   case p.tok[p.idx].kind
-  of tkIndent, tkEof: 
-    if p.tok[p.idx].kind != tkEof and p.tok[p.idx + 1].kind == tkIndent: 
+  of tkIndent, tkEof:
+    if p.tok[p.idx].kind != tkEof and p.tok[p.idx + 1].kind == tkIndent:
       inc(p.idx)              # empty comment
-    else: 
+    else:
       var indent = p.tok[p.idx].ival
-      while true: 
+      while true:
         case p.tok[p.idx].kind
-        of tkEof: 
-          break 
-        of tkIndent: 
-          if (p.tok[p.idx].ival < indent): break 
-        else: 
+        of tkEof:
+          break
+        of tkIndent:
+          if (p.tok[p.idx].ival < indent): break
+        else:
           discard
         inc(p.idx)
   else:
     while p.tok[p.idx].kind notin {tkIndent, tkEof}: inc(p.idx)
   result = nil
 
-type 
+type
   TDirKind = enum             # must be ordered alphabetically!
     dkNone, dkAuthor, dkAuthors, dkCode, dkCodeBlock, dkContainer, dkContents,
     dkFigure, dkImage, dkInclude, dkIndex, dkRaw, dkTitle
 
-const 
+const
   DirIds: array[0..12, string] = ["", "author", "authors", "code",
     "code-block", "container", "contents", "figure", "image", "include",
     "index", "raw", "title"]
 
-proc getDirKind(s: string): TDirKind = 
+proc getDirKind(s: string): TDirKind =
   let i = find(DirIds, s)
   if i >= 0: result = TDirKind(i)
   else: result = dkNone
-  
-proc parseLine(p: var TRstParser, father: PRstNode) = 
-  while true: 
+
+proc parseLine(p: var TRstParser, father: PRstNode) =
+  while true:
     case p.tok[p.idx].kind
     of tkWhite, tkWord, tkOther, tkPunct: parseInline(p, father)
-    else: break 
+    else: break
 
-proc parseUntilNewline(p: var TRstParser, father: PRstNode) = 
-  while true: 
+proc parseUntilNewline(p: var TRstParser, father: PRstNode) =
+  while true:
     case p.tok[p.idx].kind
     of tkWhite, tkWord, tkAdornment, tkOther, tkPunct: parseInline(p, father)
     of tkEof, tkIndent: break
-  
-proc parseSection(p: var TRstParser, result: PRstNode)
+
+proc parseSection(p: var TRstParser, result: PRstNode) {.gcsafe.}
 proc parseField(p: var TRstParser): PRstNode =
   ## Returns a parsed rnField node.
   ##
@@ -888,9 +888,9 @@ proc parseField(p: var TRstParser): PRstNode =
   parseUntil(p, fieldname, ":", false)
   var fieldbody = newRstNode(rnFieldBody)
   if p.tok[p.idx].kind != tkIndent: parseLine(p, fieldbody)
-  if p.tok[p.idx].kind == tkIndent: 
+  if p.tok[p.idx].kind == tkIndent:
     var indent = p.tok[p.idx].ival
-    if indent > col: 
+    if indent > col:
       pushInd(p, indent)
       parseSection(p, fieldbody)
       popInd(p)
@@ -909,14 +909,14 @@ proc parseFields(p: var TRstParser): PRstNode =
     var col = if atStart: p.tok[p.idx].col else: p.tok[p.idx].ival
     result = newRstNode(rnFieldList)
     if not atStart: inc(p.idx)
-    while true: 
+    while true:
       add(result, parseField(p))
       if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival == col) and
-          (p.tok[p.idx + 1].symbol == ":"): 
+          (p.tok[p.idx + 1].symbol == ":"):
         inc(p.idx)
-      else: 
-        break 
-  
+      else:
+        break
+
 proc getFieldValue*(n: PRstNode): string =
   ## Returns the value of a specific ``rnField`` node.
   ##
@@ -929,122 +929,122 @@ proc getFieldValue*(n: PRstNode): string =
   assert n.sons[1].kind == rnFieldBody
   result = addNodes(n.sons[1]).strip
 
-proc getFieldValue(n: PRstNode, fieldname: string): string = 
+proc getFieldValue(n: PRstNode, fieldname: string): string =
   result = ""
-  if n.sons[1] == nil: return 
-  if (n.sons[1].kind != rnFieldList): 
+  if n.sons[1] == nil: return
+  if (n.sons[1].kind != rnFieldList):
     #InternalError("getFieldValue (2): " & $n.sons[1].kind)
     # We don't like internal errors here anymore as that would break the forum!
     return
-  for i in countup(0, len(n.sons[1]) - 1): 
+  for i in countup(0, len(n.sons[1]) - 1):
     var f = n.sons[1].sons[i]
-    if cmpIgnoreStyle(addNodes(f.sons[0]), fieldname) == 0: 
+    if cmpIgnoreStyle(addNodes(f.sons[0]), fieldname) == 0:
       result = addNodes(f.sons[1])
       if result == "": result = "\x01\x01" # indicates that the field exists
-      return 
+      return
 
-proc getArgument(n: PRstNode): string = 
+proc getArgument(n: PRstNode): string =
   if n.sons[0] == nil: result = ""
   else: result = addNodes(n.sons[0])
-  
-proc parseDotDot(p: var TRstParser): PRstNode
-proc parseLiteralBlock(p: var TRstParser): PRstNode = 
+
+proc parseDotDot(p: var TRstParser): PRstNode {.gcsafe.}
+proc parseLiteralBlock(p: var TRstParser): PRstNode =
   result = newRstNode(rnLiteralBlock)
   var n = newRstNode(rnLeaf, "")
-  if p.tok[p.idx].kind == tkIndent: 
+  if p.tok[p.idx].kind == tkIndent:
     var indent = p.tok[p.idx].ival
     inc(p.idx)
-    while true: 
+    while true:
       case p.tok[p.idx].kind
-      of tkEof: 
-        break 
-      of tkIndent: 
-        if (p.tok[p.idx].ival < indent): 
-          break 
-        else: 
+      of tkEof:
+        break
+      of tkIndent:
+        if (p.tok[p.idx].ival < indent):
+          break
+        else:
           add(n.text, "\n")
           add(n.text, spaces(p.tok[p.idx].ival - indent))
           inc(p.idx)
-      else: 
+      else:
         add(n.text, p.tok[p.idx].symbol)
         inc(p.idx)
-  else: 
-    while not (p.tok[p.idx].kind in {tkIndent, tkEof}): 
+  else:
+    while not (p.tok[p.idx].kind in {tkIndent, tkEof}):
       add(n.text, p.tok[p.idx].symbol)
       inc(p.idx)
   add(result, n)
 
-proc getLevel(map: var TLevelMap, lvl: var int, c: char): int = 
-  if map[c] == 0: 
+proc getLevel(map: var TLevelMap, lvl: var int, c: char): int =
+  if map[c] == 0:
     inc(lvl)
     map[c] = lvl
   result = map[c]
 
-proc tokenAfterNewline(p: TRstParser): int = 
+proc tokenAfterNewline(p: TRstParser): int =
   result = p.idx
-  while true: 
+  while true:
     case p.tok[result].kind
-    of tkEof: 
-      break 
-    of tkIndent: 
+    of tkEof:
+      break
+    of tkIndent:
       inc(result)
-      break 
+      break
     else: inc(result)
-  
-proc isLineBlock(p: TRstParser): bool = 
+
+proc isLineBlock(p: TRstParser): bool =
   var j = tokenAfterNewline(p)
   result = (p.tok[p.idx].col == p.tok[j].col) and (p.tok[j].symbol == "|") or
       (p.tok[j].col > p.tok[p.idx].col)
 
-proc predNL(p: TRstParser): bool = 
+proc predNL(p: TRstParser): bool =
   result = true
   if p.idx > 0:
     result = p.tok[p.idx-1].kind == tkIndent and
         p.tok[p.idx-1].ival == currInd(p)
-  
-proc isDefList(p: TRstParser): bool = 
+
+proc isDefList(p: TRstParser): bool =
   var j = tokenAfterNewline(p)
   result = (p.tok[p.idx].col < p.tok[j].col) and
       (p.tok[j].kind in {tkWord, tkOther, tkPunct}) and
       (p.tok[j - 2].symbol != "::")
 
-proc isOptionList(p: TRstParser): bool = 
+proc isOptionList(p: TRstParser): bool =
   result = match(p, p.idx, "-w") or match(p, p.idx, "--w") or
            match(p, p.idx, "/w") or match(p, p.idx, "//w")
 
-proc whichSection(p: TRstParser): TRstNodeKind = 
+proc whichSection(p: TRstParser): TRstNodeKind =
   case p.tok[p.idx].kind
-  of tkAdornment: 
+  of tkAdornment:
     if match(p, p.idx + 1, "ii"): result = rnTransition
     elif match(p, p.idx + 1, " a"): result = rnTable
     elif match(p, p.idx + 1, "i"): result = rnOverline
     else: result = rnLeaf
-  of tkPunct: 
-    if match(p, tokenAfterNewline(p), "ai"): 
+  of tkPunct:
+    if match(p, tokenAfterNewline(p), "ai"):
       result = rnHeadline
-    elif p.tok[p.idx].symbol == "::": 
+    elif p.tok[p.idx].symbol == "::":
       result = rnLiteralBlock
     elif predNL(p) and
         ((p.tok[p.idx].symbol == "+") or (p.tok[p.idx].symbol == "*") or
-        (p.tok[p.idx].symbol == "-")) and (p.tok[p.idx + 1].kind == tkWhite): 
+        (p.tok[p.idx].symbol == "-")) and (p.tok[p.idx + 1].kind == tkWhite):
       result = rnBulletList
-    elif (p.tok[p.idx].symbol == "|") and isLineBlock(p): 
+    elif (p.tok[p.idx].symbol == "|") and isLineBlock(p):
       result = rnLineBlock
-    elif (p.tok[p.idx].symbol == "..") and predNL(p): 
+    elif (p.tok[p.idx].symbol == "..") and predNL(p):
       result = rnDirective
     elif match(p, p.idx, ":w:") and predNL(p):
       # (p.tok[p.idx].symbol == ":")
       result = rnFieldList
-    elif match(p, p.idx, "(e) "): 
+    elif match(p, p.idx, "(e) "):
       result = rnEnumList
-    elif match(p, p.idx, "+a+"): 
+    elif match(p, p.idx, "+a+"):
       result = rnGridTable
       rstMessage(p, meGridTableNotImplemented)
-    elif isDefList(p): 
+    elif isDefList(p):
       result = rnDefList
-    elif isOptionList(p): 
+    elif isOptionList(p):
       result = rnOptionList
-    else: 
+    else:
       result = rnParagraph
   of tkWord, tkOther, tkWhite:
     if match(p, tokenAfterNewline(p), "ai"): result = rnHeadline
@@ -1052,58 +1052,58 @@ proc whichSection(p: TRstParser): TRstNodeKind =
     elif isDefList(p): result = rnDefList
     else: result = rnParagraph
   else: result = rnLeaf
-  
-proc parseLineBlock(p: var TRstParser): PRstNode = 
+
+proc parseLineBlock(p: var TRstParser): PRstNode =
   result = nil
-  if p.tok[p.idx + 1].kind == tkWhite: 
+  if p.tok[p.idx + 1].kind == tkWhite:
     var col = p.tok[p.idx].col
     result = newRstNode(rnLineBlock)
     pushInd(p, p.tok[p.idx + 2].col)
     inc(p.idx, 2)
-    while true: 
+    while true:
       var item = newRstNode(rnLineBlockItem)
       parseSection(p, item)
       add(result, item)
       if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival == col) and
           (p.tok[p.idx + 1].symbol == "|") and
-          (p.tok[p.idx + 2].kind == tkWhite): 
+          (p.tok[p.idx + 2].kind == tkWhite):
         inc(p.idx, 3)
-      else: 
-        break 
+      else:
+        break
     popInd(p)
 
-proc parseParagraph(p: var TRstParser, result: PRstNode) = 
-  while true: 
+proc parseParagraph(p: var TRstParser, result: PRstNode) =
+  while true:
     case p.tok[p.idx].kind
-    of tkIndent: 
-      if p.tok[p.idx + 1].kind == tkIndent: 
+    of tkIndent:
+      if p.tok[p.idx + 1].kind == tkIndent:
         inc(p.idx)
-        break 
-      elif (p.tok[p.idx].ival == currInd(p)): 
+        break
+      elif (p.tok[p.idx].ival == currInd(p)):
         inc(p.idx)
         case whichSection(p)
-        of rnParagraph, rnLeaf, rnHeadline, rnOverline, rnDirective: 
+        of rnParagraph, rnLeaf, rnHeadline, rnOverline, rnDirective:
           add(result, newRstNode(rnLeaf, " "))
-        of rnLineBlock: 
+        of rnLineBlock:
           addIfNotNil(result, parseLineBlock(p))
-        else: break 
-      else: 
-        break 
-    of tkPunct: 
+        else: break
+      else:
+        break
+    of tkPunct:
       if (p.tok[p.idx].symbol == "::") and
           (p.tok[p.idx + 1].kind == tkIndent) and
-          (currInd(p) < p.tok[p.idx + 1].ival): 
+          (currInd(p) < p.tok[p.idx + 1].ival):
         add(result, newRstNode(rnLeaf, ":"))
         inc(p.idx)            # skip '::'
         add(result, parseLiteralBlock(p))
-        break 
-      else: 
+        break
+      else:
         parseInline(p, result)
-    of tkWhite, tkWord, tkAdornment, tkOther: 
+    of tkWhite, tkWord, tkAdornment, tkOther:
       parseInline(p, result)
     else: break
 
-proc parseHeadline(p: var TRstParser): PRstNode = 
+proc parseHeadline(p: var TRstParser): PRstNode =
   result = newRstNode(rnHeadline)
   parseUntilNewline(p, result)
   assert(p.tok[p.idx].kind == tkIndent)
@@ -1112,31 +1112,31 @@ proc parseHeadline(p: var TRstParser): PRstNode =
   inc(p.idx, 2)
   result.level = getLevel(p.s.underlineToLevel, p.s.uLevel, c)
 
-type 
+type
   TIntSeq = seq[int]
 
-proc tokEnd(p: TRstParser): int = 
+proc tokEnd(p: TRstParser): int =
   result = p.tok[p.idx].col + len(p.tok[p.idx].symbol) - 1
 
-proc getColumns(p: var TRstParser, cols: var TIntSeq) = 
+proc getColumns(p: var TRstParser, cols: var TIntSeq) =
   var L = 0
-  while true: 
+  while true:
     inc(L)
     setLen(cols, L)
     cols[L - 1] = tokEnd(p)
     assert(p.tok[p.idx].kind == tkAdornment)
     inc(p.idx)
-    if p.tok[p.idx].kind != tkWhite: break 
+    if p.tok[p.idx].kind != tkWhite: break
     inc(p.idx)
-    if p.tok[p.idx].kind != tkAdornment: break 
-  if p.tok[p.idx].kind == tkIndent: inc(p.idx)                
+    if p.tok[p.idx].kind != tkAdornment: break
+  if p.tok[p.idx].kind == tkIndent: inc(p.idx)
   # last column has no limit:
   cols[L - 1] = 32000
 
-proc parseDoc(p: var TRstParser): PRstNode
+proc parseDoc(p: var TRstParser): PRstNode {.gcsafe.}
 
-proc parseSimpleTable(p: var TRstParser): PRstNode = 
-  var 
+proc parseSimpleTable(p: var TRstParser): PRstNode =
+  var
     cols: TIntSeq
     row: seq[string]
     i, last, line: int
@@ -1148,36 +1148,36 @@ proc parseSimpleTable(p: var TRstParser): PRstNode =
   row = @[]
   a = nil
   c = p.tok[p.idx].symbol[0]
-  while true: 
-    if p.tok[p.idx].kind == tkAdornment: 
+  while true:
+    if p.tok[p.idx].kind == tkAdornment:
       last = tokenAfterNewline(p)
-      if p.tok[last].kind in {tkEof, tkIndent}: 
+      if p.tok[last].kind in {tkEof, tkIndent}:
         # skip last adornment line:
         p.idx = last
-        break 
+        break
       getColumns(p, cols)
       setLen(row, len(cols))
-      if a != nil: 
+      if a != nil:
         for j in 0..len(a)-1: a.sons[j].kind = rnTableHeaderCell
-    if p.tok[p.idx].kind == tkEof: break 
+    if p.tok[p.idx].kind == tkEof: break
     for j in countup(0, high(row)): row[j] = ""
     # the following while loop iterates over the lines a single cell may span:
     line = p.tok[p.idx].line
-    while true: 
+    while true:
       i = 0
-      while not (p.tok[p.idx].kind in {tkIndent, tkEof}): 
-        if (tokEnd(p) <= cols[i]): 
+      while not (p.tok[p.idx].kind in {tkIndent, tkEof}):
+        if (tokEnd(p) <= cols[i]):
           add(row[i], p.tok[p.idx].symbol)
           inc(p.idx)
-        else: 
+        else:
           if p.tok[p.idx].kind == tkWhite: inc(p.idx)
           inc(i)
       if p.tok[p.idx].kind == tkIndent: inc(p.idx)
-      if tokEnd(p) <= cols[0]: break 
-      if p.tok[p.idx].kind in {tkEof, tkAdornment}: break 
+      if tokEnd(p) <= cols[0]: break
+      if p.tok[p.idx].kind in {tkEof, tkAdornment}: break
       for j in countup(1, high(row)): add(row[j], '\x0A')
     a = newRstNode(rnTableRow)
-    for j in countup(0, high(row)): 
+    for j in countup(0, high(row)):
       initParser(q, p.s)
       q.col = cols[j]
       q.line = line - 1
@@ -1188,95 +1188,95 @@ proc parseSimpleTable(p: var TRstParser): PRstNode =
       add(a, b)
     add(result, a)
 
-proc parseTransition(p: var TRstParser): PRstNode = 
+proc parseTransition(p: var TRstParser): PRstNode =
   result = newRstNode(rnTransition)
   inc(p.idx)
   if p.tok[p.idx].kind == tkIndent: inc(p.idx)
   if p.tok[p.idx].kind == tkIndent: inc(p.idx)
-  
-proc parseOverline(p: var TRstParser): PRstNode = 
+
+proc parseOverline(p: var TRstParser): PRstNode =
   var c = p.tok[p.idx].symbol[0]
   inc(p.idx, 2)
   result = newRstNode(rnOverline)
-  while true: 
+  while true:
     parseUntilNewline(p, result)
-    if p.tok[p.idx].kind == tkIndent: 
+    if p.tok[p.idx].kind == tkIndent:
       inc(p.idx)
-      if p.tok[p.idx - 1].ival > currInd(p): 
+      if p.tok[p.idx - 1].ival > currInd(p):
         add(result, newRstNode(rnLeaf, " "))
-      else: 
-        break 
-    else: 
-      break 
+      else:
+        break
+    else:
+      break
   result.level = getLevel(p.s.overlineToLevel, p.s.oLevel, c)
-  if p.tok[p.idx].kind == tkAdornment: 
+  if p.tok[p.idx].kind == tkAdornment:
     inc(p.idx)                # XXX: check?
     if p.tok[p.idx].kind == tkIndent: inc(p.idx)
-  
-proc parseBulletList(p: var TRstParser): PRstNode = 
+
+proc parseBulletList(p: var TRstParser): PRstNode =
   result = nil
-  if p.tok[p.idx + 1].kind == tkWhite: 
+  if p.tok[p.idx + 1].kind == tkWhite:
     var bullet = p.tok[p.idx].symbol
     var col = p.tok[p.idx].col
     result = newRstNode(rnBulletList)
     pushInd(p, p.tok[p.idx + 2].col)
     inc(p.idx, 2)
-    while true: 
+    while true:
       var item = newRstNode(rnBulletItem)
       parseSection(p, item)
       add(result, item)
       if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival == col) and
           (p.tok[p.idx + 1].symbol == bullet) and
-          (p.tok[p.idx + 2].kind == tkWhite): 
+          (p.tok[p.idx + 2].kind == tkWhite):
         inc(p.idx, 3)
-      else: 
-        break 
+      else:
+        break
     popInd(p)
 
-proc parseOptionList(p: var TRstParser): PRstNode = 
+proc parseOptionList(p: var TRstParser): PRstNode =
   result = newRstNode(rnOptionList)
-  while true: 
+  while true:
     if isOptionList(p):
       var a = newRstNode(rnOptionGroup)
       var b = newRstNode(rnDescription)
       var c = newRstNode(rnOptionListItem)
       if match(p, p.idx, "//w"): inc(p.idx)
-      while not (p.tok[p.idx].kind in {tkIndent, tkEof}): 
-        if (p.tok[p.idx].kind == tkWhite) and (len(p.tok[p.idx].symbol) > 1): 
+      while not (p.tok[p.idx].kind in {tkIndent, tkEof}):
+        if (p.tok[p.idx].kind == tkWhite) and (len(p.tok[p.idx].symbol) > 1):
           inc(p.idx)
-          break 
+          break
         add(a, newLeaf(p))
         inc(p.idx)
       var j = tokenAfterNewline(p)
       if (j > 0) and (p.tok[j - 1].kind == tkIndent) and
-          (p.tok[j - 1].ival > currInd(p)): 
+          (p.tok[j - 1].ival > currInd(p)):
         pushInd(p, p.tok[j - 1].ival)
         parseSection(p, b)
         popInd(p)
-      else: 
+      else:
         parseLine(p, b)
       if (p.tok[p.idx].kind == tkIndent): inc(p.idx)
       add(c, a)
       add(c, b)
       add(result, c)
-    else: 
-      break 
-  
-proc parseDefinitionList(p: var TRstParser): PRstNode = 
+    else:
+      break
+
+proc parseDefinitionList(p: var TRstParser): PRstNode =
   result = nil
   var j = tokenAfterNewline(p) - 1
   if (j >= 1) and (p.tok[j].kind == tkIndent) and
-      (p.tok[j].ival > currInd(p)) and (p.tok[j - 1].symbol != "::"): 
+      (p.tok[j].ival > currInd(p)) and (p.tok[j - 1].symbol != "::"):
     var col = p.tok[p.idx].col
     result = newRstNode(rnDefList)
-    while true: 
+    while true:
       j = p.idx
       var a = newRstNode(rnDefName)
       parseLine(p, a)
       if (p.tok[p.idx].kind == tkIndent) and
           (p.tok[p.idx].ival > currInd(p)) and
           (p.tok[p.idx + 1].symbol != "::") and
-          not (p.tok[p.idx + 1].kind in {tkIndent, tkEof}): 
+          not (p.tok[p.idx + 1].kind in {tkIndent, tkEof}):
         pushInd(p, p.tok[p.idx].ival)
         var b = newRstNode(rnDefBody)
         parseSection(p, b)
@@ -1285,74 +1285,74 @@ proc parseDefinitionList(p: var TRstParser): PRstNode =
         add(c, b)
         add(result, c)
         popInd(p)
-      else: 
+      else:
         p.idx = j
-        break 
-      if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival == col): 
+        break
+      if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival == col):
         inc(p.idx)
         j = tokenAfterNewline(p) - 1
         if j >= 1 and p.tok[j].kind == tkIndent and p.tok[j].ival > col and
-            p.tok[j-1].symbol != "::" and p.tok[j+1].kind != tkIndent: 
+            p.tok[j-1].symbol != "::" and p.tok[j+1].kind != tkIndent:
           discard
-        else: 
-          break 
+        else:
+          break
     if len(result) == 0: result = nil
-  
-proc parseEnumList(p: var TRstParser): PRstNode = 
-  const 
+
+proc parseEnumList(p: var TRstParser): PRstNode =
+  const
     wildcards: array[0..2, string] = ["(e) ", "e) ", "e. "]
     wildpos: array[0..2, int] = [1, 0, 0]
   result = nil
   var w = 0
-  while w <= 2: 
-    if match(p, p.idx, wildcards[w]): break 
+  while w <= 2:
+    if match(p, p.idx, wildcards[w]): break
     inc(w)
-  if w <= 2: 
+  if w <= 2:
     var col = p.tok[p.idx].col
     result = newRstNode(rnEnumList)
     inc(p.idx, wildpos[w] + 3)
     var j = tokenAfterNewline(p)
-    if (p.tok[j].col == p.tok[p.idx].col) or match(p, j, wildcards[w]): 
+    if (p.tok[j].col == p.tok[p.idx].col) or match(p, j, wildcards[w]):
       pushInd(p, p.tok[p.idx].col)
-      while true: 
+      while true:
         var item = newRstNode(rnEnumItem)
         parseSection(p, item)
         add(result, item)
         if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival == col) and
-            match(p, p.idx + 1, wildcards[w]): 
+            match(p, p.idx + 1, wildcards[w]):
           inc(p.idx, wildpos[w] + 4)
-        else: 
-          break 
+        else:
+          break
       popInd(p)
-    else: 
+    else:
       dec(p.idx, wildpos[w] + 3)
       result = nil
 
-proc sonKind(father: PRstNode, i: int): TRstNodeKind = 
+proc sonKind(father: PRstNode, i: int): TRstNodeKind =
   result = rnLeaf
   if i < len(father): result = father.sons[i].kind
-  
-proc parseSection(p: var TRstParser, result: PRstNode) = 
-  while true: 
+
+proc parseSection(p: var TRstParser, result: PRstNode) =
+  while true:
     var leave = false
     assert(p.idx >= 0)
-    while p.tok[p.idx].kind == tkIndent: 
-      if currInd(p) == p.tok[p.idx].ival: 
+    while p.tok[p.idx].kind == tkIndent:
+      if currInd(p) == p.tok[p.idx].ival:
         inc(p.idx)
-      elif p.tok[p.idx].ival > currInd(p): 
+      elif p.tok[p.idx].ival > currInd(p):
         pushInd(p, p.tok[p.idx].ival)
         var a = newRstNode(rnBlockQuote)
         parseSection(p, a)
         add(result, a)
         popInd(p)
-      else: 
+      else:
         leave = true
         break
     if leave or p.tok[p.idx].kind == tkEof: break
     var a: PRstNode = nil
     var k = whichSection(p)
     case k
-    of rnLiteralBlock: 
+    of rnLiteralBlock:
       inc(p.idx)              # skip '::'
       a = parseLiteralBlock(p)
     of rnBulletList: a = parseBulletList(p)
@@ -1362,7 +1362,7 @@ proc parseSection(p: var TRstParser, result: PRstNode) =
     of rnLeaf: rstMessage(p, meNewSectionExpected)
     of rnParagraph: discard
     of rnDefList: a = parseDefinitionList(p)
-    of rnFieldList: 
+    of rnFieldList:
       if p.idx > 0: dec(p.idx)
       a = parseFields(p)
     of rnTransition: a = parseTransition(p)
@@ -1373,35 +1373,35 @@ proc parseSection(p: var TRstParser, result: PRstNode) =
     else:
       #InternalError("rst.parseSection()")
       discard
-    if a == nil and k != rnDirective: 
+    if a == nil and k != rnDirective:
       a = newRstNode(rnParagraph)
       parseParagraph(p, a)
     addIfNotNil(result, a)
-  if sonKind(result, 0) == rnParagraph and sonKind(result, 1) != rnParagraph: 
+  if sonKind(result, 0) == rnParagraph and sonKind(result, 1) != rnParagraph:
     result.sons[0].kind = rnInner
-  
-proc parseSectionWrapper(p: var TRstParser): PRstNode = 
+
+proc parseSectionWrapper(p: var TRstParser): PRstNode =
   result = newRstNode(rnInner)
   parseSection(p, result)
-  while (result.kind == rnInner) and (len(result) == 1): 
+  while (result.kind == rnInner) and (len(result) == 1):
     result = result.sons[0]
-  
+
 proc `$`(t: TToken): string =
   result = $t.kind & ' ' & (if isNil(t.symbol): "NIL" else: t.symbol)
 
-proc parseDoc(p: var TRstParser): PRstNode = 
+proc parseDoc(p: var TRstParser): PRstNode =
   result = parseSectionWrapper(p)
-  if p.tok[p.idx].kind != tkEof: 
+  if p.tok[p.idx].kind != tkEof:
     when false:
       assert isAllocatedPtr(cast[pointer](p.tok))
       for i in 0 .. high(p.tok):
-        assert isNil(p.tok[i].symbol) or 
+        assert isNil(p.tok[i].symbol) or
                isAllocatedPtr(cast[pointer](p.tok[i].symbol))
       echo "index: ", p.idx, " length: ", high(p.tok), "##",
           p.tok[p.idx-1], p.tok[p.idx], p.tok[p.idx+1]
     #assert isAllocatedPtr(cast[pointer](p.indentStack))
     rstMessage(p, meGeneralParseError)
-  
+
 type
   TDirFlag = enum
     hasArg, hasOptions, argIsFile, argIsWord
@@ -1421,55 +1421,55 @@ proc parseDirective(p: var TRstParser, flags: TDirFlags): PRstNode =
   result = newRstNode(rnDirective)
   var args: PRstNode = nil
   var options: PRstNode = nil
-  if hasArg in flags: 
+  if hasArg in flags:
     args = newRstNode(rnDirArg)
-    if argIsFile in flags: 
-      while true: 
+    if argIsFile in flags:
+      while true:
         case p.tok[p.idx].kind
-        of tkWord, tkOther, tkPunct, tkAdornment: 
+        of tkWord, tkOther, tkPunct, tkAdornment:
           add(args, newLeaf(p))
           inc(p.idx)
-        else: break 
+        else: break
     elif argIsWord in flags:
       while p.tok[p.idx].kind == tkWhite: inc(p.idx)
-      if p.tok[p.idx].kind == tkWord: 
+      if p.tok[p.idx].kind == tkWord:
         add(args, newLeaf(p))
         inc(p.idx)
       else:
         args = nil
-    else: 
+    else:
       parseLine(p, args)
   add(result, args)
-  if hasOptions in flags: 
+  if hasOptions in flags:
     if (p.tok[p.idx].kind == tkIndent) and (p.tok[p.idx].ival >= 3) and
-        (p.tok[p.idx + 1].symbol == ":"): 
+        (p.tok[p.idx + 1].symbol == ":"):
       options = parseFields(p)
   add(result, options)
-  
-proc indFollows(p: TRstParser): bool = 
+
+proc indFollows(p: TRstParser): bool =
   result = p.tok[p.idx].kind == tkIndent and p.tok[p.idx].ival > currInd(p)
-  
-proc parseDirective(p: var TRstParser, flags: TDirFlags, 
-                    contentParser: TSectionParser): PRstNode = 
+
+proc parseDirective(p: var TRstParser, flags: TDirFlags,
+                    contentParser: TSectionParser): PRstNode =
   ## Returns a generic rnDirective tree.
   ##
   ## The children are rnDirArg, rnFieldList and rnLineBlock. Any might be nil.
   result = parseDirective(p, flags)
-  if not isNil(contentParser) and indFollows(p): 
+  if not isNil(contentParser) and indFollows(p):
     pushInd(p, p.tok[p.idx].ival)
     var content = contentParser(p)
     popInd(p)
     add(result, content)
-  else: 
+  else:
     add(result, nil)
 
-proc parseDirBody(p: var TRstParser, contentParser: TSectionParser): PRstNode = 
-  if indFollows(p): 
+proc parseDirBody(p: var TRstParser, contentParser: TSectionParser): PRstNode =
+  if indFollows(p):
     pushInd(p, p.tok[p.idx].ival)
     result = contentParser(p)
     popInd(p)
-  
-proc dirInclude(p: var TRstParser): PRstNode = 
+
+proc dirInclude(p: var TRstParser): PRstNode =
   #
   #The following options are recognized:
   #
@@ -1490,18 +1490,18 @@ proc dirInclude(p: var TRstParser): PRstNode =
   var n = parseDirective(p, {hasArg, argIsFile, hasOptions}, nil)
   var filename = strip(addNodes(n.sons[0]))
   var path = p.s.findFile(filename)
-  if path == "": 
+  if path == "":
     rstMessage(p, meCannotOpenFile, filename)
-  else: 
+  else:
     # XXX: error handling; recursive file inclusion!
-    if getFieldValue(n, "literal") != "": 
+    if getFieldValue(n, "literal") != "":
       result = newRstNode(rnLiteralBlock)
       add(result, newRstNode(rnLeaf, readFile(path)))
     else:
       var q: TRstParser
       initParser(q, p.s)
       q.filename = filename
-      q.col += getTokens(readFile(path), false, q.tok) 
+      q.col += getTokens(readFile(path), false, q.tok)
       # workaround a GCC bug; more like the interior pointer bug?
       #if find(q.tok[high(q.tok)].symbol, "\0\x01\x02") > 0:
       #  InternalError("Too many binary zeros in include file")
@@ -1526,7 +1526,7 @@ proc dirCodeBlock(p: var TRstParser, nimrodExtension = false): PRstNode =
   ## file.
   result = parseDirective(p, {hasArg, hasOptions}, parseLiteralBlock)
   var filename = strip(getFieldValue(result, "file"))
-  if filename != "": 
+  if filename != "":
     var path = p.s.findFile(filename)
     if path == "": rstMessage(p, meCannotOpenFile, filename)
     var n = newRstNode(rnLiteralBlock)
@@ -1548,49 +1548,49 @@ proc dirCodeBlock(p: var TRstParser, nimrodExtension = false): PRstNode =
 
   result.kind = rnCodeBlock
 
-proc dirContainer(p: var TRstParser): PRstNode = 
+proc dirContainer(p: var TRstParser): PRstNode =
   result = parseDirective(p, {hasArg}, parseSectionWrapper)
   assert(result.kind == rnDirective)
   assert(len(result) == 3)
   result.kind = rnContainer
 
-proc dirImage(p: var TRstParser): PRstNode = 
+proc dirImage(p: var TRstParser): PRstNode =
   result = parseDirective(p, {hasOptions, hasArg, argIsFile}, nil)
   result.kind = rnImage
 
-proc dirFigure(p: var TRstParser): PRstNode = 
-  result = parseDirective(p, {hasOptions, hasArg, argIsFile}, 
+proc dirFigure(p: var TRstParser): PRstNode =
+  result = parseDirective(p, {hasOptions, hasArg, argIsFile},
                           parseSectionWrapper)
   result.kind = rnFigure
 
-proc dirTitle(p: var TRstParser): PRstNode = 
+proc dirTitle(p: var TRstParser): PRstNode =
   result = parseDirective(p, {hasArg}, nil)
   result.kind = rnTitle
 
-proc dirContents(p: var TRstParser): PRstNode = 
+proc dirContents(p: var TRstParser): PRstNode =
   result = parseDirective(p, {hasArg}, nil)
   result.kind = rnContents
 
-proc dirIndex(p: var TRstParser): PRstNode = 
+proc dirIndex(p: var TRstParser): PRstNode =
   result = parseDirective(p, {}, parseSectionWrapper)
   result.kind = rnIndex
 
 proc dirRawAux(p: var TRstParser, result: var PRstNode, kind: TRstNodeKind,
-               contentParser: TSectionParser) = 
+               contentParser: TSectionParser) =
   var filename = getFieldValue(result, "file")
-  if filename.len > 0: 
+  if filename.len > 0:
     var path = p.s.findFile(filename)
-    if path.len == 0: 
+    if path.len == 0:
       rstMessage(p, meCannotOpenFile, filename)
-    else: 
+    else:
       var f = readFile(path)
       result = newRstNode(kind)
       add(result, newRstNode(rnLeaf, f))
-  else:      
+  else:
     result.kind = kind
     add(result, parseDirBody(p, contentParser))
 
-proc dirRaw(p: var TRstParser): PRstNode = 
+proc dirRaw(p: var TRstParser): PRstNode =
   #
   #The following options are recognized:
   #
@@ -1603,19 +1603,19 @@ proc dirRaw(p: var TRstParser): PRstNode =
   if result.sons[0] != nil:
     if cmpIgnoreCase(result.sons[0].sons[0].text, "html") == 0:
       dirRawAux(p, result, rnRawHtml, parseLiteralBlock)
-    elif cmpIgnoreCase(result.sons[0].sons[0].text, "latex") == 0: 
+    elif cmpIgnoreCase(result.sons[0].sons[0].text, "latex") == 0:
       dirRawAux(p, result, rnRawLatex, parseLiteralBlock)
     else:
       rstMessage(p, meInvalidDirective, result.sons[0].sons[0].text)
   else:
     dirRawAux(p, result, rnRaw, parseSectionWrapper)
 
-proc parseDotDot(p: var TRstParser): PRstNode = 
+proc parseDotDot(p: var TRstParser): PRstNode =
   result = nil
   var col = p.tok[p.idx].col
   inc(p.idx)
   var d = getDirective(p)
-  if d != "": 
+  if d != "":
     pushInd(p, col)
     case getDirKind(d)
     of dkInclude: result = dirInclude(p)
@@ -1634,66 +1634,66 @@ proc parseDotDot(p: var TRstParser): PRstNode =
     of dkIndex: result = dirIndex(p)
     else: rstMessage(p, meInvalidDirective, d)
     popInd(p)
-  elif match(p, p.idx, " _"): 
+  elif match(p, p.idx, " _"):
     # hyperlink target:
     inc(p.idx, 2)
     var a = getReferenceName(p, ":")
     if p.tok[p.idx].kind == tkWhite: inc(p.idx)
     var b = untilEol(p)
     setRef(p, rstnodeToRefname(a), b)
-  elif match(p, p.idx, " |"): 
+  elif match(p, p.idx, " |"):
     # substitution definitions:
     inc(p.idx, 2)
     var a = getReferenceName(p, "|")
     var b: PRstNode
     if p.tok[p.idx].kind == tkWhite: inc(p.idx)
-    if cmpIgnoreStyle(p.tok[p.idx].symbol, "replace") == 0: 
+    if cmpIgnoreStyle(p.tok[p.idx].symbol, "replace") == 0:
       inc(p.idx)
       expect(p, "::")
       b = untilEol(p)
-    elif cmpIgnoreStyle(p.tok[p.idx].symbol, "image") == 0: 
+    elif cmpIgnoreStyle(p.tok[p.idx].symbol, "image") == 0:
       inc(p.idx)
       b = dirImage(p)
-    else: 
+    else:
       rstMessage(p, meInvalidDirective, p.tok[p.idx].symbol)
     setSub(p, addNodes(a), b)
-  elif match(p, p.idx, " ["): 
+  elif match(p, p.idx, " ["):
     # footnotes, citations
     inc(p.idx, 2)
     var a = getReferenceName(p, "]")
     if p.tok[p.idx].kind == tkWhite: inc(p.idx)
     var b = untilEol(p)
     setRef(p, rstnodeToRefname(a), b)
-  else: 
+  else:
     result = parseComment(p)
-  
-proc resolveSubs(p: var TRstParser, n: PRstNode): PRstNode = 
+
+proc resolveSubs(p: var TRstParser, n: PRstNode): PRstNode =
   result = n
-  if n == nil: return 
+  if n == nil: return
   case n.kind
-  of rnSubstitutionReferences: 
+  of rnSubstitutionReferences:
     var x = findSub(p, n)
-    if x >= 0: 
+    if x >= 0:
       result = p.s.subs[x].value
-    else: 
+    else:
       var key = addNodes(n)
       var e = getEnv(key)
       if e != "": result = newRstNode(rnLeaf, e)
       else: rstMessage(p, mwUnknownSubstitution, key)
-  of rnRef: 
+  of rnRef:
     var y = findRef(p, rstnodeToRefname(n))
-    if y != nil: 
+    if y != nil:
       result = newRstNode(rnHyperlink)
       n.kind = rnInner
       add(result, n)
       add(result, y)
-  of rnLeaf: 
+  of rnLeaf:
     discard
-  of rnContents: 
+  of rnContents:
     p.hasToc = true
-  else: 
+  else:
     for i in countup(0, len(n) - 1): n.sons[i] = resolveSubs(p, n.sons[i])
-  
+
 proc rstParse*(text, filename: string,
                line, column: int, hasToc: var bool,
                options: TRstParseOptions,
diff --git a/lib/packages/docutils/rstast.nim b/lib/packages/docutils/rstast.nim
index 614001d76..c3956ab8b 100644
--- a/lib/packages/docutils/rstast.nim
+++ b/lib/packages/docutils/rstast.nim
@@ -30,7 +30,7 @@ type
     rnField,                  # a field item
     rnFieldName,              # consisting of a field name ...
     rnFieldBody,              # ... and a field body
-    rnOptionList, rnOptionListItem, rnOptionGroup, rnOption, rnOptionString, 
+    rnOptionList, rnOptionListItem, rnOptionGroup, rnOption, rnOptionString,
     rnOptionArgument, rnDescription, rnLiteralBlock, rnQuotedLiteralBlock,
     rnLineBlock,              # the | thingie
     rnLineBlockItem,          # sons of the | thing
@@ -50,7 +50,7 @@ type
                               #     * `file#id <file#id>'_
     rnSubstitutionDef,        # a definition of a substitution
     rnGeneralRole,            # Inline markup:
-    rnSub, rnSup, rnIdx, 
+    rnSub, rnSup, rnIdx,
     rnEmphasis,               # "*"
     rnStrongEmphasis,         # "**"
     rnTripleEmphasis,         # "***"
@@ -71,25 +71,25 @@ type
     level*: int               ## valid for some node kinds
     sons*: TRstNodeSeq        ## the node's sons
 
-proc len*(n: PRstNode): int = 
+proc len*(n: PRstNode): int =
   result = len(n.sons)
 
-proc newRstNode*(kind: TRstNodeKind): PRstNode = 
+proc newRstNode*(kind: TRstNodeKind): PRstNode =
   new(result)
   result.sons = @[]
   result.kind = kind
 
-proc newRstNode*(kind: TRstNodeKind, s: string): PRstNode = 
+proc newRstNode*(kind: TRstNodeKind, s: string): PRstNode =
   result = newRstNode(kind)
   result.text = s
 
-proc lastSon*(n: PRstNode): PRstNode = 
+proc lastSon*(n: PRstNode): PRstNode =
   result = n.sons[len(n.sons)-1]
 
 proc add*(father, son: PRstNode) =
   add(father.sons, son)
 
-proc addIfNotNil*(father, son: PRstNode) = 
+proc addIfNotNil*(father, son: PRstNode) =
   if son != nil: add(father, son)
 
 
@@ -98,26 +98,27 @@ type
     indent: int
     verbatim: int
 
-proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string)
+proc renderRstToRst(d: var TRenderContext, n: PRstNode,
+                    result: var string) {.gcsafe.}
 
-proc renderRstSons(d: var TRenderContext, n: PRstNode, result: var string) = 
-  for i in countup(0, len(n) - 1): 
+proc renderRstSons(d: var TRenderContext, n: PRstNode, result: var string) =
+  for i in countup(0, len(n) - 1):
     renderRstToRst(d, n.sons[i], result)
-  
+
 proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
   # this is needed for the index generation; it may also be useful for
   # debugging, but most code is already debugged...
-  const 
+  const
     lvlToChar: array[0..8, char] = ['!', '=', '-', '~', '`', '<', '*', '|', '+']
   if n == nil: return
   var ind = spaces(d.indent)
   case n.kind
-  of rnInner: 
+  of rnInner:
     renderRstSons(d, n, result)
   of rnHeadline:
     result.add("\n")
     result.add(ind)
-    
+
     let oldLen = result.len
     renderRstSons(d, n, result)
     let headlineLen = result.len - oldLen
@@ -131,16 +132,16 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
 
     var headline = ""
     renderRstSons(d, n, headline)
-    
+
     let lvl = repeat(lvlToChar[n.level], headline.len - d.indent)
     result.add(lvl)
     result.add("\n")
     result.add(headline)
-    
+
     result.add("\n")
     result.add(ind)
     result.add(lvl)
-  of rnTransition: 
+  of rnTransition:
     result.add("\n\n")
     result.add(ind)
     result.add repeat('-', 78-d.indent)
@@ -149,11 +150,11 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     result.add("\n\n")
     result.add(ind)
     renderRstSons(d, n, result)
-  of rnBulletItem: 
+  of rnBulletItem:
     inc(d.indent, 2)
     var tmp = ""
     renderRstSons(d, n, tmp)
-    if tmp.len > 0: 
+    if tmp.len > 0:
       result.add("\n")
       result.add(ind)
       result.add("* ")
@@ -163,22 +164,22 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     inc(d.indent, 4)
     var tmp = ""
     renderRstSons(d, n, tmp)
-    if tmp.len > 0: 
+    if tmp.len > 0:
       result.add("\n")
       result.add(ind)
       result.add("(#) ")
       result.add(tmp)
     dec(d.indent, 4)
-  of rnOptionList, rnFieldList, rnDefList, rnDefItem, rnLineBlock, rnFieldName, 
-     rnFieldBody, rnStandaloneHyperlink, rnBulletList, rnEnumList: 
+  of rnOptionList, rnFieldList, rnDefList, rnDefItem, rnLineBlock, rnFieldName,
+     rnFieldBody, rnStandaloneHyperlink, rnBulletList, rnEnumList:
     renderRstSons(d, n, result)
-  of rnDefName: 
+  of rnDefName:
     result.add("\n\n")
     result.add(ind)
     renderRstSons(d, n, result)
   of rnDefBody:
     inc(d.indent, 2)
-    if n.sons[0].kind != rnBulletList: 
+    if n.sons[0].kind != rnBulletList:
       result.add("\n")
       result.add(ind)
       result.add("  ")
@@ -187,10 +188,10 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
   of rnField:
     var tmp = ""
     renderRstToRst(d, n.sons[0], tmp)
-    
+
     var L = max(tmp.len + 3, 30)
     inc(d.indent, L)
-    
+
     result.add "\n"
     result.add ind
     result.add ':'
@@ -198,9 +199,9 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     result.add ':'
     result.add spaces(L - tmp.len - 2)
     renderRstToRst(d, n.sons[1], result)
-    
+
     dec(d.indent, L)
-  of rnLineBlockItem: 
+  of rnLineBlockItem:
     result.add("\n")
     result.add(ind)
     result.add("| ")
@@ -209,11 +210,11 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     inc(d.indent, 2)
     renderRstSons(d, n, result)
     dec(d.indent, 2)
-  of rnRef: 
+  of rnRef:
     result.add("`")
     renderRstSons(d, n, result)
     result.add("`_")
-  of rnHyperlink: 
+  of rnHyperlink:
     result.add('`')
     renderRstToRst(d, n.sons[0], result)
     result.add(" <")
@@ -225,23 +226,23 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     result.add("`:")
     renderRstToRst(d, n.sons[1],result)
     result.add(':')
-  of rnSub: 
+  of rnSub:
     result.add('`')
     renderRstSons(d, n, result)
     result.add("`:sub:")
-  of rnSup: 
+  of rnSup:
     result.add('`')
     renderRstSons(d, n, result)
     result.add("`:sup:")
-  of rnIdx: 
+  of rnIdx:
     result.add('`')
     renderRstSons(d, n, result)
     result.add("`:idx:")
-  of rnEmphasis: 
+  of rnEmphasis:
     result.add("*")
     renderRstSons(d, n, result)
     result.add("*")
-  of rnStrongEmphasis: 
+  of rnStrongEmphasis:
     result.add("**")
     renderRstSons(d, n, result)
     result.add("**")
@@ -249,11 +250,11 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     result.add("***")
     renderRstSons(d, n, result)
     result.add("***")
-  of rnInterpretedText: 
+  of rnInterpretedText:
     result.add('`')
     renderRstSons(d, n, result)
     result.add('`')
-  of rnInlineLiteral: 
+  of rnInlineLiteral:
     inc(d.verbatim)
     result.add("``")
     renderRstSons(d, n, result)
@@ -266,11 +267,11 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
       result.add("\\\\") # XXX: escape more special characters!
     else:
       result.add(n.text)
-  of rnIndex: 
+  of rnIndex:
     result.add("\n\n")
     result.add(ind)
     result.add(".. index::\n")
-    
+
     inc(d.indent, 3)
     if n.sons[2] != nil: renderRstSons(d, n.sons[2], result)
     dec(d.indent, 3)
@@ -280,7 +281,7 @@ proc renderRstToRst(d: var TRenderContext, n: PRstNode, result: var string) =
     result.add(".. contents::")
   else:
     result.add("Error: cannot render: " & $n.kind)
-  
+
 proc renderRstToRst*(n: PRstNode, result: var string) =
   ## renders `n` into its string representation and appends to `result`.
   var d: TRenderContext
@@ -302,7 +303,7 @@ proc renderRstToJsonNode(node: PRstNode): JsonNode =
 
 proc renderRstToJson*(node: PRstNode): string =
   ## Writes the given RST node as JSON that is in the form
-  ## :: 
+  ## ::
   ##   {
   ##     "kind":string node.kind,
   ##     "text":optional string node.text,
diff --git a/lib/packages/docutils/rstgen.nim b/lib/packages/docutils/rstgen.nim
index a385336d6..da05be9bf 100644
--- a/lib/packages/docutils/rstgen.nim
+++ b/lib/packages/docutils/rstgen.nim
@@ -681,7 +681,14 @@ proc renderHeadline(d: PDoc, n: PRstNode, result: var string) =
   var tmp = ""
   for i in countup(0, len(n) - 1): renderRstToOut(d, n.sons[i], tmp)
   d.currentSection = tmp
-  var refname = rstnodeToRefname(n)
+  # Find the last higher level section for unique reference name
+  var sectionPrefix = ""
+  for i in countdown(d.tocPart.high, 0):
+    let n2 = d.tocPart[i].n
+    if n2.level < n.level:
+      sectionPrefix = rstnodeToRefname(n2) & "-"
+      break
+  var refname = sectionPrefix & rstnodeToRefname(n)
   if d.hasToc:
     var length = len(d.tocPart)
     setLen(d.tocPart, length + 1)
diff --git a/lib/posix/posix.nim b/lib/posix/posix.nim
index 7d3e3ddba..0c7b84090 100644
--- a/lib/posix/posix.nim
+++ b/lib/posix/posix.nim
@@ -94,10 +94,12 @@ type
   Tdirent* {.importc: "struct dirent",
              header: "<dirent.h>", final, pure.} = object ## dirent_t struct
     d_ino*: Tino  ## File serial number.
-    d_off*: TOff  ## Not an offset. Value that ``telldir()`` would return.
-    d_reclen*: cshort ## Length of this record. (not POSIX)
-    d_type*: int8 ## Type of file; not supported by all filesystem types.
-                  ## (not POSIX)
+    when defined(linux) or defined(macosx) or defined(bsd):
+      d_reclen*: cshort ## Length of this record. (not POSIX)
+      d_type*: int8 ## Type of file; not supported by all filesystem types.
+                    ## (not POSIX)
+      when defined(linux) or defined(bsd):
+        d_off*: TOff  ## Not an offset. Value that ``telldir()`` would return.
     d_name*: array [0..255, char] ## Name of entry.
 
   Tflock* {.importc: "struct flock", final, pure,
@@ -1578,8 +1580,11 @@ else:
 
 when defined(macosx):
   # We can't use the NOSIGNAL flag in the ``send`` function, it has no effect
-  var
+  # Instead we should use SO_NOSIGPIPE in setsockopt
+  const
     MSG_NOSIGNAL* = 0'i32
+  var
+    SO_NOSIGPIPE* {.importc, header: "<sys/socket.h>".}: cint
 else:
   var
     MSG_NOSIGNAL* {.importc, header: "<sys/socket.h>".}: cint
diff --git a/lib/pure/algorithm.nim b/lib/pure/algorithm.nim
index 08d224dfd..68960e2e8 100644
--- a/lib/pure/algorithm.nim
+++ b/lib/pure/algorithm.nim
@@ -24,7 +24,7 @@ proc `*`*(x: int, order: SortOrder): int {.inline.} =
   var y = order.ord - 1
   result = (x xor y) - y
 
-proc reverse*[T](a: var openArray[T], first, last: int) =
+proc reverse*[T](a: var openArray[T], first, last: Natural) =
   ## reverses the array ``a[first..last]``.
   var x = first
   var y = last
@@ -37,7 +37,7 @@ proc reverse*[T](a: var openArray[T]) =
   ## reverses the array `a`.
   reverse(a, 0, a.high)
 
-proc reversed*[T](a: openArray[T], first, last: int): seq[T] =
+proc reversed*[T](a: openArray[T], first, last: Natural): seq[T] =
   ## returns the reverse of the array `a[first..last]`.
   result = newSeq[T](last - first + 1)
   var x = first
@@ -253,16 +253,16 @@ proc product*[T](x: openArray[seq[T]]): seq[seq[T]] =
   while true:
     while indexes[index] == -1:
       indexes[index] = initial[index]
-      index +=1
+      index += 1
       if index == x.len: return
-      indexes[index] -=1
+      indexes[index] -= 1
     for ni, i in indexes:
       next[ni] = x[ni][i]
     var res: seq[T]
     shallowCopy(res, next)
     result.add(res)
     index = 0
-    indexes[index] -=1
+    indexes[index] -= 1
 
 proc nextPermutation*[T](x: var openarray[T]): bool {.discardable.} =
   ## Calculates the next lexicographic permutation, directly modifying ``x``.
diff --git a/lib/pure/asyncdispatch.nim b/lib/pure/asyncdispatch.nim
index a8caf809e..27f77cef2 100644
--- a/lib/pure/asyncdispatch.nim
+++ b/lib/pure/asyncdispatch.nim
@@ -841,6 +841,8 @@ else:
   proc newAsyncRawSocket*(domain: cint, typ: cint, protocol: cint): TAsyncFD =
     result = newRawSocket(domain, typ, protocol).TAsyncFD
     result.SocketHandle.setBlocking(false)
+    when defined(macosx):
+        result.SocketHandle.setSockOptInt(SOL_SOCKET, SO_NOSIGPIPE, 1)
     register(result)
 
   proc newAsyncRawSocket*(domain: Domain = AF_INET,
@@ -848,6 +850,8 @@ else:
                protocol: Protocol = IPPROTO_TCP): TAsyncFD =
     result = newRawSocket(domain, typ, protocol).TAsyncFD
     result.SocketHandle.setBlocking(false)
+    when defined(macosx):
+        result.SocketHandle.setSockOptInt(SOL_SOCKET, SO_NOSIGPIPE, 1)
     register(result)
 
   proc closeSocket*(sock: TAsyncFD) =
@@ -959,7 +963,6 @@ else:
       result = true
       let res = recv(sock.SocketHandle, addr readBuffer[0], size.cint,
                      flags.toOSFlags())
-      #echo("recv cb res: ", res)
       if res < 0:
         let lastError = osLastError()
         if lastError.int32 notin {EINTR, EWOULDBLOCK, EAGAIN}:
@@ -1064,13 +1067,13 @@ proc accept*(socket: TAsyncFD,
 
 # -- Await Macro
 
-proc skipUntilStmtList(node: PNimrodNode): PNimrodNode {.compileTime.} =
+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: PNimrodNode): PNimrodNode {.compileTime.} =
+proc skipStmtList(node: NimNode): NimNode {.compileTime.} =
   result = node
   if node[0].kind == nnkStmtList:
     result = node[0]
@@ -1098,11 +1101,11 @@ template createCb(retFutureSym, iteratorNameSym,
   cb()
   #{.pop.}
 proc generateExceptionCheck(futSym,
-    tryStmt, rootReceiver, fromNode: PNimrodNode): PNimrodNode {.compileTime.} =
+    tryStmt, rootReceiver, fromNode: NimNode): NimNode {.compileTime.} =
   if tryStmt.kind == nnkNilLit:
     result = rootReceiver
   else:
-    var exceptionChecks: seq[tuple[cond, body: PNimrodNode]] = @[]
+    var exceptionChecks: seq[tuple[cond, body: NimNode]] = @[]
     let errorNode = newDotExpr(futSym, newIdentNode("error"))
     for i in 1 .. <tryStmt.len:
       let exceptBranch = tryStmt[i]
@@ -1110,7 +1113,7 @@ proc generateExceptionCheck(futSym,
         exceptionChecks.add((newIdentNode("true"), exceptBranch[0]))
       else:
         var exceptIdentCount = 0
-        var ifCond: PNimrodNode
+        var ifCond: NimNode
         for i in 0 .. <exceptBranch.len:
           let child = exceptBranch[i]
           if child.kind == nnkIdent:
@@ -1144,10 +1147,10 @@ proc generateExceptionCheck(futSym,
     )
     result.add elseNode
 
-template createVar(result: var PNimrodNode, futSymName: string,
-                   asyncProc: PNimrodNode,
+template createVar(result: var NimNode, futSymName: string,
+                   asyncProc: NimNode,
                    valueReceiver, rootReceiver: expr,
-                   fromNode: PNimrodNode) =
+                   fromNode: NimNode) =
   result = newNimNode(nnkStmtList, fromNode)
   var futSym = genSym(nskVar, "future")
   result.add newVarStmt(futSym, asyncProc) # -> var future<x> = y
@@ -1155,9 +1158,9 @@ template createVar(result: var PNimrodNode, futSymName: string,
   valueReceiver = newDotExpr(futSym, newIdentNode("read")) # -> future<x>.read
   result.add generateExceptionCheck(futSym, tryStmt, rootReceiver, fromNode)
 
-proc processBody(node, retFutureSym: PNimrodNode,
+proc processBody(node, retFutureSym: NimNode,
                  subTypeIsVoid: bool,
-                 tryStmt: PNimrodNode): PNimrodNode {.compileTime.} =
+                 tryStmt: NimNode): NimNode {.compileTime.} =
   #echo(node.treeRepr)
   result = node
   case node.kind
@@ -1183,7 +1186,7 @@ proc processBody(node, retFutureSym: PNimrodNode,
         result = newNimNode(nnkYieldStmt, node).add(node[1]) # -> yield x
       of nnkCall, nnkCommand:
         # await foo(p, x)
-        var futureValue: PNimrodNode
+        var futureValue: NimNode
         result.createVar("future" & $node[1][0].toStrLit, node[1], futureValue,
                   futureValue, node)
       else:
@@ -1232,8 +1235,8 @@ proc processBody(node, retFutureSym: PNimrodNode,
       # working in ``except``?
       tryBody[1] = processBody(n[1], retFutureSym, subTypeIsVoid, nil)
 
-    proc processForTry(n: PNimrodNode, i: var int,
-                       res: PNimrodNode): bool {.compileTime.} =
+    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.
@@ -1273,9 +1276,9 @@ proc processBody(node, retFutureSym: PNimrodNode,
   else: discard
 
   for i in 0 .. <result.len:
-    result[i] = processBody(result[i], retFutureSym, subTypeIsVoid, tryStmt)
+    result[i] = processBody(result[i], retFutureSym, subTypeIsVoid, nil)
 
-proc getName(node: PNimrodNode): string {.compileTime.} =
+proc getName(node: NimNode): string {.compileTime.} =
   case node.kind
   of nnkPostfix:
     return $node[1].ident
@@ -1378,8 +1381,8 @@ macro async*(prc: stmt): stmt {.immediate.} =
   result[6] = outerProcBody
 
   #echo(treeRepr(result))
-  if prc[0].getName == "test3":
-    echo(toStrLit(result))
+  #if prc[0].getName == "test":
+  #  echo(toStrLit(result))
 
 proc recvLine*(socket: TAsyncFD): Future[string] {.async.} =
   ## Reads a line of data from ``socket``. Returned future will complete once
diff --git a/lib/pure/asyncftpclient.nim b/lib/pure/asyncftpclient.nim
index 8558ad10d..96f54b49e 100644
--- a/lib/pure/asyncftpclient.nim
+++ b/lib/pure/asyncftpclient.nim
@@ -61,8 +61,8 @@ proc pasv(ftp: AsyncFtpClient) {.async.} =
   assertReply(pasvMsg, "227")
   var betweenParens = captureBetween(pasvMsg.string, '(', ')')
   var nums = betweenParens.split(',')
-  var ip = nums[0.. -3]
-  var port = nums[-2.. -1]
+  var ip = nums[0.. ^3]
+  var port = nums[^2.. ^1]
   var properPort = port[0].parseInt()*256+port[1].parseInt()
   await ftp.dsock.connect(ip.join("."), Port(properPort.toU16))
   ftp.dsockConnected = true
diff --git a/lib/pure/asyncio.nim b/lib/pure/asyncio.nim
index 6a7cbe396..f58bb4302 100644
--- a/lib/pure/asyncio.nim
+++ b/lib/pure/asyncio.nim
@@ -18,8 +18,8 @@ import sockets, os
 ## This module implements an asynchronous event loop together with asynchronous
 ## sockets which use this event loop.
 ## It is akin to Python's asyncore module. Many modules that use sockets
-## have an implementation for this module, those modules should all have a 
-## ``register`` function which you should use to add the desired objects to a 
+## have an implementation for this module, those modules should all have a
+## ``register`` function which you should use to add the desired objects to a
 ## dispatcher which you created so
 ## that you can receive the events associated with that module's object.
 ##
@@ -27,19 +27,19 @@ import sockets, os
 ## function in a while loop.
 ##
 ## **Note:** Most modules have tasks which need to be ran regularly, this is
-## why you should not call ``poll`` with a infinite timeout, or even a 
+## why you should not call ``poll`` with a infinite timeout, or even a
 ## very long one. In most cases the default timeout is fine.
 ##
 ## **Note:** This module currently only supports select(), this is limited by
 ## FD_SETSIZE, which is usually 1024. So you may only be able to use 1024
 ## sockets at a time.
-## 
+##
 ## Most (if not all) modules that use asyncio provide a userArg which is passed
 ## on with the events. The type that you set userArg to must be inheriting from
 ## ``RootObj``!
 ##
-## **Note:** If you want to provide async ability to your module please do not 
-## use the ``Delegate`` object, instead use ``AsyncSocket``. It is possible 
+## **Note:** If you want to provide async ability to your module please do not
+## use the ``Delegate`` object, instead use ``AsyncSocket``. It is possible
 ## that in the future this type's fields will not be exported therefore breaking
 ## your code.
 ##
@@ -59,11 +59,11 @@ import sockets, os
 ## socket which will give you the client which is connecting. You should then
 ## set any events that you want to use on that client and add it to your dispatcher
 ## using the ``register`` procedure.
-## 
+##
 ## An example ``handleAccept`` follows:
-## 
+##
 ## .. code-block:: nim
-##   
+##
 ##    var disp = newDispatcher()
 ##    ...
 ##    proc handleAccept(s: AsyncSocket) =
@@ -74,7 +74,7 @@ import sockets, os
 ##      client.handleRead = ...
 ##      disp.register(client)
 ##    ...
-## 
+##
 ## For client sockets you should only be interested in the ``handleRead`` and
 ## ``handleConnect`` events. The former gets called whenever the socket has
 ## received messages and can be read from and the latter gets called whenever
@@ -83,14 +83,14 @@ import sockets, os
 ##
 ## Getting a blocking client from an AsyncSocket
 ## =============================================
-## 
+##
 ## If you need a asynchronous server socket but you wish to process the clients
 ## synchronously then you can use the ``getSocket`` converter to get
 ## a ``Socket`` from the ``AsyncSocket`` object, this can then be combined
 ## with ``accept`` like so:
 ##
 ## .. code-block:: nim
-##    
+##
 ##    proc handleAccept(s: AsyncSocket) =
 ##      var client: Socket
 ##      getSocket(s).accept(client)
@@ -113,11 +113,11 @@ type
     handleWrite*: proc (h: RootRef) {.nimcall, gcsafe.}
     handleError*: proc (h: RootRef) {.nimcall, gcsafe.}
     hasDataBuffered*: proc (h: RootRef): bool {.nimcall, gcsafe.}
-    
+
     open*: bool
     task*: proc (h: RootRef) {.nimcall, gcsafe.}
     mode*: FileMode
-    
+
   Delegate* = ref DelegateObj
 
   Dispatcher* = ref DispatcherObj
@@ -144,7 +144,7 @@ type
     deleg: Delegate
 
   SocketStatus* = enum
-    SockIdle, SockConnecting, SockConnected, SockListening, SockClosed, 
+    SockIdle, SockConnecting, SockConnected, SockListening, SockClosed,
     SockUDPBound
 
 {.deprecated: [TDelegate: DelegateObj, PDelegate: Delegate,
@@ -176,8 +176,8 @@ proc newAsyncSocket(): AsyncSocket =
   result.lineBuffer = "".TaintedString
   result.sendBuffer = ""
 
-proc asyncSocket*(domain: Domain = AF_INET, typ: SockType = SOCK_STREAM, 
-                  protocol: Protocol = IPPROTO_TCP, 
+proc asyncSocket*(domain: Domain = AF_INET, typ: SockType = SOCK_STREAM,
+                  protocol: Protocol = IPPROTO_TCP,
                   buffered = true): AsyncSocket =
   ## Initialises an AsyncSocket object. If a socket cannot be initialised
   ## EOS is raised.
@@ -236,7 +236,7 @@ proc asyncSockHandleWrite(h: RootRef) =
     if AsyncSocket(h).socket.isSSL and not
          AsyncSocket(h).socket.gotHandshake:
       return
-  
+
   if AsyncSocket(h).info == SockConnecting:
     AsyncSocket(h).handleConnect(AsyncSocket(h))
     AsyncSocket(h).info = SockConnected
@@ -256,10 +256,10 @@ proc asyncSockHandleWrite(h: RootRef) =
           # do nothing instead.
           discard
         elif bytesSent != sock.sendBuffer.len:
-          sock.sendBuffer = sock.sendBuffer[bytesSent .. -1]
+          sock.sendBuffer = sock.sendBuffer[bytesSent .. ^1]
         elif bytesSent == sock.sendBuffer.len:
           sock.sendBuffer = ""
-        
+
         if AsyncSocket(h).handleWrite != nil:
           AsyncSocket(h).handleWrite(AsyncSocket(h))
       except OSError:
@@ -284,7 +284,7 @@ when defined(ssl):
       else:
         # handshake will set socket's ``sslNoHandshake`` field.
         discard AsyncSocket(h).socket.handshake()
-        
+
 
 proc asyncSockTask(h: RootRef) =
   when defined(ssl):
@@ -377,9 +377,9 @@ proc acceptAddr*(server: AsyncSocket, client: var AsyncSocket,
 
   if c == invalidSocket: raiseSocketError(server.socket)
   c.setBlocking(false) # TODO: Needs to be tested.
-  
+
   # deleg.open is set in ``toDelegate``.
-  
+
   client.socket = c
   client.lineBuffer = "".TaintedString
   client.sendBuffer = ""
@@ -393,7 +393,7 @@ proc accept*(server: AsyncSocket, client: var AsyncSocket) =
 proc acceptAddr*(server: AsyncSocket): tuple[sock: AsyncSocket,
                                               address: string] {.deprecated.} =
   ## Equivalent to ``sockets.acceptAddr``.
-  ## 
+  ##
   ## **Deprecated since version 0.9.0:** Please use the function above.
   var client = newAsyncSocket()
   var address: string = ""
@@ -441,17 +441,17 @@ proc isConnected*(s: AsyncSocket): bool =
   ## Determines whether ``s`` is connected.
   return s.info == SockConnected
 proc isListening*(s: AsyncSocket): bool =
-  ## Determines whether ``s`` is listening for incoming connections.  
+  ## Determines whether ``s`` is listening for incoming connections.
   return s.info == SockListening
 proc isConnecting*(s: AsyncSocket): bool =
-  ## Determines whether ``s`` is connecting.  
+  ## Determines whether ``s`` is connecting.
   return s.info == SockConnecting
 proc isClosed*(s: AsyncSocket): bool =
   ## Determines whether ``s`` has been closed.
   return s.info == SockClosed
 proc isSendDataBuffered*(s: AsyncSocket): bool =
   ## Determines whether ``s`` has data waiting to be sent, i.e. whether this
-  ## socket's sendBuffer contains data. 
+  ## socket's sendBuffer contains data.
   return s.sendBuffer.len != 0
 
 proc setHandleWrite*(s: AsyncSocket,
@@ -550,7 +550,7 @@ proc send*(sock: AsyncSocket, data: string) =
     sock.sendBuffer.add(data)
     sock.deleg.mode = fmReadWrite
   elif bytesSent != data.len:
-    sock.sendBuffer.add(data[bytesSent .. -1])
+    sock.sendBuffer.add(data[bytesSent .. ^1])
     sock.deleg.mode = fmReadWrite
 
 proc timeValFromMilliseconds(timeout = 500): Timeval =
@@ -561,10 +561,10 @@ proc timeValFromMilliseconds(timeout = 500): Timeval =
 
 proc createFdSet(fd: var TFdSet, s: seq[Delegate], m: var int) =
   FD_ZERO(fd)
-  for i in items(s): 
+  for i in items(s):
     m = max(m, int(i.fd))
     FD_SET(i.fd, fd)
-   
+
 proc pruneSocketSet(s: var seq[Delegate], fd: var TFdSet) =
   var i = 0
   var L = s.len
@@ -576,16 +576,16 @@ proc pruneSocketSet(s: var seq[Delegate], fd: var TFdSet) =
       inc(i)
   setLen(s, L)
 
-proc select(readfds, writefds, exceptfds: var seq[Delegate], 
+proc select(readfds, writefds, exceptfds: var seq[Delegate],
              timeout = 500): int =
   var tv {.noInit.}: Timeval = timeValFromMilliseconds(timeout)
-  
+
   var rd, wr, ex: TFdSet
   var m = 0
   createFdSet(rd, readfds, m)
   createFdSet(wr, writefds, m)
   createFdSet(ex, exceptfds, m)
-  
+
   if timeout != -1:
     result = int(select(cint(m+1), addr(rd), addr(wr), addr(ex), addr(tv)))
   else:
@@ -599,7 +599,7 @@ proc poll*(d: Dispatcher, timeout: int = 500): bool =
   ## This function checks for events on all the delegates in the `PDispatcher`.
   ## It then proceeds to call the correct event handler.
   ##
-  ## This function returns ``True`` if there are file descriptors that are still 
+  ## This function returns ``True`` if there are file descriptors that are still
   ## open, otherwise ``False``. File descriptors that have been
   ## closed are immediately removed from the dispatcher automatically.
   ##
@@ -611,7 +611,7 @@ proc poll*(d: Dispatcher, timeout: int = 500): bool =
   var readDg, writeDg, errorDg: seq[Delegate] = @[]
   var len = d.delegates.len
   var dc = 0
-  
+
   while dc < len:
     let deleg = d.delegates[dc]
     if (deleg.mode != fmWrite or deleg.mode != fmAppend) and deleg.open:
@@ -625,20 +625,20 @@ proc poll*(d: Dispatcher, timeout: int = 500): bool =
       # File/socket has been closed. Remove it from dispatcher.
       d.delegates[dc] = d.delegates[len-1]
       dec len
-      
+
   d.delegates.setLen(len)
-  
+
   var hasDataBufferedCount = 0
   for d in d.delegates:
     if d.hasDataBuffered(d.deleVal):
       hasDataBufferedCount.inc()
       d.handleRead(d.deleVal)
   if hasDataBufferedCount > 0: return true
-  
+
   if readDg.len() == 0 and writeDg.len() == 0:
     ## TODO: Perhaps this shouldn't return if errorDg has something?
     return false
-  
+
   if select(readDg, writeDg, errorDg, timeout) != 0:
     for i in 0..len(d.delegates)-1:
       if i > len(d.delegates)-1: break # One delegate might've been removed.
@@ -651,7 +651,7 @@ proc poll*(d: Dispatcher, timeout: int = 500): bool =
         deleg.handleWrite(deleg.deleVal)
       if deleg notin errorDg:
         deleg.handleError(deleg.deleVal)
-  
+
   # Execute tasks
   for i in items(d.delegates):
     i.task(i.deleVal)
@@ -664,7 +664,7 @@ when isMainModule:
 
   proc testConnect(s: AsyncSocket, no: int) =
     echo("Connected! " & $no)
-  
+
   proc testRead(s: AsyncSocket, no: int) =
     echo("Reading! " & $no)
     var data = ""
@@ -682,31 +682,31 @@ when isMainModule:
     var address = ""
     s.acceptAddr(client, address)
     echo("Accepted ", address)
-    client.handleRead = 
+    client.handleRead =
       proc (s: AsyncSocket) =
         testRead(s, 2)
     disp.register(client)
 
   proc main =
     var d = newDispatcher()
-    
+
     var s = asyncSocket()
     s.connect("amber.tenthbit.net", Port(6667))
-    s.handleConnect = 
+    s.handleConnect =
       proc (s: AsyncSocket) =
         testConnect(s, 1)
-    s.handleRead = 
+    s.handleRead =
       proc (s: AsyncSocket) =
         testRead(s, 1)
     d.register(s)
-    
+
     var server = asyncSocket()
     server.handleAccept =
-      proc (s: AsyncSocket) = 
+      proc (s: AsyncSocket) =
         testAccept(s, d, 78)
     server.bindAddr(Port(5555))
     server.listen()
     d.register(server)
-    
+
     while d.poll(-1): discard
   main()
diff --git a/lib/pure/collections/intsets.nim b/lib/pure/collections/intsets.nim
index 7520e6e46..ae26c5af6 100644
--- a/lib/pure/collections/intsets.nim
+++ b/lib/pure/collections/intsets.nim
@@ -14,12 +14,12 @@
 ## copy; use ``assign`` to get a deep copy.
 
 import
-  os, hashes, math
+  hashes, math
 
 type
   BitScalar = int
 
-const 
+const
   InitIntSetSize = 8         # must be a power of two!
   TrunkShift = 9
   BitsPerTrunk = 1 shl TrunkShift # needs to be a power of 2 and
@@ -31,11 +31,11 @@ const
 
 type
   PTrunk = ref TTrunk
-  TTrunk {.final.} = object 
+  TTrunk {.final.} = object
     next: PTrunk             # all nodes are connected with this pointer
     key: int                 # start address at bit 0
     bits: array[0..IntsPerTrunk - 1, BitScalar] # a bit vector
-  
+
   TTrunkSeq = seq[PTrunk]
   IntSet* = object ## an efficient set of 'int' implemented as a sparse bit set
     counter, max: int
@@ -44,42 +44,42 @@ type
 
 {.deprecated: [TIntSet: IntSet].}
 
-proc mustRehash(length, counter: int): bool {.inline.} = 
+proc mustRehash(length, counter: int): bool {.inline.} =
   assert(length > counter)
   result = (length * 2 < counter * 3) or (length - counter < 4)
 
-proc nextTry(h, maxHash: THash): THash {.inline.} = 
-  result = ((5 * h) + 1) and maxHash 
+proc nextTry(h, maxHash: THash): THash {.inline.} =
+  result = ((5 * h) + 1) and maxHash
 
-proc intSetGet(t: IntSet, key: int): PTrunk = 
+proc intSetGet(t: IntSet, key: int): PTrunk =
   var h = key and t.max
-  while t.data[h] != nil: 
-    if t.data[h].key == key: 
+  while t.data[h] != nil:
+    if t.data[h].key == key:
       return t.data[h]
     h = nextTry(h, t.max)
   result = nil
 
-proc intSetRawInsert(t: IntSet, data: var TTrunkSeq, desc: PTrunk) = 
+proc intSetRawInsert(t: IntSet, data: var TTrunkSeq, desc: PTrunk) =
   var h = desc.key and t.max
-  while data[h] != nil: 
+  while data[h] != nil:
     assert(data[h] != desc)
     h = nextTry(h, t.max)
   assert(data[h] == nil)
   data[h] = desc
 
-proc intSetEnlarge(t: var IntSet) = 
+proc intSetEnlarge(t: var IntSet) =
   var n: TTrunkSeq
   var oldMax = t.max
   t.max = ((t.max + 1) * 2) - 1
   newSeq(n, t.max + 1)
-  for i in countup(0, oldMax): 
+  for i in countup(0, oldMax):
     if t.data[i] != nil: intSetRawInsert(t, n, t.data[i])
   swap(t.data, n)
 
-proc intSetPut(t: var IntSet, key: int): PTrunk = 
+proc intSetPut(t: var IntSet, key: int): PTrunk =
   var h = key and t.max
-  while t.data[h] != nil: 
-    if t.data[h].key == key: 
+  while t.data[h] != nil:
+    if t.data[h].key == key:
       return t.data[h]
     h = nextTry(h, t.max)
   if mustRehash(t.max + 1, t.counter): intSetEnlarge(t)
@@ -94,43 +94,43 @@ proc intSetPut(t: var IntSet, key: int): PTrunk =
   t.data[h] = result
 
 proc contains*(s: IntSet, key: int): bool =
-  ## returns true iff `key` is in `s`.  
+  ## returns true iff `key` is in `s`.
   var t = intSetGet(s, `shr`(key, TrunkShift))
-  if t != nil: 
+  if t != nil:
     var u = key and TrunkMask
     result = (t.bits[`shr`(u, IntShift)] and `shl`(1, u and IntMask)) != 0
-  else: 
+  else:
     result = false
-  
-proc incl*(s: var IntSet, key: int) = 
+
+proc incl*(s: var IntSet, key: int) =
   ## includes an element `key` in `s`.
   var t = intSetPut(s, `shr`(key, TrunkShift))
   var u = key and TrunkMask
   t.bits[`shr`(u, IntShift)] = t.bits[`shr`(u, IntShift)] or
       `shl`(1, u and IntMask)
 
-proc excl*(s: var IntSet, key: int) = 
+proc excl*(s: var IntSet, key: int) =
   ## excludes `key` from the set `s`.
   var t = intSetGet(s, `shr`(key, TrunkShift))
-  if t != nil: 
+  if t != nil:
     var u = key and TrunkMask
     t.bits[`shr`(u, IntShift)] = t.bits[`shr`(u, IntShift)] and
         not `shl`(1, u and IntMask)
 
-proc containsOrIncl*(s: var IntSet, key: int): bool = 
+proc containsOrIncl*(s: var IntSet, key: int): bool =
   ## returns true if `s` contains `key`, otherwise `key` is included in `s`
   ## and false is returned.
   var t = intSetGet(s, `shr`(key, TrunkShift))
-  if t != nil: 
+  if t != nil:
     var u = key and TrunkMask
     result = (t.bits[`shr`(u, IntShift)] and `shl`(1, u and IntMask)) != 0
-    if not result: 
+    if not result:
       t.bits[`shr`(u, IntShift)] = t.bits[`shr`(u, IntShift)] or
           `shl`(1, u and IntMask)
-  else: 
+  else:
     incl(s, key)
     result = false
-    
+
 proc initIntSet*: IntSet =
   ## creates a new int set that is empty.
   newSeq(result.data, InitIntSetSize)
@@ -140,14 +140,14 @@ proc initIntSet*: IntSet =
 
 proc assign*(dest: var IntSet, src: IntSet) =
   ## copies `src` to `dest`. `dest` does not need to be initialized by
-  ## `initIntSet`. 
+  ## `initIntSet`.
   dest.counter = src.counter
   dest.max = src.max
   newSeq(dest.data, src.data.len)
-  
+
   var it = src.head
   while it != nil:
-    
+
     var h = it.key and dest.max
     while dest.data[h] != nil: h = nextTry(h, dest.max)
     assert(dest.data[h] == nil)
@@ -168,7 +168,7 @@ iterator items*(s: IntSet): int {.inline.} =
   while r != nil:
     var i = 0
     while i <= high(r.bits):
-      var w = r.bits[i] 
+      var w = r.bits[i]
       # taking a copy of r.bits[i] here is correct, because
       # modifying operations are not allowed during traversation
       var j = 0
diff --git a/lib/pure/collections/sequtils.nim b/lib/pure/collections/sequtils.nim
index edb904cc6..3f37d1ef0 100644
--- a/lib/pure/collections/sequtils.nim
+++ b/lib/pure/collections/sequtils.nim
@@ -81,7 +81,7 @@ proc deduplicate*[T](seq1: seq[T]): seq[T] =
     if not result.contains(itm): result.add(itm)
 
 {.deprecated: [distnct: deduplicate].}
-    
+
 proc zip*[S, T](seq1: seq[S], seq2: seq[T]): seq[tuple[a: S, b: T]] =
   ## Returns a new sequence with a combination of the two input sequences.
   ##
@@ -181,7 +181,7 @@ iterator filter*[T](seq1: seq[T], pred: proc(item: T): bool {.closure.}): T =
   ##   for n in filter(numbers, proc (x: int): bool = x mod 2 == 0):
   ##     echo($n)
   ##   # echoes 4, 8, 4 in separate lines
-  for i in countup(0, len(seq1) -1):
+  for i in countup(0, len(seq1)-1):
     var item = seq1[i]
     if pred(item): yield seq1[i]
 
@@ -228,7 +228,7 @@ proc delete*[T](s: var seq[T], first=0, last=0) =
   ##   var dest = @[1,1,1,2,2,2,2,2,2,1,1,1,1,1]
   ##   dest.delete(3, 8)
   ##   assert outcome == dest
-  
+
   var i = first
   var j = last+1
   var newLen = len(s)-j+i
@@ -246,12 +246,12 @@ proc insert*[T](dest: var seq[T], src: openArray[T], pos=0) =
   ##
   ##.. code-block::
   ##   var dest = @[1,1,1,1,1,1,1,1]
-  ##   let 
+  ##   let
   ##     src = @[2,2,2,2,2,2]
   ##     outcome = @[1,1,1,2,2,2,2,2,2,1,1,1,1,1]
   ##   dest.insert(src, 3)
   ##   assert dest == outcome
-  
+
   var j = len(dest) - 1
   var i = len(dest) + len(src) - 1
   dest.setLen(i + 1)
@@ -553,12 +553,12 @@ when isMainModule:
     var dest = @[1,1,1,2,2,2,2,2,2,1,1,1,1,1]
     dest.delete(3, 8)
     assert outcome == dest, """\
-    Deleting range 3-9 from [1,1,1,2,2,2,2,2,2,1,1,1,1,1] 
+    Deleting range 3-9 from [1,1,1,2,2,2,2,2,2,1,1,1,1,1]
     is [1,1,1,1,1,1,1,1]"""
 
   block: # insert tests
     var dest = @[1,1,1,1,1,1,1,1]
-    let 
+    let
       src = @[2,2,2,2,2,2]
       outcome = @[1,1,1,2,2,2,2,2,2,1,1,1,1,1]
     dest.insert(src, 3)
@@ -610,7 +610,7 @@ when isMainModule:
     let
       a = @[1, 2, 3]
       b: seq[int] = @[]
-    
+
     doAssert a.repeat(3) == @[1, 2, 3, 1, 2, 3, 1, 2, 3]
     doAssert a.repeat(0) == @[]
     #doAssert a.repeat(-1) == @[] # will not compile!
diff --git a/lib/pure/collections/sets.nim b/lib/pure/collections/sets.nim
index 4a20d00a4..bd6c2dc20 100644
--- a/lib/pure/collections/sets.nim
+++ b/lib/pure/collections/sets.nim
@@ -114,7 +114,7 @@ proc mustRehash(length, counter: int): bool {.inline.} =
   assert(length > counter)
   result = (length * 2 < counter * 3) or (length - counter < 4)
 
-proc rightSize*(count: int): int {.inline.} =
+proc rightSize*(count: Natural): int {.inline.} =
   ## Return the value of `initialSize` to support `count` items.
   ##
   ## If more items are expected to be added, simply add that
@@ -798,177 +798,178 @@ proc `==`*[A](s, t: OrderedSet[A]): bool =
     g = nxg
   result = compared == s.counter
 
-proc testModule() =
-  ## Internal micro test to validate docstrings and such.
-  block isValidTest:
-    var options: HashSet[string]
-    proc savePreferences(options: HashSet[string]) =
-      assert options.isValid, "Pass an initialized set!"
-    options = initSet[string]()
-    options.savePreferences
-
-  block lenTest:
-    var values: HashSet[int]
-    assert(not values.isValid)
-    assert values.len == 0
-    assert values.card == 0
-
-  block setIterator:
-    type pair = tuple[a, b: int]
-    var a, b = initSet[pair]()
-    a.incl((2, 3))
-    a.incl((3, 2))
-    a.incl((2, 3))
-    for x, y in a.items:
-      b.incl((x - 2, y + 1))
-    assert a.len == b.card
-    assert a.len == 2
-    #echo b
-
-  block setContains:
-    var values = initSet[int]()
-    assert(not values.contains(2))
-    values.incl(2)
-    assert values.contains(2)
-    values.excl(2)
-    assert(not values.contains(2))
-
-    values.incl(4)
-    var others = toSet([6, 7])
-    values.incl(others)
-    assert values.len == 3
-
-    values.init
-    assert values.containsOrIncl(2) == false
-    assert values.containsOrIncl(2) == true
-    var
-      a = toSet([1, 2])
-      b = toSet([1])
-    b.incl(2)
-    assert a == b
-
-  block exclusions:
-    var s = toSet([2, 3, 6, 7])
-    s.excl(2)
-    s.excl(2)
-    assert s.len == 3
-
-    var
-      numbers = toSet([1, 2, 3, 4, 5])
-      even = toSet([2, 4, 6, 8])
-    numbers.excl(even)
-    #echo numbers
-    # --> {1, 3, 5}
-
-  block toSeqAndString:
-    var a = toSet([2, 4, 5])
-    var b = initSet[int]()
-    for x in [2, 4, 5]: b.incl(x)
-    assert($a == $b)
-    #echo a
-    #echo toSet(["no", "esc'aping", "is \" provided"])
-
-  #block orderedToSeqAndString:
-  #  echo toOrderedSet([2, 4, 5])
-  #  echo toOrderedSet(["no", "esc'aping", "is \" provided"])
-
-  block setOperations:
-    var
-      a = toSet(["a", "b"])
-      b = toSet(["b", "c"])
-      c = union(a, b)
-    assert c == toSet(["a", "b", "c"])
-    var d = intersection(a, b)
-    assert d == toSet(["b"])
-    var e = difference(a, b)
-    assert e == toSet(["a"])
-    var f = symmetricDifference(a, b)
-    assert f == toSet(["a", "c"])
-    assert d < a and d < b
-    assert((a < a) == false)
-    assert d <= a and d <= b
-    assert((a <= a))
-    # Alias test.
-    assert a + b == toSet(["a", "b", "c"])
-    assert a * b == toSet(["b"])
-    assert a - b == toSet(["a"])
-    assert a -+- b == toSet(["a", "c"])
-    assert disjoint(a, b) == false
-    assert disjoint(a, b - a) == true
-
-  block mapSet:
-    var a = toSet([1, 2, 3])
-    var b = a.map(proc (x: int): string = $x)
-    assert b == toSet(["1", "2", "3"])
-
-  block isValidTest:
-    var cards: OrderedSet[string]
-    proc saveTarotCards(cards: OrderedSet[string]) =
-      assert cards.isValid, "Pass an initialized set!"
-    cards = initOrderedSet[string]()
-    cards.saveTarotCards
-
-  block lenTest:
-    var values: OrderedSet[int]
-    assert(not values.isValid)
-    assert values.len == 0
-    assert values.card == 0
-
-  block setIterator:
-    type pair = tuple[a, b: int]
-    var a, b = initOrderedSet[pair]()
-    a.incl((2, 3))
-    a.incl((3, 2))
-    a.incl((2, 3))
-    for x, y in a.items:
-      b.incl((x - 2, y + 1))
-    assert a.len == b.card
-    assert a.len == 2
-
-  #block orderedSetIterator:
-  #  var a = initOrderedSet[int]()
-  #  for value in [9, 2, 1, 5, 1, 8, 4, 2]:
-  #    a.incl(value)
-  #  for value in a.items:
-  #    echo "Got ", value
-
-  block setContains:
-    var values = initOrderedSet[int]()
-    assert(not values.contains(2))
-    values.incl(2)
-    assert values.contains(2)
-
-  block toSeqAndString:
-    var a = toOrderedSet([2, 4, 5])
-    var b = initOrderedSet[int]()
-    for x in [2, 4, 5]: b.incl(x)
-    assert($a == $b)
-    assert(a == b) # https://github.com/Araq/Nimrod/issues/1413
-
-  block initBlocks:
-    var a: OrderedSet[int]
-    a.init(4)
-    a.incl(2)
-    a.init
-    assert a.len == 0 and a.isValid
-    a = initOrderedSet[int](4)
-    a.incl(2)
-    assert a.len == 1
-
-    var b: HashSet[int]
-    b.init(4)
-    b.incl(2)
-    b.init
-    assert b.len == 0 and b.isValid
-    b = initSet[int](4)
-    b.incl(2)
-    assert b.len == 1
-
-  for i in 0 .. 32:
-    var s = rightSize(i)
-    if s <= i or mustRehash(s, i):
-      echo "performance issue: rightSize() will not elide enlarge() at ", i
-
-  echo "Micro tests run successfully."
-
-when isMainModule and not defined(release): testModule()
+when isMainModule and not defined(release):
+  proc testModule() =
+    ## Internal micro test to validate docstrings and such.
+    block isValidTest:
+      var options: HashSet[string]
+      proc savePreferences(options: HashSet[string]) =
+        assert options.isValid, "Pass an initialized set!"
+      options = initSet[string]()
+      options.savePreferences
+
+    block lenTest:
+      var values: HashSet[int]
+      assert(not values.isValid)
+      assert values.len == 0
+      assert values.card == 0
+
+    block setIterator:
+      type pair = tuple[a, b: int]
+      var a, b = initSet[pair]()
+      a.incl((2, 3))
+      a.incl((3, 2))
+      a.incl((2, 3))
+      for x, y in a.items:
+        b.incl((x - 2, y + 1))
+      assert a.len == b.card
+      assert a.len == 2
+      #echo b
+
+    block setContains:
+      var values = initSet[int]()
+      assert(not values.contains(2))
+      values.incl(2)
+      assert values.contains(2)
+      values.excl(2)
+      assert(not values.contains(2))
+
+      values.incl(4)
+      var others = toSet([6, 7])
+      values.incl(others)
+      assert values.len == 3
+
+      values.init
+      assert values.containsOrIncl(2) == false
+      assert values.containsOrIncl(2) == true
+      var
+        a = toSet([1, 2])
+        b = toSet([1])
+      b.incl(2)
+      assert a == b
+
+    block exclusions:
+      var s = toSet([2, 3, 6, 7])
+      s.excl(2)
+      s.excl(2)
+      assert s.len == 3
+
+      var
+        numbers = toSet([1, 2, 3, 4, 5])
+        even = toSet([2, 4, 6, 8])
+      numbers.excl(even)
+      #echo numbers
+      # --> {1, 3, 5}
+
+    block toSeqAndString:
+      var a = toSet([2, 4, 5])
+      var b = initSet[int]()
+      for x in [2, 4, 5]: b.incl(x)
+      assert($a == $b)
+      #echo a
+      #echo toSet(["no", "esc'aping", "is \" provided"])
+
+    #block orderedToSeqAndString:
+    #  echo toOrderedSet([2, 4, 5])
+    #  echo toOrderedSet(["no", "esc'aping", "is \" provided"])
+
+    block setOperations:
+      var
+        a = toSet(["a", "b"])
+        b = toSet(["b", "c"])
+        c = union(a, b)
+      assert c == toSet(["a", "b", "c"])
+      var d = intersection(a, b)
+      assert d == toSet(["b"])
+      var e = difference(a, b)
+      assert e == toSet(["a"])
+      var f = symmetricDifference(a, b)
+      assert f == toSet(["a", "c"])
+      assert d < a and d < b
+      assert((a < a) == false)
+      assert d <= a and d <= b
+      assert((a <= a))
+      # Alias test.
+      assert a + b == toSet(["a", "b", "c"])
+      assert a * b == toSet(["b"])
+      assert a - b == toSet(["a"])
+      assert a -+- b == toSet(["a", "c"])
+      assert disjoint(a, b) == false
+      assert disjoint(a, b - a) == true
+
+    block mapSet:
+      var a = toSet([1, 2, 3])
+      var b = a.map(proc (x: int): string = $x)
+      assert b == toSet(["1", "2", "3"])
+
+    block isValidTest:
+      var cards: OrderedSet[string]
+      proc saveTarotCards(cards: OrderedSet[string]) =
+        assert cards.isValid, "Pass an initialized set!"
+      cards = initOrderedSet[string]()
+      cards.saveTarotCards
+
+    block lenTest:
+      var values: OrderedSet[int]
+      assert(not values.isValid)
+      assert values.len == 0
+      assert values.card == 0
+
+    block setIterator:
+      type pair = tuple[a, b: int]
+      var a, b = initOrderedSet[pair]()
+      a.incl((2, 3))
+      a.incl((3, 2))
+      a.incl((2, 3))
+      for x, y in a.items:
+        b.incl((x - 2, y + 1))
+      assert a.len == b.card
+      assert a.len == 2
+
+    #block orderedSetIterator:
+    #  var a = initOrderedSet[int]()
+    #  for value in [9, 2, 1, 5, 1, 8, 4, 2]:
+    #    a.incl(value)
+    #  for value in a.items:
+    #    echo "Got ", value
+
+    block setContains:
+      var values = initOrderedSet[int]()
+      assert(not values.contains(2))
+      values.incl(2)
+      assert values.contains(2)
+
+    block toSeqAndString:
+      var a = toOrderedSet([2, 4, 5])
+      var b = initOrderedSet[int]()
+      for x in [2, 4, 5]: b.incl(x)
+      assert($a == $b)
+      assert(a == b) # https://github.com/Araq/Nimrod/issues/1413
+
+    block initBlocks:
+      var a: OrderedSet[int]
+      a.init(4)
+      a.incl(2)
+      a.init
+      assert a.len == 0 and a.isValid
+      a = initOrderedSet[int](4)
+      a.incl(2)
+      assert a.len == 1
+
+      var b: HashSet[int]
+      b.init(4)
+      b.incl(2)
+      b.init
+      assert b.len == 0 and b.isValid
+      b = initSet[int](4)
+      b.incl(2)
+      assert b.len == 1
+
+    for i in 0 .. 32:
+      var s = rightSize(i)
+      if s <= i or mustRehash(s, i):
+        echo "performance issue: rightSize() will not elide enlarge() at ", i
+
+    echo "Micro tests run successfully."
+
+  testModule()
diff --git a/lib/pure/collections/tables.nim b/lib/pure/collections/tables.nim
index 93a7591ac..5c4ac0401 100644
--- a/lib/pure/collections/tables.nim
+++ b/lib/pure/collections/tables.nim
@@ -95,12 +95,12 @@ proc len*[A, B](t: Table[A, B]): int =
   ## returns the number of keys in `t`.
   result = t.counter
 
-iterator pairs*[A, B](t: Table[A, B]): tuple[key: A, val: B] =
+iterator pairs*[A, B](t: Table[A, B]): (A, B) =
   ## iterates over any (key, value) pair in the table `t`.
   for h in 0..high(t.data):
     if isFilled(t.data[h].hcode): yield (t.data[h].key, t.data[h].val)
 
-iterator mpairs*[A, B](t: var Table[A, B]): tuple[key: A, val: var B] =
+iterator mpairs*[A, B](t: var Table[A, B]): (A, var B) =
   ## iterates over any (key, value) pair in the table `t`. The values
   ## can be modified.
   for h in 0..high(t.data):
@@ -128,7 +128,7 @@ proc mustRehash(length, counter: int): bool {.inline.} =
   assert(length > counter)
   result = (length * 2 < counter * 3) or (length - counter < 4)
 
-proc rightSize*(count: int): int {.inline.} =
+proc rightSize*(count: Natural): int {.inline.} =
   ## Return the value of `initialSize` to support `count` items.
   ##
   ## If more items are expected to be added, simply add that
@@ -192,7 +192,7 @@ proc `[]`*[A, B](t: Table[A, B], key: A): B =
 
 proc mget*[A, B](t: var Table[A, B], key: A): var B =
   ## retrieves the value at ``t[key]``. The value can be modified.
-  ## If `key` is not in `t`, the ``EInvalidKey`` exception is raised.
+  ## If `key` is not in `t`, the ``KeyError`` exception is raised.
   var hc: THash
   var index = rawGet(t, key, hc)
   if index >= 0: result = t.data[index].val
@@ -314,8 +314,8 @@ proc initTable*[A, B](initialSize=64): Table[A, B] =
   result.counter = 0
   newSeq(result.data, initialSize)
 
-proc toTable*[A, B](pairs: openArray[tuple[key: A, 
-                    val: B]]): Table[A, B] =
+proc toTable*[A, B](pairs: openArray[(A,
+                    B)]): Table[A, B] =
   ## creates a new hash table that contains the given `pairs`.
   result = initTable[A, B](rightSize(pairs.len))
   for key, val in items(pairs): result[key] = val
@@ -360,12 +360,12 @@ proc len*[A, B](t: TableRef[A, B]): int =
   ## returns the number of keys in `t`.
   result = t.counter
 
-iterator pairs*[A, B](t: TableRef[A, B]): tuple[key: A, val: B] =
+iterator pairs*[A, B](t: TableRef[A, B]): (A, B) =
   ## iterates over any (key, value) pair in the table `t`.
   for h in 0..high(t.data):
     if isFilled(t.data[h].hcode): yield (t.data[h].key, t.data[h].val)
 
-iterator mpairs*[A, B](t: TableRef[A, B]): tuple[key: A, val: var B] =
+iterator mpairs*[A, B](t: TableRef[A, B]): (A, var B) =
   ## iterates over any (key, value) pair in the table `t`. The values
   ## can be modified.
   for h in 0..high(t.data):
@@ -427,7 +427,7 @@ proc newTable*[A, B](initialSize=64): TableRef[A, B] =
   new(result)
   result[] = initTable[A, B](initialSize)
 
-proc newTable*[A, B](pairs: openArray[tuple[key: A, val: B]]): TableRef[A, B] =
+proc newTable*[A, B](pairs: openArray[(A, B)]): TableRef[A, B] =
   ## creates a new hash table that contains the given `pairs`.
   new(result)
   result[] = toTable[A, B](pairs)
@@ -473,13 +473,13 @@ template forAllOrderedPairs(yieldStmt: stmt) {.dirty, immediate.} =
     if isFilled(t.data[h].hcode): yieldStmt
     h = nxt
 
-iterator pairs*[A, B](t: OrderedTable[A, B]): tuple[key: A, val: B] =
+iterator pairs*[A, B](t: OrderedTable[A, B]): (A, B) =
   ## iterates over any (key, value) pair in the table `t` in insertion
   ## order.
   forAllOrderedPairs:
     yield (t.data[h].key, t.data[h].val)
 
-iterator mpairs*[A, B](t: var OrderedTable[A, B]): tuple[key: A, val: var B] =
+iterator mpairs*[A, B](t: var OrderedTable[A, B]): (A, var B) =
   ## iterates over any (key, value) pair in the table `t` in insertion
   ## order. The values can be modified.
   forAllOrderedPairs:
@@ -532,7 +532,7 @@ proc hasKey*[A, B](t: OrderedTable[A, B], key: A): bool =
   var hc: THash
   result = rawGet(t, key, hc) >= 0
 
-proc rawInsert[A, B](t: var OrderedTable[A, B], 
+proc rawInsert[A, B](t: var OrderedTable[A, B],
                      data: var OrderedKeyValuePairSeq[A, B],
                      key: A, val: B, hc: THash, h: THash) =
   rawInsertImpl()
@@ -584,8 +584,8 @@ proc initOrderedTable*[A, B](initialSize=64): OrderedTable[A, B] =
   result.last = -1
   newSeq(result.data, initialSize)
 
-proc toOrderedTable*[A, B](pairs: openArray[tuple[key: A, 
-                           val: B]]): OrderedTable[A, B] =
+proc toOrderedTable*[A, B](pairs: openArray[(A,
+                           B)]): OrderedTable[A, B] =
   ## creates a new ordered hash table that contains the given `pairs`.
   result = initOrderedTable[A, B](rightSize(pairs.len))
   for key, val in items(pairs): result[key] = val
@@ -594,8 +594,8 @@ proc `$`*[A, B](t: OrderedTable[A, B]): string =
   ## The `$` operator for ordered hash tables.
   dollarImpl()
 
-proc sort*[A, B](t: var OrderedTable[A, B], 
-                 cmp: proc (x,y: tuple[key: A, val: B]): int) =
+proc sort*[A, B](t: var OrderedTable[A, B],
+                 cmp: proc (x,y: (A, B)): int) =
   ## sorts `t` according to `cmp`. This modifies the internal list
   ## that kept the insertion order, so insertion order is lost after this
   ## call but key lookup and insertions remain possible after `sort` (in
@@ -617,7 +617,7 @@ proc sort*[A, B](t: var OrderedTable[A, B],
       while i < insize:
         inc(psize)
         q = t.data[q].next
-        if q < 0: break 
+        if q < 0: break
         inc(i)
       qsize = insize
       while psize > 0 or (qsize > 0 and q >= 0):
@@ -625,7 +625,7 @@ proc sort*[A, B](t: var OrderedTable[A, B],
           e = q; q = t.data[q].next; dec(qsize)
         elif qsize == 0 or q < 0:
           e = p; p = t.data[p].next; dec(psize)
-        elif cmp((t.data[p].key, t.data[p].val), 
+        elif cmp((t.data[p].key, t.data[p].val),
                  (t.data[q].key, t.data[q].val)) <= 0:
           e = p; p = t.data[p].next; dec(psize)
         else:
@@ -651,13 +651,13 @@ template forAllOrderedPairs(yieldStmt: stmt) {.dirty, immediate.} =
     if isFilled(t.data[h].hcode): yieldStmt
     h = nxt
 
-iterator pairs*[A, B](t: OrderedTableRef[A, B]): tuple[key: A, val: B] =
+iterator pairs*[A, B](t: OrderedTableRef[A, B]): (A, B) =
   ## iterates over any (key, value) pair in the table `t` in insertion
   ## order.
   forAllOrderedPairs:
     yield (t.data[h].key, t.data[h].val)
 
-iterator mpairs*[A, B](t: OrderedTableRef[A, B]): tuple[key: A, val: var B] =
+iterator mpairs*[A, B](t: OrderedTableRef[A, B]): (A, var B) =
   ## iterates over any (key, value) pair in the table `t` in insertion
   ## order. The values can be modified.
   forAllOrderedPairs:
@@ -721,8 +721,7 @@ proc newOrderedTable*[A, B](initialSize=64): OrderedTableRef[A, B] =
   new(result)
   result[] = initOrderedTable[A, B]()
 
-proc newOrderedTable*[A, B](pairs: openArray[tuple[key: A, 
-                           val: B]]): OrderedTableRef[A, B] =
+proc newOrderedTable*[A, B](pairs: openArray[(A, B)]): OrderedTableRef[A, B] =
   ## creates a new ordered hash table that contains the given `pairs`.
   result = newOrderedTable[A, B](rightSize(pairs.len))
   for key, val in items(pairs): result[key] = val
@@ -731,8 +730,8 @@ proc `$`*[A, B](t: OrderedTableRef[A, B]): string =
   ## The `$` operator for ordered hash tables.
   dollarImpl()
 
-proc sort*[A, B](t: OrderedTableRef[A, B], 
-                 cmp: proc (x,y: tuple[key: A, val: B]): int) =
+proc sort*[A, B](t: OrderedTableRef[A, B],
+                 cmp: proc (x,y: (A, B)): int) =
   ## sorts `t` according to `cmp`. This modifies the internal list
   ## that kept the insertion order, so insertion order is lost after this
   ## call but key lookup and insertions remain possible after `sort` (in
@@ -754,12 +753,12 @@ proc len*[A](t: CountTable[A]): int =
   ## returns the number of keys in `t`.
   result = t.counter
 
-iterator pairs*[A](t: CountTable[A]): tuple[key: A, val: int] =
+iterator pairs*[A](t: CountTable[A]): (A, int) =
   ## iterates over any (key, value) pair in the table `t`.
   for h in 0..high(t.data):
     if t.data[h].val != 0: yield (t.data[h].key, t.data[h].val)
 
-iterator mpairs*[A](t: var CountTable[A]): tuple[key: A, val: var int] =
+iterator mpairs*[A](t: var CountTable[A]): (A, var int) =
   ## iterates over any (key, value) pair in the table `t`. The values can
   ## be modified.
   for h in 0..high(t.data):
@@ -849,7 +848,7 @@ proc `$`*[A](t: CountTable[A]): string =
   ## The `$` operator for count tables.
   dollarImpl()
 
-proc inc*[A](t: var CountTable[A], key: A, val = 1) = 
+proc inc*[A](t: var CountTable[A], key: A, val = 1) =
   ## increments `t[key]` by `val`.
   var index = rawGet(t, key)
   if index >= 0:
@@ -902,12 +901,12 @@ proc len*[A](t: CountTableRef[A]): int =
   ## returns the number of keys in `t`.
   result = t.counter
 
-iterator pairs*[A](t: CountTableRef[A]): tuple[key: A, val: int] =
+iterator pairs*[A](t: CountTableRef[A]): (A, int) =
   ## iterates over any (key, value) pair in the table `t`.
   for h in 0..high(t.data):
     if t.data[h].val != 0: yield (t.data[h].key, t.data[h].val)
 
-iterator mpairs*[A](t: CountTableRef[A]): tuple[key: A, val: var int] =
+iterator mpairs*[A](t: CountTableRef[A]): (A, var int) =
   ## iterates over any (key, value) pair in the table `t`. The values can
   ## be modified.
   for h in 0..high(t.data):
@@ -966,15 +965,15 @@ proc `$`*[A](t: CountTableRef[A]): string =
   ## The `$` operator for count tables.
   dollarImpl()
 
-proc inc*[A](t: CountTableRef[A], key: A, val = 1) = 
+proc inc*[A](t: CountTableRef[A], key: A, val = 1) =
   ## increments `t[key]` by `val`.
   t[].inc(key, val)
 
-proc smallest*[A](t: CountTableRef[A]): tuple[key: A, val: int] =
+proc smallest*[A](t: CountTableRef[A]): (A, int) =
   ## returns the largest (key,val)-pair. Efficiency: O(n)
   t[].smallest
 
-proc largest*[A](t: CountTableRef[A]): tuple[key: A, val: int] =
+proc largest*[A](t: CountTableRef[A]): (A, int) =
   ## returns the (key,val)-pair with the largest `val`. Efficiency: O(n)
   t[].largest
 
diff --git a/lib/pure/concurrency/threadpool.nim b/lib/pure/concurrency/threadpool.nim
index a8ad30d04..9f1e53fb8 100644
--- a/lib/pure/concurrency/threadpool.nim
+++ b/lib/pure/concurrency/threadpool.nim
@@ -204,7 +204,7 @@ proc nimFlowVarSignal(fv: FlowVarBase) {.compilerProc.} =
     inc fv.ai.cv.counter
     release(fv.ai.cv.L)
     signal(fv.ai.cv.c)
-  if fv.usesSemaphore: 
+  if fv.usesSemaphore:
     signal(fv.cv)
 
 proc awaitAndThen*[T](fv: FlowVar[T]; action: proc (x: T) {.closure.}) =
diff --git a/lib/pure/fenv.nim b/lib/pure/fenv.nim
index 6f9085c92..f8f115ecc 100644
--- a/lib/pure/fenv.nim
+++ b/lib/pure/fenv.nim
@@ -101,3 +101,81 @@ proc feupdateenv*(envp: ptr Tfenv): cint {.importc, header: "<fenv.h>".}
   ## Save current exceptions in temporary storage, install environment
   ## represented by object pointed to by `envp` and raise exceptions
   ## according to saved exceptions.
+
+var FP_RADIX_INTERNAL {. importc: "FLT_RADIX" header: "<float.h>" .} : int
+
+template fpRadix* : int = FP_RADIX_INTERNAL
+  ## The (integer) value of the radix used to represent any floating
+  ## point type on the architecture used to build the program.
+
+var FLT_MANT_DIG {. importc: "FLT_MANT_DIG" header: "<float.h>" .} : int
+var FLT_DIG {. importc: "FLT_DIG" header: "<float.h>" .} : int
+var FLT_MIN_EXP {. importc: "FLT_MIN_EXP" header: "<float.h>" .} : int
+var FLT_MAX_EXP {. importc: "FLT_MAX_EXP" header: "<float.h>" .} : int
+var FLT_MIN_10_EXP {. importc: "FLT_MIN_10_EXP" header: "<float.h>" .} : int
+var FLT_MAX_10_EXP {. importc: "FLT_MAX_10_EXP" header: "<float.h>" .} : int
+var FLT_MIN {. importc: "FLT_MIN" header: "<float.h>" .} : cfloat
+var FLT_MAX {. importc: "FLT_MAX" header: "<float.h>" .} : cfloat
+var FLT_EPSILON {. importc: "FLT_EPSILON" header: "<float.h>" .} : cfloat
+
+var DBL_MANT_DIG {. importc: "DBL_MANT_DIG" header: "<float.h>" .} : int
+var DBL_DIG {. importc: "DBL_DIG" header: "<float.h>" .} : int
+var DBL_MIN_EXP {. importc: "DBL_MIN_EXP" header: "<float.h>" .} : int
+var DBL_MAX_EXP {. importc: "DBL_MAX_EXP" header: "<float.h>" .} : int
+var DBL_MIN_10_EXP {. importc: "DBL_MIN_10_EXP" header: "<float.h>" .} : int
+var DBL_MAX_10_EXP {. importc: "DBL_MAX_10_EXP" header: "<float.h>" .} : int
+var DBL_MIN {. importc: "DBL_MIN" header: "<float.h>" .} : cdouble
+var DBL_MAX {. importc: "DBL_MAX" header: "<float.h>" .} : cdouble
+var DBL_EPSILON {. importc: "DBL_EPSILON" header: "<float.h>" .} : cdouble
+
+template mantissaDigits*(T : typedesc[float32]) : int = FLT_MANT_DIG
+  ## Number of digits (in base ``floatingPointRadix``) in the mantissa
+  ## of 32-bit floating-point numbers.
+template digits*(T : typedesc[float32]) : int = FLT_DIG
+  ## Number of decimal digits that can be represented in a
+  ## 32-bit floating-point type without losing precision.
+template minExponent*(T : typedesc[float32]) : int = FLT_MIN_EXP
+  ## Minimum (negative) exponent for 32-bit floating-point numbers.
+template maxExponent*(T : typedesc[float32]) : int = FLT_MAX_EXP
+  ## Maximum (positive) exponent for 32-bit floating-point numbers.
+template min10Exponent*(T : typedesc[float32]) : int = FLT_MIN_10_EXP
+  ## Minimum (negative) exponent in base 10 for 32-bit floating-point
+  ## numbers.
+template max10Exponent*(T : typedesc[float32]) : int = FLT_MAX_10_EXP
+  ## Maximum (positive) exponent in base 10 for 32-bit floating-point
+  ## numbers.
+template minimumPositiveValue*(T : typedesc[float32]) : float32 = FLT_MIN
+  ## The smallest positive (nonzero) number that can be represented in a
+  ## 32-bit floating-point type.
+template maximumPositiveValue*(T : typedesc[float32]) : float32 = FLT_MAX
+  ## The largest positive number that can be represented in a 32-bit
+  ## floating-point type.
+template epsilon*(T : typedesc[float32]): float32 = FLT_EPSILON
+  ## The difference between 1.0 and the smallest number greater than
+  ## 1.0 that can be represented in a 32-bit floating-point type.
+
+template mantissaDigits*(T : typedesc[float64]) : int = DBL_MANT_DIG
+  ## Number of digits (in base ``floatingPointRadix``) in the mantissa
+  ## of 64-bit floating-point numbers.
+template digits*(T : typedesc[float64]) : int = DBL_DIG
+  ## Number of decimal digits that can be represented in a
+  ## 64-bit floating-point type without losing precision.
+template minExponent*(T : typedesc[float64]) : int = DBL_MIN_EXP
+  ## Minimum (negative) exponent for 64-bit floating-point numbers.
+template maxExponent*(T : typedesc[float64]) : int = DBL_MAX_EXP
+  ## Maximum (positive) exponent for 64-bit floating-point numbers.
+template min10Exponent*(T : typedesc[float64]) : int = DBL_MIN_10_EXP
+  ## Minimum (negative) exponent in base 10 for 64-bit floating-point
+  ## numbers.
+template max10Exponent*(T : typedesc[float64]) : int = DBL_MAX_10_EXP
+  ## Maximum (positive) exponent in base 10 for 64-bit floating-point
+  ## numbers.
+template minimumPositiveValue*(T : typedesc[float64]) : float64 = DBL_MIN
+  ## The smallest positive (nonzero) number that can be represented in a
+  ## 64-bit floating-point type.
+template maximumPositiveValue*(T : typedesc[float64]) : float64 = DBL_MAX
+  ## The largest positive number that can be represented in a 64-bit
+  ## floating-point type.
+template epsilon*(T : typedesc[float64]): float64 = DBL_EPSILON
+  ## The difference between 1.0 and the smallest number greater than
+  ## 1.0 that can be represented in a 64-bit floating-point type.
diff --git a/lib/pure/ftpclient.nim b/lib/pure/ftpclient.nim
index 46af1d528..dc387b79c 100644
--- a/lib/pure/ftpclient.nim
+++ b/lib/pure/ftpclient.nim
@@ -15,8 +15,8 @@ from rawsockets import nil
 from asyncdispatch import PFuture
 
 ## This module **partially** implements an FTP client as specified
-## by `RFC 959 <http://tools.ietf.org/html/rfc959>`_. 
-## 
+## by `RFC 959 <http://tools.ietf.org/html/rfc959>`_.
+##
 ## This module provides both a synchronous and asynchronous implementation.
 ## The asynchronous implementation requires you to use the ``asyncFTPClient``
 ## function. You are then required to register the ``AsyncFTPClient`` with a
@@ -27,7 +27,7 @@ from asyncdispatch import PFuture
 ## file transfers, calls to functions which use the command socket will block.
 ##
 ## Here is some example usage of this module:
-## 
+##
 ## .. code-block:: Nim
 ##    var ftp = ftpClient("example.org", user = "user", pass = "pass")
 ##    ftp.connect()
@@ -51,7 +51,7 @@ type
       port*: rawsockets.Port
     else:
       port*: Port
-    
+
     jobInProgress*: bool
     job*: FTPJob[SockType]
 
@@ -91,7 +91,7 @@ type
     of EvLines:
       lines*: string ## Lines that have been transferred.
     of EvRetr, EvStore: ## Retr/Store operation finished.
-      nil 
+      nil
     of EvTransferProgress:
       bytesTotal*: BiggestInt     ## Bytes total.
       bytesFinished*: BiggestInt  ## Bytes transferred.
@@ -213,7 +213,7 @@ proc handleConnect(s: AsyncSocket, ftp: AsyncFTPClient) =
 proc handleRead(s: AsyncSocket, ftp: AsyncFTPClient) =
   assert ftp.jobInProgress
   assert ftp.job.typ != JStore
-  # This can never return true, because it shouldn't check for code 
+  # This can never return true, because it shouldn't check for code
   # 226 from csock.
   assert(not ftp.job.prc(ftp, true))
 
@@ -236,13 +236,13 @@ proc pasv[T](ftp: FtpBase[T]) =
     ftp.disp.register(ftp.dsock)
   else:
     {.fatal: "Incorrect socket instantiation".}
-  
+
   var pasvMsg = ftp.send("PASV").string.strip.TaintedString
   assertReply(pasvMsg, "227")
   var betweenParens = captureBetween(pasvMsg.string, '(', ')')
   var nums = betweenParens.split(',')
-  var ip = nums[0.. -3]
-  var port = nums[-2.. -1]
+  var ip = nums[0.. ^3]
+  var port = nums[^2.. ^1]
   var properPort = port[0].parseInt()*256+port[1].parseInt()
   ftp.dsock.connect(ip.join("."), Port(properPort.toU16))
   when T is AsyncSocket:
@@ -307,7 +307,7 @@ proc getLines[T](ftp: FtpBase[T], async: bool = false): bool =
         ftp.job.lines.add(r.string & "\n")
     else:
       {.fatal: "Incorrect socket instantiation".}
-  
+
   if not async:
     var readSocks: seq[Socket] = @[ftp.csock]
     # This is only needed here. Asyncio gets this socket...
@@ -396,7 +396,7 @@ proc chmod*[T](ftp: FtpBase[T], path: string,
 proc list*[T](ftp: FtpBase[T], dir: string = "", async = false): string =
   ## Lists all files in ``dir``. If ``dir`` is ``""``, uses the current
   ## working directory. If ``async`` is true, this function will return
-  ## immediately and it will be your job to call asyncio's 
+  ## immediately and it will be your job to call asyncio's
   ## ``poll`` to progress this operation.
   ftp.createJob(getLines[T], JRetrText)
   ftp.pasv()
@@ -417,7 +417,7 @@ proc retrText*[T](ftp: FtpBase[T], file: string, async = false): string =
   ftp.createJob(getLines[T], JRetrText)
   ftp.pasv()
   assertReply ftp.send("RETR " & file.normalizePathSep), ["125", "150"]
-  
+
   if not async:
     while not ftp.job.prc(ftp, false): discard
     result = ftp.job.lines
@@ -436,7 +436,7 @@ proc getFile[T](ftp: FtpBase[T], async = false): bool =
       else:
         bytesRead = ftp.dsock.recvAsync(r, BufferSize)
         returned = bytesRead != -1
-    else: 
+    else:
       bytesRead = ftp.dsock.recv(r, BufferSize)
       returned = true
     let r2 = r.string
@@ -458,7 +458,7 @@ proc getFile[T](ftp: FtpBase[T], async = false): bool =
 proc retrFile*[T](ftp: FtpBase[T], file, dest: string, async = false) =
   ## Downloads ``file`` and saves it to ``dest``. Usage of this function
   ## asynchronously is recommended to view the progress of the download.
-  ## The ``EvRetr`` event is passed to the specified ``handleEvent`` function 
+  ## The ``EvRetr`` event is passed to the specified ``handleEvent`` function
   ## when the download is finished, and the ``filename`` field will be equal
   ## to ``file``.
   ftp.createJob(getFile[T], JRetr)
@@ -471,7 +471,7 @@ proc retrFile*[T](ftp: FtpBase[T], file, dest: string, async = false) =
   var fileSize: BiggestInt
   if reply.string.captureBetween('(', ')').parseBiggestInt(fileSize) == 0:
     raise newException(ReplyError, "Reply has no file size.")
-    
+
   ftp.job.total = fileSize
   ftp.job.lastProgressReport = epochTime()
   ftp.job.filename = file.normalizePathSep
@@ -488,7 +488,7 @@ proc doUpload[T](ftp: FtpBase[T], async = false): bool =
       if bytesSent == ftp.job.toStore.len:
         ftp.job.toStore = ""
       elif bytesSent != ftp.job.toStore.len and bytesSent != 0:
-        ftp.job.toStore = ftp.job.toStore[bytesSent .. -1]
+        ftp.job.toStore = ftp.job.toStore[bytesSent .. ^1]
       ftp.job.progress.inc(bytesSent)
       ftp.job.oneSecond.inc(bytesSent)
     else:
@@ -499,12 +499,12 @@ proc doUpload[T](ftp: FtpBase[T], async = false): bool =
         # File finished uploading.
         ftp.dsock.close()
         ftp.dsockConnected = false
-  
+
         if not async:
           assertReply ftp.expectReply(), "226"
           return true
         return false
-    
+
       if not async:
         ftp.dsock.send(s)
       else:
@@ -512,9 +512,9 @@ proc doUpload[T](ftp: FtpBase[T], async = false): bool =
         if bytesSent == 0:
           ftp.job.toStore.add(s)
         elif bytesSent != s.len:
-          ftp.job.toStore.add(s[bytesSent .. -1])
+          ftp.job.toStore.add(s[bytesSent .. ^1])
         len = bytesSent
-      
+
       ftp.job.progress.inc(len)
       ftp.job.oneSecond.inc(len)
 
@@ -522,8 +522,8 @@ proc store*[T](ftp: FtpBase[T], file, dest: string, async = false) =
   ## Uploads ``file`` to ``dest`` on the remote FTP server. Usage of this
   ## function asynchronously is recommended to view the progress of
   ## the download.
-  ## The ``EvStore`` event is passed to the specified ``handleEvent`` function 
-  ## when the upload is finished, and the ``filename`` field will be 
+  ## The ``EvStore`` event is passed to the specified ``handleEvent`` function
+  ## when the upload is finished, and the ``filename`` field will be
   ## equal to ``file``.
   ftp.createJob(doUpload[T], JStore)
   ftp.job.file = open(file)
@@ -531,7 +531,7 @@ proc store*[T](ftp: FtpBase[T], file, dest: string, async = false) =
   ftp.job.lastProgressReport = epochTime()
   ftp.job.filename = file
   ftp.pasv()
-  
+
   assertReply ftp.send("STOR " & dest.normalizePathSep), ["125", "150"]
 
   if not async:
@@ -564,12 +564,12 @@ proc csockHandleRead(s: AsyncSocket, ftp: AsyncFTPClient) =
       if ftp.job.progress != ftp.job.total:
         raise newException(FTPError, "Didn't upload full file.")
     ftp.deleteJob()
-    
+
     ftp.handleEvent(ftp, r)
 
 proc asyncFTPClient*(address: string, port = Port(21),
                      user, pass = "",
-    handleEvent: proc (ftp: AsyncFTPClient, ev: FTPEvent) {.closure,gcsafe.} = 
+    handleEvent: proc (ftp: AsyncFTPClient, ev: FTPEvent) {.closure,gcsafe.} =
       (proc (ftp: AsyncFTPClient, ev: FTPEvent) = discard)): AsyncFTPClient =
   ## Create a ``AsyncFTPClient`` object.
   ##
@@ -617,7 +617,7 @@ when isMainModule:
           echo d.len
         else: assert(false)
     var ftp = asyncFTPClient("example.com", user = "foo", pass = "bar", handleEvent = hev)
-    
+
     d.register(ftp)
     d.len.echo()
     ftp.connect()
diff --git a/lib/pure/future.nim b/lib/pure/future.nim
index 05f25d29f..661afd7b3 100644
--- a/lib/pure/future.nim
+++ b/lib/pure/future.nim
@@ -12,7 +12,7 @@
 
 import macros
 
-proc createProcType(p, b: PNimrodNode): PNimrodNode {.compileTime.} =
+proc createProcType(p, b: NimNode): NimNode {.compileTime.} =
   #echo treeRepr(p)
   #echo treeRepr(b)
   result = newNimNode(nnkProcTy)
@@ -44,7 +44,7 @@ proc createProcType(p, b: PNimrodNode): PNimrodNode {.compileTime.} =
     formalParams.add identDefs
   else:
     error("Incorrect type list in proc type declaration.")
-  
+
   result.add formalParams
   result.add newEmptyNode()
   #echo(treeRepr(result))
@@ -59,10 +59,10 @@ macro `=>`*(p, b: expr): expr {.immediate.} =
   ##     f(2, 2)
   ##
   ##   passTwoAndTwo((x, y) => x + y) # 4
-  
+
   #echo treeRepr(p)
   #echo(treeRepr(b))
-  var params: seq[PNimrodNode] = @[newIdentNode("auto")]
+  var params: seq[NimNode] = @[newIdentNode("auto")]
 
   case p.kind
   of nnkPar:
@@ -118,7 +118,7 @@ macro `->`*(p, b: expr): expr {.immediate.} =
   ##
   ##   proc pass2(f: (float, float) -> float): float =
   ##     f(2, 2)
-  ##   
+  ##
   ##   # is the same as:
   ##
   ##   proc pass2(f: proc (x, y: float): float): float =
diff --git a/lib/pure/htmlgen.nim b/lib/pure/htmlgen.nim
index aeb93bebe..d712e53f3 100644
--- a/lib/pure/htmlgen.nim
+++ b/lib/pure/htmlgen.nim
@@ -12,7 +12,7 @@
 ## as ``from htmlgen import nil`` and then fully qualify the macros.
 ##
 ##
-## This module implements a simple `XML`:idx: and `HTML`:idx: code 
+## This module implements a simple `XML`:idx: and `HTML`:idx: code
 ## generator. Each commonly used HTML tag has a corresponding macro
 ## that generates a string with its HTML representation.
 ##
@@ -21,9 +21,9 @@
 ## .. code-block:: Nim
 ##   var nim = "Nim"
 ##   echo h1(a(href="http://nim-lang.org", nim))
-##  
+##
 ## Writes the string::
-##   
+##
 ##   <h1><a href="http://nim-lang.org">Nim</a></h1>
 ##
 
@@ -36,16 +36,16 @@ const
     "onmouseover onmousemove onmouseout onkeypress onkeydown onkeyup "
   commonAttr* = coreAttr & eventAttr
 
-proc getIdent(e: PNimrodNode): string {.compileTime.} = 
+proc getIdent(e: NimNode): string {.compileTime.} =
   case e.kind
   of nnkIdent: result = normalize($e.ident)
-  of nnkAccQuoted: 
+  of nnkAccQuoted:
     result = getIdent(e[0])
     for i in 1 .. e.len-1:
       result.add getIdent(e[i])
   else: error("cannot extract identifier from node: " & toStrLit(e).strVal)
 
-proc delete[T](s: var seq[T], attr: T): bool = 
+proc delete[T](s: var seq[T], attr: T): bool =
   var idx = find(s, attr)
   if idx >= 0:
     var L = s.len
@@ -53,10 +53,10 @@ proc delete[T](s: var seq[T], attr: T): bool =
     setLen(s, L-1)
     result = true
 
-proc xmlCheckedTag*(e: PNimrodNode, tag: string, optAttr = "", reqAttr = "",
-    isLeaf = false): PNimrodNode {.compileTime.} =
+proc xmlCheckedTag*(e: NimNode, tag: string, optAttr = "", reqAttr = "",
+    isLeaf = false): NimNode {.compileTime.} =
   ## use this procedure to define a new XML tag
-  
+
   # copy the attributes; when iterating over them these lists
   # will be modified, so that each attribute is only given one value
   var req = split(reqAttr)
@@ -66,7 +66,7 @@ proc xmlCheckedTag*(e: PNimrodNode, tag: string, optAttr = "", reqAttr = "",
   result.add(newStrLitNode(tag))
   # first pass over attributes:
   for i in 1..e.len-1:
-    if e[i].kind == nnkExprEqExpr: 
+    if e[i].kind == nnkExprEqExpr:
       var name = getIdent(e[i][0])
       if delete(req, name) or delete(opt, name):
         result.add(newStrLitNode(" "))
@@ -81,7 +81,7 @@ proc xmlCheckedTag*(e: PNimrodNode, tag: string, optAttr = "", reqAttr = "",
     error(req[0] & " attribute for '" & tag & "' element expected")
   if isLeaf:
     for i in 1..e.len-1:
-      if e[i].kind != nnkExprEqExpr: 
+      if e[i].kind != nnkExprEqExpr:
         error("element " & tag & " cannot be nested")
     result.add(newStrLitNode(" />"))
   else:
@@ -95,389 +95,389 @@ proc xmlCheckedTag*(e: PNimrodNode, tag: string, optAttr = "", reqAttr = "",
   result = nestList(!"&", result)
 
 
-macro a*(e: expr): expr {.immediate.} = 
+macro a*(e: expr): expr {.immediate.} =
   ## generates the HTML ``a`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "a", "href charset type hreflang rel rev " &
     "accesskey tabindex" & commonAttr)
 
-macro acronym*(e: expr): expr {.immediate.} = 
+macro acronym*(e: expr): expr {.immediate.} =
   ## generates the HTML ``acronym`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "acronym", commonAttr)
 
-macro address*(e: expr): expr {.immediate.} = 
+macro address*(e: expr): expr {.immediate.} =
   ## generates the HTML ``address`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "address", commonAttr)
 
-macro area*(e: expr): expr {.immediate.} = 
+macro area*(e: expr): expr {.immediate.} =
   ## generates the HTML ``area`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "area", "shape coords href nohref" &
     " accesskey tabindex" & commonAttr, "alt", true)
 
-macro b*(e: expr): expr {.immediate.} = 
+macro b*(e: expr): expr {.immediate.} =
   ## generates the HTML ``b`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "b", commonAttr)
 
-macro base*(e: expr): expr {.immediate.} = 
+macro base*(e: expr): expr {.immediate.} =
   ## generates the HTML ``base`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "base", "", "href", true)
 
-macro big*(e: expr): expr {.immediate.} = 
+macro big*(e: expr): expr {.immediate.} =
   ## generates the HTML ``big`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "big", commonAttr)
 
-macro blockquote*(e: expr): expr {.immediate.} = 
+macro blockquote*(e: expr): expr {.immediate.} =
   ## generates the HTML ``blockquote`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "blockquote", " cite" & commonAttr)
 
-macro body*(e: expr): expr {.immediate.} = 
+macro body*(e: expr): expr {.immediate.} =
   ## generates the HTML ``body`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "body", commonAttr)
 
-macro br*(e: expr): expr {.immediate.} = 
+macro br*(e: expr): expr {.immediate.} =
   ## generates the HTML ``br`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "br", "", "", true)
 
-macro button*(e: expr): expr {.immediate.} = 
+macro button*(e: expr): expr {.immediate.} =
   ## generates the HTML ``button`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "button", "accesskey tabindex " &
     "disabled name type value" & commonAttr)
 
-macro caption*(e: expr): expr {.immediate.} = 
+macro caption*(e: expr): expr {.immediate.} =
   ## generates the HTML ``caption`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "caption", commonAttr)
 
-macro cite*(e: expr): expr {.immediate.} = 
+macro cite*(e: expr): expr {.immediate.} =
   ## generates the HTML ``cite`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "cite", commonAttr)
 
-macro code*(e: expr): expr {.immediate.} = 
+macro code*(e: expr): expr {.immediate.} =
   ## generates the HTML ``code`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "code", commonAttr)
 
-macro col*(e: expr): expr {.immediate.} = 
+macro col*(e: expr): expr {.immediate.} =
   ## generates the HTML ``col`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "col", "span align valign" & commonAttr, "", true)
 
-macro colgroup*(e: expr): expr {.immediate.} = 
+macro colgroup*(e: expr): expr {.immediate.} =
   ## generates the HTML ``colgroup`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "colgroup", "span align valign" & commonAttr)
 
-macro dd*(e: expr): expr {.immediate.} = 
+macro dd*(e: expr): expr {.immediate.} =
   ## generates the HTML ``dd`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "dd", commonAttr)
 
-macro del*(e: expr): expr {.immediate.} = 
+macro del*(e: expr): expr {.immediate.} =
   ## generates the HTML ``del`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "del", "cite datetime" & commonAttr)
 
-macro dfn*(e: expr): expr {.immediate.} = 
+macro dfn*(e: expr): expr {.immediate.} =
   ## generates the HTML ``dfn`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "dfn", commonAttr)
 
-macro `div`*(e: expr): expr {.immediate.} = 
+macro `div`*(e: expr): expr {.immediate.} =
   ## generates the HTML ``div`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "div", commonAttr)
 
-macro dl*(e: expr): expr {.immediate.} = 
+macro dl*(e: expr): expr {.immediate.} =
   ## generates the HTML ``dl`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "dl", commonAttr)
 
-macro dt*(e: expr): expr {.immediate.} = 
+macro dt*(e: expr): expr {.immediate.} =
   ## generates the HTML ``dt`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "dt", commonAttr)
 
-macro em*(e: expr): expr {.immediate.} = 
+macro em*(e: expr): expr {.immediate.} =
   ## generates the HTML ``em`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "em", commonAttr)
 
-macro fieldset*(e: expr): expr {.immediate.} = 
+macro fieldset*(e: expr): expr {.immediate.} =
   ## generates the HTML ``fieldset`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "fieldset", commonAttr)
 
-macro form*(e: expr): expr {.immediate.} = 
+macro form*(e: expr): expr {.immediate.} =
   ## generates the HTML ``form`` element.
   let e = callsite()
-  result = xmlCheckedTag(e, "form", "method encype accept accept-charset" & 
+  result = xmlCheckedTag(e, "form", "method encype accept accept-charset" &
     commonAttr, "action")
 
-macro h1*(e: expr): expr {.immediate.} = 
+macro h1*(e: expr): expr {.immediate.} =
   ## generates the HTML ``h1`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "h1", commonAttr)
 
-macro h2*(e: expr): expr {.immediate.} = 
+macro h2*(e: expr): expr {.immediate.} =
   ## generates the HTML ``h2`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "h2", commonAttr)
 
-macro h3*(e: expr): expr {.immediate.} = 
+macro h3*(e: expr): expr {.immediate.} =
   ## generates the HTML ``h3`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "h3", commonAttr)
 
-macro h4*(e: expr): expr {.immediate.} = 
+macro h4*(e: expr): expr {.immediate.} =
   ## generates the HTML ``h4`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "h4", commonAttr)
 
-macro h5*(e: expr): expr {.immediate.} = 
+macro h5*(e: expr): expr {.immediate.} =
   ## generates the HTML ``h5`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "h5", commonAttr)
 
-macro h6*(e: expr): expr {.immediate.} = 
+macro h6*(e: expr): expr {.immediate.} =
   ## generates the HTML ``h6`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "h6", commonAttr)
 
-macro head*(e: expr): expr {.immediate.} = 
+macro head*(e: expr): expr {.immediate.} =
   ## generates the HTML ``head`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "head", "profile")
 
-macro html*(e: expr): expr {.immediate.} = 
+macro html*(e: expr): expr {.immediate.} =
   ## generates the HTML ``html`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "html", "xmlns", "")
 
-macro hr*(): expr {.immediate.} = 
+macro hr*(): expr {.immediate.} =
   ## generates the HTML ``hr`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "hr", commonAttr, "", true)
 
-macro i*(e: expr): expr {.immediate.} = 
+macro i*(e: expr): expr {.immediate.} =
   ## generates the HTML ``i`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "i", commonAttr)
 
-macro img*(e: expr): expr {.immediate.} = 
+macro img*(e: expr): expr {.immediate.} =
   ## generates the HTML ``img`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "img", "longdesc height width", "src alt", true)
 
-macro input*(e: expr): expr {.immediate.} = 
+macro input*(e: expr): expr {.immediate.} =
   ## generates the HTML ``input`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "input", "name type value checked maxlength src" &
     " alt accept disabled readonly accesskey tabindex" & commonAttr, "", true)
 
-macro ins*(e: expr): expr {.immediate.} = 
+macro ins*(e: expr): expr {.immediate.} =
   ## generates the HTML ``ins`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "ins", "cite datetime" & commonAttr)
 
-macro kbd*(e: expr): expr {.immediate.} = 
+macro kbd*(e: expr): expr {.immediate.} =
   ## generates the HTML ``kbd`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "kbd", commonAttr)
 
-macro label*(e: expr): expr {.immediate.} = 
+macro label*(e: expr): expr {.immediate.} =
   ## generates the HTML ``label`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "label", "for accesskey" & commonAttr)
 
-macro legend*(e: expr): expr {.immediate.} = 
+macro legend*(e: expr): expr {.immediate.} =
   ## generates the HTML ``legend`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "legend", "accesskey" & commonAttr)
 
-macro li*(e: expr): expr {.immediate.} = 
+macro li*(e: expr): expr {.immediate.} =
   ## generates the HTML ``li`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "li", commonAttr)
 
-macro link*(e: expr): expr {.immediate.} = 
+macro link*(e: expr): expr {.immediate.} =
   ## generates the HTML ``link`` element.
   let e = callsite()
-  result = xmlCheckedTag(e, "link", "href charset hreflang type rel rev media" & 
+  result = xmlCheckedTag(e, "link", "href charset hreflang type rel rev media" &
     commonAttr, "", true)
 
-macro map*(e: expr): expr {.immediate.} = 
+macro map*(e: expr): expr {.immediate.} =
   ## generates the HTML ``map`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "map", "class title" & eventAttr, "id", false)
 
-macro meta*(e: expr): expr {.immediate.} = 
+macro meta*(e: expr): expr {.immediate.} =
   ## generates the HTML ``meta`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "meta", "name http-equiv scheme", "content", true)
 
-macro noscript*(e: expr): expr {.immediate.} = 
+macro noscript*(e: expr): expr {.immediate.} =
   ## generates the HTML ``noscript`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "noscript", commonAttr)
 
-macro `object`*(e: expr): expr {.immediate.} = 
+macro `object`*(e: expr): expr {.immediate.} =
   ## generates the HTML ``object`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "object", "classid data codebase declare type " &
     "codetype archive standby width height name tabindex" & commonAttr)
 
-macro ol*(e: expr): expr {.immediate.} = 
+macro ol*(e: expr): expr {.immediate.} =
   ## generates the HTML ``ol`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "ol", commonAttr)
 
-macro optgroup*(e: expr): expr {.immediate.} = 
+macro optgroup*(e: expr): expr {.immediate.} =
   ## generates the HTML ``optgroup`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "optgroup", "disabled" & commonAttr, "label", false)
 
-macro option*(e: expr): expr {.immediate.} = 
+macro option*(e: expr): expr {.immediate.} =
   ## generates the HTML ``option`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "option", "selected value" & commonAttr)
 
-macro p*(e: expr): expr {.immediate.} = 
+macro p*(e: expr): expr {.immediate.} =
   ## generates the HTML ``p`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "p", commonAttr)
 
-macro param*(e: expr): expr {.immediate.} = 
+macro param*(e: expr): expr {.immediate.} =
   ## generates the HTML ``param`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "param", "value id type valuetype", "name", true)
 
-macro pre*(e: expr): expr {.immediate.} = 
+macro pre*(e: expr): expr {.immediate.} =
   ## generates the HTML ``pre`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "pre", commonAttr)
 
-macro q*(e: expr): expr {.immediate.} = 
+macro q*(e: expr): expr {.immediate.} =
   ## generates the HTML ``q`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "q", "cite" & commonAttr)
 
-macro samp*(e: expr): expr {.immediate.} = 
+macro samp*(e: expr): expr {.immediate.} =
   ## generates the HTML ``samp`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "samp", commonAttr)
 
-macro script*(e: expr): expr {.immediate.} = 
+macro script*(e: expr): expr {.immediate.} =
   ## generates the HTML ``script`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "script", "src charset defer", "type", false)
 
-macro select*(e: expr): expr {.immediate.} = 
+macro select*(e: expr): expr {.immediate.} =
   ## generates the HTML ``select`` element.
   let e = callsite()
-  result = xmlCheckedTag(e, "select", "name size multiple disabled tabindex" & 
+  result = xmlCheckedTag(e, "select", "name size multiple disabled tabindex" &
     commonAttr)
 
-macro small*(e: expr): expr {.immediate.} = 
+macro small*(e: expr): expr {.immediate.} =
   ## generates the HTML ``small`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "small", commonAttr)
 
-macro span*(e: expr): expr {.immediate.} = 
+macro span*(e: expr): expr {.immediate.} =
   ## generates the HTML ``span`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "span", commonAttr)
 
-macro strong*(e: expr): expr {.immediate.} = 
+macro strong*(e: expr): expr {.immediate.} =
   ## generates the HTML ``strong`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "strong", commonAttr)
 
-macro style*(e: expr): expr {.immediate.} = 
+macro style*(e: expr): expr {.immediate.} =
   ## generates the HTML ``style`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "style", "media title", "type")
 
-macro sub*(e: expr): expr {.immediate.} = 
+macro sub*(e: expr): expr {.immediate.} =
   ## generates the HTML ``sub`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "sub", commonAttr)
 
-macro sup*(e: expr): expr {.immediate.} = 
+macro sup*(e: expr): expr {.immediate.} =
   ## generates the HTML ``sup`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "sup", commonAttr)
 
-macro table*(e: expr): expr {.immediate.} = 
+macro table*(e: expr): expr {.immediate.} =
   ## generates the HTML ``table`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "table", "summary border cellpadding cellspacing" &
     " frame rules width" & commonAttr)
 
-macro tbody*(e: expr): expr {.immediate.} = 
+macro tbody*(e: expr): expr {.immediate.} =
   ## generates the HTML ``tbody`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "tbody", "align valign" & commonAttr)
 
-macro td*(e: expr): expr {.immediate.} = 
+macro td*(e: expr): expr {.immediate.} =
   ## generates the HTML ``td`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "td", "colspan rowspan abbr axis headers scope" &
     " align valign" & commonAttr)
 
-macro textarea*(e: expr): expr {.immediate.} = 
+macro textarea*(e: expr): expr {.immediate.} =
   ## generates the HTML ``textarea`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "textarea", " name disabled readonly accesskey" &
     " tabindex" & commonAttr, "rows cols", false)
 
-macro tfoot*(e: expr): expr {.immediate.} = 
+macro tfoot*(e: expr): expr {.immediate.} =
   ## generates the HTML ``tfoot`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "tfoot", "align valign" & commonAttr)
 
-macro th*(e: expr): expr {.immediate.} = 
+macro th*(e: expr): expr {.immediate.} =
   ## generates the HTML ``th`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "th", "colspan rowspan abbr axis headers scope" &
     " align valign" & commonAttr)
 
-macro thead*(e: expr): expr {.immediate.} = 
+macro thead*(e: expr): expr {.immediate.} =
   ## generates the HTML ``thead`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "thead", "align valign" & commonAttr)
 
-macro title*(e: expr): expr {.immediate.} = 
+macro title*(e: expr): expr {.immediate.} =
   ## generates the HTML ``title`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "title")
 
-macro tr*(e: expr): expr {.immediate.} = 
+macro tr*(e: expr): expr {.immediate.} =
   ## generates the HTML ``tr`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "tr", "align valign" & commonAttr)
 
-macro tt*(e: expr): expr {.immediate.} = 
+macro tt*(e: expr): expr {.immediate.} =
   ## generates the HTML ``tt`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "tt", commonAttr)
 
-macro ul*(e: expr): expr {.immediate.} = 
+macro ul*(e: expr): expr {.immediate.} =
   ## generates the HTML ``ul`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "ul", commonAttr)
 
-macro `var`*(e: expr): expr {.immediate.} = 
+macro `var`*(e: expr): expr {.immediate.} =
   ## generates the HTML ``var`` element.
   let e = callsite()
   result = xmlCheckedTag(e, "var", commonAttr)
diff --git a/lib/pure/httpclient.nim b/lib/pure/httpclient.nim
index f11101511..4c2580da0 100644
--- a/lib/pure/httpclient.nim
+++ b/lib/pure/httpclient.nim
@@ -227,7 +227,7 @@ proc parseResponse(s: Socket, getBody: bool, timeout: int): Response =
       inc(linei, le)
       # Status code
       linei.inc skipWhitespace(line, linei)
-      result.status = line[linei .. -1]
+      result.status = line[linei .. ^1]
       parsedStatus = true
     else:
       # Parse headers
@@ -238,7 +238,7 @@ proc parseResponse(s: Socket, getBody: bool, timeout: int): Response =
       if line[linei] != ':': httpError("invalid headers")
       inc(linei) # Skip :
 
-      result.headers[name] = line[linei.. -1].strip()
+      result.headers[name] = line[linei.. ^1].strip()
   if not fullyRead:
     httpError("Connection was closed before full request has been made")
   if getBody:
@@ -442,7 +442,7 @@ proc request*(url: string, httpMethod = httpGET, extraHeaders = "",
   ## | Extra headers can be specified and must be separated by ``\c\L``
   ## | An optional timeout can be specified in miliseconds, if reading from the
   ## server takes longer than specified an ETimeout exception will be raised.
-  result = request(url, $httpMethod, extraHeaders, body, sslContext, timeout, 
+  result = request(url, $httpMethod, extraHeaders, body, sslContext, timeout,
                    userAgent, proxy)
 
 proc redirection(status: string): bool =
@@ -725,7 +725,7 @@ proc parseResponse(client: AsyncHttpClient,
       inc(linei, le)
       # Status code
       linei.inc skipWhitespace(line, linei)
-      result.status = line[linei .. -1]
+      result.status = line[linei .. ^1]
       parsedStatus = true
     else:
       # Parse headers
@@ -736,7 +736,7 @@ proc parseResponse(client: AsyncHttpClient,
       if line[linei] != ':': httpError("invalid headers")
       inc(linei) # Skip :
 
-      result.headers[name] = line[linei.. -1].strip()
+      result.headers[name] = line[linei.. ^1].strip()
   if not fullyRead:
     httpError("Connection was closed before full request has been made")
   if getBody:
diff --git a/lib/pure/json.nim b/lib/pure/json.nim
index 5041fe2f6..1617402c9 100644
--- a/lib/pure/json.nim
+++ b/lib/pure/json.nim
@@ -8,8 +8,8 @@
 #
 
 ## This module implements a simple high performance `JSON`:idx:
-## parser. JSON (JavaScript Object Notation) is a lightweight 
-## data-interchange format that is easy for humans to read and write 
+## parser. JSON (JavaScript Object Notation) is a lightweight
+## data-interchange format that is easy for humans to read and write
 ## (unlike XML). It is easy for machines to parse and generate.
 ## JSON is based on a subset of the JavaScript Programming Language,
 ## Standard ECMA-262 3rd Edition - December 1999.
@@ -50,10 +50,10 @@
 ##       }
 ##     ]
 
-import 
+import
   hashes, strutils, lexbase, streams, unicode, macros
 
-type 
+type
   JsonEventKind* = enum  ## enumeration of all events that may occur when parsing
     jsonError,           ## an error occurred during parsing
     jsonEof,             ## end of file reached
@@ -67,7 +67,7 @@ type
     jsonObjectEnd,       ## end of an object: the ``}`` token
     jsonArrayStart,      ## start of an array: the ``[`` token
     jsonArrayEnd         ## start of an array: the ``]`` token
-    
+
   TTokKind = enum        # must be synchronized with TJsonEventKind!
     tkError,
     tkEof,
@@ -83,7 +83,7 @@ type
     tkBracketRi,
     tkColon,
     tkComma
-    
+
   JsonError* = enum        ## enumeration that lists all errors that can occur
     errNone,               ## no error
     errInvalidToken,       ## invalid token
@@ -96,8 +96,8 @@ type
     errEOC_Expected,       ## ``*/`` expected
     errEofExpected,        ## EOF expected
     errExprExpected        ## expr expected
-    
-  ParserState = enum 
+
+  ParserState = enum
     stateEof, stateStart, stateObject, stateArray, stateExpectArrayComma,
     stateExpectObjectComma, stateExpectColon, stateExpectValue
 
@@ -111,7 +111,7 @@ type
 
 {.deprecated: [TJsonEventKind: JsonEventKind, TJsonError: JsonError,
   TJsonParser: JsonParser].}
- 
+
 const
   errorMessages: array [JsonError, string] = [
     "no error",
@@ -146,56 +146,56 @@ proc open*(my: var JsonParser, input: Stream, filename: string) =
   my.state = @[stateStart]
   my.kind = jsonError
   my.a = ""
-  
-proc close*(my: var JsonParser) {.inline.} = 
+
+proc close*(my: var JsonParser) {.inline.} =
   ## closes the parser `my` and its associated input stream.
   lexbase.close(my)
 
-proc str*(my: JsonParser): string {.inline.} = 
-  ## returns the character data for the events: ``jsonInt``, ``jsonFloat``, 
+proc str*(my: JsonParser): string {.inline.} =
+  ## returns the character data for the events: ``jsonInt``, ``jsonFloat``,
   ## ``jsonString``
   assert(my.kind in {jsonInt, jsonFloat, jsonString})
   return my.a
 
-proc getInt*(my: JsonParser): BiggestInt {.inline.} = 
+proc getInt*(my: JsonParser): BiggestInt {.inline.} =
   ## returns the number for the event: ``jsonInt``
   assert(my.kind == jsonInt)
   return parseBiggestInt(my.a)
 
-proc getFloat*(my: JsonParser): float {.inline.} = 
+proc getFloat*(my: JsonParser): float {.inline.} =
   ## returns the number for the event: ``jsonFloat``
   assert(my.kind == jsonFloat)
   return parseFloat(my.a)
 
-proc kind*(my: JsonParser): JsonEventKind {.inline.} = 
+proc kind*(my: JsonParser): JsonEventKind {.inline.} =
   ## returns the current event type for the JSON parser
   return my.kind
-  
-proc getColumn*(my: JsonParser): int {.inline.} = 
+
+proc getColumn*(my: JsonParser): int {.inline.} =
   ## get the current column the parser has arrived at.
   result = getColNumber(my, my.bufpos)
 
-proc getLine*(my: JsonParser): int {.inline.} = 
+proc getLine*(my: JsonParser): int {.inline.} =
   ## get the current line the parser has arrived at.
   result = my.lineNumber
 
-proc getFilename*(my: JsonParser): string {.inline.} = 
+proc getFilename*(my: JsonParser): string {.inline.} =
   ## get the filename of the file that the parser processes.
   result = my.filename
-  
-proc errorMsg*(my: JsonParser): string = 
+
+proc errorMsg*(my: JsonParser): string =
   ## returns a helpful error message for the event ``jsonError``
   assert(my.kind == jsonError)
   result = "$1($2, $3) Error: $4" % [
     my.filename, $getLine(my), $getColumn(my), errorMessages[my.err]]
 
-proc errorMsgExpected*(my: JsonParser, e: string): string = 
+proc errorMsgExpected*(my: JsonParser, e: string): string =
   ## returns an error message "`e` expected" in the same format as the
-  ## other error messages 
+  ## other error messages
   result = "$1($2, $3) Error: $4" % [
     my.filename, $getLine(my), $getColumn(my), e & " expected"]
 
-proc handleHexChar(c: char, x: var int): bool = 
+proc handleHexChar(c: char, x: var int): bool =
   result = true # Success
   case c
   of '0'..'9': x = (x shl 4) or (ord(c) - ord('0'))
@@ -208,8 +208,8 @@ proc parseString(my: var JsonParser): TTokKind =
   var pos = my.bufpos + 1
   var buf = my.buf
   while true:
-    case buf[pos] 
-    of '\0': 
+    case buf[pos]
+    of '\0':
       my.err = errQuoteExpected
       result = tkError
       break
@@ -218,21 +218,21 @@ proc parseString(my: var JsonParser): TTokKind =
       break
     of '\\':
       case buf[pos+1]
-      of '\\', '"', '\'', '/': 
+      of '\\', '"', '\'', '/':
         add(my.a, buf[pos+1])
         inc(pos, 2)
       of 'b':
         add(my.a, '\b')
-        inc(pos, 2)      
+        inc(pos, 2)
       of 'f':
         add(my.a, '\f')
-        inc(pos, 2)      
+        inc(pos, 2)
       of 'n':
         add(my.a, '\L')
-        inc(pos, 2)      
+        inc(pos, 2)
       of 'r':
         add(my.a, '\C')
-        inc(pos, 2)    
+        inc(pos, 2)
       of 't':
         add(my.a, '\t')
         inc(pos, 2)
@@ -244,15 +244,15 @@ proc parseString(my: var JsonParser): TTokKind =
         if handleHexChar(buf[pos], r): inc(pos)
         if handleHexChar(buf[pos], r): inc(pos)
         add(my.a, toUTF8(Rune(r)))
-      else: 
+      else:
         # don't bother with the error
         add(my.a, buf[pos])
         inc(pos)
-    of '\c': 
+    of '\c':
       pos = lexbase.handleCR(my, pos)
       buf = my.buf
       add(my.a, '\c')
-    of '\L': 
+    of '\L':
       pos = lexbase.handleLF(my, pos)
       buf = my.buf
       add(my.a, '\L')
@@ -260,25 +260,25 @@ proc parseString(my: var JsonParser): TTokKind =
       add(my.a, buf[pos])
       inc(pos)
   my.bufpos = pos # store back
-  
-proc skip(my: var JsonParser) = 
+
+proc skip(my: var JsonParser) =
   var pos = my.bufpos
   var buf = my.buf
-  while true: 
+  while true:
     case buf[pos]
-    of '/': 
-      if buf[pos+1] == '/': 
+    of '/':
+      if buf[pos+1] == '/':
         # skip line comment:
         inc(pos, 2)
         while true:
-          case buf[pos] 
-          of '\0': 
+          case buf[pos]
+          of '\0':
             break
-          of '\c': 
+          of '\c':
             pos = lexbase.handleCR(my, pos)
             buf = my.buf
             break
-          of '\L': 
+          of '\L':
             pos = lexbase.handleLF(my, pos)
             buf = my.buf
             break
@@ -288,44 +288,44 @@ proc skip(my: var JsonParser) =
         # skip long comment:
         inc(pos, 2)
         while true:
-          case buf[pos] 
-          of '\0': 
+          case buf[pos]
+          of '\0':
             my.err = errEOC_Expected
             break
-          of '\c': 
+          of '\c':
             pos = lexbase.handleCR(my, pos)
             buf = my.buf
-          of '\L': 
+          of '\L':
             pos = lexbase.handleLF(my, pos)
             buf = my.buf
           of '*':
             inc(pos)
-            if buf[pos] == '/': 
+            if buf[pos] == '/':
               inc(pos)
               break
           else:
             inc(pos)
-      else: 
+      else:
         break
-    of ' ', '\t': 
+    of ' ', '\t':
       inc(pos)
-    of '\c':  
+    of '\c':
       pos = lexbase.handleCR(my, pos)
       buf = my.buf
-    of '\L': 
+    of '\L':
       pos = lexbase.handleLF(my, pos)
       buf = my.buf
     else:
       break
   my.bufpos = pos
 
-proc parseNumber(my: var JsonParser) = 
+proc parseNumber(my: var JsonParser) =
   var pos = my.bufpos
   var buf = my.buf
-  if buf[pos] == '-': 
+  if buf[pos] == '-':
     add(my.a, '-')
     inc(pos)
-  if buf[pos] == '.': 
+  if buf[pos] == '.':
     add(my.a, "0.")
     inc(pos)
   else:
@@ -350,7 +350,7 @@ proc parseNumber(my: var JsonParser) =
       inc(pos)
   my.bufpos = pos
 
-proc parseName(my: var JsonParser) = 
+proc parseName(my: var JsonParser) =
   var pos = my.bufpos
   var buf = my.buf
   if buf[pos] in IdentStartChars:
@@ -359,11 +359,11 @@ proc parseName(my: var JsonParser) =
       inc(pos)
   my.bufpos = pos
 
-proc getTok(my: var JsonParser): TTokKind = 
+proc getTok(my: var JsonParser): TTokKind =
   setLen(my.a, 0)
   skip(my) # skip whitespace, comments
   case my.buf[my.bufpos]
-  of '-', '.', '0'..'9': 
+  of '-', '.', '0'..'9':
     parseNumber(my)
     if {'.', 'e', 'E'} in my.a:
       result = tkFloat
@@ -393,17 +393,17 @@ proc getTok(my: var JsonParser): TTokKind =
     result = tkEof
   of 'a'..'z', 'A'..'Z', '_':
     parseName(my)
-    case my.a 
+    case my.a
     of "null": result = tkNull
     of "true": result = tkTrue
     of "false": result = tkFalse
     else: result = tkError
-  else: 
+  else:
     inc(my.bufpos)
     result = tkError
   my.tok = result
 
-proc next*(my: var JsonParser) = 
+proc next*(my: var JsonParser) =
   ## retrieves the first/next event. This controls the parser.
   var tk = getTok(my)
   var i = my.state.len-1
@@ -416,13 +416,13 @@ proc next*(my: var JsonParser) =
     else:
       my.kind = jsonError
       my.err = errEofExpected
-  of stateStart: 
-    # tokens allowed? 
+  of stateStart:
+    # tokens allowed?
     case tk
     of tkString, tkInt, tkFloat, tkTrue, tkFalse, tkNull:
       my.state[i] = stateEof # expect EOF next!
       my.kind = JsonEventKind(ord(tk))
-    of tkBracketLe: 
+    of tkBracketLe:
       my.state.add(stateArray) # we expect any
       my.kind = jsonArrayStart
     of tkCurlyLe:
@@ -433,12 +433,12 @@ proc next*(my: var JsonParser) =
     else:
       my.kind = jsonError
       my.err = errEofExpected
-  of stateObject: 
+  of stateObject:
     case tk
     of tkString, tkInt, tkFloat, tkTrue, tkFalse, tkNull:
       my.state.add(stateExpectColon)
       my.kind = JsonEventKind(ord(tk))
-    of tkBracketLe: 
+    of tkBracketLe:
       my.state.add(stateExpectColon)
       my.state.add(stateArray)
       my.kind = jsonArrayStart
@@ -457,7 +457,7 @@ proc next*(my: var JsonParser) =
     of tkString, tkInt, tkFloat, tkTrue, tkFalse, tkNull:
       my.state.add(stateExpectArrayComma) # expect value next!
       my.kind = JsonEventKind(ord(tk))
-    of tkBracketLe: 
+    of tkBracketLe:
       my.state.add(stateExpectArrayComma)
       my.state.add(stateArray)
       my.kind = jsonArrayStart
@@ -472,8 +472,8 @@ proc next*(my: var JsonParser) =
       my.kind = jsonError
       my.err = errBracketRiExpected
   of stateExpectArrayComma:
-    case tk 
-    of tkComma: 
+    case tk
+    of tkComma:
       discard my.state.pop()
       next(my)
     of tkBracketRi:
@@ -484,8 +484,8 @@ proc next*(my: var JsonParser) =
       my.kind = jsonError
       my.err = errBracketRiExpected
   of stateExpectObjectComma:
-    case tk 
-    of tkComma: 
+    case tk
+    of tkComma:
       discard my.state.pop()
       next(my)
     of tkCurlyRi:
@@ -495,9 +495,9 @@ proc next*(my: var JsonParser) =
     else:
       my.kind = jsonError
       my.err = errCurlyRiExpected
-  of stateExpectColon: 
-    case tk 
-    of tkColon: 
+  of stateExpectColon:
+    case tk
+    of tkColon:
       my.state[i] = stateExpectValue
       next(my)
     else:
@@ -508,7 +508,7 @@ proc next*(my: var JsonParser) =
     of tkString, tkInt, tkFloat, tkTrue, tkFalse, tkNull:
       my.state[i] = stateExpectObjectComma
       my.kind = JsonEventKind(ord(tk))
-    of tkBracketLe: 
+    of tkBracketLe:
       my.state[i] = stateExpectObjectComma
       my.state.add(stateArray)
       my.kind = jsonArrayStart
@@ -532,8 +532,8 @@ type
     JString,
     JObject,
     JArray
-    
-  JsonNode* = ref JsonNodeObj ## JSON node 
+
+  JsonNode* = ref JsonNodeObj ## JSON node
   JsonNodeObj* {.acyclic.} = object
     case kind*: JsonNodeKind
     of JString:
@@ -605,6 +605,49 @@ proc newJArray*(): JsonNode =
   result.kind = JArray
   result.elems = @[]
 
+proc getStr*(n: JsonNode, default: string = ""): string =
+  ## Retrieves the string value of a `JString JsonNode`.
+  ##
+  ## Returns ``default`` if ``n`` is not a ``JString``.
+  if n.kind != JString: return default
+  else: return n.str
+
+proc getNum*(n: JsonNode, default: BiggestInt = 0): BiggestInt =
+  ## Retrieves the int value of a `JInt JsonNode`.
+  ##
+  ## Returns ``default`` if ``n`` is not a ``JInt``.
+  if n.kind != JInt: return default
+  else: return n.num
+
+proc getFNum*(n: JsonNode, default: float = 0.0): float =
+  ## Retrieves the float value of a `JFloat JsonNode`.
+  ##
+  ## Returns ``default`` if ``n`` is not a ``JFloat``.
+  if n.kind != JFloat: return default
+  else: return n.fnum
+
+proc getBVal*(n: JsonNode, default: bool = false): bool =
+  ## Retrieves the bool value of a `JBool JsonNode`.
+  ##
+  ## Returns ``default`` if ``n`` is not a ``JBool``.
+  if n.kind != JBool: return default
+  else: return n.bval
+
+proc getFields*(n: JsonNode,
+    default: seq[tuple[key: string, val: JsonNode]] = @[]):
+        seq[tuple[key: string, val: JsonNode]] =
+  ## Retrieves the key, value pairs of a `JObject JsonNode`.
+  ##
+  ## Returns ``default`` if ``n`` is not a ``JObject``.
+  if n.kind != JObject: return default
+  else: return n.fields
+
+proc getElems*(n: JsonNode, default: seq[JsonNode] = @[]): seq[JsonNode] =
+  ## Retrieves the int value of a `JArray JsonNode`.
+  ##
+  ## Returns ``default`` if ``n`` is not a ``JArray``.
+  if n.kind != JArray: return default
+  else: return n.elems
 
 proc `%`*(s: string): JsonNode =
   ## Generic constructor for JSON data. Creates a new `JString JsonNode`.
@@ -644,7 +687,7 @@ proc `%`*(elements: openArray[JsonNode]): JsonNode =
   newSeq(result.elems, elements.len)
   for i, p in pairs(elements): result.elems[i] = p
 
-proc toJson(x: PNimrodNode): PNimrodNode {.compiletime.} =
+proc toJson(x: NimNode): NimNode {.compiletime.} =
   case x.kind
   of nnkBracket:
     result = newNimNode(nnkBracket)
@@ -672,7 +715,7 @@ proc `==`* (a,b: JsonNode): bool =
   if a.isNil:
     if b.isNil: return true
     return false
-  elif b.isNil or a.kind != b.kind: 
+  elif b.isNil or a.kind != b.kind:
     return false
   else:
     return case a.kind
@@ -709,7 +752,7 @@ proc hash* (n:JsonNode): THash =
   of JNull:
     result = hash(0)
 
-proc len*(n: JsonNode): int = 
+proc len*(n: JsonNode): int =
   ## If `n` is a `JArray`, it returns the number of elements.
   ## If `n` is a `JObject`, it returns the number of pairs.
   ## Else it returns 0.
@@ -727,7 +770,7 @@ proc `[]`*(node: JsonNode, name: string): JsonNode =
     if key == name:
       return item
   return nil
-  
+
 proc `[]`*(node: JsonNode, index: int): JsonNode =
   ## Gets the node at `index` in an Array. Result is undefined if `index`
   ## is out of bounds
@@ -744,12 +787,12 @@ proc hasKey*(node: JsonNode, key: string): bool =
 proc existsKey*(node: JsonNode, key: string): bool {.deprecated.} = node.hasKey(key)
   ## Deprecated for `hasKey`
 
-proc add*(father, child: JsonNode) = 
-  ## Adds `child` to a JArray node `father`. 
+proc add*(father, child: JsonNode) =
+  ## Adds `child` to a JArray node `father`.
   assert father.kind == JArray
   father.elems.add(child)
 
-proc add*(obj: JsonNode, key: string, val: JsonNode) = 
+proc add*(obj: JsonNode, key: string, val: JsonNode) =
   ## Adds ``(key, val)`` pair to the JObject node `obj`. For speed
   ## reasons no check for duplicate keys is performed!
   ## But ``[]=`` performs the check.
@@ -760,7 +803,7 @@ proc `[]=`*(obj: JsonNode, key: string, val: JsonNode) =
   ## Sets a field from a `JObject`. Performs a check for duplicate keys.
   assert(obj.kind == JObject)
   for i in 0..obj.fields.len-1:
-    if obj.fields[i].key == key: 
+    if obj.fields[i].key == key:
       obj.fields[i].val = val
       return
   obj.fields.add((key, val))
@@ -815,17 +858,17 @@ proc copy*(p: JsonNode): JsonNode =
 
 # ------------- pretty printing ----------------------------------------------
 
-proc indent(s: var string, i: int) = 
+proc indent(s: var string, i: int) =
   s.add(spaces(i))
 
 proc newIndent(curr, indent: int, ml: bool): int =
   if ml: return curr + indent
   else: return indent
 
-proc nl(s: var string, ml: bool) = 
+proc nl(s: var string, ml: bool) =
   if ml: s.add("\n")
 
-proc escapeJson*(s: string): string = 
+proc escapeJson*(s: string): string =
   ## Converts a string `s` to its JSON representation.
   result = newStringOfCap(s.len + s.len shr 3)
   result.add("\"")
@@ -842,13 +885,13 @@ proc escapeJson*(s: string): string =
       result.add(toHex(r, 4))
   result.add("\"")
 
-proc toPretty(result: var string, node: JsonNode, indent = 2, ml = true, 
+proc toPretty(result: var string, node: JsonNode, indent = 2, ml = true,
               lstArr = false, currIndent = 0) =
   case node.kind
   of JObject:
     if currIndent != 0 and not lstArr: result.nl(ml)
     result.indent(currIndent) # Indentation
-    if node.fields.len > 0:  
+    if node.fields.len > 0:
       result.add("{")
       result.nl(ml) # New line
       for i in 0..len(node.fields)-1:
@@ -856,17 +899,17 @@ proc toPretty(result: var string, node: JsonNode, indent = 2, ml = true,
           result.add(", ")
           result.nl(ml) # New Line
         # Need to indent more than {
-        result.indent(newIndent(currIndent, indent, ml)) 
+        result.indent(newIndent(currIndent, indent, ml))
         result.add(escapeJson(node.fields[i].key))
         result.add(": ")
-        toPretty(result, node.fields[i].val, indent, ml, false, 
+        toPretty(result, node.fields[i].val, indent, ml, false,
                  newIndent(currIndent, indent, ml))
       result.nl(ml)
       result.indent(currIndent) # indent the same as {
       result.add("}")
     else:
       result.add("{}")
-  of JString: 
+  of JString:
     if lstArr: result.indent(currIndent)
     result.add(escapeJson(node.str))
   of JInt:
@@ -934,11 +977,11 @@ iterator mpairs*(node: var JsonNode): var tuple[key: string, val: JsonNode] =
   for keyVal in mitems(node.fields):
     yield keyVal
 
-proc eat(p: var JsonParser, tok: TTokKind) = 
+proc eat(p: var JsonParser, tok: TTokKind) =
   if p.tok == tok: discard getTok(p)
   else: raiseParseErr(p, tokToStr[tok])
 
-proc parseJson(p: var JsonParser): JsonNode = 
+proc parseJson(p: var JsonParser): JsonNode =
   ## Parses JSON from a JSON Parser `p`.
   case p.tok
   of tkString:
@@ -955,17 +998,17 @@ proc parseJson(p: var JsonParser): JsonNode =
   of tkTrue:
     result = newJBool(true)
     discard getTok(p)
-  of tkFalse: 
+  of tkFalse:
     result = newJBool(false)
     discard getTok(p)
-  of tkNull: 
+  of tkNull:
     result = newJNull()
     discard getTok(p)
-  of tkCurlyLe: 
+  of tkCurlyLe:
     result = newJObject()
     discard getTok(p)
-    while p.tok != tkCurlyRi: 
-      if p.tok != tkString: 
+    while p.tok != tkCurlyRi:
+      if p.tok != tkString:
         raiseParseErr(p, "string literal as key expected")
       var key = p.a
       discard getTok(p)
@@ -978,7 +1021,7 @@ proc parseJson(p: var JsonParser): JsonNode =
   of tkBracketLe:
     result = newJArray()
     discard getTok(p)
-    while p.tok != tkBracketRi: 
+    while p.tok != tkBracketRi:
       result.add(parseJson(p))
       if p.tok != tkComma: break
       discard getTok(p)
@@ -1098,10 +1141,10 @@ when false:
     of jsonObjectEnd: echo("}")
     of jsonArrayStart: echo("[")
     of jsonArrayEnd: echo("]")
-    
+
   close(x)
 
-# { "json": 5 } 
+# { "json": 5 }
 # To get that we shall use, obj["json"]
 
 when isMainModule:
diff --git a/lib/pure/logging.nim b/lib/pure/logging.nim
index b64437c89..ca674af4b 100644
--- a/lib/pure/logging.nim
+++ b/lib/pure/logging.nim
@@ -10,7 +10,7 @@
 ## This module implements a simple logger. It has been designed to be as simple
 ## as possible to avoid bloat, if this library does not fulfill your needs,
 ## write your own.
-## 
+##
 ## Format strings support the following variables which must be prefixed with
 ## the dollar operator (``$``):
 ##
@@ -21,13 +21,13 @@
 ## $time         Current time
 ## $app          ``os.getAppFilename()``
 ## ============  =======================
-## 
+##
 ##
 ## The following example demonstrates logging to three different handlers
 ## simultaneously:
 ##
 ## .. code-block:: nim
-##     
+##
 ##    var L = newConsoleLogger()
 ##    var fL = newFileLogger("test.log", fmtStr = verboseFmtStr)
 ##    var rL = newRollingFileLogger("rolling.log", fmtStr = verboseFmtStr)
@@ -64,20 +64,20 @@ const
 
 type
   Logger* = ref object of RootObj ## abstract logger; the base type of all loggers
-    levelThreshold*: Level    ## only messages of level >= levelThreshold 
+    levelThreshold*: Level    ## only messages of level >= levelThreshold
                               ## should be processed
     fmtStr: string ## = defaultFmtStr by default, see substituteLog for $date etc.
-    
+
   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
     f: File
-  
-  RollingFileLogger* = ref object of FileLogger ## logger that writes the 
+
+  RollingFileLogger* = ref object of FileLogger ## logger that writes the
                                                 ## messages to a file and
                                                 ## performs log rotation
-    maxLines: int # maximum number of lines    
+    maxLines: int # maximum number of lines
     curLine : int
     baseName: string # initial filename
     baseMode: FileMode # initial file mode
@@ -86,22 +86,22 @@ type
 {.deprecated: [TLevel: Level, PLogger: Logger, PConsoleLogger: ConsoleLogger,
     PFileLogger: FileLogger, PRollingFileLogger: RollingFileLogger].}
 
-proc substituteLog(frmt: string): string = 
+proc substituteLog(frmt: string): string =
   ## converts $date to the current date
   ## converts $time to the current time
   ## converts $app to getAppFilename()
-  ## converts 
+  ## converts
   result = newStringOfCap(frmt.len + 20)
   var i = 0
-  while i < frmt.len: 
-    if frmt[i] != '$': 
+  while i < frmt.len:
+    if frmt[i] != '$':
       result.add(frmt[i])
       inc(i)
     else:
       inc(i)
       var v = ""
       var app = getAppFilename()
-      while frmt[i] in IdentChars: 
+      while frmt[i] in IdentChars:
         v.add(toLower(frmt[i]))
         inc(i)
       case v
@@ -114,12 +114,12 @@ proc substituteLog(frmt: string): string =
 
 method log*(logger: Logger, level: Level,
             frmt: string, args: varargs[string, `$`]) {.
-            raises: [Exception], 
+            raises: [Exception],
             tags: [TimeEffect, WriteIOEffect, ReadIOEffect].} =
   ## Override this method in custom loggers. Default implementation does
   ## nothing.
   discard
-  
+
 method log*(logger: ConsoleLogger, level: Level,
             frmt: string, args: varargs[string, `$`]) =
   ## Logs to the console using ``logger`` only.
@@ -127,14 +127,14 @@ method log*(logger: ConsoleLogger, level: Level,
     writeln(stdout, LevelNames[level], " ", substituteLog(logger.fmtStr),
             frmt % args)
 
-method log*(logger: FileLogger, level: Level, 
+method log*(logger: FileLogger, level: Level,
             frmt: string, args: varargs[string, `$`]) =
   ## Logs to a file using ``logger`` only.
   if level >= logger.levelThreshold:
     writeln(logger.f, LevelNames[level], " ",
             substituteLog(logger.fmtStr), frmt % args)
 
-proc defaultFilename*(): string = 
+proc defaultFilename*(): string =
   ## Returns the default filename for a logger.
   var (path, name, ext) = splitFile(getAppFilename())
   result = changeFileExt(path / name, "log")
@@ -145,10 +145,10 @@ proc newConsoleLogger*(levelThreshold = lvlAll, fmtStr = defaultFmtStr): Console
   result.fmtStr = fmtStr
   result.levelThreshold = levelThreshold
 
-proc newFileLogger*(filename = defaultFilename(), 
+proc newFileLogger*(filename = defaultFilename(),
                     mode: FileMode = fmAppend,
                     levelThreshold = lvlAll,
-                    fmtStr = defaultFmtStr): FileLogger = 
+                    fmtStr = defaultFmtStr): FileLogger =
   ## Creates a new file logger. This logger logs to a file.
   new(result)
   result.levelThreshold = levelThreshold
@@ -170,14 +170,14 @@ proc countFiles(filename: string): int =
     if kind == pcFile:
       let llfn = name & ext & ExtSep
       if path.extractFilename.startsWith(llfn):
-        let numS = path.extractFilename[llfn.len .. -1]
+        let numS = path.extractFilename[llfn.len .. ^1]
         try:
           let num = parseInt(numS)
           if num > result:
             result = num
         except ValueError: discard
 
-proc newRollingFileLogger*(filename = defaultFilename(), 
+proc newRollingFileLogger*(filename = defaultFilename(),
                            mode: FileMode = fmReadWrite,
                            levelThreshold = lvlAll,
                            fmtStr = defaultFmtStr,
@@ -192,9 +192,9 @@ proc newRollingFileLogger*(filename = defaultFilename(),
   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)
@@ -206,7 +206,7 @@ proc rotate(logger: RollingFileLogger) =
     moveFile(dir / (name & ext & srcSuff),
              dir / (name & ext & ExtSep & $(i+1)))
 
-method log*(logger: RollingFileLogger, level: Level, 
+method log*(logger: RollingFileLogger, level: Level,
             frmt: string, args: varargs[string, `$`]) =
   ## Logs to a file using rolling ``logger`` only.
   if level >= logger.levelThreshold:
@@ -216,8 +216,8 @@ method log*(logger: RollingFileLogger, level: Level,
       logger.logFiles.inc
       logger.curLine = 0
       logger.f = open(logger.baseName, logger.baseMode)
-    
-    writeln(logger.f, LevelNames[level], " ", frmt % args)
+
+    writeln(logger.f, LevelNames[level], " ",substituteLog(logger.fmtStr), frmt % args)
     logger.curLine.inc
 
 # --------
@@ -226,7 +226,7 @@ var level {.threadvar.}: Level   ## global log filter
 var handlers {.threadvar.}: seq[Logger] ## handlers with their own log levels
 
 proc logLoop(level: Level, frmt: string, args: varargs[string, `$`]) =
-  for logger in items(handlers): 
+  for logger in items(handlers):
     if level >= logger.levelThreshold:
       log(logger, level, frmt, args)
 
@@ -235,7 +235,7 @@ template log*(level: Level, frmt: string, args: varargs[string, `$`]) =
   bind logLoop
   bind `%`
   bind logging.level
-  
+
   if level >= logging.level:
     logLoop(level, frmt, args)
 
@@ -243,19 +243,19 @@ template debug*(frmt: string, args: varargs[string, `$`]) =
   ## Logs a debug message to all registered handlers.
   log(lvlDebug, frmt, args)
 
-template info*(frmt: string, args: varargs[string, `$`]) = 
+template info*(frmt: string, args: varargs[string, `$`]) =
   ## Logs an info message to all registered handlers.
   log(lvlInfo, frmt, args)
 
-template warn*(frmt: string, args: varargs[string, `$`]) = 
+template warn*(frmt: string, args: varargs[string, `$`]) =
   ## Logs a warning message to all registered handlers.
   log(lvlWarn, frmt, args)
 
-template error*(frmt: string, args: varargs[string, `$`]) = 
+template error*(frmt: string, args: varargs[string, `$`]) =
   ## Logs an error message to all registered handlers.
   log(lvlError, frmt, args)
-  
-template fatal*(frmt: string, args: varargs[string, `$`]) =  
+
+template fatal*(frmt: string, args: varargs[string, `$`]) =
   ## Logs a fatal error message to all registered handlers.
   log(lvlFatal, frmt, args)
 
@@ -287,5 +287,5 @@ when isMainModule:
   addHandler(rL)
   for i in 0 .. 25:
     info("hello" & $i, [])
-  
+
 
diff --git a/lib/pure/math.nim b/lib/pure/math.nim
index c902af381..aa64933fb 100644
--- a/lib/pure/math.nim
+++ b/lib/pure/math.nim
@@ -152,6 +152,7 @@ proc randomize*(seed: int) {.benign.}
   ## Note: Does nothing for the JavaScript target,
   ## as JavaScript does not support this.
 
+{.push noSideEffect.}
 when not defined(JS):
   proc sqrt*(x: float): float {.importc: "sqrt", header: "<math.h>".}
     ## computes the square root of `x`.
@@ -273,6 +274,8 @@ else:
     var y = exp(2.0*x)
     return (y-1.0)/(y+1.0)
 
+{.pop.}
+
 proc `mod`*(x, y: float): float =
   result = if y == 0.0: x else: x - y * (x/y).floor
 
@@ -370,3 +373,7 @@ when isMainModule and not defined(JS):
   for i in 0..SIZE-1:
     assert buf[i] == random(high(int)), "non deterministic random seeding"
   echo "random values equal after reseeding"
+
+  # Check for no side effect annotation
+  proc mySqrt(num: float): float {.noSideEffect.} =
+    return sqrt(num)
diff --git a/lib/pure/os.nim b/lib/pure/os.nim
index d2e112c18..f53abe81d 100644
--- a/lib/pure/os.nim
+++ b/lib/pure/os.nim
@@ -1121,8 +1121,8 @@ when defined(windows):
 
 else:
   const
-    useNSGetEnviron = defined(macosx) and
-      (defined(createNimRtl) or defined(useNimRtl))
+    useNSGetEnviron = defined(macosx)
+
   when useNSGetEnviron:
     # From the manual:
     # Shared libraries and bundles don't have direct access to environ,
@@ -1863,16 +1863,21 @@ proc getFileSize*(file: string): BiggestInt {.rtl, extern: "nos$1",
       close(f)
     else: raiseOSError(osLastError())
 
+proc expandTilde*(path: string): string {.tags: [ReadEnvEffect].}
+
 proc findExe*(exe: string): string {.tags: [ReadDirEffect, ReadEnvEffect].} =
   ## Searches for `exe` in the current working directory and then
   ## in directories listed in the ``PATH`` environment variable.
   ## Returns "" if the `exe` cannot be found. On DOS-like platforms, `exe`
-  ## is added an ``.exe`` file extension if it has no extension.
+  ## is added the `ExeExt <#ExeExt>`_ file extension if it has none.
   result = addFileExt(exe, os.ExeExt)
   if existsFile(result): return
   var path = string(os.getEnv("PATH"))
   for candidate in split(path, PathSep):
-    var x = candidate / result
+    when defined(windows):
+      var x = candidate / result
+    else:
+      var x = expandTilde(candidate) / result
     if existsFile(x): return x
   result = ""
 
diff --git a/lib/pure/osproc.nim b/lib/pure/osproc.nim
index cd3700019..eb7ad64bb 100644
--- a/lib/pure/osproc.nim
+++ b/lib/pure/osproc.nim
@@ -137,7 +137,7 @@ proc startProcess*(command: string,
   ## `env` is the environment that will be passed to the process.
   ## If ``env == nil`` the environment is inherited of
   ## the parent process. `options` are additional flags that may be passed
-  ## to `startProcess`. See the documentation of ``TProcessOption`` for the
+  ## to `startProcess`. See the documentation of ``ProcessOption`` for the
   ## meaning of these flags. You need to `close` the process when done.
   ##
   ## Note that you can't pass any `args` if you use the option
diff --git a/lib/pure/pegs.nim b/lib/pure/pegs.nim
index 04c75ecae..39f0bfa95 100644
--- a/lib/pure/pegs.nim
+++ b/lib/pure/pegs.nim
@@ -744,24 +744,6 @@ template fillMatches(s, caps, c: expr) =
     else:
       caps[k] = nil
 
-proc match*(s: string, pattern: Peg, matches: var openArray[string],
-            start = 0): bool {.nosideEffect, rtl, extern: "npegs$1Capture".} =
-  ## returns ``true`` if ``s[start..]`` matches the ``pattern`` and
-  ## the captured substrings in the array ``matches``. If it does not
-  ## match, nothing is written into ``matches`` and ``false`` is
-  ## returned.
-  var c: Captures
-  c.origStart = start
-  result = rawMatch(s, pattern, start, c) == len(s) - start
-  if result: fillMatches(s, matches, c)
-
-proc match*(s: string, pattern: Peg,
-            start = 0): bool {.nosideEffect, rtl, extern: "npegs$1".} =
-  ## returns ``true`` if ``s`` matches the ``pattern`` beginning from ``start``.
-  var c: Captures
-  c.origStart = start
-  result = rawMatch(s, pattern, start, c) == len(s)-start
-
 proc matchLen*(s: string, pattern: Peg, matches: var openArray[string],
                start = 0): int {.nosideEffect, rtl, extern: "npegs$1Capture".} =
   ## the same as ``match``, but it returns the length of the match,
@@ -783,6 +765,20 @@ proc matchLen*(s: string, pattern: Peg,
   c.origStart = start
   result = rawMatch(s, pattern, start, c)
 
+proc match*(s: string, pattern: Peg, matches: var openArray[string],
+            start = 0): bool {.nosideEffect, rtl, extern: "npegs$1Capture".} =
+  ## returns ``true`` if ``s[start..]`` matches the ``pattern`` and
+  ## the captured substrings in the array ``matches``. If it does not
+  ## match, nothing is written into ``matches`` and ``false`` is
+  ## returned.
+  result = matchLen(s, pattern, matches, start) != -1
+
+proc match*(s: string, pattern: Peg,
+            start = 0): bool {.nosideEffect, rtl, extern: "npegs$1".} =
+  ## returns ``true`` if ``s`` matches the ``pattern`` beginning from ``start``.
+  result = matchLen(s, pattern, start) != -1
+
+
 proc find*(s: string, pattern: Peg, matches: var openArray[string],
            start = 0): int {.nosideEffect, rtl, extern: "npegs$1Capture".} =
   ## returns the starting position of ``pattern`` in ``s`` and the captured
@@ -1686,8 +1682,10 @@ when isMainModule:
   assert "ABC 0232".match(peg"\w+\s+\d+")
   assert "ABC".match(peg"\d+ / \w+")
 
+  var accum: seq[string] = @[]
   for word in split("00232this02939is39an22example111", peg"\d+"):
-    writeln(stdout, word)
+    accum.add(word)
+  assert(accum == @["this", "is", "an", "example"])
 
   assert matchLen("key", ident) == 3
 
@@ -1748,8 +1746,10 @@ when isMainModule:
   else:
     assert false
 
+  accum = @[]
   for x in findAll("abcdef", peg".", 3):
-    echo x
+    accum.add(x)
+  assert(accum == @["d", "e", "f"])
 
   for x in findAll("abcdef", peg"^{.}", 3):
     assert x == "d"
@@ -1783,3 +1783,9 @@ when isMainModule:
   if "foo" =~ peg"{'foo'}":
     assert matches[0] == "foo"
   else: assert false
+
+  let empty_test = peg"^\d*"
+  let str = "XYZ"
+
+  assert(str.find(empty_test) == 0)
+  assert(str.match(empty_test))
diff --git a/lib/pure/rationals.nim b/lib/pure/rationals.nim
index 04aa8316a..3b68a2381 100644
--- a/lib/pure/rationals.nim
+++ b/lib/pure/rationals.nim
@@ -12,6 +12,7 @@
 ## a denominator `den`, both of type int. The denominator can not be 0.
 
 import math
+import hashes
 
 type Rational*[T] = object
   ## a rational number, consisting of a numerator and denominator
@@ -32,7 +33,7 @@ proc `$`*[T](x: Rational[T]): string =
   ## Turn a rational number into a string.
   result = $x.num & "/" & $x.den
 
-proc toRational*[T](x: SomeInteger): Rational[T] =
+proc toRational*[T](x: T): Rational[T] =
   ## Convert some integer `x` to a rational number.
   result.num = x
   result.den = 1
@@ -188,7 +189,7 @@ proc `/=`*[T](x: var Rational[T], y: T) =
   x.den *= y
   reduce(x)
 
-proc cmp*(x, y: Rational): int =
+proc cmp*(x, y: Rational): int {.procvar.} =
   ## Compares two rationals.
   (x - y).num
 
@@ -205,6 +206,17 @@ proc abs*[T](x: Rational[T]): Rational[T] =
   result.num = abs x.num
   result.den = abs x.den
 
+proc hash*[T](x: Rational[T]): THash =
+  ## Computes hash for rational `x`
+  # reduce first so that hash(x) == hash(y) for x == y
+  var copy = x
+  reduce(copy)
+
+  var h: THash = 0
+  h = h !& hash(copy.num)
+  h = h !& hash(copy.den)
+  result = !$h
+  
 when isMainModule:
   var
     z = Rational[int](num: 0, den: 1)
@@ -242,11 +254,13 @@ when isMainModule:
   assert( not(o > o) )
   assert( cmp(o, o) == 0 )
   assert( cmp(z, z) == 0 )
+  assert( hash(o) == hash(o) )
 
   assert( a == b )
   assert( a >= b )
   assert( not(b > a) )
   assert( cmp(a, b) == 0 )
+  assert( hash(a) == hash(b) )
 
   var x = 1//3
 
@@ -270,6 +284,6 @@ when isMainModule:
   y /= 9
   assert( y == 13//27 )
 
-  assert toRational[int, int](5) == 5//1
+  assert toRational(5) == 5//1
   assert abs(toFloat(y) - 0.4814814814814815) < 1.0e-7
   assert toInt(z) == 0
diff --git a/lib/pure/rawsockets.nim b/lib/pure/rawsockets.nim
index ac348eb1b..a30c23ada 100644
--- a/lib/pure/rawsockets.nim
+++ b/lib/pure/rawsockets.nim
@@ -39,6 +39,9 @@ export
   SO_KEEPALIVE, SO_OOBINLINE, SO_REUSEADDR,
   MSG_PEEK
 
+when defined(macosx):
+    export SO_NOSIGPIPE
+
 type
   Port* = distinct uint16  ## port type
   
@@ -428,10 +431,6 @@ proc selectWrite*(writefds: var seq[SocketHandle],
   
   pruneSocketSet(writefds, (wr))
 
-# We ignore signal SIGPIPE on Darwin
-when defined(macosx):
-  signal(SIGPIPE, SIG_IGN)
-
 when defined(Windows):
   var wsa: WSAData
   if wsaStartup(0x0101'i16, addr wsa) != 0: raiseOSError(osLastError())
diff --git a/lib/pure/redis.nim b/lib/pure/redis.nim
index 64d3e1470..9177ddee5 100644
--- a/lib/pure/redis.nim
+++ b/lib/pure/redis.nim
@@ -285,6 +285,30 @@ proc keys*(r: Redis, pattern: string): RedisList =
   r.sendCommand("KEYS", pattern)
   return r.readArray()
 
+proc scan*(r: Redis, cursor: var BiggestInt): RedisList =
+  ## Find all keys matching the given pattern and yield it to client in portions
+  ## using default Redis values for MATCH and COUNT parameters
+  r.sendCommand("SCAN", $cursor)
+  let reply = r.readArray()
+  cursor = strutils.parseBiggestInt(reply[0])
+  return reply[1..high(reply)]
+
+proc scan*(r: Redis, cursor: var BiggestInt, pattern: string): RedisList =
+  ## Find all keys matching the given pattern and yield it to client in portions
+  ## using cursor as a client query identifier. Using default Redis value for COUNT argument
+  r.sendCommand("SCAN", $cursor, ["MATCH", pattern])
+  let reply = r.readArray()
+  cursor = strutils.parseBiggestInt(reply[0])
+  return reply[1..high(reply)]
+
+proc scan*(r: Redis, cursor: var BiggestInt, pattern: string, count: int): RedisList = 
+  ## Find all keys matching the given pattern and yield it to client in portions
+  ## using cursor as a client query identifier.
+  r.sendCommand("SCAN", $cursor, ["MATCH", pattern, "COUNT", $count])
+  let reply = r.readArray()
+  cursor = strutils.parseBiggestInt(reply[0])
+  return reply[1..high(reply)]
+
 proc move*(r: Redis, key: string, db: int): bool =
   ## Move a key to another database. Returns `true` on a successful move.
   r.sendCommand("MOVE", key, $db)
diff --git a/lib/pure/ropes.nim b/lib/pure/ropes.nim
index 4cc64a154..5c7fedfe3 100644
--- a/lib/pure/ropes.nim
+++ b/lib/pure/ropes.nim
@@ -52,9 +52,9 @@ proc len*(a: Rope): int {.rtl, extern: "nro$1".} =
   ## the rope's length
   if a == nil: result = 0
   else: result = a.length
-  
+
 proc newRope(): Rope = new(result)
-proc newRope(data: string): Rope = 
+proc newRope(data: string): Rope =
   new(result)
   result.length = len(data)
   result.data = data
@@ -65,18 +65,18 @@ var
 
 when countCacheMisses:
   var misses, hits: int
-  
-proc splay(s: string, tree: Rope, cmpres: var int): Rope = 
+
+proc splay(s: string, tree: Rope, cmpres: var int): Rope =
   var c: int
   var t = tree
   N.left = nil
   N.right = nil               # reset to nil
   var le = N
   var r = N
-  while true: 
+  while true:
     c = cmp(s, t.data)
-    if c < 0: 
-      if (t.left != nil) and (s < t.left.data): 
+    if c < 0:
+      if (t.left != nil) and (s < t.left.data):
         var y = t.left
         t.left = y.right
         y.right = t
@@ -85,8 +85,8 @@ proc splay(s: string, tree: Rope, cmpres: var int): Rope =
       r.left = t
       r = t
       t = t.left
-    elif c > 0: 
-      if (t.right != nil) and (s > t.right.data): 
+    elif c > 0:
+      if (t.right != nil) and (s > t.right.data):
         var y = t.right
         t.right = y.left
         y.left = t
@@ -95,8 +95,8 @@ proc splay(s: string, tree: Rope, cmpres: var int): Rope =
       le.right = t
       le = t
       t = t.right
-    else: 
-      break 
+    else:
+      break
   cmpres = c
   le.right = t.left
   r.left = t.right
@@ -104,50 +104,50 @@ proc splay(s: string, tree: Rope, cmpres: var int): Rope =
   t.right = N.left
   result = t
 
-proc insertInCache(s: string, tree: Rope): Rope = 
+proc insertInCache(s: string, tree: Rope): Rope =
   var t = tree
-  if t == nil: 
+  if t == nil:
     result = newRope(s)
     when countCacheMisses: inc(misses)
     return 
   var cmp: int
   t = splay(s, t, cmp)
-  if cmp == 0: 
+  if cmp == 0:
     # We get here if it's already in the Tree
     # Don't add it again
     result = t
     when countCacheMisses: inc(hits)
-  else: 
+  else:
     when countCacheMisses: inc(misses)
     result = newRope(s)
-    if cmp < 0: 
+    if cmp < 0:
       result.left = t.left
       result.right = t
       t.left = nil
-    else: 
+    else:
       # i > t.item:
       result.right = t.right
       result.left = t
       t.right = nil
 
 proc rope*(s: string): Rope {.rtl, extern: "nro$1Str".} =
-  ## Converts a string to a rope. 
-  if s.len == 0: 
+  ## Converts a string to a rope.
+  if s.len == 0:
     result = nil
-  elif cacheEnabled: 
+  elif cacheEnabled:
     result = insertInCache(s, cache)
     cache = result
-  else: 
+  else:
     result = newRope(s)
-  
-proc rope*(i: BiggestInt): Rope {.rtl, extern: "nro$1BiggestInt".} = 
-  ## Converts an int to a rope. 
+
+proc rope*(i: BiggestInt): Rope {.rtl, extern: "nro$1BiggestInt".} =
+  ## Converts an int to a rope.
   result = rope($i)
 
 proc rope*(f: BiggestFloat): Rope {.rtl, extern: "nro$1BiggestFloat".} =
-  ## Converts a float to a rope. 
+  ## Converts a float to a rope.
   result = rope($f)
-  
+
 proc enableCache*() {.rtl, extern: "nro$1".} =
   ## Enables the caching of leaves. This reduces the memory footprint at
   ## the cost of runtime efficiency.
@@ -160,9 +160,9 @@ proc disableCache*() {.rtl, extern: "nro$1".} =
 
 proc `&`*(a, b: Rope): Rope {.rtl, extern: "nroConcRopeRope".} =
   ## the concatenation operator for ropes.
-  if a == nil: 
+  if a == nil:
     result = b
-  elif b == nil: 
+  elif b == nil:
     result = a
   else:
     result = newRope()
@@ -177,16 +177,16 @@ proc `&`*(a, b: Rope): Rope {.rtl, extern: "nroConcRopeRope".} =
     else:
       result.left = a
       result.right = b
-  
-proc `&`*(a: Rope, b: string): Rope {.rtl, extern: "nroConcRopeStr".} = 
+
+proc `&`*(a: Rope, b: string): Rope {.rtl, extern: "nroConcRopeStr".} =
   ## the concatenation operator for ropes.
   result = a & rope(b)
-  
-proc `&`*(a: string, b: Rope): Rope {.rtl, extern: "nroConcStrRope".} = 
+
+proc `&`*(a: string, b: Rope): Rope {.rtl, extern: "nroConcStrRope".} =
   ## the concatenation operator for ropes.
   result = rope(a) & b
-  
-proc `&`*(a: openArray[Rope]): Rope {.rtl, extern: "nroConcOpenArray".} = 
+
+proc `&`*(a: openArray[Rope]): Rope {.rtl, extern: "nroConcOpenArray".} =
   ## the concatenation operator for an openarray of ropes.
   for i in countup(0, high(a)): result = result & a[i]
 
@@ -219,7 +219,7 @@ iterator leaves*(r: Rope): string =
   ## iterates over any leaf string in the rope `r`.
   if r != nil:
     var stack = @[r]
-    while stack.len > 0: 
+    while stack.len > 0:
       var it = stack.pop
       while isConc(it):
         stack.add(it.right)
@@ -227,7 +227,7 @@ iterator leaves*(r: Rope): string =
         assert(it != nil)
       assert(it.data != nil)
       yield it.data
-  
+
 iterator items*(r: Rope): char =
   ## iterates over any character in the rope `r`.
   for s in leaves(r):
@@ -237,7 +237,7 @@ proc write*(f: File, r: Rope) {.rtl, extern: "nro$1".} =
   ## writes a rope to a file.
   for s in leaves(r): write(f, s)
 
-proc `$`*(r: Rope): string  {.rtl, extern: "nroToString".}= 
+proc `$`*(r: Rope): string  {.rtl, extern: "nroToString".}=
   ## converts a rope back to a string.
   result = newString(r.len)
   setLen(result, 0)
@@ -251,25 +251,25 @@ when false:
     new(result)
     result.length = -idx
   
-  proc compileFrmt(frmt: string): Rope = 
+  proc compileFrmt(frmt: string): Rope =
     var i = 0
     var length = len(frmt)
     result = nil
     var num = 0
-    while i < length: 
-      if frmt[i] == '$': 
+    while i < length:
+      if frmt[i] == '$':
         inc(i)
         case frmt[i]
-        of '$': 
+        of '$':
           add(result, "$")
           inc(i)
-        of '#': 
+        of '#':
           inc(i)
           add(result, compiledArg(num+1))
           inc(num)
-        of '0'..'9': 
+        of '0'..'9':
           var j = 0
-          while true: 
+          while true:
             j = j * 10 + ord(frmt[i]) - ord('0')
             inc(i)
             if frmt[i] notin {'0'..'9'}: break 
@@ -285,13 +285,13 @@ when false:
           add(s, compiledArg(j))
         else: raise newException(EInvalidValue, "invalid format string")
       var start = i
-      while i < length: 
+      while i < length:
         if frmt[i] != '$': inc(i)
-        else: break 
-      if i - 1 >= start: 
+        else: break
+      if i - 1 >= start:
         add(result, substr(frmt, start, i-1))
-  
-proc `%`*(frmt: string, args: openArray[Rope]): Rope {. 
+
+proc `%`*(frmt: string, args: openArray[Rope]): Rope {.
   rtl, extern: "nroFormat".} =
   ## `%` substitution operator for ropes. Does not support the ``$identifier``
   ## nor ``${identifier}`` notations.
@@ -299,23 +299,23 @@ proc `%`*(frmt: string, args: openArray[Rope]): Rope {.
   var length = len(frmt)
   result = nil
   var num = 0
-  while i < length: 
-    if frmt[i] == '$': 
+  while i < length:
+    if frmt[i] == '$':
       inc(i)
       case frmt[i]
-      of '$': 
+      of '$':
         add(result, "$")
         inc(i)
-      of '#': 
+      of '#':
         inc(i)
         add(result, args[num])
         inc(num)
-      of '0'..'9': 
+      of '0'..'9':
         var j = 0
-        while true: 
+        while true:
           j = j * 10 + ord(frmt[i]) - ord('0')
           inc(i)
-          if frmt[i] notin {'0'..'9'}: break 
+          if frmt[i] notin {'0'..'9'}: break
         add(result, args[j-1])
       of '{':
         inc(i)
@@ -325,13 +325,14 @@ proc `%`*(frmt: string, args: openArray[Rope]): Rope {.
           inc(i)
         if frmt[i] == '}': inc(i)
         else: raise newException(ValueError, "invalid format string")
+
         add(result, args[j-1])
       else: raise newException(ValueError, "invalid format string")
     var start = i
-    while i < length: 
+    while i < length:
       if frmt[i] != '$': inc(i)
-      else: break 
-    if i - 1 >= start: 
+      else: break
+    if i - 1 >= start:
       add(result, substr(frmt, start, i - 1))
 
 proc addf*(c: var Rope, frmt: string, args: openArray[Rope]) {.
@@ -339,29 +340,46 @@ proc addf*(c: var Rope, frmt: string, args: openArray[Rope]) {.
   ## shortcut for ``add(c, frmt % args)``.
   add(c, frmt % args)
 
+const
+  bufSize = 1024              # 1 KB is reasonable
+
 proc equalsFile*(r: Rope, f: File): bool {.rtl, extern: "nro$1File".} =
   ## returns true if the contents of the file `f` equal `r`.
-  var bufSize = 1024 # reasonable start value
-  var buf = alloc(bufSize)
+  var 
+    buf: array[bufSize, char]
+    bpos = buf.len
+    blen = buf.len
+
   for s in leaves(r):
-    if s.len > bufSize:
-      bufSize = max(bufSize * 2, s.len)
-      buf = realloc(buf, bufSize)
-    var readBytes = readBuffer(f, buf, s.len)
-    result = readBytes == s.len and equalMem(buf, cstring(s), s.len)
-    if not result: break
-  if result:
-    result = readBuffer(f, buf, 1) == 0 # really at the end of file?
-  dealloc(buf)
+    var spos = 0
+    let slen = s.len
+    while spos < slen:
+      if bpos == blen:
+        # Read more data
+        bpos = 0
+        blen = readBuffer(f, addr(buf[0]), buf.len)
+        if blen == 0:  # no more data in file
+          result = false
+          return
+      let n = min(blen - bpos, slen - spos)
+      # TODO There's gotta be a better way of comparing here...
+      if not equalMem(addr(buf[bpos]), 
+                      cast[pointer](cast[int](cstring(s))+spos), n):
+        result = false
+        return
+      spos += n
+      bpos += n
+
+  result = readBuffer(f, addr(buf[0]), 1) == 0  # check that we've read all
 
-proc equalsFile*(r: Rope, f: string): bool {.rtl, extern: "nro$1Str".} =
+proc equalsFile*(r: Rope, filename: string): bool {.rtl, extern: "nro$1Str".} =
   ## returns true if the contents of the file `f` equal `r`. If `f` does not
   ## exist, false is returned.
-  var bin: File
-  result = open(bin, f)
+  var f: File
+  result = open(f, filename)
   if result:
-    result = equalsFile(r, bin)
-    close(bin)
+    result = equalsFile(r, f)
+    close(f)
 
 new(N) # init dummy node for splay algorithm
 
diff --git a/lib/pure/smtp.nim b/lib/pure/smtp.nim
index 26f0c9591..81198f9e1 100644
--- a/lib/pure/smtp.nim
+++ b/lib/pure/smtp.nim
@@ -238,7 +238,7 @@ proc sendMail*(smtp: AsyncSmtp, fromAddr: string,
   await smtp.sock.send("MAIL FROM:<" & fromAddr & ">\c\L")
   await smtp.checkReply("250")
   for address in items(toAddrs):
-    await smtp.sock.send("RCPT TO:<" & smtp.address & ">\c\L")
+    await smtp.sock.send("RCPT TO:<" & address & ">\c\L")
     await smtp.checkReply("250")
   
   # Send the message
diff --git a/lib/pure/strutils.nim b/lib/pure/strutils.nim
index 655203cda..2678f4fc8 100644
--- a/lib/pure/strutils.nim
+++ b/lib/pure/strutils.nim
@@ -386,7 +386,7 @@ proc split*(s: string, sep: string): seq[string] {.noSideEffect,
   ## `split iterator <#split.i,string,string>`_.
   accumulateResult(split(s, sep))
 
-proc toHex*(x: BiggestInt, len: int): string {.noSideEffect,
+proc toHex*(x: BiggestInt, len: Positive): string {.noSideEffect,
   rtl, extern: "nsuToHex".} =
   ## Converts `x` to its hexadecimal representation.
   ##
@@ -403,7 +403,7 @@ proc toHex*(x: BiggestInt, len: int): string {.noSideEffect,
     # handle negative overflow
     if n == 0 and x < 0: n = -1
 
-proc intToStr*(x: int, minchars: int = 1): string {.noSideEffect,
+proc intToStr*(x: int, minchars: Positive = 1): string {.noSideEffect,
   rtl, extern: "nsuIntToStr".} =
   ## Converts `x` to its decimal representation.
   ##
@@ -499,7 +499,7 @@ proc parseEnum*[T: enum](s: string, default: T): T =
       return e
   result = default
 
-proc repeat*(c: char, count: int): string {.noSideEffect,
+proc repeat*(c: char, count: Natural): string {.noSideEffect,
   rtl, extern: "nsuRepeatChar".} =
   ## Returns a string of length `count` consisting only of
   ## the character `c`. You can use this proc to left align strings. Example:
@@ -514,7 +514,7 @@ proc repeat*(c: char, count: int): string {.noSideEffect,
   result = newString(count)
   for i in 0..count-1: result[i] = c
 
-proc repeat*(s: string, n: int): string {.noSideEffect,
+proc repeat*(s: string, n: Natural): string {.noSideEffect,
   rtl, extern: "nsuRepeatStr".} =
   ## Returns String `s` concatenated `n` times.  Example:
   ##
@@ -523,7 +523,7 @@ proc repeat*(s: string, n: int): string {.noSideEffect,
   result = newStringOfCap(n * s.len)
   for i in 1..n: result.add(s)
 
-template spaces*(n: int): string =  repeat(' ',n)
+template spaces*(n: Natural): string =  repeat(' ',n)
   ## Returns a String with `n` space characters. You can use this proc
   ## to left align strings. Example:
   ##
@@ -535,15 +535,15 @@ template spaces*(n: int): string =  repeat(' ',n)
   ##   echo text1 & spaces(max(0, width - text1.len)) & "|"
   ##   echo text2 & spaces(max(0, width - text2.len)) & "|"
 
-proc repeatChar*(count: int, c: char = ' '): string {.deprecated.} = repeat(c, count)
+proc repeatChar*(count: Natural, c: char = ' '): string {.deprecated.} = repeat(c, count)
   ## deprecated: use repeat() or spaces()
 
-proc repeatStr*(count: int, s: string): string {.deprecated.} = repeat(s, count)
+proc repeatStr*(count: Natural, s: string): string {.deprecated.} = repeat(s, count)
   ## deprecated: use repeat(string, count) or string.repeat(count)
 
-proc align*(s: string, count: int, padding = ' '): string {.
+proc align*(s: string, count: Natural, padding = ' '): string {.
   noSideEffect, rtl, extern: "nsuAlignString".} =
-  ## Aligns a string `s` with `padding`, so that is of length `count`.
+  ## Aligns a string `s` with `padding`, so that it is of length `count`.
   ##
   ## `padding` characters (by default spaces) are added before `s` resulting in
   ## right alignment. If ``s.len >= count``, no spaces are added and `s` is
@@ -682,7 +682,7 @@ proc endsWith*(s, suffix: string): bool {.noSideEffect,
     inc(i)
   if suffix[i] == '\0': return true
 
-proc continuesWith*(s, substr: string, start: int): bool {.noSideEffect,
+proc continuesWith*(s, substr: string, start: Natural): bool {.noSideEffect,
   rtl, extern: "nsuContinuesWith".} =
   ## Returns true iff ``s`` continues with ``substr`` at position ``start``.
   ##
@@ -693,8 +693,8 @@ proc continuesWith*(s, substr: string, start: int): bool {.noSideEffect,
     if s[i+start] != substr[i]: return false
     inc(i)
 
-proc addSep*(dest: var string, sep = ", ", startLen = 0) {.noSideEffect,
-                                                           inline.} =
+proc addSep*(dest: var string, sep = ", ", startLen: Natural = 0)
+  {.noSideEffect, inline.} =
   ## Adds a separator to `dest` only if its length is bigger than `startLen`.
   ##
   ## A shorthand for:
@@ -784,7 +784,7 @@ proc findAux(s, sub: string, start: int, a: SkipTable): int =
     inc(j, a[s[j+m]])
   return -1
 
-proc find*(s, sub: string, start: int = 0): int {.noSideEffect,
+proc find*(s, sub: string, start: Natural = 0): int {.noSideEffect,
   rtl, extern: "nsuFindStr".} =
   ## Searches for `sub` in `s` starting at position `start`.
   ##
@@ -793,7 +793,7 @@ proc find*(s, sub: string, start: int = 0): int {.noSideEffect,
   preprocessSub(sub, a)
   result = findAux(s, sub, start, a)
 
-proc find*(s: string, sub: char, start: int = 0): int {.noSideEffect,
+proc find*(s: string, sub: char, start: Natural = 0): int {.noSideEffect,
   rtl, extern: "nsuFindChar".} =
   ## Searches for `sub` in `s` starting at position `start`.
   ##
@@ -802,7 +802,7 @@ proc find*(s: string, sub: char, start: int = 0): int {.noSideEffect,
     if sub == s[i]: return i
   return -1
 
-proc find*(s: string, chars: set[char], start: int = 0): int {.noSideEffect,
+proc find*(s: string, chars: set[char], start: Natural = 0): int {.noSideEffect,
   rtl, extern: "nsuFindCharSet".} =
   ## Searches for `chars` in `s` starting at position `start`.
   ##
@@ -933,7 +933,7 @@ proc replaceWord*(s, sub: string, by = ""): string {.noSideEffect,
     var j = findAux(s, sub, i, a)
     if j < 0: break
     # word boundary?
-    if (j == 0 or s[j-1] notin wordChars) and 
+    if (j == 0 or s[j-1] notin wordChars) and
         (j+sub.len >= s.len or s[j+sub.len] notin wordChars):
       add result, substr(s, i, j - 1)
       add result, by
@@ -976,7 +976,7 @@ proc parseOctInt*(s: string): int {.noSideEffect,
     of '\0': break
     else: raise newException(ValueError, "invalid integer: " & s)
 
-proc toOct*(x: BiggestInt, len: int): string {.noSideEffect,
+proc toOct*(x: BiggestInt, len: Positive): string {.noSideEffect,
   rtl, extern: "nsuToOct".} =
   ## Converts `x` into its octal representation.
   ##
@@ -992,7 +992,7 @@ proc toOct*(x: BiggestInt, len: int): string {.noSideEffect,
     shift = shift + 3
     mask = mask shl 3
 
-proc toBin*(x: BiggestInt, len: int): string {.noSideEffect,
+proc toBin*(x: BiggestInt, len: Positive): string {.noSideEffect,
   rtl, extern: "nsuToBin".} =
   ## Converts `x` into its binary representation.
   ##
@@ -1221,7 +1221,7 @@ proc formatBiggestFloat*(f: BiggestFloat, format: FloatFormatMode = ffDefault,
   ## of significant digits to be printed.
   ## `precision`'s default value is the maximum number of meaningful digits
   ## after the decimal point for Nim's ``biggestFloat`` type.
-  ## 
+  ##
   ## If ``precision == 0``, it tries to format it nicely.
   const floatFormatToChar: array[FloatFormatMode, char] = ['g', 'f', 'e']
   var
@@ -1286,7 +1286,7 @@ proc findNormalized(x: string, inArray: openArray[string]): int =
   return -1
 
 proc invalidFormatString() {.noinline.} =
-  raise newException(ValueError, "invalid format string")  
+  raise newException(ValueError, "invalid format string")
 
 proc addf*(s: var string, formatstr: string, a: varargs[string, `$`]) {.
   noSideEffect, rtl, extern: "nsuAddf".} =
@@ -1416,7 +1416,7 @@ when isMainModule:
 
   doAssert "-ld a-ldz -ld".replaceWord("-ld") == " a-ldz "
   doAssert "-lda-ldz -ld abc".replaceWord("-ld") == "-lda-ldz  abc"
-  
+
   type MyEnum = enum enA, enB, enC, enuD, enE
   doAssert parseEnum[MyEnum]("enu_D") == enuD
 
diff --git a/lib/pure/times.nim b/lib/pure/times.nim
index 25f6b85f6..5cc9b4993 100644
--- a/lib/pure/times.nim
+++ b/lib/pure/times.nim
@@ -33,36 +33,36 @@ when not defined(JS):
 
 when defined(posix) and not defined(JS):
   type
-    TimeImpl {.importc: "time_t", header: "<sys/time.h>".} = int
+    TimeImpl {.importc: "time_t", header: "<time.h>".} = int
     Time* = distinct TimeImpl ## distinct type that represents a time
                               ## measured as number of seconds since the epoch
-    
-    Timeval {.importc: "struct timeval", 
+
+    Timeval {.importc: "struct timeval",
               header: "<sys/select.h>".} = object ## struct timeval
-      tv_sec: int  ## Seconds. 
-      tv_usec: int ## Microseconds. 
-      
+      tv_sec: int  ## Seconds.
+      tv_usec: int ## Microseconds.
+
   # we cannot import posix.nim here, because posix.nim depends on times.nim.
-  # Ok, we could, but I don't want circular dependencies. 
+  # Ok, we could, but I don't want circular dependencies.
   # And gettimeofday() is not defined in the posix module anyway. Sigh.
-  
+
   proc posix_gettimeofday(tp: var Timeval, unused: pointer = nil) {.
     importc: "gettimeofday", header: "<sys/time.h>".}
 
   # we also need tzset() to make sure that tzname is initialized
-  proc tzset() {.importc, header: "<sys/time.h>".}
+  proc tzset() {.importc, header: "<time.h>".}
   # calling tzset() implicitly to initialize tzname data.
   tzset()
 
 elif defined(windows):
   import winlean
-  
+
   when defined(vcc):
     # newest version of Visual C++ defines time_t to be of 64 bits
     type TimeImpl {.importc: "time_t", header: "<time.h>".} = int64
   else:
     type TimeImpl {.importc: "time_t", header: "<time.h>".} = int32
-  
+
   type
     Time* = distinct TimeImpl
 
@@ -166,7 +166,7 @@ proc fromSeconds*(since1970: float): Time {.tags: [], raises: [], benign.}
   ## Takes a float which contains the number of seconds since the unix epoch and
   ## returns a time object.
 
-proc fromSeconds*(since1970: int64): Time {.tags: [], raises: [], benign.} = 
+proc fromSeconds*(since1970: int64): Time {.tags: [], raises: [], benign.} =
   ## Takes an int which contains the number of seconds since the unix epoch and
   ## returns a time object.
   fromSeconds(float(since1970))
@@ -184,12 +184,12 @@ proc `-`*(a, b: Time): int64 {.
   ## computes the difference of two calendar times. Result is in seconds.
 
 proc `<`*(a, b: Time): bool {.
-  rtl, extern: "ntLtTime", tags: [], raises: [].} = 
+  rtl, extern: "ntLtTime", tags: [], raises: [].} =
   ## returns true iff ``a < b``, that is iff a happened before b.
   result = a - b < 0
-  
+
 proc `<=` * (a, b: Time): bool {.
-  rtl, extern: "ntLeTime", tags: [], raises: [].}= 
+  rtl, extern: "ntLeTime", tags: [], raises: [].}=
   ## returns true iff ``a <= b``.
   result = a - b <= 0
 
@@ -211,7 +211,7 @@ proc getStartMilsecs*(): int {.deprecated, tags: [TimeEffect], benign.}
   ## get the miliseconds from the start of the program. **Deprecated since
   ## version 0.8.10.** Use ``epochTime`` or ``cpuTime`` instead.
 
-proc initInterval*(miliseconds, seconds, minutes, hours, days, months, 
+proc initInterval*(miliseconds, seconds, minutes, hours, days, months,
                    years: int = 0): TimeInterval =
   ## creates a new ``TimeInterval``.
   result.miliseconds = miliseconds
@@ -227,9 +227,9 @@ proc isLeapYear*(year: int): bool =
 
   if year mod 400 == 0:
     return true
-  elif year mod 100 == 0: 
+  elif year mod 100 == 0:
     return false
-  elif year mod 4 == 0: 
+  elif year mod 4 == 0:
     return true
   else:
     return false
@@ -238,7 +238,7 @@ proc getDaysInMonth*(month: Month, year: int): int =
   ## gets the amount of days in a ``month`` of a ``year``
 
   # http://www.dispersiondesign.com/articles/time/number_of_days_in_a_month
-  case month 
+  case month
   of mFeb: result = if isLeapYear(year): 29 else: 28
   of mApr, mJun, mSep, mNov: result = 30
   else: result = 31
@@ -250,7 +250,7 @@ proc toSeconds(a: TimeInfo, interval: TimeInterval): float =
   var anew = a
   var newinterv = interval
   result = 0
-  
+
   newinterv.months += interval.years * 12
   var curMonth = anew.month
   for mth in 1 .. newinterv.months:
@@ -290,18 +290,18 @@ proc `-`*(a: TimeInfo, interval: TimeInterval): TimeInfo =
   else:
     result = getLocalTime(fromSeconds(t - secs))
 
-when not defined(JS):  
+when not defined(JS):
   proc epochTime*(): float {.rtl, extern: "nt$1", tags: [TimeEffect].}
     ## gets time after the UNIX epoch (1970) in seconds. It is a float
-    ## because sub-second resolution is likely to be supported (depending 
+    ## because sub-second resolution is likely to be supported (depending
     ## on the hardware/OS).
 
   proc cpuTime*(): float {.rtl, extern: "nt$1", tags: [TimeEffect].}
     ## gets time spent that the CPU spent to run the current process in
     ## seconds. This may be more useful for benchmarking than ``epochTime``.
     ## However, it may measure the real time instead (depending on the OS).
-    ## The value of the result has no meaning. 
-    ## To generate useful timing values, take the difference between 
+    ## The value of the result has no meaning.
+    ## To generate useful timing values, take the difference between
     ## the results of two ``cpuTime`` calls:
     ##
     ## .. code-block:: nim
@@ -322,10 +322,10 @@ when not defined(JS):
         weekday {.importc: "tm_wday".},
         yearday {.importc: "tm_yday".},
         isdst {.importc: "tm_isdst".}: cint
-  
+
     TimeInfoPtr = ptr StructTM
     Clock {.importc: "clock_t".} = distinct int
-  
+
   proc localtime(timer: ptr Time): TimeInfoPtr {.
     importc: "localtime", header: "<time.h>", tags: [].}
   proc gmtime(timer: ptr Time): TimeInfoPtr {.
@@ -341,12 +341,12 @@ when not defined(JS):
   #  strftime(s: CString, maxsize: int, fmt: CString, t: tm): int {.
   #    importc: "strftime", header: "<time.h>".}
   proc getClock(): Clock {.importc: "clock", header: "<time.h>", tags: [TimeEffect].}
-  proc difftime(a, b: Time): float {.importc: "difftime", header: "<time.h>", 
+  proc difftime(a, b: Time): float {.importc: "difftime", header: "<time.h>",
     tags: [].}
-  
+
   var
     clocksPerSec {.importc: "CLOCKS_PER_SEC", nodecl.}: int
-    
+
   # our own procs on top of that:
   proc tmToTimeInfo(tm: StructTM, local: bool): TimeInfo =
     const
@@ -370,7 +370,7 @@ when not defined(JS):
           "UTC",
       timezone: if local: getTimezone() else: 0
     )
-  
+
   proc timeInfoToTM(t: TimeInfo): StructTM =
     const
       weekDays: array [WeekDay, int8] = [1'i8,2'i8,3'i8,4'i8,5'i8,6'i8,0'i8]
@@ -383,11 +383,11 @@ when not defined(JS):
     result.weekday = weekDays[t.weekday]
     result.yearday = t.yearday
     result.isdst = if t.isDST: 1 else: 0
-  
+
   when not defined(useNimRtl):
     proc `-` (a, b: Time): int64 =
       return toBiggestInt(difftime(a, b))
-  
+
   proc getStartMilsecs(): int =
     #echo "clocks per sec: ", clocksPerSec, "clock: ", int(getClock())
     #return getClock() div (clocksPerSec div 1000)
@@ -400,37 +400,37 @@ when not defined(JS):
       posix_gettimeofday(a)
       result = a.tv_sec * 1000'i64 + a.tv_usec div 1000'i64
       #echo "result: ", result
-    
+
   proc getTime(): Time = return timec(nil)
   proc getLocalTime(t: Time): TimeInfo =
     var a = t
     result = tmToTimeInfo(localtime(addr(a))[], true)
     # copying is needed anyway to provide reentrancity; thus
     # the conversion is not expensive
-  
+
   proc getGMTime(t: Time): TimeInfo =
     var a = t
     result = tmToTimeInfo(gmtime(addr(a))[], false)
     # copying is needed anyway to provide reentrancity; thus
     # the conversion is not expensive
-  
+
   proc timeInfoToTime(timeInfo: TimeInfo): Time =
     var cTimeInfo = timeInfo # for C++ we have to make a copy,
     # because the header of mktime is broken in my version of libc
     return mktime(timeInfoToTM(cTimeInfo))
 
-  proc toStringTillNL(p: cstring): string = 
+  proc toStringTillNL(p: cstring): string =
     result = ""
     var i = 0
-    while p[i] != '\0' and p[i] != '\10' and p[i] != '\13': 
+    while p[i] != '\0' and p[i] != '\10' and p[i] != '\13':
       add(result, p[i])
       inc(i)
-    
+
   proc `$`(timeInfo: TimeInfo): string =
     # BUGFIX: asctime returns a newline at the end!
     var p = asctime(timeInfoToTM(timeInfo))
     result = toStringTillNL(p)
-  
+
   proc `$`(time: Time): string =
     # BUGFIX: ctime returns a newline at the end!
     var a = time
@@ -440,17 +440,17 @@ when not defined(JS):
     epochDiff = 116444736000000000'i64
     rateDiff = 10000000'i64 # 100 nsecs
 
-  proc unixTimeToWinTime*(t: Time): int64 = 
+  proc unixTimeToWinTime*(t: Time): int64 =
     ## converts a UNIX `Time` (``time_t``) to a Windows file time
     result = int64(t) * rateDiff + epochDiff
-    
-  proc winTimeToUnixTime*(t: int64): Time = 
+
+  proc winTimeToUnixTime*(t: int64): Time =
     ## converts a Windows time to a UNIX `Time` (``time_t``)
     result = Time((t - epochDiff) div rateDiff)
- 
+
   proc getTzname(): tuple[nonDST, DST: string] =
     return ($tzname[0], $tzname[1])
-  
+
   proc getTimezone(): int =
     return timezone
 
@@ -459,7 +459,7 @@ when not defined(JS):
   proc toSeconds(time: Time): float = float(time)
 
   when not defined(useNimRtl):
-    proc epochTime(): float = 
+    proc epochTime(): float =
       when defined(posix):
         var a: Timeval
         posix_gettimeofday(a)
@@ -473,14 +473,14 @@ when not defined(JS):
         result = toFloat(int(secs)) + toFloat(int(subsecs)) * 0.0000001
       else:
         {.error: "unknown OS".}
-      
-    proc cpuTime(): float = 
+
+    proc cpuTime(): float =
       result = toFloat(int(getClock())) / toFloat(clocksPerSec)
-    
+
 elif defined(JS):
   proc newDate(): Time {.importc: "new Date".}
   proc internGetTime(): Time {.importc: "new Date", tags: [].}
-  
+
   proc newDate(value: float): Time {.importc: "new Date".}
   proc newDate(value: string): Time {.importc: "new Date".}
   proc getTime(): Time =
@@ -490,7 +490,7 @@ elif defined(JS):
   const
     weekDays: array [0..6, WeekDay] = [
       dSun, dMon, dTue, dWed, dThu, dFri, dSat]
-  
+
   proc getLocalTime(t: Time): TimeInfo =
     result.second = t.getSeconds()
     result.minute = t.getMinutes()
@@ -510,7 +510,7 @@ elif defined(JS):
     result.year = t.getUTCFullYear()
     result.weekday = weekDays[t.getUTCDay()]
     result.yearday = 0
-  
+
   proc timeInfoToTime*(timeInfo: TimeInfo): Time =
     result = internGetTime()
     result.setSeconds(timeInfo.second)
@@ -519,16 +519,16 @@ elif defined(JS):
     result.setMonth(ord(timeInfo.month))
     result.setFullYear(timeInfo.year)
     result.setDate(timeInfo.monthday)
-  
+
   proc `$`(timeInfo: TimeInfo): string = return $(timeInfoToTime(timeInfo))
   proc `$`(time: Time): string = return $time.toLocaleString()
-    
-  proc `-` (a, b: Time): int64 = 
+
+  proc `-` (a, b: Time): int64 =
     return a.getTime() - b.getTime()
-  
+
   var
     startMilsecs = getTime()
-  
+
   proc getStartMilsecs(): int =
     ## get the miliseconds from the start of the program
     return int(getTime() - startMilsecs)
@@ -541,6 +541,8 @@ elif defined(JS):
 
   proc getTimezone(): int = result = newDate().getTimezoneOffset()
 
+  proc epochTime*(): float {.tags: [TimeEffect].} = newDate().toSeconds()
+
 proc getDateStr*(): string {.rtl, extern: "nt$1", tags: [TimeEffect].} =
   ## gets the current date as a string of the format ``YYYY-MM-DD``.
   var ti = getLocalTime(getTime())
@@ -561,7 +563,7 @@ proc `$`*(day: WeekDay): string =
 
 proc `$`*(m: Month): string =
   ## stingify operator for ``Month``.
-  const lookup: array[Month, string] = ["January", "February", "March", 
+  const lookup: array[Month, string] = ["January", "February", "March",
       "April", "May", "June", "July", "August", "September", "October",
       "November", "December"]
   return lookup[m]
@@ -682,7 +684,7 @@ proc formatToken(info: TimeInfo, token: string, buf: var string) =
 proc format*(info: TimeInfo, f: string): string =
   ## This function formats `info` as specified by `f`. The following format
   ## specifiers are available:
-  ## 
+  ##
   ## ==========  =================================================================================  ================================================
   ## Specifier   Description                                                                        Example
   ## ==========  =================================================================================  ================================================
@@ -729,14 +731,14 @@ proc format*(info: TimeInfo, f: string): string =
 
       currentF = ""
       if f[i] == '\0': break
-      
+
       if f[i] == '\'':
         inc(i) # Skip '
         while f[i] != '\'' and f.len-1 > i:
           result.add(f[i])
           inc(i)
       else: result.add(f[i])
-      
+
     else:
       # Check if the letter being added matches previous accumulated buffer.
       if currentF.len < 1 or currentF[high(currentF)] == f[i]:
@@ -803,7 +805,7 @@ proc parseToken(info: var TimeInfo; token, value: string; j: var int) =
       info.weekday = dSat
       j += 8
     else:
-      raise newException(ValueError, "invalid day of week ")    
+      raise newException(ValueError, "invalid day of week ")
   of "h", "H":
     var pd = parseInt(value[j..j+1], sv)
     info.hour = sv
@@ -854,7 +856,7 @@ proc parseToken(info: var TimeInfo; token, value: string; j: var int) =
     of "dec":
       info.month =  mDec
     else:
-      raise newException(ValueError, "invalid month") 
+      raise newException(ValueError, "invalid month")
     j += 3
   of "MMMM":
     if value.len >= j+7 and value[j..j+6].cmpIgnoreCase("january") == 0:
@@ -894,7 +896,7 @@ proc parseToken(info: var TimeInfo; token, value: string; j: var int) =
       info.month =  mDec
       j += 8
     else:
-      raise newException(ValueError, "invalid month") 
+      raise newException(ValueError, "invalid month")
   of "s":
     var pd = parseInt(value[j..j+1], sv)
     info.second = sv
@@ -949,7 +951,7 @@ proc parseToken(info: var TimeInfo; token, value: string; j: var int) =
   else:
     # Ignore the token and move forward in the value string by the same length
     j += token.len
-    
+
 proc parse*(value, layout: string): TimeInfo =
   ## This function parses a date/time string using the standard format identifiers (below)
   ## The function defaults information not provided in the format string from the running program (timezone, month, year, etc)
@@ -987,7 +989,7 @@ proc parse*(value, layout: string): TimeInfo =
   ## ``hh'->'mm`` will give ``01->56``.  The following characters can be
   ## inserted without quoting them: ``:`` ``-`` ``(`` ``)`` ``/`` ``[`` ``]``
   ## ``,``. However you don't need to necessarily separate format specifiers, a
-  ## unambiguous format string like ``yyyyMMddhhmmss`` is valid too.    
+  ## unambiguous format string like ``yyyyMMddhhmmss`` is valid too.
   var i = 0 # pointer for format string
   var j = 0 # pointer for value string
   var token = ""
@@ -1038,28 +1040,28 @@ when isMainModule:
   echo t.format("ddd ddMMMhhmmssZZZyyyy")
   assert t.format("ddd dd MMM hh:mm:ss ZZZ yyyy") == "Tue 19 Jan 03:14:07 UTC 2038"
   assert t.format("ddd ddMMMhh:mm:ssZZZyyyy") == "Tue 19Jan03:14:07UTC2038"
-  
+
   assert t.format("d dd ddd dddd h hh H HH m mm M MM MMM MMMM s" &
-    " ss t tt y yy yyy yyyy yyyyy z zz zzz ZZZ") == 
+    " ss t tt y yy yyy yyyy yyyyy z zz zzz ZZZ") ==
     "19 19 Tue Tuesday 3 03 3 03 14 14 1 01 Jan January 7 07 A AM 8 38 038 2038 02038 0 00 00:00 UTC"
 
   assert t.format("yyyyMMddhhmmss") == "20380119031407"
-  
+
   var t2 = getGMTime(fromSeconds(160070789)) # Mon 27 Jan 16:06:29 GMT 1975
   assert t2.format("d dd ddd dddd h hh H HH m mm M MM MMM MMMM s" &
     " ss t tt y yy yyy yyyy yyyyy z zz zzz ZZZ") ==
     "27 27 Mon Monday 4 04 16 16 6 06 1 01 Jan January 29 29 P PM 5 75 975 1975 01975 0 00 00:00 UTC"
-  
+
   when not defined(JS) and sizeof(Time) == 8:
     var t3 = getGMTime(fromSeconds(889067643645)) # Fri  7 Jun 19:20:45 BST 30143
     assert t3.format("d dd ddd dddd h hh H HH m mm M MM MMM MMMM s" &
-      " ss t tt y yy yyy yyyy yyyyy z zz zzz ZZZ") == 
+      " ss t tt y yy yyy yyyy yyyyy z zz zzz ZZZ") ==
       "7 07 Fri Friday 6 06 18 18 20 20 6 06 Jun June 45 45 P PM 3 43 143 0143 30143 0 00 00:00 UTC"
-    assert t3.format(":,[]()-/") == ":,[]()-/" 
-  
+    assert t3.format(":,[]()-/") == ":,[]()-/"
+
   var t4 = getGMTime(fromSeconds(876124714)) # Mon  6 Oct 08:58:34 BST 1997
   assert t4.format("M MM MMM MMMM") == "10 10 Oct October"
-  
+
   # Interval tests
   assert((t4 - initInterval(years = 2)).format("yyyy") == "1995")
   assert((t4 - initInterval(years = 7, minutes = 34, seconds = 24)).format("yyyy mm ss") == "1990 24 10")
diff --git a/lib/pure/unicode.nim b/lib/pure/unicode.nim
index a6f8f916b..4a9f4631d 100644
--- a/lib/pure/unicode.nim
+++ b/lib/pure/unicode.nim
@@ -19,7 +19,7 @@ type
   Rune16* = distinct int16 ## 16 bit Unicode character
 
 {.deprecated: [TRune: Rune, TRune16: Rune16].}
-  
+
 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)
@@ -39,7 +39,7 @@ proc runeLen*(s: string): int {.rtl, extern: "nuc$1".} =
     else: inc i
     inc(result)
 
-proc runeLenAt*(s: string, i: int): int =
+proc runeLenAt*(s: string, i: Natural): int =
   ## returns the number of bytes the rune starting at ``s[i]`` takes.
   if ord(s[i]) <=% 127: result = 1
   elif ord(s[i]) shr 5 == 0b110: result = 2
@@ -58,7 +58,7 @@ template fastRuneAt*(s: string, i: int, result: expr, doInc = true) =
     when doInc: inc(i)
   elif ord(s[i]) shr 5 == 0b110:
     # assert(ord(s[i+1]) shr 6 == 0b10)
-    result = Rune((ord(s[i]) and (ones(5))) shl 6 or 
+    result = Rune((ord(s[i]) and (ones(5))) shl 6 or
                   (ord(s[i+1]) and ones(6)))
     when doInc: inc(i, 2)
   elif ord(s[i]) shr 4 == 0b1110:
@@ -77,7 +77,7 @@ template fastRuneAt*(s: string, i: int, result: expr, doInc = true) =
              (ord(s[i+2]) and ones(6)) shl 6 or
              (ord(s[i+3]) and ones(6)))
     when doInc: inc(i, 4)
-  elif ord(s[i]) shr 2 == 0b111110: 
+  elif ord(s[i]) shr 2 == 0b111110:
     # assert(ord(s[i+1]) shr 6 == 0b10)
     # assert(ord(s[i+2]) shr 6 == 0b10)
     # assert(ord(s[i+3]) shr 6 == 0b10)
@@ -88,7 +88,7 @@ template fastRuneAt*(s: string, i: int, result: expr, doInc = true) =
              (ord(s[i+3]) and ones(6)) shl 6 or
              (ord(s[i+4]) and ones(6)))
     when doInc: inc(i, 5)
-  elif ord(s[i]) shr 1 == 0b1111110: 
+  elif ord(s[i]) shr 1 == 0b1111110:
     # assert(ord(s[i+1]) shr 6 == 0b10)
     # assert(ord(s[i+2]) shr 6 == 0b10)
     # assert(ord(s[i+3]) shr 6 == 0b10)
@@ -105,11 +105,11 @@ template fastRuneAt*(s: string, i: int, result: expr, doInc = true) =
     result = Rune(ord(s[i]))
     when doInc: inc(i)
 
-proc runeAt*(s: string, i: int): Rune =
+proc runeAt*(s: string, i: Natural): Rune =
   ## returns the unicode character in `s` at byte index `i`
   fastRuneAt(s, i, result, false)
 
-proc toUTF8*(c: Rune): string {.rtl, extern: "nuc$1".} = 
+proc toUTF8*(c: Rune): string {.rtl, extern: "nuc$1".} =
   ## converts a rune into its UTF8 representation
   var i = RuneImpl(c)
   if i <=% 127:
@@ -159,967 +159,967 @@ proc `$`*(runes: seq[Rune]): string =
 
 const
   alphaRanges = [
-    0x00d8,  0x00f6,  #  - 
-    0x00f8,  0x01f5,  #  -    
-    0x0250,  0x02a8,  #  -    
-    0x038e,  0x03a1,  #  -    
-    0x03a3,  0x03ce,  #  -    
-    0x03d0,  0x03d6,  #  -    
-    0x03e2,  0x03f3,  #  -    
-    0x0490,  0x04c4,  #  -    
-    0x0561,  0x0587,  #  -    
-    0x05d0,  0x05ea,  #  -    
-    0x05f0,  0x05f2,  #  -    
-    0x0621,  0x063a,  #  -    
-    0x0640,  0x064a,  #  -    
-    0x0671,  0x06b7,  #  -    
-    0x06ba,  0x06be,  #  -    
-    0x06c0,  0x06ce,  #  -    
-    0x06d0,  0x06d3,  #  -    
-    0x0905,  0x0939,  #  -    
-    0x0958,  0x0961,  #  -    
-    0x0985,  0x098c,  #  -    
-    0x098f,  0x0990,  #  -    
-    0x0993,  0x09a8,  #  -    
-    0x09aa,  0x09b0,  #  -    
-    0x09b6,  0x09b9,  #  -    
-    0x09dc,  0x09dd,  #  -    
-    0x09df,  0x09e1,  #  -    
-    0x09f0,  0x09f1,  #  -    
-    0x0a05,  0x0a0a,  #  -    
-    0x0a0f,  0x0a10,  #  -    
-    0x0a13,  0x0a28,  #  -    
-    0x0a2a,  0x0a30,  #  -    
-    0x0a32,  0x0a33,  #  -    
-    0x0a35,  0x0a36,  #  -    
-    0x0a38,  0x0a39,  #  -    
-    0x0a59,  0x0a5c,  #  -    
-    0x0a85,  0x0a8b,  #  -    
-    0x0a8f,  0x0a91,  #  -    
-    0x0a93,  0x0aa8,  #  -    
-    0x0aaa,  0x0ab0,  #  -    
-    0x0ab2,  0x0ab3,  #  -    
-    0x0ab5,  0x0ab9,  #  -    
-    0x0b05,  0x0b0c,  #  -    
-    0x0b0f,  0x0b10,  #  -    
-    0x0b13,  0x0b28,  #  -    
-    0x0b2a,  0x0b30,  #  -    
-    0x0b32,  0x0b33,  #  -    
-    0x0b36,  0x0b39,  #  -    
-    0x0b5c,  0x0b5d,  #  -    
-    0x0b5f,  0x0b61,  #  -    
-    0x0b85,  0x0b8a,  #  -    
-    0x0b8e,  0x0b90,  #  -    
-    0x0b92,  0x0b95,  #  -    
-    0x0b99,  0x0b9a,  #  -    
-    0x0b9e,  0x0b9f,  #  -    
-    0x0ba3,  0x0ba4,  #  -    
-    0x0ba8,  0x0baa,  #  -    
-    0x0bae,  0x0bb5,  #  -    
-    0x0bb7,  0x0bb9,  #  -    
-    0x0c05,  0x0c0c,  #  -    
-    0x0c0e,  0x0c10,  #  -    
-    0x0c12,  0x0c28,  #  -    
-    0x0c2a,  0x0c33,  #  -    
-    0x0c35,  0x0c39,  #  -    
-    0x0c60,  0x0c61,  #  -    
-    0x0c85,  0x0c8c,  #  -    
-    0x0c8e,  0x0c90,  #  -    
-    0x0c92,  0x0ca8,  #  -    
-    0x0caa,  0x0cb3,  #  -    
-    0x0cb5,  0x0cb9,  #  -    
-    0x0ce0,  0x0ce1,  #  -    
-    0x0d05,  0x0d0c,  #  -    
-    0x0d0e,  0x0d10,  #  -    
-    0x0d12,  0x0d28,  #  -    
-    0x0d2a,  0x0d39,  #  -    
-    0x0d60,  0x0d61,  #  -    
-    0x0e01,  0x0e30,  #  -    
-    0x0e32,  0x0e33,  #  -    
-    0x0e40,  0x0e46,  #  -    
-    0x0e5a,  0x0e5b,  #  -    
-    0x0e81,  0x0e82,  #  -    
-    0x0e87,  0x0e88,  #  -    
-    0x0e94,  0x0e97,  #  -    
-    0x0e99,  0x0e9f,  #  -    
-    0x0ea1,  0x0ea3,  #  -    
-    0x0eaa,  0x0eab,  #  -    
-    0x0ead,  0x0eae,  #  -    
-    0x0eb2,  0x0eb3,  #  -    
-    0x0ec0,  0x0ec4,  #  -    
-    0x0edc,  0x0edd,  #  -    
-    0x0f18,  0x0f19,  #  -    
-    0x0f40,  0x0f47,  #  -    
-    0x0f49,  0x0f69,  #  -    
-    0x10d0,  0x10f6,  #  -    
-    0x1100,  0x1159,  #  -    
-    0x115f,  0x11a2,  #  -    
-    0x11a8,  0x11f9,  #  -    
-    0x1e00,  0x1e9b,  #  -    
-    0x1f50,  0x1f57,  #  -    
-    0x1f80,  0x1fb4,  #  -    
-    0x1fb6,  0x1fbc,  #  -    
-    0x1fc2,  0x1fc4,  #  -    
-    0x1fc6,  0x1fcc,  #  -    
-    0x1fd0,  0x1fd3,  #  -    
-    0x1fd6,  0x1fdb,  #  -    
-    0x1fe0,  0x1fec,  #  -    
-    0x1ff2,  0x1ff4,  #  -    
-    0x1ff6,  0x1ffc,  #  -    
-    0x210a,  0x2113,  #  -    
-    0x2115,  0x211d,  #  -    
-    0x2120,  0x2122,  #  -    
-    0x212a,  0x2131,  #  -    
-    0x2133,  0x2138,  #  -    
-    0x3041,  0x3094,  #  -    
-    0x30a1,  0x30fa,  #  -    
-    0x3105,  0x312c,  #  -    
-    0x3131,  0x318e,  #  -    
-    0x3192,  0x319f,  #  -    
-    0x3260,  0x327b,  #  -    
-    0x328a,  0x32b0,  #  -    
-    0x32d0,  0x32fe,  #  -    
-    0x3300,  0x3357,  #  -    
-    0x3371,  0x3376,  #  -    
-    0x337b,  0x3394,  #  -    
-    0x3399,  0x339e,  #  -    
-    0x33a9,  0x33ad,  #  -    
-    0x33b0,  0x33c1,  #  -    
-    0x33c3,  0x33c5,  #  -    
-    0x33c7,  0x33d7,  #  -    
-    0x33d9,  0x33dd,  #  -    
-    0x4e00,  0x9fff,  #  -    
-    0xac00,  0xd7a3,  #  -    
-    0xf900,  0xfb06,  #  -    
-    0xfb13,  0xfb17,  #  -    
-    0xfb1f,  0xfb28,  #  -    
-    0xfb2a,  0xfb36,  #  -    
-    0xfb38,  0xfb3c,  #  -    
-    0xfb40,  0xfb41,  #  -    
-    0xfb43,  0xfb44,  #  -    
-    0xfb46,  0xfbb1,  #  -    
-    0xfbd3,  0xfd3d,  #  -    
-    0xfd50,  0xfd8f,  #  -    
-    0xfd92,  0xfdc7,  #  -    
-    0xfdf0,  0xfdf9,  #  -    
-    0xfe70,  0xfe72,  #  -    
-    0xfe76,  0xfefc,  #  -    
-    0xff66,  0xff6f,  #  -    
-    0xff71,  0xff9d,  #  -    
-    0xffa0,  0xffbe,  #  -    
-    0xffc2,  0xffc7,  #  -    
-    0xffca,  0xffcf,  #  -    
-    0xffd2,  0xffd7,  #  -    
-    0xffda,  0xffdc]  #  -    
+    0x00d8,  0x00f6,  #  -
+    0x00f8,  0x01f5,  #  -
+    0x0250,  0x02a8,  #  -
+    0x038e,  0x03a1,  #  -
+    0x03a3,  0x03ce,  #  -
+    0x03d0,  0x03d6,  #  -
+    0x03e2,  0x03f3,  #  -
+    0x0490,  0x04c4,  #  -
+    0x0561,  0x0587,  #  -
+    0x05d0,  0x05ea,  #  -
+    0x05f0,  0x05f2,  #  -
+    0x0621,  0x063a,  #  -
+    0x0640,  0x064a,  #  -
+    0x0671,  0x06b7,  #  -
+    0x06ba,  0x06be,  #  -
+    0x06c0,  0x06ce,  #  -
+    0x06d0,  0x06d3,  #  -
+    0x0905,  0x0939,  #  -
+    0x0958,  0x0961,  #  -
+    0x0985,  0x098c,  #  -
+    0x098f,  0x0990,  #  -
+    0x0993,  0x09a8,  #  -
+    0x09aa,  0x09b0,  #  -
+    0x09b6,  0x09b9,  #  -
+    0x09dc,  0x09dd,  #  -
+    0x09df,  0x09e1,  #  -
+    0x09f0,  0x09f1,  #  -
+    0x0a05,  0x0a0a,  #  -
+    0x0a0f,  0x0a10,  #  -
+    0x0a13,  0x0a28,  #  -
+    0x0a2a,  0x0a30,  #  -
+    0x0a32,  0x0a33,  #  -
+    0x0a35,  0x0a36,  #  -
+    0x0a38,  0x0a39,  #  -
+    0x0a59,  0x0a5c,  #  -
+    0x0a85,  0x0a8b,  #  -
+    0x0a8f,  0x0a91,  #  -
+    0x0a93,  0x0aa8,  #  -
+    0x0aaa,  0x0ab0,  #  -
+    0x0ab2,  0x0ab3,  #  -
+    0x0ab5,  0x0ab9,  #  -
+    0x0b05,  0x0b0c,  #  -
+    0x0b0f,  0x0b10,  #  -
+    0x0b13,  0x0b28,  #  -
+    0x0b2a,  0x0b30,  #  -
+    0x0b32,  0x0b33,  #  -
+    0x0b36,  0x0b39,  #  -
+    0x0b5c,  0x0b5d,  #  -
+    0x0b5f,  0x0b61,  #  -
+    0x0b85,  0x0b8a,  #  -
+    0x0b8e,  0x0b90,  #  -
+    0x0b92,  0x0b95,  #  -
+    0x0b99,  0x0b9a,  #  -
+    0x0b9e,  0x0b9f,  #  -
+    0x0ba3,  0x0ba4,  #  -
+    0x0ba8,  0x0baa,  #  -
+    0x0bae,  0x0bb5,  #  -
+    0x0bb7,  0x0bb9,  #  -
+    0x0c05,  0x0c0c,  #  -
+    0x0c0e,  0x0c10,  #  -
+    0x0c12,  0x0c28,  #  -
+    0x0c2a,  0x0c33,  #  -
+    0x0c35,  0x0c39,  #  -
+    0x0c60,  0x0c61,  #  -
+    0x0c85,  0x0c8c,  #  -
+    0x0c8e,  0x0c90,  #  -
+    0x0c92,  0x0ca8,  #  -
+    0x0caa,  0x0cb3,  #  -
+    0x0cb5,  0x0cb9,  #  -
+    0x0ce0,  0x0ce1,  #  -
+    0x0d05,  0x0d0c,  #  -
+    0x0d0e,  0x0d10,  #  -
+    0x0d12,  0x0d28,  #  -
+    0x0d2a,  0x0d39,  #  -
+    0x0d60,  0x0d61,  #  -
+    0x0e01,  0x0e30,  #  -
+    0x0e32,  0x0e33,  #  -
+    0x0e40,  0x0e46,  #  -
+    0x0e5a,  0x0e5b,  #  -
+    0x0e81,  0x0e82,  #  -
+    0x0e87,  0x0e88,  #  -
+    0x0e94,  0x0e97,  #  -
+    0x0e99,  0x0e9f,  #  -
+    0x0ea1,  0x0ea3,  #  -
+    0x0eaa,  0x0eab,  #  -
+    0x0ead,  0x0eae,  #  -
+    0x0eb2,  0x0eb3,  #  -
+    0x0ec0,  0x0ec4,  #  -
+    0x0edc,  0x0edd,  #  -
+    0x0f18,  0x0f19,  #  -
+    0x0f40,  0x0f47,  #  -
+    0x0f49,  0x0f69,  #  -
+    0x10d0,  0x10f6,  #  -
+    0x1100,  0x1159,  #  -
+    0x115f,  0x11a2,  #  -
+    0x11a8,  0x11f9,  #  -
+    0x1e00,  0x1e9b,  #  -
+    0x1f50,  0x1f57,  #  -
+    0x1f80,  0x1fb4,  #  -
+    0x1fb6,  0x1fbc,  #  -
+    0x1fc2,  0x1fc4,  #  -
+    0x1fc6,  0x1fcc,  #  -
+    0x1fd0,  0x1fd3,  #  -
+    0x1fd6,  0x1fdb,  #  -
+    0x1fe0,  0x1fec,  #  -
+    0x1ff2,  0x1ff4,  #  -
+    0x1ff6,  0x1ffc,  #  -
+    0x210a,  0x2113,  #  -
+    0x2115,  0x211d,  #  -
+    0x2120,  0x2122,  #  -
+    0x212a,  0x2131,  #  -
+    0x2133,  0x2138,  #  -
+    0x3041,  0x3094,  #  -
+    0x30a1,  0x30fa,  #  -
+    0x3105,  0x312c,  #  -
+    0x3131,  0x318e,  #  -
+    0x3192,  0x319f,  #  -
+    0x3260,  0x327b,  #  -
+    0x328a,  0x32b0,  #  -
+    0x32d0,  0x32fe,  #  -
+    0x3300,  0x3357,  #  -
+    0x3371,  0x3376,  #  -
+    0x337b,  0x3394,  #  -
+    0x3399,  0x339e,  #  -
+    0x33a9,  0x33ad,  #  -
+    0x33b0,  0x33c1,  #  -
+    0x33c3,  0x33c5,  #  -
+    0x33c7,  0x33d7,  #  -
+    0x33d9,  0x33dd,  #  -
+    0x4e00,  0x9fff,  #  -
+    0xac00,  0xd7a3,  #  -
+    0xf900,  0xfb06,  #  -
+    0xfb13,  0xfb17,  #  -
+    0xfb1f,  0xfb28,  #  -
+    0xfb2a,  0xfb36,  #  -
+    0xfb38,  0xfb3c,  #  -
+    0xfb40,  0xfb41,  #  -
+    0xfb43,  0xfb44,  #  -
+    0xfb46,  0xfbb1,  #  -
+    0xfbd3,  0xfd3d,  #  -
+    0xfd50,  0xfd8f,  #  -
+    0xfd92,  0xfdc7,  #  -
+    0xfdf0,  0xfdf9,  #  -
+    0xfe70,  0xfe72,  #  -
+    0xfe76,  0xfefc,  #  -
+    0xff66,  0xff6f,  #  -
+    0xff71,  0xff9d,  #  -
+    0xffa0,  0xffbe,  #  -
+    0xffc2,  0xffc7,  #  -
+    0xffca,  0xffcf,  #  -
+    0xffd2,  0xffd7,  #  -
+    0xffda,  0xffdc]  #  -
 
   alphaSinglets = [
-    0x00aa,  #    
-    0x00b5,  #    
-    0x00ba,  #    
-    0x03da,  #    
-    0x03dc,  #    
-    0x03de,  #    
-    0x03e0,  #    
-    0x06d5,  #    
-    0x09b2,  #    
-    0x0a5e,  #    
-    0x0a8d,  #    
-    0x0ae0,  #    
-    0x0b9c,  #    
-    0x0cde,  #    
-    0x0e4f,  #    
-    0x0e84,  #    
-    0x0e8a,  #    
-    0x0e8d,  #    
-    0x0ea5,  #    
-    0x0ea7,  #    
-    0x0eb0,  #    
-    0x0ebd,  #    
-    0x1fbe,  #    
-    0x207f,  #    
-    0x20a8,  #    
-    0x2102,  #    
-    0x2107,  #    
-    0x2124,  #    
-    0x2126,  #    
-    0x2128,  #    
-    0xfb3e,  #    
-    0xfe74]  #    
+    0x00aa,  #
+    0x00b5,  #
+    0x00ba,  #
+    0x03da,  #
+    0x03dc,  #
+    0x03de,  #
+    0x03e0,  #
+    0x06d5,  #
+    0x09b2,  #
+    0x0a5e,  #
+    0x0a8d,  #
+    0x0ae0,  #
+    0x0b9c,  #
+    0x0cde,  #
+    0x0e4f,  #
+    0x0e84,  #
+    0x0e8a,  #
+    0x0e8d,  #
+    0x0ea5,  #
+    0x0ea7,  #
+    0x0eb0,  #
+    0x0ebd,  #
+    0x1fbe,  #
+    0x207f,  #
+    0x20a8,  #
+    0x2102,  #
+    0x2107,  #
+    0x2124,  #
+    0x2126,  #
+    0x2128,  #
+    0xfb3e,  #
+    0xfe74]  #
 
   spaceRanges = [
-    0x0009,  0x000a,  # tab and newline   
-    0x0020,  0x0020,  # space   
-    0x00a0,  0x00a0,  #    
-    0x2000,  0x200b,  #  -    
-    0x2028,  0x2029,  #  -     0x3000,  0x3000,  #    
-    0xfeff,  0xfeff]  #    
+    0x0009,  0x000a,  # tab and newline
+    0x0020,  0x0020,  # space
+    0x00a0,  0x00a0,  #
+    0x2000,  0x200b,  #  -
+    0x2028,  0x2029,  #  -     0x3000,  0x3000,  #
+    0xfeff,  0xfeff]  #
 
   toupperRanges = [
-    0x0061,  0x007a, 468,  # a-z A-Z   
-    0x00e0,  0x00f6, 468,  # - -   
-    0x00f8,  0x00fe, 468,  # - -   
-    0x0256,  0x0257, 295,  # - -   
-    0x0258,  0x0259, 298,  # - -   
-    0x028a,  0x028b, 283,  # - -   
-    0x03ad,  0x03af, 463,  # - -   
-    0x03b1,  0x03c1, 468,  # - -   
-    0x03c3,  0x03cb, 468,  # - -   
-    0x03cd,  0x03ce, 437,  # - -   
-    0x0430,  0x044f, 468,  # - -   
-    0x0451,  0x045c, 420,  # - -   
-    0x045e,  0x045f, 420,  # - -   
-    0x0561,  0x0586, 452,  # - -   
-    0x1f00,  0x1f07, 508,  # - -   
-    0x1f10,  0x1f15, 508,  # - -   
-    0x1f20,  0x1f27, 508,  # - -   
-    0x1f30,  0x1f37, 508,  # - -   
-    0x1f40,  0x1f45, 508,  # - -   
-    0x1f60,  0x1f67, 508,  # - -   
-    0x1f70,  0x1f71, 574,  # - -   
-    0x1f72,  0x1f75, 586,  # - -   
-    0x1f76,  0x1f77, 600,  # - -   
-    0x1f78,  0x1f79, 628,  # - -   
-    0x1f7a,  0x1f7b, 612,  # - -   
-    0x1f7c,  0x1f7d, 626,  # - -   
-    0x1f80,  0x1f87, 508,  # - -   
-    0x1f90,  0x1f97, 508,  # - -   
-    0x1fa0,  0x1fa7, 508,  # - -   
-    0x1fb0,  0x1fb1, 508,  # - -   
-    0x1fd0,  0x1fd1, 508,  # - -   
-    0x1fe0,  0x1fe1, 508,  # - -   
-    0x2170,  0x217f, 484,  # - -   
-    0x24d0,  0x24e9, 474,  # - -   
-    0xff41,  0xff5a, 468]  # - -   
+    0x0061,  0x007a, 468,  # a-z A-Z
+    0x00e0,  0x00f6, 468,  # - -
+    0x00f8,  0x00fe, 468,  # - -
+    0x0256,  0x0257, 295,  # - -
+    0x0258,  0x0259, 298,  # - -
+    0x028a,  0x028b, 283,  # - -
+    0x03ad,  0x03af, 463,  # - -
+    0x03b1,  0x03c1, 468,  # - -
+    0x03c3,  0x03cb, 468,  # - -
+    0x03cd,  0x03ce, 437,  # - -
+    0x0430,  0x044f, 468,  # - -
+    0x0451,  0x045c, 420,  # - -
+    0x045e,  0x045f, 420,  # - -
+    0x0561,  0x0586, 452,  # - -
+    0x1f00,  0x1f07, 508,  # - -
+    0x1f10,  0x1f15, 508,  # - -
+    0x1f20,  0x1f27, 508,  # - -
+    0x1f30,  0x1f37, 508,  # - -
+    0x1f40,  0x1f45, 508,  # - -
+    0x1f60,  0x1f67, 508,  # - -
+    0x1f70,  0x1f71, 574,  # - -
+    0x1f72,  0x1f75, 586,  # - -
+    0x1f76,  0x1f77, 600,  # - -
+    0x1f78,  0x1f79, 628,  # - -
+    0x1f7a,  0x1f7b, 612,  # - -
+    0x1f7c,  0x1f7d, 626,  # - -
+    0x1f80,  0x1f87, 508,  # - -
+    0x1f90,  0x1f97, 508,  # - -
+    0x1fa0,  0x1fa7, 508,  # - -
+    0x1fb0,  0x1fb1, 508,  # - -
+    0x1fd0,  0x1fd1, 508,  # - -
+    0x1fe0,  0x1fe1, 508,  # - -
+    0x2170,  0x217f, 484,  # - -
+    0x24d0,  0x24e9, 474,  # - -
+    0xff41,  0xff5a, 468]  # - -
 
   toupperSinglets = [
-    0x00ff, 621,  #     
-    0x0101, 499,  #     
-    0x0103, 499,  #     
-    0x0105, 499,  #     
-    0x0107, 499,  #     
-    0x0109, 499,  #     
-    0x010b, 499,  #     
-    0x010d, 499,  #     
-    0x010f, 499,  #     
-    0x0111, 499,  #     
-    0x0113, 499,  #     
-    0x0115, 499,  #     
-    0x0117, 499,  #     
-    0x0119, 499,  #     
-    0x011b, 499,  #     
-    0x011d, 499,  #     
-    0x011f, 499,  #     
-    0x0121, 499,  #     
-    0x0123, 499,  #     
-    0x0125, 499,  #     
-    0x0127, 499,  #     
-    0x0129, 499,  #     
-    0x012b, 499,  #     
-    0x012d, 499,  #     
-    0x012f, 499,  #     
-    0x0131, 268,  #  I   
-    0x0133, 499,  #     
-    0x0135, 499,  #     
-    0x0137, 499,  #     
-    0x013a, 499,  #     
-    0x013c, 499,  #     
-    0x013e, 499,  #     
-    0x0140, 499,  #     
-    0x0142, 499,  #     
-    0x0144, 499,  #     
-    0x0146, 499,  #     
-    0x0148, 499,  #     
-    0x014b, 499,  #     
-    0x014d, 499,  #     
-    0x014f, 499,  #     
-    0x0151, 499,  #     
-    0x0153, 499,  #     
-    0x0155, 499,  #     
-    0x0157, 499,  #     
-    0x0159, 499,  #     
-    0x015b, 499,  #     
-    0x015d, 499,  #     
-    0x015f, 499,  #     
-    0x0161, 499,  #     
-    0x0163, 499,  #     
-    0x0165, 499,  #     
-    0x0167, 499,  #     
-    0x0169, 499,  #     
-    0x016b, 499,  #     
-    0x016d, 499,  #     
-    0x016f, 499,  #     
-    0x0171, 499,  #     
-    0x0173, 499,  #     
-    0x0175, 499,  #     
-    0x0177, 499,  #     
-    0x017a, 499,  #     
-    0x017c, 499,  #     
-    0x017e, 499,  #     
-    0x017f, 200,  #  S   
-    0x0183, 499,  #     
-    0x0185, 499,  #     
-    0x0188, 499,  #     
-    0x018c, 499,  #     
-    0x0192, 499,  #     
-    0x0199, 499,  #     
-    0x01a1, 499,  #     
-    0x01a3, 499,  #     
-    0x01a5, 499,  #     
-    0x01a8, 499,  #     
-    0x01ad, 499,  #     
-    0x01b0, 499,  #     
-    0x01b4, 499,  #     
-    0x01b6, 499,  #     
-    0x01b9, 499,  #     
-    0x01bd, 499,  #     
-    0x01c5, 499,  #     
-    0x01c6, 498,  #     
-    0x01c8, 499,  #     
-    0x01c9, 498,  #     
-    0x01cb, 499,  #     
-    0x01cc, 498,  #     
-    0x01ce, 499,  #     
-    0x01d0, 499,  #     
-    0x01d2, 499,  #     
-    0x01d4, 499,  #     
-    0x01d6, 499,  #     
-    0x01d8, 499,  #     
-    0x01da, 499,  #     
-    0x01dc, 499,  #     
-    0x01df, 499,  #     
-    0x01e1, 499,  #     
-    0x01e3, 499,  #     
-    0x01e5, 499,  #     
-    0x01e7, 499,  #     
-    0x01e9, 499,  #     
-    0x01eb, 499,  #     
-    0x01ed, 499,  #     
-    0x01ef, 499,  #     
-    0x01f2, 499,  #     
-    0x01f3, 498,  #     
-    0x01f5, 499,  #     
-    0x01fb, 499,  #     
-    0x01fd, 499,  #     
-    0x01ff, 499,  #     
-    0x0201, 499,  #     
-    0x0203, 499,  #     
-    0x0205, 499,  #     
-    0x0207, 499,  #     
-    0x0209, 499,  #     
-    0x020b, 499,  #     
-    0x020d, 499,  #     
-    0x020f, 499,  #     
-    0x0211, 499,  #     
-    0x0213, 499,  #     
-    0x0215, 499,  #     
-    0x0217, 499,  #     
-    0x0253, 290,  #     
-    0x0254, 294,  #     
-    0x025b, 297,  #     
-    0x0260, 295,  #     
-    0x0263, 293,  #     
-    0x0268, 291,  #     
-    0x0269, 289,  #     
-    0x026f, 289,  #     
-    0x0272, 287,  #     
-    0x0283, 282,  #     
-    0x0288, 282,  #     
-    0x0292, 281,  #     
-    0x03ac, 462,  #     
-    0x03cc, 436,  #     
-    0x03d0, 438,  #     
-    0x03d1, 443,  #     
-    0x03d5, 453,  #     
-    0x03d6, 446,  #     
-    0x03e3, 499,  #     
-    0x03e5, 499,  #     
-    0x03e7, 499,  #     
-    0x03e9, 499,  #     
-    0x03eb, 499,  #     
-    0x03ed, 499,  #     
-    0x03ef, 499,  #     
-    0x03f0, 414,  #     
-    0x03f1, 420,  #     
-    0x0461, 499,  #     
-    0x0463, 499,  #     
-    0x0465, 499,  #     
-    0x0467, 499,  #     
-    0x0469, 499,  #     
-    0x046b, 499,  #     
-    0x046d, 499,  #     
-    0x046f, 499,  #     
-    0x0471, 499,  #     
-    0x0473, 499,  #     
-    0x0475, 499,  #     
-    0x0477, 499,  #     
-    0x0479, 499,  #     
-    0x047b, 499,  #     
-    0x047d, 499,  #     
-    0x047f, 499,  #     
-    0x0481, 499,  #     
-    0x0491, 499,  #     
-    0x0493, 499,  #     
-    0x0495, 499,  #     
-    0x0497, 499,  #     
-    0x0499, 499,  #     
-    0x049b, 499,  #     
-    0x049d, 499,  #     
-    0x049f, 499,  #     
-    0x04a1, 499,  #     
-    0x04a3, 499,  #     
-    0x04a5, 499,  #     
-    0x04a7, 499,  #     
-    0x04a9, 499,  #     
-    0x04ab, 499,  #     
-    0x04ad, 499,  #     
-    0x04af, 499,  #     
-    0x04b1, 499,  #     
-    0x04b3, 499,  #     
-    0x04b5, 499,  #     
-    0x04b7, 499,  #     
-    0x04b9, 499,  #     
-    0x04bb, 499,  #     
-    0x04bd, 499,  #     
-    0x04bf, 499,  #     
-    0x04c2, 499,  #     
-    0x04c4, 499,  #     
-    0x04c8, 499,  #     
-    0x04cc, 499,  #     
-    0x04d1, 499,  #     
-    0x04d3, 499,  #     
-    0x04d5, 499,  #     
-    0x04d7, 499,  #     
-    0x04d9, 499,  #     
-    0x04db, 499,  #     
-    0x04dd, 499,  #     
-    0x04df, 499,  #     
-    0x04e1, 499,  #     
-    0x04e3, 499,  #     
-    0x04e5, 499,  #     
-    0x04e7, 499,  #     
-    0x04e9, 499,  #     
-    0x04eb, 499,  #     
-    0x04ef, 499,  #     
-    0x04f1, 499,  #     
-    0x04f3, 499,  #     
-    0x04f5, 499,  #     
-    0x04f9, 499,  #     
-    0x1e01, 499,  #     
-    0x1e03, 499,  #     
-    0x1e05, 499,  #     
-    0x1e07, 499,  #     
-    0x1e09, 499,  #     
-    0x1e0b, 499,  #     
-    0x1e0d, 499,  #     
-    0x1e0f, 499,  #     
-    0x1e11, 499,  #     
-    0x1e13, 499,  #     
-    0x1e15, 499,  #     
-    0x1e17, 499,  #     
-    0x1e19, 499,  #     
-    0x1e1b, 499,  #     
-    0x1e1d, 499,  #     
-    0x1e1f, 499,  #     
-    0x1e21, 499,  #     
-    0x1e23, 499,  #     
-    0x1e25, 499,  #     
-    0x1e27, 499,  #     
-    0x1e29, 499,  #     
-    0x1e2b, 499,  #     
-    0x1e2d, 499,  #     
-    0x1e2f, 499,  #     
-    0x1e31, 499,  #     
-    0x1e33, 499,  #     
-    0x1e35, 499,  #     
-    0x1e37, 499,  #     
-    0x1e39, 499,  #     
-    0x1e3b, 499,  #     
-    0x1e3d, 499,  #     
-    0x1e3f, 499,  #     
-    0x1e41, 499,  #     
-    0x1e43, 499,  #     
-    0x1e45, 499,  #     
-    0x1e47, 499,  #     
-    0x1e49, 499,  #     
-    0x1e4b, 499,  #     
-    0x1e4d, 499,  #     
-    0x1e4f, 499,  #     
-    0x1e51, 499,  #     
-    0x1e53, 499,  #     
-    0x1e55, 499,  #     
-    0x1e57, 499,  #     
-    0x1e59, 499,  #     
-    0x1e5b, 499,  #     
-    0x1e5d, 499,  #     
-    0x1e5f, 499,  #     
-    0x1e61, 499,  #     
-    0x1e63, 499,  #     
-    0x1e65, 499,  #     
-    0x1e67, 499,  #     
-    0x1e69, 499,  #     
-    0x1e6b, 499,  #     
-    0x1e6d, 499,  #     
-    0x1e6f, 499,  #     
-    0x1e71, 499,  #     
-    0x1e73, 499,  #     
-    0x1e75, 499,  #     
-    0x1e77, 499,  #     
-    0x1e79, 499,  #     
-    0x1e7b, 499,  #     
-    0x1e7d, 499,  #     
-    0x1e7f, 499,  #     
-    0x1e81, 499,  #     
-    0x1e83, 499,  #     
-    0x1e85, 499,  #     
-    0x1e87, 499,  #     
-    0x1e89, 499,  #     
-    0x1e8b, 499,  #     
-    0x1e8d, 499,  #     
-    0x1e8f, 499,  #     
-    0x1e91, 499,  #     
-    0x1e93, 499,  #     
-    0x1e95, 499,  #     
-    0x1ea1, 499,  #     
-    0x1ea3, 499,  #     
-    0x1ea5, 499,  #     
-    0x1ea7, 499,  #     
-    0x1ea9, 499,  #     
-    0x1eab, 499,  #     
-    0x1ead, 499,  #     
-    0x1eaf, 499,  #     
-    0x1eb1, 499,  #     
-    0x1eb3, 499,  #     
-    0x1eb5, 499,  #     
-    0x1eb7, 499,  #     
-    0x1eb9, 499,  #     
-    0x1ebb, 499,  #     
-    0x1ebd, 499,  #     
-    0x1ebf, 499,  #     
-    0x1ec1, 499,  #     
-    0x1ec3, 499,  #     
-    0x1ec5, 499,  #     
-    0x1ec7, 499,  #     
-    0x1ec9, 499,  #     
-    0x1ecb, 499,  #     
-    0x1ecd, 499,  #     
-    0x1ecf, 499,  #     
-    0x1ed1, 499,  #     
-    0x1ed3, 499,  #     
-    0x1ed5, 499,  #     
-    0x1ed7, 499,  #     
-    0x1ed9, 499,  #     
-    0x1edb, 499,  #     
-    0x1edd, 499,  #     
-    0x1edf, 499,  #     
-    0x1ee1, 499,  #     
-    0x1ee3, 499,  #     
-    0x1ee5, 499,  #     
-    0x1ee7, 499,  #     
-    0x1ee9, 499,  #     
-    0x1eeb, 499,  #     
-    0x1eed, 499,  #     
-    0x1eef, 499,  #     
-    0x1ef1, 499,  #     
-    0x1ef3, 499,  #     
-    0x1ef5, 499,  #     
-    0x1ef7, 499,  #     
-    0x1ef9, 499,  #     
-    0x1f51, 508,  #     
-    0x1f53, 508,  #     
-    0x1f55, 508,  #     
-    0x1f57, 508,  #     
-    0x1fb3, 509,  #     
-    0x1fc3, 509,  #     
-    0x1fe5, 507,  #     
-    0x1ff3, 509]  #     
+    0x00ff, 621,  #
+    0x0101, 499,  #
+    0x0103, 499,  #
+    0x0105, 499,  #
+    0x0107, 499,  #
+    0x0109, 499,  #
+    0x010b, 499,  #
+    0x010d, 499,  #
+    0x010f, 499,  #
+    0x0111, 499,  #
+    0x0113, 499,  #
+    0x0115, 499,  #
+    0x0117, 499,  #
+    0x0119, 499,  #
+    0x011b, 499,  #
+    0x011d, 499,  #
+    0x011f, 499,  #
+    0x0121, 499,  #
+    0x0123, 499,  #
+    0x0125, 499,  #
+    0x0127, 499,  #
+    0x0129, 499,  #
+    0x012b, 499,  #
+    0x012d, 499,  #
+    0x012f, 499,  #
+    0x0131, 268,  #  I
+    0x0133, 499,  #
+    0x0135, 499,  #
+    0x0137, 499,  #
+    0x013a, 499,  #
+    0x013c, 499,  #
+    0x013e, 499,  #
+    0x0140, 499,  #
+    0x0142, 499,  #
+    0x0144, 499,  #
+    0x0146, 499,  #
+    0x0148, 499,  #
+    0x014b, 499,  #
+    0x014d, 499,  #
+    0x014f, 499,  #
+    0x0151, 499,  #
+    0x0153, 499,  #
+    0x0155, 499,  #
+    0x0157, 499,  #
+    0x0159, 499,  #
+    0x015b, 499,  #
+    0x015d, 499,  #
+    0x015f, 499,  #
+    0x0161, 499,  #
+    0x0163, 499,  #
+    0x0165, 499,  #
+    0x0167, 499,  #
+    0x0169, 499,  #
+    0x016b, 499,  #
+    0x016d, 499,  #
+    0x016f, 499,  #
+    0x0171, 499,  #
+    0x0173, 499,  #
+    0x0175, 499,  #
+    0x0177, 499,  #
+    0x017a, 499,  #
+    0x017c, 499,  #
+    0x017e, 499,  #
+    0x017f, 200,  #  S
+    0x0183, 499,  #
+    0x0185, 499,  #
+    0x0188, 499,  #
+    0x018c, 499,  #
+    0x0192, 499,  #
+    0x0199, 499,  #
+    0x01a1, 499,  #
+    0x01a3, 499,  #
+    0x01a5, 499,  #
+    0x01a8, 499,  #
+    0x01ad, 499,  #
+    0x01b0, 499,  #
+    0x01b4, 499,  #
+    0x01b6, 499,  #
+    0x01b9, 499,  #
+    0x01bd, 499,  #
+    0x01c5, 499,  #
+    0x01c6, 498,  #
+    0x01c8, 499,  #
+    0x01c9, 498,  #
+    0x01cb, 499,  #
+    0x01cc, 498,  #
+    0x01ce, 499,  #
+    0x01d0, 499,  #
+    0x01d2, 499,  #
+    0x01d4, 499,  #
+    0x01d6, 499,  #
+    0x01d8, 499,  #
+    0x01da, 499,  #
+    0x01dc, 499,  #
+    0x01df, 499,  #
+    0x01e1, 499,  #
+    0x01e3, 499,  #
+    0x01e5, 499,  #
+    0x01e7, 499,  #
+    0x01e9, 499,  #
+    0x01eb, 499,  #
+    0x01ed, 499,  #
+    0x01ef, 499,  #
+    0x01f2, 499,  #
+    0x01f3, 498,  #
+    0x01f5, 499,  #
+    0x01fb, 499,  #
+    0x01fd, 499,  #
+    0x01ff, 499,  #
+    0x0201, 499,  #
+    0x0203, 499,  #
+    0x0205, 499,  #
+    0x0207, 499,  #
+    0x0209, 499,  #
+    0x020b, 499,  #
+    0x020d, 499,  #
+    0x020f, 499,  #
+    0x0211, 499,  #
+    0x0213, 499,  #
+    0x0215, 499,  #
+    0x0217, 499,  #
+    0x0253, 290,  #
+    0x0254, 294,  #
+    0x025b, 297,  #
+    0x0260, 295,  #
+    0x0263, 293,  #
+    0x0268, 291,  #
+    0x0269, 289,  #
+    0x026f, 289,  #
+    0x0272, 287,  #
+    0x0283, 282,  #
+    0x0288, 282,  #
+    0x0292, 281,  #
+    0x03ac, 462,  #
+    0x03cc, 436,  #
+    0x03d0, 438,  #
+    0x03d1, 443,  #
+    0x03d5, 453,  #
+    0x03d6, 446,  #
+    0x03e3, 499,  #
+    0x03e5, 499,  #
+    0x03e7, 499,  #
+    0x03e9, 499,  #
+    0x03eb, 499,  #
+    0x03ed, 499,  #
+    0x03ef, 499,  #
+    0x03f0, 414,  #
+    0x03f1, 420,  #
+    0x0461, 499,  #
+    0x0463, 499,  #
+    0x0465, 499,  #
+    0x0467, 499,  #
+    0x0469, 499,  #
+    0x046b, 499,  #
+    0x046d, 499,  #
+    0x046f, 499,  #
+    0x0471, 499,  #
+    0x0473, 499,  #
+    0x0475, 499,  #
+    0x0477, 499,  #
+    0x0479, 499,  #
+    0x047b, 499,  #
+    0x047d, 499,  #
+    0x047f, 499,  #
+    0x0481, 499,  #
+    0x0491, 499,  #
+    0x0493, 499,  #
+    0x0495, 499,  #
+    0x0497, 499,  #
+    0x0499, 499,  #
+    0x049b, 499,  #
+    0x049d, 499,  #
+    0x049f, 499,  #
+    0x04a1, 499,  #
+    0x04a3, 499,  #
+    0x04a5, 499,  #
+    0x04a7, 499,  #
+    0x04a9, 499,  #
+    0x04ab, 499,  #
+    0x04ad, 499,  #
+    0x04af, 499,  #
+    0x04b1, 499,  #
+    0x04b3, 499,  #
+    0x04b5, 499,  #
+    0x04b7, 499,  #
+    0x04b9, 499,  #
+    0x04bb, 499,  #
+    0x04bd, 499,  #
+    0x04bf, 499,  #
+    0x04c2, 499,  #
+    0x04c4, 499,  #
+    0x04c8, 499,  #
+    0x04cc, 499,  #
+    0x04d1, 499,  #
+    0x04d3, 499,  #
+    0x04d5, 499,  #
+    0x04d7, 499,  #
+    0x04d9, 499,  #
+    0x04db, 499,  #
+    0x04dd, 499,  #
+    0x04df, 499,  #
+    0x04e1, 499,  #
+    0x04e3, 499,  #
+    0x04e5, 499,  #
+    0x04e7, 499,  #
+    0x04e9, 499,  #
+    0x04eb, 499,  #
+    0x04ef, 499,  #
+    0x04f1, 499,  #
+    0x04f3, 499,  #
+    0x04f5, 499,  #
+    0x04f9, 499,  #
+    0x1e01, 499,  #
+    0x1e03, 499,  #
+    0x1e05, 499,  #
+    0x1e07, 499,  #
+    0x1e09, 499,  #
+    0x1e0b, 499,  #
+    0x1e0d, 499,  #
+    0x1e0f, 499,  #
+    0x1e11, 499,  #
+    0x1e13, 499,  #
+    0x1e15, 499,  #
+    0x1e17, 499,  #
+    0x1e19, 499,  #
+    0x1e1b, 499,  #
+    0x1e1d, 499,  #
+    0x1e1f, 499,  #
+    0x1e21, 499,  #
+    0x1e23, 499,  #
+    0x1e25, 499,  #
+    0x1e27, 499,  #
+    0x1e29, 499,  #
+    0x1e2b, 499,  #
+    0x1e2d, 499,  #
+    0x1e2f, 499,  #
+    0x1e31, 499,  #
+    0x1e33, 499,  #
+    0x1e35, 499,  #
+    0x1e37, 499,  #
+    0x1e39, 499,  #
+    0x1e3b, 499,  #
+    0x1e3d, 499,  #
+    0x1e3f, 499,  #
+    0x1e41, 499,  #
+    0x1e43, 499,  #
+    0x1e45, 499,  #
+    0x1e47, 499,  #
+    0x1e49, 499,  #
+    0x1e4b, 499,  #
+    0x1e4d, 499,  #
+    0x1e4f, 499,  #
+    0x1e51, 499,  #
+    0x1e53, 499,  #
+    0x1e55, 499,  #
+    0x1e57, 499,  #
+    0x1e59, 499,  #
+    0x1e5b, 499,  #
+    0x1e5d, 499,  #
+    0x1e5f, 499,  #
+    0x1e61, 499,  #
+    0x1e63, 499,  #
+    0x1e65, 499,  #
+    0x1e67, 499,  #
+    0x1e69, 499,  #
+    0x1e6b, 499,  #
+    0x1e6d, 499,  #
+    0x1e6f, 499,  #
+    0x1e71, 499,  #
+    0x1e73, 499,  #
+    0x1e75, 499,  #
+    0x1e77, 499,  #
+    0x1e79, 499,  #
+    0x1e7b, 499,  #
+    0x1e7d, 499,  #
+    0x1e7f, 499,  #
+    0x1e81, 499,  #
+    0x1e83, 499,  #
+    0x1e85, 499,  #
+    0x1e87, 499,  #
+    0x1e89, 499,  #
+    0x1e8b, 499,  #
+    0x1e8d, 499,  #
+    0x1e8f, 499,  #
+    0x1e91, 499,  #
+    0x1e93, 499,  #
+    0x1e95, 499,  #
+    0x1ea1, 499,  #
+    0x1ea3, 499,  #
+    0x1ea5, 499,  #
+    0x1ea7, 499,  #
+    0x1ea9, 499,  #
+    0x1eab, 499,  #
+    0x1ead, 499,  #
+    0x1eaf, 499,  #
+    0x1eb1, 499,  #
+    0x1eb3, 499,  #
+    0x1eb5, 499,  #
+    0x1eb7, 499,  #
+    0x1eb9, 499,  #
+    0x1ebb, 499,  #
+    0x1ebd, 499,  #
+    0x1ebf, 499,  #
+    0x1ec1, 499,  #
+    0x1ec3, 499,  #
+    0x1ec5, 499,  #
+    0x1ec7, 499,  #
+    0x1ec9, 499,  #
+    0x1ecb, 499,  #
+    0x1ecd, 499,  #
+    0x1ecf, 499,  #
+    0x1ed1, 499,  #
+    0x1ed3, 499,  #
+    0x1ed5, 499,  #
+    0x1ed7, 499,  #
+    0x1ed9, 499,  #
+    0x1edb, 499,  #
+    0x1edd, 499,  #
+    0x1edf, 499,  #
+    0x1ee1, 499,  #
+    0x1ee3, 499,  #
+    0x1ee5, 499,  #
+    0x1ee7, 499,  #
+    0x1ee9, 499,  #
+    0x1eeb, 499,  #
+    0x1eed, 499,  #
+    0x1eef, 499,  #
+    0x1ef1, 499,  #
+    0x1ef3, 499,  #
+    0x1ef5, 499,  #
+    0x1ef7, 499,  #
+    0x1ef9, 499,  #
+    0x1f51, 508,  #
+    0x1f53, 508,  #
+    0x1f55, 508,  #
+    0x1f57, 508,  #
+    0x1fb3, 509,  #
+    0x1fc3, 509,  #
+    0x1fe5, 507,  #
+    0x1ff3, 509]  #
 
   tolowerRanges = [
     0x0041,  0x005a, 532,  # A-Z a-z
-    0x00c0,  0x00d6, 532,  # - -   
-    0x00d8,  0x00de, 532,  # - -   
-    0x0189,  0x018a, 705,  # - -   
-    0x018e,  0x018f, 702,  # - -   
-    0x01b1,  0x01b2, 717,  # - -   
-    0x0388,  0x038a, 537,  # - -   
-    0x038e,  0x038f, 563,  # - -   
-    0x0391,  0x03a1, 532,  # - -   
-    0x03a3,  0x03ab, 532,  # - -   
-    0x0401,  0x040c, 580,  # - -   
-    0x040e,  0x040f, 580,  # - -   
-    0x0410,  0x042f, 532,  # - -   
-    0x0531,  0x0556, 548,  # - -   
-    0x10a0,  0x10c5, 548,  # - -   
-    0x1f08,  0x1f0f, 492,  # - -   
-    0x1f18,  0x1f1d, 492,  # - -   
-    0x1f28,  0x1f2f, 492,  # - -   
-    0x1f38,  0x1f3f, 492,  # - -   
-    0x1f48,  0x1f4d, 492,  # - -   
-    0x1f68,  0x1f6f, 492,  # - -   
-    0x1f88,  0x1f8f, 492,  # - -   
-    0x1f98,  0x1f9f, 492,  # - -   
-    0x1fa8,  0x1faf, 492,  # - -   
-    0x1fb8,  0x1fb9, 492,  # - -   
-    0x1fba,  0x1fbb, 426,  # - -   
-    0x1fc8,  0x1fcb, 414,  # - -   
-    0x1fd8,  0x1fd9, 492,  # - -   
-    0x1fda,  0x1fdb, 400,  # - -   
-    0x1fe8,  0x1fe9, 492,  # - -   
-    0x1fea,  0x1feb, 388,  # - -   
-    0x1ff8,  0x1ff9, 372,  # - -   
-    0x1ffa,  0x1ffb, 374,  # - -   
-    0x2160,  0x216f, 516,  # - -   
-    0x24b6,  0x24cf, 526,  # - -   
-    0xff21,  0xff3a, 532]  # - -   
+    0x00c0,  0x00d6, 532,  # - -
+    0x00d8,  0x00de, 532,  # - -
+    0x0189,  0x018a, 705,  # - -
+    0x018e,  0x018f, 702,  # - -
+    0x01b1,  0x01b2, 717,  # - -
+    0x0388,  0x038a, 537,  # - -
+    0x038e,  0x038f, 563,  # - -
+    0x0391,  0x03a1, 532,  # - -
+    0x03a3,  0x03ab, 532,  # - -
+    0x0401,  0x040c, 580,  # - -
+    0x040e,  0x040f, 580,  # - -
+    0x0410,  0x042f, 532,  # - -
+    0x0531,  0x0556, 548,  # - -
+    0x10a0,  0x10c5, 548,  # - -
+    0x1f08,  0x1f0f, 492,  # - -
+    0x1f18,  0x1f1d, 492,  # - -
+    0x1f28,  0x1f2f, 492,  # - -
+    0x1f38,  0x1f3f, 492,  # - -
+    0x1f48,  0x1f4d, 492,  # - -
+    0x1f68,  0x1f6f, 492,  # - -
+    0x1f88,  0x1f8f, 492,  # - -
+    0x1f98,  0x1f9f, 492,  # - -
+    0x1fa8,  0x1faf, 492,  # - -
+    0x1fb8,  0x1fb9, 492,  # - -
+    0x1fba,  0x1fbb, 426,  # - -
+    0x1fc8,  0x1fcb, 414,  # - -
+    0x1fd8,  0x1fd9, 492,  # - -
+    0x1fda,  0x1fdb, 400,  # - -
+    0x1fe8,  0x1fe9, 492,  # - -
+    0x1fea,  0x1feb, 388,  # - -
+    0x1ff8,  0x1ff9, 372,  # - -
+    0x1ffa,  0x1ffb, 374,  # - -
+    0x2160,  0x216f, 516,  # - -
+    0x24b6,  0x24cf, 526,  # - -
+    0xff21,  0xff3a, 532]  # - -
 
   tolowerSinglets = [
-    0x0100, 501,  #     
-    0x0102, 501,  #     
-    0x0104, 501,  #     
-    0x0106, 501,  #     
-    0x0108, 501,  #     
-    0x010a, 501,  #     
-    0x010c, 501,  #     
-    0x010e, 501,  #     
-    0x0110, 501,  #     
-    0x0112, 501,  #     
-    0x0114, 501,  #     
-    0x0116, 501,  #     
-    0x0118, 501,  #     
-    0x011a, 501,  #     
-    0x011c, 501,  #     
-    0x011e, 501,  #     
-    0x0120, 501,  #     
-    0x0122, 501,  #     
-    0x0124, 501,  #     
-    0x0126, 501,  #     
-    0x0128, 501,  #     
-    0x012a, 501,  #     
-    0x012c, 501,  #     
-    0x012e, 501,  #     
-    0x0130, 301,  #  i   
-    0x0132, 501,  #     
-    0x0134, 501,  #     
-    0x0136, 501,  #     
-    0x0139, 501,  #     
-    0x013b, 501,  #     
-    0x013d, 501,  #     
-    0x013f, 501,  #     
-    0x0141, 501,  #     
-    0x0143, 501,  #     
-    0x0145, 501,  #     
-    0x0147, 501,  #     
-    0x014a, 501,  #     
-    0x014c, 501,  #     
-    0x014e, 501,  #     
-    0x0150, 501,  #     
-    0x0152, 501,  #     
-    0x0154, 501,  #     
-    0x0156, 501,  #     
-    0x0158, 501,  #     
-    0x015a, 501,  #     
-    0x015c, 501,  #     
-    0x015e, 501,  #     
-    0x0160, 501,  #     
-    0x0162, 501,  #     
-    0x0164, 501,  #     
-    0x0166, 501,  #     
-    0x0168, 501,  #     
-    0x016a, 501,  #     
-    0x016c, 501,  #     
-    0x016e, 501,  #     
-    0x0170, 501,  #     
-    0x0172, 501,  #     
-    0x0174, 501,  #     
-    0x0176, 501,  #     
-    0x0178, 379,  #     
-    0x0179, 501,  #     
-    0x017b, 501,  #     
-    0x017d, 501,  #     
-    0x0181, 710,  #     
-    0x0182, 501,  #     
-    0x0184, 501,  #     
-    0x0186, 706,  #     
-    0x0187, 501,  #     
-    0x018b, 501,  #     
-    0x0190, 703,  #     
-    0x0191, 501,  #     
-    0x0193, 705,  #     
-    0x0194, 707,  #     
-    0x0196, 711,  #     
-    0x0197, 709,  #     
-    0x0198, 501,  #     
-    0x019c, 711,  #     
-    0x019d, 713,  #     
-    0x01a0, 501,  #     
-    0x01a2, 501,  #     
-    0x01a4, 501,  #     
-    0x01a7, 501,  #     
-    0x01a9, 718,  #     
-    0x01ac, 501,  #     
-    0x01ae, 718,  #     
-    0x01af, 501,  #     
-    0x01b3, 501,  #     
-    0x01b5, 501,  #     
-    0x01b7, 719,  #     
-    0x01b8, 501,  #     
-    0x01bc, 501,  #     
-    0x01c4, 502,  #     
-    0x01c5, 501,  #     
-    0x01c7, 502,  #     
-    0x01c8, 501,  #     
-    0x01ca, 502,  #     
-    0x01cb, 501,  #     
-    0x01cd, 501,  #     
-    0x01cf, 501,  #     
-    0x01d1, 501,  #     
-    0x01d3, 501,  #     
-    0x01d5, 501,  #     
-    0x01d7, 501,  #     
-    0x01d9, 501,  #     
-    0x01db, 501,  #     
-    0x01de, 501,  #     
-    0x01e0, 501,  #     
-    0x01e2, 501,  #     
-    0x01e4, 501,  #     
-    0x01e6, 501,  #     
-    0x01e8, 501,  #     
-    0x01ea, 501,  #     
-    0x01ec, 501,  #     
-    0x01ee, 501,  #     
-    0x01f1, 502,  #     
-    0x01f2, 501,  #     
-    0x01f4, 501,  #     
-    0x01fa, 501,  #     
-    0x01fc, 501,  #     
-    0x01fe, 501,  #     
-    0x0200, 501,  #     
-    0x0202, 501,  #     
-    0x0204, 501,  #     
-    0x0206, 501,  #     
-    0x0208, 501,  #     
-    0x020a, 501,  #     
-    0x020c, 501,  #     
-    0x020e, 501,  #     
-    0x0210, 501,  #     
-    0x0212, 501,  #     
-    0x0214, 501,  #     
-    0x0216, 501,  #     
-    0x0386, 538,  #     
-    0x038c, 564,  #     
-    0x03e2, 501,  #     
-    0x03e4, 501,  #     
-    0x03e6, 501,  #     
-    0x03e8, 501,  #     
-    0x03ea, 501,  #     
-    0x03ec, 501,  #     
-    0x03ee, 501,  #     
-    0x0460, 501,  #     
-    0x0462, 501,  #     
-    0x0464, 501,  #     
-    0x0466, 501,  #     
-    0x0468, 501,  #     
-    0x046a, 501,  #     
-    0x046c, 501,  #     
-    0x046e, 501,  #     
-    0x0470, 501,  #     
-    0x0472, 501,  #     
-    0x0474, 501,  #     
-    0x0476, 501,  #     
-    0x0478, 501,  #     
-    0x047a, 501,  #     
-    0x047c, 501,  #     
-    0x047e, 501,  #     
-    0x0480, 501,  #     
-    0x0490, 501,  #     
-    0x0492, 501,  #     
-    0x0494, 501,  #     
-    0x0496, 501,  #     
-    0x0498, 501,  #     
-    0x049a, 501,  #     
-    0x049c, 501,  #     
-    0x049e, 501,  #     
-    0x04a0, 501,  #     
-    0x04a2, 501,  #     
-    0x04a4, 501,  #     
-    0x04a6, 501,  #     
-    0x04a8, 501,  #     
-    0x04aa, 501,  #     
-    0x04ac, 501,  #     
-    0x04ae, 501,  #     
-    0x04b0, 501,  #     
-    0x04b2, 501,  #     
-    0x04b4, 501,  #     
-    0x04b6, 501,  #     
-    0x04b8, 501,  #     
-    0x04ba, 501,  #     
-    0x04bc, 501,  #     
-    0x04be, 501,  #     
-    0x04c1, 501,  #     
-    0x04c3, 501,  #     
-    0x04c7, 501,  #     
-    0x04cb, 501,  #     
-    0x04d0, 501,  #     
-    0x04d2, 501,  #     
-    0x04d4, 501,  #     
-    0x04d6, 501,  #     
-    0x04d8, 501,  #     
-    0x04da, 501,  #     
-    0x04dc, 501,  #     
-    0x04de, 501,  #     
-    0x04e0, 501,  #     
-    0x04e2, 501,  #     
-    0x04e4, 501,  #     
-    0x04e6, 501,  #     
-    0x04e8, 501,  #     
-    0x04ea, 501,  #     
-    0x04ee, 501,  #     
-    0x04f0, 501,  #     
-    0x04f2, 501,  #     
-    0x04f4, 501,  #     
-    0x04f8, 501,  #     
-    0x1e00, 501,  #     
-    0x1e02, 501,  #     
-    0x1e04, 501,  #     
-    0x1e06, 501,  #     
-    0x1e08, 501,  #     
-    0x1e0a, 501,  #     
-    0x1e0c, 501,  #     
-    0x1e0e, 501,  #     
-    0x1e10, 501,  #     
-    0x1e12, 501,  #     
-    0x1e14, 501,  #     
-    0x1e16, 501,  #     
-    0x1e18, 501,  #     
-    0x1e1a, 501,  #     
-    0x1e1c, 501,  #     
-    0x1e1e, 501,  #     
-    0x1e20, 501,  #     
-    0x1e22, 501,  #     
-    0x1e24, 501,  #     
-    0x1e26, 501,  #     
-    0x1e28, 501,  #     
-    0x1e2a, 501,  #     
-    0x1e2c, 501,  #     
-    0x1e2e, 501,  #     
-    0x1e30, 501,  #     
-    0x1e32, 501,  #     
-    0x1e34, 501,  #     
-    0x1e36, 501,  #     
-    0x1e38, 501,  #     
-    0x1e3a, 501,  #     
-    0x1e3c, 501,  #     
-    0x1e3e, 501,  #     
-    0x1e40, 501,  #     
-    0x1e42, 501,  #     
-    0x1e44, 501,  #     
-    0x1e46, 501,  #     
-    0x1e48, 501,  #     
-    0x1e4a, 501,  #     
-    0x1e4c, 501,  #     
-    0x1e4e, 501,  #     
-    0x1e50, 501,  #     
-    0x1e52, 501,  #     
-    0x1e54, 501,  #     
-    0x1e56, 501,  #     
-    0x1e58, 501,  #     
-    0x1e5a, 501,  #     
-    0x1e5c, 501,  #     
-    0x1e5e, 501,  #     
-    0x1e60, 501,  #     
-    0x1e62, 501,  #     
-    0x1e64, 501,  #     
-    0x1e66, 501,  #     
-    0x1e68, 501,  #     
-    0x1e6a, 501,  #     
-    0x1e6c, 501,  #     
-    0x1e6e, 501,  #     
-    0x1e70, 501,  #     
-    0x1e72, 501,  #     
-    0x1e74, 501,  #     
-    0x1e76, 501,  #     
-    0x1e78, 501,  #     
-    0x1e7a, 501,  #     
-    0x1e7c, 501,  #     
-    0x1e7e, 501,  #     
-    0x1e80, 501,  #     
-    0x1e82, 501,  #     
-    0x1e84, 501,  #     
-    0x1e86, 501,  #     
-    0x1e88, 501,  #     
-    0x1e8a, 501,  #     
-    0x1e8c, 501,  #     
-    0x1e8e, 501,  #     
-    0x1e90, 501,  #     
-    0x1e92, 501,  #     
-    0x1e94, 501,  #     
-    0x1ea0, 501,  #     
-    0x1ea2, 501,  #     
-    0x1ea4, 501,  #     
-    0x1ea6, 501,  #     
-    0x1ea8, 501,  #     
-    0x1eaa, 501,  #     
-    0x1eac, 501,  #     
-    0x1eae, 501,  #     
-    0x1eb0, 501,  #     
-    0x1eb2, 501,  #     
-    0x1eb4, 501,  #     
-    0x1eb6, 501,  #     
-    0x1eb8, 501,  #     
-    0x1eba, 501,  #     
-    0x1ebc, 501,  #     
-    0x1ebe, 501,  #     
-    0x1ec0, 501,  #     
-    0x1ec2, 501,  #     
-    0x1ec4, 501,  #     
-    0x1ec6, 501,  #     
-    0x1ec8, 501,  #     
-    0x1eca, 501,  #     
-    0x1ecc, 501,  #     
-    0x1ece, 501,  #     
-    0x1ed0, 501,  #     
-    0x1ed2, 501,  #     
-    0x1ed4, 501,  #     
-    0x1ed6, 501,  #     
-    0x1ed8, 501,  #     
-    0x1eda, 501,  #     
-    0x1edc, 501,  #     
-    0x1ede, 501,  #     
-    0x1ee0, 501,  #     
-    0x1ee2, 501,  #     
-    0x1ee4, 501,  #     
-    0x1ee6, 501,  #     
-    0x1ee8, 501,  #     
-    0x1eea, 501,  #     
-    0x1eec, 501,  #     
-    0x1eee, 501,  #     
-    0x1ef0, 501,  #     
-    0x1ef2, 501,  #     
-    0x1ef4, 501,  #     
-    0x1ef6, 501,  #     
-    0x1ef8, 501,  #     
-    0x1f59, 492,  #     
-    0x1f5b, 492,  #     
-    0x1f5d, 492,  #     
-    0x1f5f, 492,  #     
-    0x1fbc, 491,  #     
-    0x1fcc, 491,  #     
-    0x1fec, 493,  #     
-    0x1ffc, 491]  #     
+    0x0100, 501,  #
+    0x0102, 501,  #
+    0x0104, 501,  #
+    0x0106, 501,  #
+    0x0108, 501,  #
+    0x010a, 501,  #
+    0x010c, 501,  #
+    0x010e, 501,  #
+    0x0110, 501,  #
+    0x0112, 501,  #
+    0x0114, 501,  #
+    0x0116, 501,  #
+    0x0118, 501,  #
+    0x011a, 501,  #
+    0x011c, 501,  #
+    0x011e, 501,  #
+    0x0120, 501,  #
+    0x0122, 501,  #
+    0x0124, 501,  #
+    0x0126, 501,  #
+    0x0128, 501,  #
+    0x012a, 501,  #
+    0x012c, 501,  #
+    0x012e, 501,  #
+    0x0130, 301,  #  i
+    0x0132, 501,  #
+    0x0134, 501,  #
+    0x0136, 501,  #
+    0x0139, 501,  #
+    0x013b, 501,  #
+    0x013d, 501,  #
+    0x013f, 501,  #
+    0x0141, 501,  #
+    0x0143, 501,  #
+    0x0145, 501,  #
+    0x0147, 501,  #
+    0x014a, 501,  #
+    0x014c, 501,  #
+    0x014e, 501,  #
+    0x0150, 501,  #
+    0x0152, 501,  #
+    0x0154, 501,  #
+    0x0156, 501,  #
+    0x0158, 501,  #
+    0x015a, 501,  #
+    0x015c, 501,  #
+    0x015e, 501,  #
+    0x0160, 501,  #
+    0x0162, 501,  #
+    0x0164, 501,  #
+    0x0166, 501,  #
+    0x0168, 501,  #
+    0x016a, 501,  #
+    0x016c, 501,  #
+    0x016e, 501,  #
+    0x0170, 501,  #
+    0x0172, 501,  #
+    0x0174, 501,  #
+    0x0176, 501,  #
+    0x0178, 379,  #
+    0x0179, 501,  #
+    0x017b, 501,  #
+    0x017d, 501,  #
+    0x0181, 710,  #
+    0x0182, 501,  #
+    0x0184, 501,  #
+    0x0186, 706,  #
+    0x0187, 501,  #
+    0x018b, 501,  #
+    0x0190, 703,  #
+    0x0191, 501,  #
+    0x0193, 705,  #
+    0x0194, 707,  #
+    0x0196, 711,  #
+    0x0197, 709,  #
+    0x0198, 501,  #
+    0x019c, 711,  #
+    0x019d, 713,  #
+    0x01a0, 501,  #
+    0x01a2, 501,  #
+    0x01a4, 501,  #
+    0x01a7, 501,  #
+    0x01a9, 718,  #
+    0x01ac, 501,  #
+    0x01ae, 718,  #
+    0x01af, 501,  #
+    0x01b3, 501,  #
+    0x01b5, 501,  #
+    0x01b7, 719,  #
+    0x01b8, 501,  #
+    0x01bc, 501,  #
+    0x01c4, 502,  #
+    0x01c5, 501,  #
+    0x01c7, 502,  #
+    0x01c8, 501,  #
+    0x01ca, 502,  #
+    0x01cb, 501,  #
+    0x01cd, 501,  #
+    0x01cf, 501,  #
+    0x01d1, 501,  #
+    0x01d3, 501,  #
+    0x01d5, 501,  #
+    0x01d7, 501,  #
+    0x01d9, 501,  #
+    0x01db, 501,  #
+    0x01de, 501,  #
+    0x01e0, 501,  #
+    0x01e2, 501,  #
+    0x01e4, 501,  #
+    0x01e6, 501,  #
+    0x01e8, 501,  #
+    0x01ea, 501,  #
+    0x01ec, 501,  #
+    0x01ee, 501,  #
+    0x01f1, 502,  #
+    0x01f2, 501,  #
+    0x01f4, 501,  #
+    0x01fa, 501,  #
+    0x01fc, 501,  #
+    0x01fe, 501,  #
+    0x0200, 501,  #
+    0x0202, 501,  #
+    0x0204, 501,  #
+    0x0206, 501,  #
+    0x0208, 501,  #
+    0x020a, 501,  #
+    0x020c, 501,  #
+    0x020e, 501,  #
+    0x0210, 501,  #
+    0x0212, 501,  #
+    0x0214, 501,  #
+    0x0216, 501,  #
+    0x0386, 538,  #
+    0x038c, 564,  #
+    0x03e2, 501,  #
+    0x03e4, 501,  #
+    0x03e6, 501,  #
+    0x03e8, 501,  #
+    0x03ea, 501,  #
+    0x03ec, 501,  #
+    0x03ee, 501,  #
+    0x0460, 501,  #
+    0x0462, 501,  #
+    0x0464, 501,  #
+    0x0466, 501,  #
+    0x0468, 501,  #
+    0x046a, 501,  #
+    0x046c, 501,  #
+    0x046e, 501,  #
+    0x0470, 501,  #
+    0x0472, 501,  #
+    0x0474, 501,  #
+    0x0476, 501,  #
+    0x0478, 501,  #
+    0x047a, 501,  #
+    0x047c, 501,  #
+    0x047e, 501,  #
+    0x0480, 501,  #
+    0x0490, 501,  #
+    0x0492, 501,  #
+    0x0494, 501,  #
+    0x0496, 501,  #
+    0x0498, 501,  #
+    0x049a, 501,  #
+    0x049c, 501,  #
+    0x049e, 501,  #
+    0x04a0, 501,  #
+    0x04a2, 501,  #
+    0x04a4, 501,  #
+    0x04a6, 501,  #
+    0x04a8, 501,  #
+    0x04aa, 501,  #
+    0x04ac, 501,  #
+    0x04ae, 501,  #
+    0x04b0, 501,  #
+    0x04b2, 501,  #
+    0x04b4, 501,  #
+    0x04b6, 501,  #
+    0x04b8, 501,  #
+    0x04ba, 501,  #
+    0x04bc, 501,  #
+    0x04be, 501,  #
+    0x04c1, 501,  #
+    0x04c3, 501,  #
+    0x04c7, 501,  #
+    0x04cb, 501,  #
+    0x04d0, 501,  #
+    0x04d2, 501,  #
+    0x04d4, 501,  #
+    0x04d6, 501,  #
+    0x04d8, 501,  #
+    0x04da, 501,  #
+    0x04dc, 501,  #
+    0x04de, 501,  #
+    0x04e0, 501,  #
+    0x04e2, 501,  #
+    0x04e4, 501,  #
+    0x04e6, 501,  #
+    0x04e8, 501,  #
+    0x04ea, 501,  #
+    0x04ee, 501,  #
+    0x04f0, 501,  #
+    0x04f2, 501,  #
+    0x04f4, 501,  #
+    0x04f8, 501,  #
+    0x1e00, 501,  #
+    0x1e02, 501,  #
+    0x1e04, 501,  #
+    0x1e06, 501,  #
+    0x1e08, 501,  #
+    0x1e0a, 501,  #
+    0x1e0c, 501,  #
+    0x1e0e, 501,  #
+    0x1e10, 501,  #
+    0x1e12, 501,  #
+    0x1e14, 501,  #
+    0x1e16, 501,  #
+    0x1e18, 501,  #
+    0x1e1a, 501,  #
+    0x1e1c, 501,  #
+    0x1e1e, 501,  #
+    0x1e20, 501,  #
+    0x1e22, 501,  #
+    0x1e24, 501,  #
+    0x1e26, 501,  #
+    0x1e28, 501,  #
+    0x1e2a, 501,  #
+    0x1e2c, 501,  #
+    0x1e2e, 501,  #
+    0x1e30, 501,  #
+    0x1e32, 501,  #
+    0x1e34, 501,  #
+    0x1e36, 501,  #
+    0x1e38, 501,  #
+    0x1e3a, 501,  #
+    0x1e3c, 501,  #
+    0x1e3e, 501,  #
+    0x1e40, 501,  #
+    0x1e42, 501,  #
+    0x1e44, 501,  #
+    0x1e46, 501,  #
+    0x1e48, 501,  #
+    0x1e4a, 501,  #
+    0x1e4c, 501,  #
+    0x1e4e, 501,  #
+    0x1e50, 501,  #
+    0x1e52, 501,  #
+    0x1e54, 501,  #
+    0x1e56, 501,  #
+    0x1e58, 501,  #
+    0x1e5a, 501,  #
+    0x1e5c, 501,  #
+    0x1e5e, 501,  #
+    0x1e60, 501,  #
+    0x1e62, 501,  #
+    0x1e64, 501,  #
+    0x1e66, 501,  #
+    0x1e68, 501,  #
+    0x1e6a, 501,  #
+    0x1e6c, 501,  #
+    0x1e6e, 501,  #
+    0x1e70, 501,  #
+    0x1e72, 501,  #
+    0x1e74, 501,  #
+    0x1e76, 501,  #
+    0x1e78, 501,  #
+    0x1e7a, 501,  #
+    0x1e7c, 501,  #
+    0x1e7e, 501,  #
+    0x1e80, 501,  #
+    0x1e82, 501,  #
+    0x1e84, 501,  #
+    0x1e86, 501,  #
+    0x1e88, 501,  #
+    0x1e8a, 501,  #
+    0x1e8c, 501,  #
+    0x1e8e, 501,  #
+    0x1e90, 501,  #
+    0x1e92, 501,  #
+    0x1e94, 501,  #
+    0x1ea0, 501,  #
+    0x1ea2, 501,  #
+    0x1ea4, 501,  #
+    0x1ea6, 501,  #
+    0x1ea8, 501,  #
+    0x1eaa, 501,  #
+    0x1eac, 501,  #
+    0x1eae, 501,  #
+    0x1eb0, 501,  #
+    0x1eb2, 501,  #
+    0x1eb4, 501,  #
+    0x1eb6, 501,  #
+    0x1eb8, 501,  #
+    0x1eba, 501,  #
+    0x1ebc, 501,  #
+    0x1ebe, 501,  #
+    0x1ec0, 501,  #
+    0x1ec2, 501,  #
+    0x1ec4, 501,  #
+    0x1ec6, 501,  #
+    0x1ec8, 501,  #
+    0x1eca, 501,  #
+    0x1ecc, 501,  #
+    0x1ece, 501,  #
+    0x1ed0, 501,  #
+    0x1ed2, 501,  #
+    0x1ed4, 501,  #
+    0x1ed6, 501,  #
+    0x1ed8, 501,  #
+    0x1eda, 501,  #
+    0x1edc, 501,  #
+    0x1ede, 501,  #
+    0x1ee0, 501,  #
+    0x1ee2, 501,  #
+    0x1ee4, 501,  #
+    0x1ee6, 501,  #
+    0x1ee8, 501,  #
+    0x1eea, 501,  #
+    0x1eec, 501,  #
+    0x1eee, 501,  #
+    0x1ef0, 501,  #
+    0x1ef2, 501,  #
+    0x1ef4, 501,  #
+    0x1ef6, 501,  #
+    0x1ef8, 501,  #
+    0x1f59, 492,  #
+    0x1f5b, 492,  #
+    0x1f5d, 492,  #
+    0x1f5f, 492,  #
+    0x1fbc, 491,  #
+    0x1fcc, 491,  #
+    0x1fec, 493,  #
+    0x1ffc, 491]  #
 
   toTitleSinglets = [
-    0x01c4, 501,  #     
-    0x01c6, 499,  #     
-    0x01c7, 501,  #     
-    0x01c9, 499,  #     
-    0x01ca, 501,  #     
-    0x01cc, 499,  #     
-    0x01f1, 501,  #     
-    0x01f3, 499]  #     
+    0x01c4, 501,  #
+    0x01c6, 499,  #
+    0x01c7, 501,  #
+    0x01c9, 499,  #
+    0x01ca, 501,  #
+    0x01cc, 499,  #
+    0x01f1, 501,  #
+    0x01f3, 499]  #
 
-proc binarySearch(c: RuneImpl, tab: openArray[RuneImpl], len, stride: int): int = 
+proc binarySearch(c: RuneImpl, tab: openArray[RuneImpl], len, stride: int): int =
   var n = len
   var t = 0
-  while n > 1: 
+  while n > 1:
     var m = n div 2
     var p = t + m*stride
     if c >= tab[p]:
@@ -1131,9 +1131,9 @@ proc binarySearch(c: RuneImpl, tab: openArray[RuneImpl], len, stride: int): int
     return t
   return -1
 
-proc toLower*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} = 
+proc toLower*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} =
   ## Converts `c` into lower case. This works for any Unicode character.
-  ## If possible, prefer `toLower` over `toUpper`. 
+  ## If possible, prefer `toLower` over `toUpper`.
   var c = RuneImpl(c)
   var p = binarySearch(c, tolowerRanges, len(tolowerRanges) div 3, 3)
   if p >= 0 and c >= tolowerRanges[p] and c <= tolowerRanges[p+1]:
@@ -1143,9 +1143,9 @@ proc toLower*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} =
     return Rune(c + tolowerSinglets[p+1] - 500)
   return Rune(c)
 
-proc toUpper*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} = 
+proc toUpper*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} =
   ## Converts `c` into upper case. This works for any Unicode character.
-  ## If possible, prefer `toLower` over `toUpper`. 
+  ## If possible, prefer `toLower` over `toUpper`.
   var c = RuneImpl(c)
   var p = binarySearch(c, toupperRanges, len(toupperRanges) div 3, 3)
   if p >= 0 and c >= toupperRanges[p] and c <= toupperRanges[p+1]:
@@ -1155,16 +1155,16 @@ proc toUpper*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} =
     return Rune(c + toupperSinglets[p+1] - 500)
   return Rune(c)
 
-proc toTitle*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} = 
+proc toTitle*(c: Rune): Rune {.rtl, extern: "nuc$1", procvar.} =
   var c = RuneImpl(c)
   var p = binarySearch(c, toTitleSinglets, len(toTitleSinglets) div 2, 2)
   if p >= 0 and c == toTitleSinglets[p]:
     return Rune(c + toTitleSinglets[p+1] - 500)
   return Rune(c)
 
-proc isLower*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} = 
+proc isLower*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   ## returns true iff `c` is a lower case Unicode character
-  ## If possible, prefer `isLower` over `isUpper`. 
+  ## If possible, prefer `isLower` over `isUpper`.
   var c = RuneImpl(c)
   # Note: toUpperRanges is correct here!
   var p = binarySearch(c, toupperRanges, len(toupperRanges) div 3, 3)
@@ -1174,9 +1174,9 @@ proc isLower*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   if p >= 0 and c == toupperSinglets[p]:
     return true
 
-proc isUpper*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} = 
+proc isUpper*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   ## returns true iff `c` is a upper case Unicode character
-  ## If possible, prefer `isLower` over `isUpper`. 
+  ## If possible, prefer `isLower` over `isUpper`.
   var c = RuneImpl(c)
   # Note: toLowerRanges is correct here!
   var p = binarySearch(c, tolowerRanges, len(tolowerRanges) div 3, 3)
@@ -1186,9 +1186,9 @@ proc isUpper*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   if p >= 0 and c == tolowerSinglets[p]:
     return true
 
-proc isAlpha*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} = 
+proc isAlpha*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   ## returns true iff `c` is an *alpha* Unicode character (i.e. a letter)
-  if isUpper(c) or isLower(c): 
+  if isUpper(c) or isLower(c):
     return true
   var c = RuneImpl(c)
   var p = binarySearch(c, alphaRanges, len(alphaRanges) div 2, 2)
@@ -1197,11 +1197,11 @@ proc isAlpha*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   p = binarySearch(c, alphaSinglets, len(alphaSinglets), 1)
   if p >= 0 and c == alphaSinglets[p]:
     return true
-  
-proc isTitle*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} = 
+
+proc isTitle*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   return isUpper(c) and isLower(c)
 
-proc isWhiteSpace*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} = 
+proc isWhiteSpace*(c: Rune): bool {.rtl, extern: "nuc$1", procvar.} =
   ## returns true iff `c` is a Unicode whitespace character
   var c = RuneImpl(c)
   var p = binarySearch(c, spaceRanges, len(spaceRanges) div 2, 2)
@@ -1228,7 +1228,7 @@ iterator runes*(s: string): Rune =
     fastRuneAt(s, i, result, true)
     yield result
 
-proc cmpRunesIgnoreCase*(a, b: string): int {.rtl, extern: "nuc$1", procvar.} = 
+proc cmpRunesIgnoreCase*(a, b: string): int {.rtl, extern: "nuc$1", procvar.} =
   ## compares two UTF8 strings and ignores the case. Returns:
   ##
   ## | 0 iff a == b
diff --git a/lib/pure/unittest.nim b/lib/pure/unittest.nim
index f4e42ee63..3bf4724b9 100644
--- a/lib/pure/unittest.nim
+++ b/lib/pure/unittest.nim
@@ -47,7 +47,7 @@ type
 
 {.deprecated: [TTestStatus: TestStatus, TOutputLevel: OutputLevel]}
 
-var 
+var
   abortOnError* {.threadvar.}: bool
   outputLevel* {.threadvar.}: OutputLevel
   colorOutput* {.threadvar.}: bool
@@ -144,7 +144,7 @@ macro check*(conditions: stmt): stmt {.immediate.} =
     when compiles(string($value)):
       checkpoint(name & " was " & $value)
 
-  proc inspectArgs(exp: PNimrodNode) =
+  proc inspectArgs(exp: NimNode) =
     for i in 1 .. <exp.len:
       if exp[i].kind notin nnkLiterals:
         inc counter
@@ -202,7 +202,7 @@ template require*(conditions: stmt): stmt {.immediate, dirty.} =
 macro expect*(exceptions: varargs[expr], body: stmt): stmt {.immediate.} =
   let exp = callsite()
   template expectBody(errorTypes, lineInfoLit: expr,
-                      body: stmt): PNimrodNode {.dirty.} =
+                      body: stmt): NimNode {.dirty.} =
     try:
       body
       checkpoint(lineInfoLit & ": Expect Failed, no exception was thrown.")
diff --git a/lib/pure/xmldom.nim b/lib/pure/xmldom.nim
index 6242e589e..6cf837f25 100644
--- a/lib/pure/xmldom.nim
+++ b/lib/pure/xmldom.nim
@@ -365,23 +365,21 @@ discard """proc getElementById*(doc: PDocument, elementId: string): PElement =
 proc getElementsByTagName*(doc: PDocument, tagName: string): seq[PNode] =
   ## Returns a NodeList of all the Elements with a given tag name in
   ## the order in which they are encountered in a preorder traversal of the Document tree.
-  var result: seq[PNode] = @[]
+  result = @[]
   if doc.fDocumentElement.fNodeName == tagName or tagName == "*":
     result.add(doc.fDocumentElement)
 
   result.add(doc.fDocumentElement.findNodes(tagName))
-  return result
 
 proc getElementsByTagNameNS*(doc: PDocument, namespaceURI: string, localName: string): seq[PNode] =
   ## Returns a NodeList of all the Elements with a given localName and namespaceURI
   ## in the order in which they are encountered in a preorder traversal of the Document tree.
-  var result: seq[PNode] = @[]
+  result = @[]
   if doc.fDocumentElement.fLocalName == localName or localName == "*":
     if doc.fDocumentElement.fNamespaceURI == namespaceURI or namespaceURI == "*":
       result.add(doc.fDocumentElement)
 
   result.add(doc.fDocumentElement.findNodesNS(namespaceURI, localName))
-  return result
 
 proc importNode*(doc: PDocument, importedNode: PNode, deep: bool): PNode =
   ## Imports a node from another document to this document
@@ -677,7 +675,7 @@ proc removeChild*(n: PNode, oldChild: PNode): PNode =
       if n.childNodes[i] == oldChild:
         result = n.childNodes[i]
         n.childNodes.delete(i)
-        return result
+        return
 
   raise newException(ENotFoundErr, "Node not found")
 
@@ -693,7 +691,7 @@ proc replaceChild*(n: PNode, newChild: PNode, oldChild: PNode): PNode =
       if n.childNodes[i] == oldChild:
         result = n.childNodes[i]
         n.childNodes[i] = newChild
-        return result
+        return
 
   raise newException(ENotFoundErr, "Node not found")
 
@@ -740,7 +738,7 @@ proc removeNamedItem*(nList: var seq[PNode], name: string): PNode =
     if nList[i].fNodeName == name:
       result = nList[i]
       nList.delete(i)
-      return result
+      return
 
   raise newException(ENotFoundErr, "Node not found")
 
@@ -750,7 +748,7 @@ proc removeNamedItemNS*(nList: var seq[PNode], namespaceURI: string, localName:
     if nList[i].fLocalName == localName and nList[i].fNamespaceURI == namespaceURI:
       result = nList[i]
       nList.delete(i)
-      return result
+      return
 
   raise newException(ENotFoundErr, "Node not found")
 
@@ -965,7 +963,7 @@ proc removeAttributeNode*(el: PElement, oldAttr: PAttr): PAttr =
       if el.attributes[i] == oldAttr:
         result = el.attributes[i]
         el.attributes.delete(i)
-        return result
+        return
 
   raise newException(ENotFoundErr, "oldAttr is not a member of el's Attributes")
 
diff --git a/lib/pure/xmltree.nim b/lib/pure/xmltree.nim
index c783158ea..0bf5b52a4 100644
--- a/lib/pure/xmltree.nim
+++ b/lib/pure/xmltree.nim
@@ -12,20 +12,20 @@
 import macros, strtabs
 
 type
-  XmlNode* = ref XmlNodeObj ## an XML tree consists of ``PXmlNode``'s. 
-  
+  XmlNode* = ref XmlNodeObj ## an XML tree consists of ``PXmlNode``'s.
+
   XmlNodeKind* = enum  ## different kinds of ``PXmlNode``'s
     xnText,             ## a text element
     xnElement,          ## an element with 0 or more children
     xnCData,            ## a CDATA node
     xnEntity,           ## an entity (like ``&thing;``)
     xnComment           ## an XML comment
-  
+
   XmlAttributes* = StringTableRef ## an alias for a string to string mapping
-  
-  XmlNodeObj {.acyclic.} = object 
+
+  XmlNodeObj {.acyclic.} = object
     case k: XmlNodeKind # private, use the kind() proc to read this field.
-    of xnText, xnComment, xnCData, xnEntity: 
+    of xnText, xnComment, xnCData, xnEntity:
       fText: string
     of xnElement:
       fTag: string
@@ -41,34 +41,34 @@ proc newXmlNode(kind: XmlNodeKind): XmlNode =
   new(result)
   result.k = kind
 
-proc newElement*(tag: string): XmlNode = 
+proc newElement*(tag: string): XmlNode =
   ## creates a new ``PXmlNode`` of kind ``xnText`` with the given `tag`.
   result = newXmlNode(xnElement)
   result.fTag = tag
   result.s = @[]
   # init attributes lazily to safe memory
 
-proc newText*(text: string): XmlNode = 
+proc newText*(text: string): XmlNode =
   ## creates a new ``PXmlNode`` of kind ``xnText`` with the text `text`.
   result = newXmlNode(xnText)
   result.fText = text
 
-proc newComment*(comment: string): XmlNode = 
+proc newComment*(comment: string): XmlNode =
   ## creates a new ``PXmlNode`` of kind ``xnComment`` with the text `comment`.
   result = newXmlNode(xnComment)
   result.fText = comment
 
-proc newCData*(cdata: string): XmlNode = 
+proc newCData*(cdata: string): XmlNode =
   ## creates a new ``PXmlNode`` of kind ``xnComment`` with the text `cdata`.
   result = newXmlNode(xnCData)
   result.fText = cdata
 
-proc newEntity*(entity: string): XmlNode = 
+proc newEntity*(entity: string): XmlNode =
   ## creates a new ``PXmlNode`` of kind ``xnEntity`` with the text `entity`.
   result = newXmlNode(xnCData)
   result.fText = entity
 
-proc text*(n: XmlNode): string {.inline.} = 
+proc text*(n: XmlNode): string {.inline.} =
   ## gets the associated text with the node `n`. `n` can be a CDATA, Text,
   ## comment, or entity node.
   assert n.k in {xnText, xnComment, xnCData, xnEntity}
@@ -93,16 +93,16 @@ proc innerText*(n: XmlNode): string =
   for i in 0 .. n.s.len-1:
     if n.s[i].k in {xnText, xnEntity}: result.add(n.s[i].fText)
 
-proc tag*(n: XmlNode): string {.inline.} = 
+proc tag*(n: XmlNode): string {.inline.} =
   ## gets the tag name of `n`. `n` has to be an ``xnElement`` node.
   assert n.k == xnElement
   result = n.fTag
-    
-proc add*(father, son: XmlNode) {.inline.} = 
+
+proc add*(father, son: XmlNode) {.inline.} =
   ## adds the child `son` to `father`.
   add(father.s, son)
-  
-proc len*(n: XmlNode): int {.inline.} = 
+
+proc len*(n: XmlNode): int {.inline.} =
   ## returns the number `n`'s children.
   if n.k == xnElement: result = len(n.s)
 
@@ -110,38 +110,38 @@ proc kind*(n: XmlNode): XmlNodeKind {.inline.} =
   ## returns `n`'s kind.
   result = n.k
 
-proc `[]`* (n: XmlNode, i: int): XmlNode {.inline.} = 
+proc `[]`* (n: XmlNode, i: int): XmlNode {.inline.} =
   ## returns the `i`'th child of `n`.
   assert n.k == xnElement
   result = n.s[i]
 
-proc mget* (n: var XmlNode, i: int): var XmlNode {.inline.} = 
+proc mget* (n: var XmlNode, i: int): var XmlNode {.inline.} =
   ## returns the `i`'th child of `n` so that it can be modified
   assert n.k == xnElement
   result = n.s[i]
 
-iterator items*(n: XmlNode): XmlNode {.inline.} = 
+iterator items*(n: XmlNode): XmlNode {.inline.} =
   ## iterates over any child of `n`.
   assert n.k == xnElement
   for i in 0 .. n.len-1: yield n[i]
 
-iterator mitems*(n: var XmlNode): var XmlNode {.inline.} = 
+iterator mitems*(n: var XmlNode): var XmlNode {.inline.} =
   ## iterates over any child of `n`.
   assert n.k == xnElement
   for i in 0 .. n.len-1: yield mget(n, i)
 
-proc attrs*(n: XmlNode): XmlAttributes {.inline.} = 
+proc attrs*(n: XmlNode): XmlAttributes {.inline.} =
   ## gets the attributes belonging to `n`.
   ## Returns `nil` if attributes have not been initialised for this node.
   assert n.k == xnElement
   result = n.fAttr
-  
-proc `attrs=`*(n: XmlNode, attr: XmlAttributes) {.inline.} = 
+
+proc `attrs=`*(n: XmlNode, attr: XmlAttributes) {.inline.} =
   ## sets the attributes belonging to `n`.
   assert n.k == xnElement
   n.fAttr = attr
 
-proc attrsLen*(n: XmlNode): int {.inline.} = 
+proc attrsLen*(n: XmlNode): int {.inline.} =
   ## returns the number of `n`'s attributes.
   assert n.k == xnElement
   if not isNil(n.fAttr): result = len(n.fAttr)
@@ -151,12 +151,12 @@ proc clientData*(n: XmlNode): int {.inline.} =
   ## parser and generator.
   result = n.fClientData
 
-proc `clientData=`*(n: XmlNode, data: int) {.inline.} = 
+proc `clientData=`*(n: XmlNode, data: int) {.inline.} =
   ## sets the client data of `n`. The client data field is used by the HTML
   ## parser and generator.
   n.fClientData = data
 
-proc addEscaped*(result: var string, s: string) = 
+proc addEscaped*(result: var string, s: string) =
   ## same as ``result.add(escape(s))``, but more efficient.
   for c in items(s):
     case c
@@ -168,8 +168,8 @@ proc addEscaped*(result: var string, s: string) =
     of '/': result.add("&#x2F;")
     else: result.add(c)
 
-proc escape*(s: string): string = 
-  ## escapes `s` for inclusion into an XML document. 
+proc escape*(s: string): string =
+  ## escapes `s` for inclusion into an XML document.
   ## Escapes these characters:
   ##
   ## ------------    -------------------
@@ -184,26 +184,26 @@ proc escape*(s: string): string =
   ## ------------    -------------------
   result = newStringOfCap(s.len)
   addEscaped(result, s)
-  
-proc addIndent(result: var string, indent: int) = 
+
+proc addIndent(result: var string, indent: int) =
   result.add("\n")
   for i in 1..indent: result.add(' ')
-  
+
 proc noWhitespace(n: XmlNode): bool =
   #for i in 1..n.len-1:
   #  if n[i].kind != n[0].kind: return true
   for i in 0..n.len-1:
     if n[i].kind in {xnText, xnEntity}: return true
-  
-proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) = 
+
+proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) =
   ## adds the textual representation of `n` to `result`.
   if n == nil: return
   case n.k
   of xnElement:
     result.add('<')
     result.add(n.fTag)
-    if not isNil(n.fAttr): 
-      for key, val in pairs(n.fAttr): 
+    if not isNil(n.fAttr):
+      for key, val in pairs(n.fAttr):
         result.add(' ')
         result.add(key)
         result.add("=\"")
@@ -217,7 +217,7 @@ proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) =
           # because this would be wrong. For example: ``a<b>b</b>`` is
           # different from ``a <b>b</b>``.
           for i in 0..n.len-1: result.add(n[i], indent+indWidth, indWidth)
-        else: 
+        else:
           for i in 0..n.len-1:
             result.addIndent(indent+indWidth)
             result.add(n[i], indent+indWidth, indWidth)
@@ -227,7 +227,7 @@ proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) =
       result.add("</")
       result.add(n.fTag)
       result.add(">")
-    else: 
+    else:
       result.add(" />")
   of xnText:
     result.addEscaped(n.fText)
@@ -245,7 +245,7 @@ proc add*(result: var string, n: XmlNode, indent = 0, indWidth = 2) =
     result.add(';')
 
 const
-  xmlHeader* = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n" 
+  xmlHeader* = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n"
     ## header to use for complete XML output
 
 proc `$`*(n: XmlNode): string =
@@ -255,21 +255,21 @@ proc `$`*(n: XmlNode): string =
   result.add(n)
 
 proc newXmlTree*(tag: string, children: openArray[XmlNode],
-                 attributes: XmlAttributes = nil): XmlNode = 
+                 attributes: XmlAttributes = nil): XmlNode =
   ## creates a new XML tree with `tag`, `children` and `attributes`
   result = newXmlNode(xnElement)
   result.fTag = tag
   newSeq(result.s, children.len)
   for i in 0..children.len-1: result.s[i] = children[i]
   result.fAttr = attributes
-  
-proc xmlConstructor(e: PNimrodNode): PNimrodNode {.compileTime.} =
+
+proc xmlConstructor(e: NimNode): NimNode {.compileTime.} =
   expectLen(e, 2)
   var a = e[1]
   if a.kind == nnkCall:
     result = newCall("newXmlTree", toStrLit(a[0]))
     var attrs = newNimNode(nnkBracket, a)
-    var newStringTabCall = newCall("newStringTable", attrs, 
+    var newStringTabCall = newCall("newStringTable", attrs,
                                    newIdentNode("modeCaseSensitive"))
     var elements = newNimNode(nnkBracket, a)
     for i in 1..a.len-1:
@@ -280,13 +280,13 @@ proc xmlConstructor(e: PNimrodNode): PNimrodNode {.compileTime.} =
       else:
         elements.add(a[i])
     result.add(elements)
-    if attrs.len > 1: 
+    if attrs.len > 1:
       #echo repr(newStringTabCall)
       result.add(newStringTabCall)
   else:
     result = newCall("newXmlTree", toStrLit(a))
 
-macro `<>`*(x: expr): expr {.immediate.} = 
+macro `<>`*(x: expr): expr {.immediate.} =
   ## Constructor macro for XML. Example usage:
   ##
   ## .. code-block:: nim
diff --git a/lib/system.nim b/lib/system.nim
index ea35bd54a..52c29f757 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -76,6 +76,10 @@ type
   void* {.magic: "VoidType".}   ## meta type to denote the absence of any type
   auto* = expr
   any* = distinct auto
+  untyped* {.magic: Expr.} ## meta type to denote an expression that
+                           ## is not resolved (for templates)
+  typed* {.magic: Stmt.}   ## meta type to denote an expression that
+                           ## is resolved (for templates)
 
   SomeSignedInt* = int|int8|int16|int32|int64
     ## type class matching all signed integer types
@@ -140,6 +144,16 @@ proc declaredInScope*(x: expr): bool {.
   ## Special compile-time procedure that checks whether `x` is
   ## declared in the current scope. `x` has to be an identifier.
 
+proc `addr`*[T](x: var T): ptr T {.magic: "Addr", noSideEffect.} =
+  ## Builtin 'addr' operator for taking the address of a memory location.
+  ## Cannot be overloaded.
+  discard
+
+proc `type`*(x: expr): typeDesc {.magic: "TypeOf", noSideEffect.} =
+  ## Builtin 'type' operator for accessing the type of an expression.
+  ## Cannot be overloaded.
+  discard
+
 proc `not` *(x: bool): bool {.magic: "Not", noSideEffect.}
   ## Boolean not; returns true iff ``x == false``.
 
@@ -163,12 +177,6 @@ proc new*(T: typedesc): ref T =
   ## reference to it as result value
   new(result)
 
-proc unsafeNew*[T](a: var ref T, size: int) {.magic: "New", noSideEffect.}
-  ## creates a new object of type ``T`` and returns a safe (traced)
-  ## reference to it in ``a``. This is **unsafe** as it allocates an object
-  ## of the passed ``size``. This should only be used for optimization
-  ## purposes when you know what you're doing!
-
 proc internalNew*[T](a: var ref T) {.magic: "New", noSideEffect.}
   ## leaked implementation detail. Do not use.
 
@@ -212,13 +220,13 @@ type
   set*{.magic: "Set".}[T]  ## Generic type to construct bit sets.
 
 type
-  Slice* {.final, pure.}[T] = object ## builtin slice type
-    a*, b*: T                        ## the bounds
+  Slice*[T] = object ## builtin slice type
+    a*, b*: T        ## the bounds
 
 when defined(nimalias):
   {.deprecated: [TSlice: Slice].}
 
-proc `..`*[T](a, b: T): Slice[T] {.noSideEffect, inline.} =
+proc `..`*[T](a, b: T): Slice[T] {.noSideEffect, inline, magic: "DotDot".} =
   ## `slice`:idx: operator that constructs an interval ``[a, b]``, both `a`
   ## and `b` are inclusive. Slices can also be used in the set constructor
   ## and in ordinal case statements, but then they are special-cased by the
@@ -226,7 +234,7 @@ proc `..`*[T](a, b: T): Slice[T] {.noSideEffect, inline.} =
   result.a = a
   result.b = b
 
-proc `..`*[T](b: T): Slice[T] {.noSideEffect, inline.} =
+proc `..`*[T](b: T): Slice[T] {.noSideEffect, inline, magic: "DotDot".} =
   ## `slice`:idx: operator that constructs an interval ``[default(T), b]``
   result.b = b
 
@@ -503,7 +511,13 @@ type
   ESynch: Exception
 ].}
 
-proc sizeof*[T](x: T): Natural {.magic: "SizeOf", noSideEffect.}
+proc unsafeNew*[T](a: var ref T, size: Natural) {.magic: "New", noSideEffect.}
+  ## creates a new object of type ``T`` and returns a safe (traced)
+  ## reference to it in ``a``. This is **unsafe** as it allocates an object
+  ## of the passed ``size``. This should only be used for optimization
+  ## purposes when you know what you're doing!
+
+proc sizeof*[T](x: T): int {.magic: "SizeOf", noSideEffect.}
   ## returns the size of ``x`` in bytes. Since this is a low-level proc,
   ## its usage is discouraged - using ``new`` for the most cases suffices
   ## that one never needs to know ``x``'s size. As a special semantic rule,
@@ -537,7 +551,7 @@ proc dec*[T: Ordinal|uint|uint64](x: var T, y = 1) {.magic: "Dec", noSideEffect.
   ## exist, ``EOutOfRange`` is raised or a compile time error occurs. This is a
   ## short notation for: ``x = pred(x, y)``.
 
-proc newSeq*[T](s: var seq[T], len: int) {.magic: "NewSeq", noSideEffect.}
+proc newSeq*[T](s: var seq[T], len: Natural) {.magic: "NewSeq", noSideEffect.}
   ## creates a new sequence of type ``seq[T]`` with length ``len``.
   ## This is equivalent to ``s = @[]; setlen(s, len)``, but more
   ## efficient since no reallocation is needed.
@@ -555,7 +569,7 @@ proc newSeq*[T](s: var seq[T], len: int) {.magic: "NewSeq", noSideEffect.}
   ##   inputStrings[2] = "would crash"
   ##   #inputStrings[3] = "out of bounds"
 
-proc newSeq*[T](len = 0): seq[T] =
+proc newSeq*[T](len = 0.Natural): seq[T] =
   ## creates a new sequence of type ``seq[T]`` with length ``len``.
   ##
   ## Note that the sequence will be filled with zeroed entries, which can be a
@@ -694,6 +708,7 @@ proc `div` *(x, y: int32): int32 {.magic: "DivI", noSideEffect.}
 proc `div` *(x, y: int64): int64 {.magic: "DivI64", noSideEffect.}
   ## computes the integer division. This is roughly the same as
   ## ``floor(x/y)``.
+  ##
   ## .. code-block:: Nim
   ##   1 div 2 == 0
   ##   2 div 2 == 1
@@ -713,6 +728,7 @@ proc `shr` *(x, y: int16): int16 {.magic: "ShrI", noSideEffect.}
 proc `shr` *(x, y: int32): int32 {.magic: "ShrI", noSideEffect.}
 proc `shr` *(x, y: int64): int64 {.magic: "ShrI64", noSideEffect.}
   ## computes the `shift right` operation of `x` and `y`.
+  ##
   ## .. code-block:: Nim
   ##   0b0001_0000'i8 shr 2 == 0b0100_0000'i8
   ##   0b1000_0000'i8 shr 2 == 0b0000_0000'i8
@@ -927,7 +943,7 @@ proc `@` * [IDX, T](a: array[IDX, T]): seq[T] {.
   ## sequences with the array constructor: ``@[1, 2, 3]`` has the type
   ## ``seq[int]``, while ``[1, 2, 3]`` has the type ``array[0..2, int]``.
 
-proc setLen*[T](s: var seq[T], newlen: int) {.
+proc setLen*[T](s: var seq[T], newlen: Natural) {.
   magic: "SetLengthSeq", noSideEffect.}
   ## sets the length of `s` to `newlen`.
   ## ``T`` may be any sequence type.
@@ -935,14 +951,14 @@ proc setLen*[T](s: var seq[T], newlen: int) {.
   ## ``s`` will be truncated. `s` cannot be nil! To initialize a sequence with
   ## a size, use ``newSeq`` instead.
 
-proc setLen*(s: var string, newlen: int) {.
+proc setLen*(s: var string, newlen: Natural) {.
   magic: "SetLengthStr", noSideEffect.}
   ## sets the length of `s` to `newlen`.
   ## If the current length is greater than the new length,
   ## ``s`` will be truncated. `s` cannot be nil! To initialize a string with
   ## a size, use ``newString`` instead.
 
-proc newString*(len: int): string {.
+proc newString*(len: Natural): string {.
   magic: "NewString", importc: "mnewString", noSideEffect.}
   ## returns a new string of length ``len`` but with uninitialized
   ## content. One needs to fill the string character after character
@@ -950,7 +966,7 @@ proc newString*(len: int): string {.
   ## optimization purposes; the same effect can be achieved with the
   ## ``&`` operator or with ``add``.
 
-proc newStringOfCap*(cap: int): string {.
+proc newStringOfCap*(cap: Natural): string {.
   magic: "NewStringOfCap", importc: "rawNewString", noSideEffect.}
   ## returns a new string of length ``0`` but with capacity `cap`.This
   ## procedure exists only for optimization purposes; the same effect can
@@ -1140,21 +1156,21 @@ proc shallowCopy*[T](x: var T, y: T) {.noSideEffect, magic: "ShallowCopy".}
   ## is a reason why the default assignment does a deep copy of sequences
   ## and strings.
 
-proc del*[T](x: var seq[T], i: int) {.noSideEffect.} =
+proc del*[T](x: var seq[T], i: Natural) {.noSideEffect.} =
   ## deletes the item at index `i` by putting ``x[high(x)]`` into position `i`.
   ## This is an O(1) operation.
   let xl = x.len
   shallowCopy(x[i], x[xl-1])
   setLen(x, xl-1)
 
-proc delete*[T](x: var seq[T], i: int) {.noSideEffect.} =
+proc delete*[T](x: var seq[T], i: Natural) {.noSideEffect.} =
   ## deletes the item at index `i` by moving ``x[i+1..]`` by one position.
   ## This is an O(n) operation.
   let xl = x.len
   for j in i..xl-2: shallowCopy(x[j], x[j+1])
   setLen(x, xl-1)
 
-proc insert*[T](x: var seq[T], item: T, i = 0) {.noSideEffect.} =
+proc insert*[T](x: var seq[T], item: T, i = 0.Natural) {.noSideEffect.} =
   ## inserts `item` into `x` at position `i`.
   let xl = x.len
   setLen(x, xl+1)
@@ -1224,7 +1240,7 @@ type # these work for most platforms:
     ## This is the same as the type ``unsigned char`` in *C*.
   cushort* {.importc: "unsigned short", nodecl.} = uint16
     ## This is the same as the type ``unsigned short`` in *C*.
-  cuint* {.importc: "int", nodecl.} = uint32
+  cuint* {.importc: "unsigned int", nodecl.} = uint32
     ## This is the same as the type ``unsigned int`` in *C*.
   culonglong* {.importc: "unsigned long long", nodecl.} = uint64
     ## This is the same as the type ``unsigned long long`` in *C*.
@@ -1300,19 +1316,19 @@ proc substr*(s: string, first, last: int): string {.
   ## or `limit`:idx: a string's length.
 
 when not defined(nimrodVM):
-  proc zeroMem*(p: pointer, size: int) {.importc, noDecl, benign.}
+  proc zeroMem*(p: pointer, size: Natural) {.importc, noDecl, benign.}
     ## overwrites the contents of the memory at ``p`` with the value 0.
     ## Exactly ``size`` bytes will be overwritten. Like any procedure
     ## dealing with raw memory this is *unsafe*.
 
-  proc copyMem*(dest, source: pointer, size: int) {.
+  proc copyMem*(dest, source: pointer, size: Natural) {.
     importc: "memcpy", header: "<string.h>", benign.}
     ## copies the contents from the memory at ``source`` to the memory
     ## at ``dest``. Exactly ``size`` bytes will be copied. The memory
     ## regions may not overlap. Like any procedure dealing with raw
     ## memory this is *unsafe*.
 
-  proc moveMem*(dest, source: pointer, size: int) {.
+  proc moveMem*(dest, source: pointer, size: Natural) {.
     importc: "memmove", header: "<string.h>", benign.}
     ## copies the contents from the memory at ``source`` to the memory
     ## at ``dest``. Exactly ``size`` bytes will be copied. The memory
@@ -1320,7 +1336,7 @@ when not defined(nimrodVM):
     ## and is thus somewhat more safe than ``copyMem``. Like any procedure
     ## dealing with raw memory this is still *unsafe*, though.
 
-  proc equalMem*(a, b: pointer, size: int): bool {.
+  proc equalMem*(a, b: pointer, size: Natural): bool {.
     importc: "equalMem", noDecl, noSideEffect.}
     ## compares the memory blocks ``a`` and ``b``. ``size`` bytes will
     ## be compared. If the blocks are equal, true is returned, false
@@ -1328,7 +1344,7 @@ when not defined(nimrodVM):
     ## *unsafe*.
 
   when hostOS != "standalone":
-    proc alloc*(size: int): pointer {.noconv, rtl, tags: [], benign.}
+    proc alloc*(size: Natural): pointer {.noconv, rtl, tags: [], benign.}
       ## allocates a new memory block with at least ``size`` bytes. The
       ## block has to be freed with ``realloc(block, 0)`` or
       ## ``dealloc(block)``. The block is not initialized, so reading
@@ -1343,7 +1359,7 @@ when not defined(nimrodVM):
       ## The allocated memory belongs to its allocating thread!
       ## Use `createSharedU` to allocate from a shared heap.
       cast[ptr T](alloc(T.sizeof * size))
-    proc alloc0*(size: int): pointer {.noconv, rtl, tags: [], benign.}
+    proc alloc0*(size: Natural): pointer {.noconv, rtl, tags: [], benign.}
       ## allocates a new memory block with at least ``size`` bytes. The
       ## block has to be freed with ``realloc(block, 0)`` or
       ## ``dealloc(block)``. The block is initialized with all bytes
@@ -1358,8 +1374,8 @@ when not defined(nimrodVM):
       ## The allocated memory belongs to its allocating thread!
       ## Use `createShared` to allocate from a shared heap.
       cast[ptr T](alloc0(T.sizeof * size))
-    proc realloc*(p: pointer, newSize: int): pointer {.noconv, rtl, tags: [],
-                                                       benign.}
+    proc realloc*(p: pointer, newSize: Natural): pointer {.noconv, rtl, tags: [],
+                                                           benign.}
       ## grows or shrinks a given memory block. If p is **nil** then a new
       ## memory block is returned. In either way the block has at least
       ## ``newSize`` bytes. If ``newSize == 0`` and p is not **nil**
@@ -1386,7 +1402,7 @@ when not defined(nimrodVM):
       ## Use `deallocShared` to deallocate from a shared heap.
     proc free*[T](p: ptr T) {.inline, benign.} =
       dealloc(p)
-    proc allocShared*(size: int): pointer {.noconv, rtl, benign.}
+    proc allocShared*(size: Natural): pointer {.noconv, rtl, benign.}
       ## allocates a new memory block on the shared heap with at
       ## least ``size`` bytes. The block has to be freed with
       ## ``reallocShared(block, 0)`` or ``deallocShared(block)``. The block
@@ -1400,7 +1416,7 @@ when not defined(nimrodVM):
       ## is not initialized, so reading from it before writing to it is
       ## undefined behaviour!
       cast[ptr T](allocShared(T.sizeof * size))
-    proc allocShared0*(size: int): pointer {.noconv, rtl, benign.}
+    proc allocShared0*(size: Natural): pointer {.noconv, rtl, benign.}
       ## allocates a new memory block on the shared heap with at
       ## least ``size`` bytes. The block has to be freed with
       ## ``reallocShared(block, 0)`` or ``deallocShared(block)``.
@@ -1413,8 +1429,8 @@ when not defined(nimrodVM):
       ## The block is initialized with all bytes
       ## containing zero, so it is somewhat safer than ``createSharedU``.
       cast[ptr T](allocShared0(T.sizeof * size))
-    proc reallocShared*(p: pointer, newSize: int): pointer {.noconv, rtl,
-                                                             benign.}
+    proc reallocShared*(p: pointer, newSize: Natural): pointer {.noconv, rtl,
+                                                                 benign.}
       ## grows or shrinks a given memory block on the heap. If p is **nil**
       ## then a new memory block is returned. In either way the block has at
       ## least ``newSize`` bytes. If ``newSize == 0`` and p is not **nil**
@@ -1557,9 +1573,9 @@ when not defined(nimrodVM) and hostOS != "standalone":
       ## process. This is only available when threads are enabled.
 
 when sizeof(int) <= 2:
-  type IntLikeForCount = int|int8|int16|char|bool|uint8
+  type IntLikeForCount = int|int8|int16|char|bool|uint8|enum
 else:
-  type IntLikeForCount = int|int8|int16|int32|char|bool|uint8|uint16
+  type IntLikeForCount = int|int8|int16|int32|char|bool|uint8|uint16|enum
 
 iterator countdown*[T](a, b: T, step = 1): T {.inline.} =
   ## Counts from ordinal value `a` down to `b` with the given
@@ -1704,12 +1720,10 @@ iterator items*[T](a: set[T]): T {.inline.} =
   ## iterates over each element of `a`. `items` iterates only over the
   ## elements that are really in the set (and not over the ones the set is
   ## able to hold).
-  var i = low(T)
-  if i <= high(T):
-    while true:
-      if i in a: yield i
-      if i >= high(T): break
-      inc(i)
+  var i = low(T).int
+  while i <= high(T).int:
+    if T(i) in a: yield T(i)
+    inc(i)
 
 iterator items*(a: cstring): char {.inline.} =
   ## iterates over each item of `a`.
@@ -2479,37 +2493,37 @@ when not defined(JS): #and not defined(NimrodVM):
     proc getFileSize*(f: File): int64 {.tags: [ReadIOEffect], benign.}
       ## retrieves the file size (in bytes) of `f`.
 
-    proc readBytes*(f: File, a: var openArray[int8|uint8], start, len: int): int {.
+    proc readBytes*(f: File, a: var openArray[int8|uint8], start, len: Natural): int {.
       tags: [ReadIOEffect], benign.}
       ## reads `len` bytes into the buffer `a` starting at ``a[start]``. Returns
       ## the actual number of bytes that have been read which may be less than
       ## `len` (if not as many bytes are remaining), but not greater.
 
-    proc readChars*(f: File, a: var openArray[char], start, len: int): int {.
+    proc readChars*(f: File, a: var openArray[char], start, len: Natural): int {.
       tags: [ReadIOEffect], benign.}
       ## reads `len` bytes into the buffer `a` starting at ``a[start]``. Returns
       ## the actual number of bytes that have been read which may be less than
       ## `len` (if not as many bytes are remaining), but not greater.
 
-    proc readBuffer*(f: File, buffer: pointer, len: int): int {.
+    proc readBuffer*(f: File, buffer: pointer, len: Natural): int {.
       tags: [ReadIOEffect], benign.}
       ## reads `len` bytes into the buffer pointed to by `buffer`. Returns
       ## the actual number of bytes that have been read which may be less than
       ## `len` (if not as many bytes are remaining), but not greater.
 
-    proc writeBytes*(f: File, a: openArray[int8|uint8], start, len: int): int {.
+    proc writeBytes*(f: File, a: openArray[int8|uint8], start, len: Natural): int {.
       tags: [WriteIOEffect], benign.}
       ## writes the bytes of ``a[start..start+len-1]`` to the file `f`. Returns
       ## the number of actual written bytes, which may be less than `len` in case
       ## of an error.
 
-    proc writeChars*(f: File, a: openArray[char], start, len: int): int {.
+    proc writeChars*(f: File, a: openArray[char], start, len: Natural): int {.
       tags: [WriteIOEffect], benign.}
       ## writes the bytes of ``a[start..start+len-1]`` to the file `f`. Returns
       ## the number of actual written bytes, which may be less than `len` in case
       ## of an error.
 
-    proc writeBuffer*(f: File, buffer: pointer, len: int): int {.
+    proc writeBuffer*(f: File, buffer: pointer, len: Natural): int {.
       tags: [WriteIOEffect], benign.}
       ## writes the bytes of buffer pointed to by the parameter `buffer` to the
       ## file `f`. Returns the number of actual written bytes, which may be less
@@ -2531,7 +2545,7 @@ when not defined(JS): #and not defined(NimrodVM):
     when not defined(nimfix):
       {.deprecated: [fileHandle: getFileHandle].}
 
-    proc cstringArrayToSeq*(a: cstringArray, len: int): seq[string] =
+    proc cstringArrayToSeq*(a: cstringArray, len: Natural): seq[string] =
       ## converts a ``cstringArray`` to a ``seq[string]``. `a` is supposed to be
       ## of length ``len``.
       newSeq(result, len)
@@ -2801,14 +2815,14 @@ elif defined(JS):
   proc getTotalMem(): int = return -1
 
   proc dealloc(p: pointer) = discard
-  proc alloc(size: int): pointer = discard
-  proc alloc0(size: int): pointer = discard
-  proc realloc(p: pointer, newsize: int): pointer = discard
+  proc alloc(size: Natural): pointer = discard
+  proc alloc0(size: Natural): pointer = discard
+  proc realloc(p: pointer, newsize: Natural): pointer = discard
 
-  proc allocShared(size: int): pointer = discard
-  proc allocShared0(size: int): pointer = discard
+  proc allocShared(size: Natural): pointer = discard
+  proc allocShared0(size: Natural): pointer = discard
   proc deallocShared(p: pointer) = discard
-  proc reallocShared(p: pointer, newsize: int): pointer = discard
+  proc reallocShared(p: pointer, newsize: Natural): pointer = discard
 
   when defined(JS):
     include "system/jssys"
@@ -2856,28 +2870,27 @@ template spliceImpl(s, a, L, b: expr): stmt {.immediate.} =
 
 when hostOS != "standalone":
   proc `[]`*(s: string, x: Slice[int]): string {.inline.} =
-    ## slice operation for strings. Negative indexes are supported.
-    result = s.substr(x.a-|s, x.b-|s)
+    ## slice operation for strings.
+    result = s.substr(x.a, x.b)
 
   proc `[]=`*(s: var string, x: Slice[int], b: string) =
-    ## slice assignment for strings. Negative indexes are supported. If
+    ## slice assignment for strings. If
     ## ``b.len`` is not exactly the number of elements that are referred to
     ## by `x`, a `splice`:idx: is performed:
     ##
     ## .. code-block:: nim
     ##   var s = "abcdef"
-    ##   s[1 .. -2] = "xyz"
+    ##   s[1 .. ^2] = "xyz"
     ##   assert s == "axyzf"
-    var a = x.a-|s
-    var L = x.b-|s - a + 1
+    var a = x.a
+    var L = x.b - a + 1
     if L == b.len:
       for i in 0 .. <L: s[i+a] = b[i]
     else:
       spliceImpl(s, a, L, b)
 
 proc `[]`*[Idx, T](a: array[Idx, T], x: Slice[int]): seq[T] =
-  ## slice operation for arrays. Negative indexes are **not** supported
-  ## because the array might have negative bounds.
+  ## slice operation for arrays.
   when low(a) < 0:
     {.error: "Slicing for arrays with negative indices is unsupported.".}
   var L = x.b - x.a + 1
@@ -2885,8 +2898,7 @@ proc `[]`*[Idx, T](a: array[Idx, T], x: Slice[int]): seq[T] =
   for i in 0.. <L: result[i] = a[i + x.a]
 
 proc `[]=`*[Idx, T](a: var array[Idx, T], x: Slice[int], b: openArray[T]) =
-  ## slice assignment for arrays. Negative indexes are **not** supported
-  ## because the array might have negative bounds.
+  ## slice assignment for arrays.
   when low(a) < 0:
     {.error: "Slicing for arrays with negative indices is unsupported.".}
   var L = x.b - x.a + 1
@@ -2896,40 +2908,34 @@ proc `[]=`*[Idx, T](a: var array[Idx, T], x: Slice[int], b: openArray[T]) =
     sysFatal(RangeError, "different lengths for slice assignment")
 
 proc `[]`*[Idx, T](a: array[Idx, T], x: Slice[Idx]): seq[T] =
-  ## slice operation for arrays. Negative indexes are **not** supported
-  ## because the array might have negative bounds.
+  ## slice operation for arrays.
   var L = ord(x.b) - ord(x.a) + 1
   newSeq(result, L)
-  var j = x.a
   for i in 0.. <L:
-    result[i] = a[j]
-    inc(j)
+    result[i] = a[Idx(ord(x.a) + i)]
 
 proc `[]=`*[Idx, T](a: var array[Idx, T], x: Slice[Idx], b: openArray[T]) =
-  ## slice assignment for arrays. Negative indexes are **not** supported
-  ## because the array might have negative bounds.
+  ## slice assignment for arrays.
   var L = ord(x.b) - ord(x.a) + 1
   if L == b.len:
-    var j = x.a
     for i in 0 .. <L:
-      a[j] = b[i]
-      inc(j)
+      a[Idx(ord(x.a) + i)] = b[i]
   else:
     sysFatal(RangeError, "different lengths for slice assignment")
 
 proc `[]`*[T](s: seq[T], x: Slice[int]): seq[T] =
-  ## slice operation for sequences. Negative indexes are supported.
-  var a = x.a-|s
-  var L = x.b-|s - a + 1
+  ## slice operation for sequences.
+  var a = x.a
+  var L = x.b - a + 1
   newSeq(result, L)
   for i in 0.. <L: result[i] = s[i + a]
 
 proc `[]=`*[T](s: var seq[T], x: Slice[int], b: openArray[T]) =
-  ## slice assignment for sequences. Negative indexes are supported. If
+  ## slice assignment for sequences. If
   ## ``b.len`` is not exactly the number of elements that are referred to
   ## by `x`, a `splice`:idx: is performed.
-  var a = x.a-|s
-  var L = x.b-|s - a + 1
+  var a = x.a
+  var L = x.b - a + 1
   if L == b.len:
     for i in 0 .. <L: s[i+a] = b[i]
   else:
@@ -3028,8 +3034,8 @@ proc instantiationInfo*(index = -1, fullPaths = false): tuple[
   ##     result = a[pos]
   ##
   ##   when isMainModule:
-  ##     testException(EInvalidIndex, tester(30))
-  ##     testException(EInvalidIndex, tester(1))
+  ##     testException(IndexError, tester(30))
+  ##     testException(IndexError, tester(1))
   ##     # --> Test failure at example.nim:20 with 'tester(1)'
 
 template currentSourcePath*: string = instantiationInfo(-1, true).filename
@@ -3114,7 +3120,7 @@ template onFailedAssert*(msg: expr, code: stmt): stmt {.dirty, immediate.} =
   ##
   ## .. code-block:: nim
   ##
-  ##   proc example(x: int): TErrorCode =
+  ##   proc example(x: int): ErrorCode =
   ##     onFailedAssert(msg):
   ##       log msg
   ##       return E_FAIL
@@ -3122,7 +3128,7 @@ template onFailedAssert*(msg: expr, code: stmt): stmt {.dirty, immediate.} =
   ##     assert(...)
   ##
   ##     onFailedAssert(msg):
-  ##       raise newException(EMyException, msg)
+  ##       raise newException(MyError, msg)
   ##
   ##     assert(...)
   ##
@@ -3149,15 +3155,9 @@ proc shallow*(s: var string) {.noSideEffect, inline.} =
 type
   NimNodeObj = object
 
-when defined(nimnode):
-  type
-    NimNode* {.magic: "PNimrodNode".} = ref NimNodeObj
-      ## represents a Nim AST node. Macros operate on this type.
-  {.deprecated: [PNimrodNode: NimNode].}
-else:
-  type
-    PNimrodNode* {.magic: "PNimrodNode".} = ref NimNodeObj
-      ## represents a Nim AST node. Macros operate on this type.
+  NimNode* {.magic: "PNimrodNode".} = ref NimNodeObj
+    ## represents a Nim AST node. Macros operate on this type.
+{.deprecated: [PNimrodNode: NimNode].}
 
 when false:
   template eval*(blk: stmt): stmt =
@@ -3168,7 +3168,7 @@ when false:
     payload()
 
 when hostOS != "standalone":
-  proc insert*(x: var string, item: string, i = 0) {.noSideEffect.} =
+  proc insert*(x: var string, item: string, i = 0.Natural) {.noSideEffect.} =
     ## inserts `item` into `x` at position `i`.
     var xl = x.len
     setLen(x, xl+item.len)
@@ -3249,4 +3249,12 @@ proc procCall*(x: expr) {.magic: "ProcCall".} =
   ##   procCall someMethod(a, b)
   discard
 
+proc `^`*(x: int): int {.noSideEffect, magic: "Roof".} =
+  ## builtin `roof`:idx: operator that can be used for convenient array access.
+  ## ``a[^x]`` is rewritten to ``a[a.len-x]``. However currently the ``a``
+  ## expression must not have side effects for this to compile. Note that since
+  ## this is a builtin, it automatically works for all kinds of
+  ## overloaded ``[]`` or ``[]=`` accessors.
+  discard
+
 {.pop.} #{.push warning[GcMem]: off.}
diff --git a/lib/system/alloc.nim b/lib/system/alloc.nim
index fd3ced832..ad3419808 100644
--- a/lib/system/alloc.nim
+++ b/lib/system/alloc.nim
@@ -8,7 +8,7 @@
 #
 
 # Low level allocator for Nim. Has been designed to support the GC.
-# TODO: 
+# TODO:
 # - eliminate "used" field
 # - make searching for block O(1)
 {.push profiler:off.}
@@ -21,37 +21,37 @@
 # used with a size of 0:
 const weirdUnmap = not (defined(amd64) or defined(i386)) or defined(windows)
 
-when defined(posix): 
+when defined(posix):
   const
-    PROT_READ  = 1             # page can be read 
-    PROT_WRITE = 2             # page can be written 
-    MAP_PRIVATE = 2'i32        # Changes are private 
-  
+    PROT_READ  = 1             # page can be read
+    PROT_WRITE = 2             # page can be written
+    MAP_PRIVATE = 2'i32        # Changes are private
+
   when defined(macosx) or defined(bsd):
     const MAP_ANONYMOUS = 0x1000
-  elif defined(solaris): 
+  elif defined(solaris):
     const MAP_ANONYMOUS = 0x100
   else:
     var
       MAP_ANONYMOUS {.importc: "MAP_ANONYMOUS", header: "<sys/mman.h>".}: cint
-    
+
   proc mmap(adr: pointer, len: int, prot, flags, fildes: cint,
             off: int): pointer {.header: "<sys/mman.h>".}
 
   proc munmap(adr: pointer, len: int) {.header: "<sys/mman.h>".}
-  
-  proc osAllocPages(size: int): pointer {.inline.} = 
-    result = mmap(nil, size, PROT_READ or PROT_WRITE, 
+
+  proc osAllocPages(size: int): pointer {.inline.} =
+    result = mmap(nil, size, PROT_READ or PROT_WRITE,
                              MAP_PRIVATE or MAP_ANONYMOUS, -1, 0)
     if result == nil or result == cast[pointer](-1):
       raiseOutOfMem()
-      
+
   proc osDeallocPages(p: pointer, size: int) {.inline} =
     when reallyOsDealloc: munmap(p, size)
-  
-elif defined(windows): 
+
+elif defined(windows):
   const
-    MEM_RESERVE = 0x2000 
+    MEM_RESERVE = 0x2000
     MEM_COMMIT = 0x1000
     MEM_TOP_DOWN = 0x100000
     PAGE_READWRITE = 0x04
@@ -62,12 +62,12 @@ elif defined(windows):
   proc virtualAlloc(lpAddress: pointer, dwSize: int, flAllocationType,
                     flProtect: int32): pointer {.
                     header: "<windows.h>", stdcall, importc: "VirtualAlloc".}
-  
-  proc virtualFree(lpAddress: pointer, dwSize: int, 
+
+  proc virtualFree(lpAddress: pointer, dwSize: int,
                    dwFreeType: int32) {.header: "<windows.h>", stdcall,
                    importc: "VirtualFree".}
-  
-  proc osAllocPages(size: int): pointer {.inline.} = 
+
+  proc osAllocPages(size: int): pointer {.inline.} =
     result = virtualAlloc(nil, size, MEM_RESERVE or MEM_COMMIT,
                           PAGE_READWRITE)
     if result == nil: raiseOutOfMem()
@@ -82,7 +82,7 @@ elif defined(windows):
     when reallyOsDealloc: virtualFree(p, 0, MEM_RELEASE)
     #VirtualFree(p, size, MEM_DECOMMIT)
 
-else: 
+else:
   {.error: "Port memory manager to your platform".}
 
 # --------------------- end of non-portable code -----------------------------
@@ -97,17 +97,17 @@ const
   InitialMemoryRequest = ChunkOsReturn div 2 # < ChunkOsReturn!
   SmallChunkSize = PageSize
 
-type 
+type
   PTrunk = ptr TTrunk
-  TTrunk {.final.} = object 
+  TTrunk {.final.} = object
     next: PTrunk         # all nodes are connected with this pointer
     key: int             # start address at bit 0
     bits: array[0..IntsPerTrunk-1, int] # a bit vector
-  
+
   TTrunkBuckets = array[0..255, PTrunk]
-  TIntSet {.final.} = object 
+  TIntSet {.final.} = object
     data: TTrunkBuckets
-  
+
 type
   TAlignType = BiggestFloat
   TFreeCell {.final, pure.} = object
@@ -123,14 +123,14 @@ type
     prevSize: int        # size of previous chunk; for coalescing
     size: int            # if < PageSize it is a small chunk
     used: bool           # later will be optimized into prevSize...
-  
+
   TSmallChunk = object of TBaseChunk
     next, prev: PSmallChunk  # chunks of the same size
     freeList: ptr TFreeCell
-    free: int            # how many bytes remain    
+    free: int            # how many bytes remain
     acc: int             # accumulator for small object allocation
     data: TAlignType     # start of usable memory
-  
+
   TBigChunk = object of TBaseChunk # not necessarily > PageSize!
     next, prev: PBigChunk    # chunks of the same (or bigger) size
     align: int
@@ -139,7 +139,7 @@ type
 template smallChunkOverhead(): expr = sizeof(TSmallChunk)-sizeof(TAlignType)
 template bigChunkOverhead(): expr = sizeof(TBigChunk)-sizeof(TAlignType)
 
-proc roundup(x, v: int): int {.inline.} = 
+proc roundup(x, v: int): int {.inline.} =
   result = (x + (v-1)) and not (v-1)
   sysAssert(result >= x, "roundup: result < x")
   #return ((-x) and (v-1)) +% x
@@ -153,7 +153,7 @@ sysAssert(roundup(65, 8) == 72, "roundup broken 2")
 # endings of big chunks. This is needed by the merging operation. The only
 # remaining operation is best-fit for big chunks. Since there is a size-limit
 # for big chunks (because greater than the limit means they are returned back
-# to the OS), a fixed size array can be used. 
+# to the OS), a fixed size array can be used.
 
 type
   PLLChunk = ptr TLLChunk
@@ -163,21 +163,21 @@ type
     next: PLLChunk           # next low-level chunk; only needed for dealloc
 
   PAvlNode = ptr TAvlNode
-  TAvlNode {.pure, final.} = object 
-    link: array[0..1, PAvlNode] # Left (0) and right (1) links 
+  TAvlNode {.pure, final.} = object
+    link: array[0..1, PAvlNode] # Left (0) and right (1) links
     key, upperBound: int
     level: int
-    
+
   TMemRegion {.final, pure.} = object
     minLargeObj, maxLargeObj: int
     freeSmallChunks: array[0..SmallChunkSize div MemAlign-1, PSmallChunk]
     llmem: PLLChunk
     currMem, maxMem, freeMem: int # memory sizes (allocated from OS)
-    lastSize: int # needed for the case that OS gives us pages linearly 
+    lastSize: int # needed for the case that OS gives us pages linearly
     freeChunksList: PBigChunk # XXX make this a datastructure with O(1) access
     chunkStarts: TIntSet
     root, deleted, last, freeAvlNodes: PAvlNode
-  
+
 # shared:
 var
   bottomData: TAvlNode
@@ -191,7 +191,7 @@ proc initAllocator() =
     bottom.link[1] = bottom
 {.pop.}
 
-proc incCurrMem(a: var TMemRegion, bytes: int) {.inline.} = 
+proc incCurrMem(a: var TMemRegion, bytes: int) {.inline.} =
   inc(a.currMem, bytes)
 
 proc decCurrMem(a: var TMemRegion, bytes: int) {.inline.} =
@@ -199,11 +199,11 @@ proc decCurrMem(a: var TMemRegion, bytes: int) {.inline.} =
   dec(a.currMem, bytes)
 
 proc getMaxMem(a: var TMemRegion): int =
-  # Since we update maxPagesCount only when freeing pages, 
+  # Since we update maxPagesCount only when freeing pages,
   # maxPagesCount may not be up to date. Thus we use the
   # maximum of these both values here:
   result = max(a.currMem, a.maxMem)
-  
+
 proc llAlloc(a: var TMemRegion, size: int): pointer =
   # *low-level* alloc for the memory managers data structures. Deallocation
   # is done at he end of the allocator's life time.
@@ -251,15 +251,15 @@ proc llDeallocAll(a: var TMemRegion) =
     var next = it.next
     osDeallocPages(it, PageSize)
     it = next
-  
-proc intSetGet(t: TIntSet, key: int): PTrunk = 
+
+proc intSetGet(t: TIntSet, key: int): PTrunk =
   var it = t.data[key and high(t.data)]
-  while it != nil: 
+  while it != nil:
     if it.key == key: return it
     it = it.next
   result = nil
 
-proc intSetPut(a: var TMemRegion, t: var TIntSet, key: int): PTrunk = 
+proc intSetPut(a: var TMemRegion, t: var TIntSet, key: int): PTrunk =
   result = intSetGet(t, key)
   if result == nil:
     result = cast[PTrunk](llAlloc(a, sizeof(result[])))
@@ -267,20 +267,20 @@ proc intSetPut(a: var TMemRegion, t: var TIntSet, key: int): PTrunk =
     t.data[key and high(t.data)] = result
     result.key = key
 
-proc contains(s: TIntSet, key: int): bool = 
+proc contains(s: TIntSet, key: int): bool =
   var t = intSetGet(s, key shr TrunkShift)
-  if t != nil: 
+  if t != nil:
     var u = key and TrunkMask
     result = (t.bits[u shr IntShift] and (1 shl (u and IntMask))) != 0
-  else: 
+  else:
     result = false
-  
-proc incl(a: var TMemRegion, s: var TIntSet, key: int) = 
+
+proc incl(a: var TMemRegion, s: var TIntSet, key: int) =
   var t = intSetPut(a, s, key shr TrunkShift)
   var u = key and TrunkMask
   t.bits[u shr IntShift] = t.bits[u shr IntShift] or (1 shl (u and IntMask))
 
-proc excl(s: var TIntSet, key: int) = 
+proc excl(s: var TIntSet, key: int) =
   var t = intSetGet(s, key shr TrunkShift)
   if t != nil:
     var u = key and TrunkMask
@@ -304,11 +304,11 @@ iterator elements(t: TIntSet): int {.inline.} =
           w = w shr 1
         inc(i)
       r = r.next
-  
-proc isSmallChunk(c: PChunk): bool {.inline.} = 
+
+proc isSmallChunk(c: PChunk): bool {.inline.} =
   return c.size <= SmallChunkSize-smallChunkOverhead()
-  
-proc chunkUnused(c: PChunk): bool {.inline.} = 
+
+proc chunkUnused(c: PChunk): bool {.inline.} =
   result = not c.used
 
 iterator allObjects(m: TMemRegion): pointer {.inline.} =
@@ -319,7 +319,7 @@ iterator allObjects(m: TMemRegion): pointer {.inline.} =
       if not chunkUnused(c):
         if isSmallChunk(c):
           var c = cast[PSmallChunk](c)
-          
+
           let size = c.size
           var a = cast[ByteAddress](addr(c.data))
           let limit = a + c.acc
@@ -334,17 +334,17 @@ proc isCell(p: pointer): bool {.inline.} =
   result = cast[ptr TFreeCell](p).zeroField >% 1
 
 # ------------- chunk management ----------------------------------------------
-proc pageIndex(c: PChunk): int {.inline.} = 
+proc pageIndex(c: PChunk): int {.inline.} =
   result = cast[ByteAddress](c) shr PageShift
 
-proc pageIndex(p: pointer): int {.inline.} = 
+proc pageIndex(p: pointer): int {.inline.} =
   result = cast[ByteAddress](p) shr PageShift
 
-proc pageAddr(p: pointer): PChunk {.inline.} = 
+proc pageAddr(p: pointer): PChunk {.inline.} =
   result = cast[PChunk](cast[ByteAddress](p) and not PageMask)
   #sysAssert(Contains(allocator.chunkStarts, pageIndex(result)))
 
-proc requestOsChunks(a: var TMemRegion, size: int): PBigChunk = 
+proc requestOsChunks(a: var TMemRegion, size: int): PBigChunk =
   incCurrMem(a, size)
   inc(a.freeMem, size)
   result = cast[PBigChunk](osAllocPages(size))
@@ -373,7 +373,7 @@ proc requestOsChunks(a: var TMemRegion, size: int): PBigChunk =
     result.prevSize = 0 # unknown
   a.lastSize = size # for next request
 
-proc freeOsChunks(a: var TMemRegion, p: pointer, size: int) = 
+proc freeOsChunks(a: var TMemRegion, p: pointer, size: int) =
   # update next.prevSize:
   var c = cast[PChunk](p)
   var nxt = cast[ByteAddress](p) +% c.size
@@ -387,36 +387,36 @@ proc freeOsChunks(a: var TMemRegion, p: pointer, size: int) =
   dec(a.freeMem, size)
   #c_fprintf(c_stdout, "[Alloc] back to OS: %ld\n", size)
 
-proc isAccessible(a: TMemRegion, p: pointer): bool {.inline.} = 
+proc isAccessible(a: TMemRegion, p: pointer): bool {.inline.} =
   result = contains(a.chunkStarts, pageIndex(p))
 
-proc contains[T](list, x: T): bool = 
+proc contains[T](list, x: T): bool =
   var it = list
   while it != nil:
     if it == x: return true
     it = it.next
-    
+
 proc writeFreeList(a: TMemRegion) =
   var it = a.freeChunksList
   c_fprintf(c_stdout, "freeChunksList: %p\n", it)
-  while it != nil: 
-    c_fprintf(c_stdout, "it: %p, next: %p, prev: %p\n", 
+  while it != nil:
+    c_fprintf(c_stdout, "it: %p, next: %p, prev: %p\n",
               it, it.next, it.prev)
     it = it.next
 
-proc listAdd[T](head: var T, c: T) {.inline.} = 
+proc listAdd[T](head: var T, c: T) {.inline.} =
   sysAssert(c notin head, "listAdd 1")
   sysAssert c.prev == nil, "listAdd 2"
   sysAssert c.next == nil, "listAdd 3"
   c.next = head
-  if head != nil: 
+  if head != nil:
     sysAssert head.prev == nil, "listAdd 4"
     head.prev = c
   head = c
 
 proc listRemove[T](head: var T, c: T) {.inline.} =
   sysAssert(c in head, "listRemove")
-  if c == head: 
+  if c == head:
     head = c.next
     sysAssert c.prev == nil, "listRemove 2"
     if head != nil: head.prev = nil
@@ -426,15 +426,15 @@ proc listRemove[T](head: var T, c: T) {.inline.} =
     if c.next != nil: c.next.prev = c.prev
   c.next = nil
   c.prev = nil
-  
-proc updatePrevSize(a: var TMemRegion, c: PBigChunk, 
-                    prevSize: int) {.inline.} = 
+
+proc updatePrevSize(a: var TMemRegion, c: PBigChunk,
+                    prevSize: int) {.inline.} =
   var ri = cast[PChunk](cast[ByteAddress](c) +% c.size)
   sysAssert((cast[ByteAddress](ri) and PageMask) == 0, "updatePrevSize")
   if isAccessible(a, ri):
     ri.prevSize = prevSize
-  
-proc freeBigChunk(a: var TMemRegion, c: PBigChunk) = 
+
+proc freeBigChunk(a: var TMemRegion, c: PBigChunk) =
   var c = c
   sysAssert(c.size >= PageSize, "freeBigChunk")
   inc(a.freeMem, c.size)
@@ -448,7 +448,7 @@ proc freeBigChunk(a: var TMemRegion, c: PBigChunk) =
         inc(c.size, ri.size)
         excl(a.chunkStarts, pageIndex(ri))
   when coalescLeft:
-    if c.prevSize != 0: 
+    if c.prevSize != 0:
       var le = cast[PChunk](cast[ByteAddress](c) -% c.prevSize)
       sysAssert((cast[ByteAddress](le) and PageMask) == 0, "freeBigChunk 4")
       if isAccessible(a, le) and chunkUnused(le):
@@ -467,7 +467,7 @@ proc freeBigChunk(a: var TMemRegion, c: PBigChunk) =
   else:
     freeOsChunks(a, c, c.size)
 
-proc splitChunk(a: var TMemRegion, c: PBigChunk, size: int) = 
+proc splitChunk(a: var TMemRegion, c: PBigChunk, size: int) =
   var rest = cast[PBigChunk](cast[ByteAddress](c) +% size)
   sysAssert(rest notin a.freeChunksList, "splitChunk")
   rest.size = c.size - size
@@ -480,7 +480,7 @@ proc splitChunk(a: var TMemRegion, c: PBigChunk, size: int) =
   incl(a, a.chunkStarts, pageIndex(rest))
   listAdd(a.freeChunksList, rest)
 
-proc getBigChunk(a: var TMemRegion, size: int): PBigChunk = 
+proc getBigChunk(a: var TMemRegion, size: int): PBigChunk =
   # use first fit for now:
   sysAssert((size and PageMask) == 0, "getBigChunk 1")
   sysAssert(size > 0, "getBigChunk 2")
@@ -488,7 +488,7 @@ proc getBigChunk(a: var TMemRegion, size: int): PBigChunk =
   block search:
     while result != nil:
       sysAssert chunkUnused(result), "getBigChunk 3"
-      if result.size == size: 
+      if result.size == size:
         listRemove(a.freeChunksList, result)
         break search
       elif result.size > size:
@@ -497,7 +497,7 @@ proc getBigChunk(a: var TMemRegion, size: int): PBigChunk =
         break search
       result = result.next
       sysAssert result != a.freeChunksList, "getBigChunk 4"
-    if size < InitialMemoryRequest: 
+    if size < InitialMemoryRequest:
       result = requestOsChunks(a, InitialMemoryRequest)
       splitChunk(a, result, size)
     else:
@@ -507,7 +507,7 @@ proc getBigChunk(a: var TMemRegion, size: int): PBigChunk =
   incl(a, a.chunkStarts, pageIndex(result))
   dec(a.freeMem, size)
 
-proc getSmallChunk(a: var TMemRegion): PSmallChunk = 
+proc getSmallChunk(a: var TMemRegion): PSmallChunk =
   var res = getBigChunk(a, PageSize)
   sysAssert res.prev == nil, "getSmallChunk 1"
   sysAssert res.next == nil, "getSmallChunk 2"
@@ -521,15 +521,15 @@ proc allocInv(a: TMemRegion): bool =
   for s in low(a.freeSmallChunks)..high(a.freeSmallChunks):
     var c = a.freeSmallChunks[s]
     while c != nil:
-      if c.next == c: 
+      if c.next == c:
         echo "[SYSASSERT] c.next == c"
         return false
-      if c.size != s * MemAlign: 
+      if c.size != s * MemAlign:
         echo "[SYSASSERT] c.size != s * MemAlign"
         return false
       var it = c.freeList
       while it != nil:
-        if it.zeroField != 0: 
+        if it.zeroField != 0:
           echo "[SYSASSERT] it.zeroField != 0"
           c_printf("%ld %p\n", it.zeroField, it)
           return false
@@ -539,16 +539,16 @@ proc allocInv(a: TMemRegion): bool =
 
 proc rawAlloc(a: var TMemRegion, requestedSize: int): pointer =
   sysAssert(allocInv(a), "rawAlloc: begin")
-  sysAssert(roundup(65, 8) == 72, "rawAlloc 1")
-  sysAssert requestedSize >= sizeof(TFreeCell), "rawAlloc 2"
+  sysAssert(roundup(65, 8) == 72, "rawAlloc: roundup broken")
+  sysAssert(requestedSize >= sizeof(TFreeCell), "rawAlloc: requested size too small")
   var size = roundup(requestedSize, MemAlign)
   sysAssert(size >= requestedSize, "insufficient allocated size!")
   #c_fprintf(c_stdout, "alloc; size: %ld; %ld\n", requestedSize, size)
-  if size <= SmallChunkSize-smallChunkOverhead(): 
+  if size <= SmallChunkSize-smallChunkOverhead():
     # allocate a small block: for small chunks, we use only its next pointer
     var s = size div MemAlign
     var c = a.freeSmallChunks[s]
-    if c == nil: 
+    if c == nil:
       c = getSmallChunk(a)
       c.freeList = nil
       sysAssert c.size == PageSize, "rawAlloc 3"
@@ -567,7 +567,7 @@ proc rawAlloc(a: var TMemRegion, requestedSize: int): pointer =
       #  c_fprintf(c_stdout, "csize: %lld; size %lld\n", c.size, size)
       sysAssert c.size == size, "rawAlloc 6"
       if c.freeList == nil:
-        sysAssert(c.acc + smallChunkOverhead() + size <= SmallChunkSize, 
+        sysAssert(c.acc + smallChunkOverhead() + size <= SmallChunkSize,
                   "rawAlloc 7")
         result = cast[pointer](cast[ByteAddress](addr(c.data)) +% c.acc)
         inc(c.acc, size)
@@ -621,9 +621,9 @@ proc rawDealloc(a: var TMemRegion, p: pointer) =
     f.zeroField = 0
     f.next = c.freeList
     c.freeList = f
-    when overwriteFree: 
+    when overwriteFree:
       # set to 0xff to check for usage after free bugs:
-      c_memset(cast[pointer](cast[int](p) +% sizeof(TFreeCell)), -1'i32, 
+      c_memset(cast[pointer](cast[int](p) +% sizeof(TFreeCell)), -1'i32,
                s -% sizeof(TFreeCell))
     # check if it is not in the freeSmallChunks[s] list:
     if c.free < s:
@@ -649,13 +649,13 @@ proc rawDealloc(a: var TMemRegion, p: pointer) =
   sysAssert(allocInv(a), "rawDealloc: end")
   when logAlloc: cprintf("rawDealloc: %p\n", p)
 
-proc isAllocatedPtr(a: TMemRegion, p: pointer): bool = 
+proc isAllocatedPtr(a: TMemRegion, p: pointer): bool =
   if isAccessible(a, p):
     var c = pageAddr(p)
     if not chunkUnused(c):
       if isSmallChunk(c):
         var c = cast[PSmallChunk](c)
-        var offset = (cast[ByteAddress](p) and (PageSize-1)) -% 
+        var offset = (cast[ByteAddress](p) and (PageSize-1)) -%
                      smallChunkOverhead()
         result = (c.acc >% offset) and (offset %% c.size == 0) and
           (cast[ptr TFreeCell](p).zeroField >% 1)
@@ -673,12 +673,12 @@ proc interiorAllocatedPtr(a: TMemRegion, p: pointer): pointer =
     if not chunkUnused(c):
       if isSmallChunk(c):
         var c = cast[PSmallChunk](c)
-        var offset = (cast[ByteAddress](p) and (PageSize-1)) -% 
+        var offset = (cast[ByteAddress](p) and (PageSize-1)) -%
                      smallChunkOverhead()
         if c.acc >% offset:
           sysAssert(cast[ByteAddress](addr(c.data)) +% offset ==
                     cast[ByteAddress](p), "offset is not what you think it is")
-          var d = cast[ptr TFreeCell](cast[ByteAddress](addr(c.data)) +% 
+          var d = cast[ptr TFreeCell](cast[ByteAddress](addr(c.data)) +%
                     offset -% (offset %% c.size))
           if d.zeroField >% 1:
             result = d
@@ -711,13 +711,13 @@ proc ptrSize(p: pointer): int =
   if not isSmallChunk(c):
     dec result, bigChunkOverhead()
 
-proc alloc(allocator: var TMemRegion, size: int): pointer =
+proc alloc(allocator: var TMemRegion, size: Natural): pointer =
   result = rawAlloc(allocator, size+sizeof(TFreeCell))
   cast[ptr TFreeCell](result).zeroField = 1 # mark it as used
   sysAssert(not isAllocatedPtr(allocator, result), "alloc")
   result = cast[pointer](cast[ByteAddress](result) +% sizeof(TFreeCell))
 
-proc alloc0(allocator: var TMemRegion, size: int): pointer =
+proc alloc0(allocator: var TMemRegion, size: Natural): pointer =
   result = alloc(allocator, size)
   zeroMem(result, size)
 
@@ -730,7 +730,7 @@ proc dealloc(allocator: var TMemRegion, p: pointer) =
   rawDealloc(allocator, x)
   sysAssert(not isAllocatedPtr(allocator, x), "dealloc 3")
 
-proc realloc(allocator: var TMemRegion, p: pointer, newsize: int): pointer =
+proc realloc(allocator: var TMemRegion, p: pointer, newsize: Natural): pointer =
   if newsize > 0:
     result = alloc0(allocator, newsize)
     if p != nil:
@@ -758,7 +758,7 @@ proc deallocOsPages(a: var TMemRegion) =
 
 proc getFreeMem(a: TMemRegion): int {.inline.} = result = a.freeMem
 proc getTotalMem(a: TMemRegion): int {.inline.} = result = a.currMem
-proc getOccupiedMem(a: TMemRegion): int {.inline.} = 
+proc getOccupiedMem(a: TMemRegion): int {.inline.} =
   result = a.currMem - a.freeMem
 
 # ---------------------- thread memory region -------------------------------
@@ -774,16 +774,16 @@ template instantiateForRegion(allocator: expr) =
 
   proc deallocOsPages = deallocOsPages(allocator)
 
-  proc alloc(size: int): pointer =
+  proc alloc(size: Natural): pointer =
     result = alloc(allocator, size)
 
-  proc alloc0(size: int): pointer =
+  proc alloc0(size: Natural): pointer =
     result = alloc0(allocator, size)
 
   proc dealloc(p: pointer) =
     dealloc(allocator, p)
 
-  proc realloc(p: pointer, newsize: int): pointer =
+  proc realloc(p: pointer, newsize: Natural): pointer =
     result = realloc(allocator, p, newSize)
 
   when false:
@@ -794,7 +794,7 @@ template instantiateForRegion(allocator: expr) =
         inc(result, it.size)
         it = it.next
 
-  proc getFreeMem(): int = 
+  proc getFreeMem(): int =
     result = allocator.freeMem
     #sysAssert(result == countFreeMem())
 
@@ -807,7 +807,7 @@ template instantiateForRegion(allocator: expr) =
     var heapLock: TSysLock
     initSysLock(heapLock)
 
-  proc allocShared(size: int): pointer =
+  proc allocShared(size: Natural): pointer =
     when hasThreadSupport:
       acquireSys(heapLock)
       result = alloc(sharedHeap, size)
@@ -815,20 +815,20 @@ template instantiateForRegion(allocator: expr) =
     else:
       result = alloc(size)
 
-  proc allocShared0(size: int): pointer =
+  proc allocShared0(size: Natural): pointer =
     result = allocShared(size)
     zeroMem(result, size)
 
   proc deallocShared(p: pointer) =
-    when hasThreadSupport: 
+    when hasThreadSupport:
       acquireSys(heapLock)
       dealloc(sharedHeap, p)
       releaseSys(heapLock)
     else:
       dealloc(p)
 
-  proc reallocShared(p: pointer, newsize: int): pointer =
-    when hasThreadSupport: 
+  proc reallocShared(p: pointer, newsize: Natural): pointer =
+    when hasThreadSupport:
       acquireSys(heapLock)
       result = realloc(sharedHeap, p, newsize)
       releaseSys(heapLock)
diff --git a/lib/system/atomics.nim b/lib/system/atomics.nim
index ac30bd8dd..300fa85f3 100644
--- a/lib/system/atomics.nim
+++ b/lib/system/atomics.nim
@@ -21,19 +21,19 @@ when someGcc and hasThreadSupport:
     ## synchronization with another thread.
   var ATOMIC_ACQUIRE* {.importc: "__ATOMIC_ACQUIRE", nodecl.}: AtomMemModel
     ## Barrier to hoisting of code and synchronizes with
-    ## release (or stronger) 
+    ## release (or stronger)
     ## semantic stores from another thread.
   var ATOMIC_RELEASE* {.importc: "__ATOMIC_RELEASE", nodecl.}: AtomMemModel
     ## Barrier to sinking of code and synchronizes with
-    ## acquire (or stronger) 
-    ## semantic loads from another thread. 
+    ## acquire (or stronger)
+    ## semantic loads from another thread.
   var ATOMIC_ACQ_REL* {.importc: "__ATOMIC_ACQ_REL", nodecl.}: AtomMemModel
     ## Full barrier in both directions and synchronizes
-    ## with acquire loads 
+    ## with acquire loads
     ## and release stores in another thread.
   var ATOMIC_SEQ_CST* {.importc: "__ATOMIC_SEQ_CST", nodecl.}: AtomMemModel
     ## Full barrier in both directions and synchronizes
-    ## with acquire loads 
+    ## with acquire loads
     ## and release stores in all threads.
 
   type
@@ -46,11 +46,11 @@ when someGcc and hasThreadSupport:
     ## ATOMIC_RELAXED, ATOMIC_SEQ_CST, ATOMIC_ACQUIRE, ATOMIC_CONSUME.
 
   proc atomicLoad*[T: TAtomType](p, ret: ptr T, mem: AtomMemModel) {.
-    importc: "__atomic_load", nodecl.}  
+    importc: "__atomic_load", nodecl.}
     ## This is the generic version of an atomic load. It returns the contents at p in ret.
 
   proc atomicStoreN*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel) {.
-    importc: "__atomic_store_n", nodecl.} 
+    importc: "__atomic_store_n", nodecl.}
     ## This proc implements an atomic store operation. It writes val at p.
     ## ATOMIC_RELAXED, ATOMIC_SEQ_CST, and ATOMIC_RELEASE.
 
@@ -60,39 +60,39 @@ when someGcc and hasThreadSupport:
 
   proc atomicExchangeN*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_exchange_n", nodecl.}
-    ## This proc implements an atomic exchange operation. It writes val at p, 
+    ## This proc implements an atomic exchange operation. It writes val at p,
     ## and returns the previous contents at p.
     ## ATOMIC_RELAXED, ATOMIC_SEQ_CST, ATOMIC_ACQUIRE, ATOMIC_RELEASE, ATOMIC_ACQ_REL
 
   proc atomicExchange*[T: TAtomType](p, val, ret: ptr T, mem: AtomMemModel) {.
     importc: "__atomic_exchange", nodecl.}
-    ## This is the generic version of an atomic exchange. It stores the contents at val at p. 
+    ## This is the generic version of an atomic exchange. It stores the contents at val at p.
     ## The original value at p is copied into ret.
 
   proc atomicCompareExchangeN*[T: TAtomType](p, expected: ptr T, desired: T,
     weak: bool, success_memmodel: AtomMemModel, failure_memmodel: AtomMemModel): bool {.
-    importc: "__atomic_compare_exchange_n ", nodecl.} 
+    importc: "__atomic_compare_exchange_n ", nodecl.}
     ## This proc implements an atomic compare and exchange operation. This compares the
-    ## contents at p with the contents at expected and if equal, writes desired at p. 
-    ## If they are not equal, the current contents at p is written into expected. 
-    ## Weak is true for weak compare_exchange, and false for the strong variation. 
-    ## Many targets only offer the strong variation and ignore the parameter. 
+    ## contents at p with the contents at expected and if equal, writes desired at p.
+    ## If they are not equal, the current contents at p is written into expected.
+    ## Weak is true for weak compare_exchange, and false for the strong variation.
+    ## Many targets only offer the strong variation and ignore the parameter.
     ## When in doubt, use the strong variation.
-    ## True is returned if desired is written at p and the execution is considered 
-    ## to conform to the memory model specified by success_memmodel. There are no 
-    ## restrictions on what memory model can be used here. False is returned otherwise, 
-    ## and the execution is considered to conform to failure_memmodel. This memory model 
-    ## cannot be __ATOMIC_RELEASE nor __ATOMIC_ACQ_REL. It also cannot be a stronger model 
+    ## True is returned if desired is written at p and the execution is considered
+    ## to conform to the memory model specified by success_memmodel. There are no
+    ## restrictions on what memory model can be used here. False is returned otherwise,
+    ## and the execution is considered to conform to failure_memmodel. This memory model
+    ## cannot be __ATOMIC_RELEASE nor __ATOMIC_ACQ_REL. It also cannot be a stronger model
     ## than that specified by success_memmodel.
 
   proc atomicCompareExchange*[T: TAtomType](p, expected, desired: ptr T,
     weak: bool, success_memmodel: AtomMemModel, failure_memmodel: AtomMemModel): bool {.
-    importc: "__atomic_compare_exchange_n ", nodecl.}  
-    ## This proc implements the generic version of atomic_compare_exchange. 
-    ## The proc is virtually identical to atomic_compare_exchange_n, except the desired 
-    ## value is also a pointer. 
+    importc: "__atomic_compare_exchange_n ", nodecl.}
+    ## This proc implements the generic version of atomic_compare_exchange.
+    ## The proc is virtually identical to atomic_compare_exchange_n, except the desired
+    ## value is also a pointer.
 
-  ## Perform the operation return the new value, all memory models are valid 
+  ## Perform the operation return the new value, all memory models are valid
   proc atomicAddFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_add_fetch", nodecl.}
   proc atomicSubFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
@@ -101,64 +101,64 @@ when someGcc and hasThreadSupport:
     importc: "__atomic_or_fetch ", nodecl.}
   proc atomicAndFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_and_fetch", nodecl.}
-  proc atomicXorFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.   
+  proc atomicXorFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_xor_fetch", nodecl.}
-  proc atomicNandFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.   
-    importc: "__atomic_nand_fetch ", nodecl.} 
+  proc atomicNandFetch*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
+    importc: "__atomic_nand_fetch ", nodecl.}
 
-  ## Perform the operation return the old value, all memory models are valid 
+  ## Perform the operation return the old value, all memory models are valid
   proc atomicFetchAdd*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_fetch_add", nodecl.}
-  proc atomicFetchSub*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.  
+  proc atomicFetchSub*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_fetch_sub", nodecl.}
-  proc atomicFetchOr*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.  
+  proc atomicFetchOr*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_fetch_or", nodecl.}
-  proc atomicFetchAnd*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.   
+  proc atomicFetchAnd*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_fetch_and", nodecl.}
-  proc atomicFetchXor*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.  
+  proc atomicFetchXor*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
     importc: "__atomic_fetch_xor", nodecl.}
-  proc atomicFetchNand*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.  
-    importc: "__atomic_fetch_nand", nodecl.} 
+  proc atomicFetchNand*[T: TAtomType](p: ptr T, val: T, mem: AtomMemModel): T {.
+    importc: "__atomic_fetch_nand", nodecl.}
 
-  proc atomicTestAndSet*(p: pointer, mem: AtomMemModel): bool {.  
-    importc: "__atomic_test_and_set", nodecl.} 
-    ## This built-in function performs an atomic test-and-set operation on the byte at p. 
+  proc atomicTestAndSet*(p: pointer, mem: AtomMemModel): bool {.
+    importc: "__atomic_test_and_set", nodecl.}
+    ## This built-in function performs an atomic test-and-set operation on the byte at p.
     ## The byte is set to some implementation defined nonzero “set” value and the return
     ## value is true if and only if the previous contents were “set”.
     ## All memory models are valid.
 
-  proc atomicClear*(p: pointer, mem: AtomMemModel) {.  
+  proc atomicClear*(p: pointer, mem: AtomMemModel) {.
     importc: "__atomic_clear", nodecl.}
-    ## This built-in function performs an atomic clear operation at p. 
+    ## This built-in function performs an atomic clear operation at p.
     ## After the operation, at p contains 0.
     ## ATOMIC_RELAXED, ATOMIC_SEQ_CST, ATOMIC_RELEASE
 
-  proc atomicThreadFence*(mem: AtomMemModel) {.  
+  proc atomicThreadFence*(mem: AtomMemModel) {.
     importc: "__atomic_thread_fence", nodecl.}
-    ## This built-in function acts as a synchronization fence between threads based 
+    ## This built-in function acts as a synchronization fence between threads based
     ## on the specified memory model. All memory orders are valid.
 
-  proc atomicSignalFence*(mem: AtomMemModel) {.  
+  proc atomicSignalFence*(mem: AtomMemModel) {.
     importc: "__atomic_signal_fence", nodecl.}
-    ## This built-in function acts as a synchronization fence between a thread and 
+    ## This built-in function acts as a synchronization fence between a thread and
     ## signal handlers based in the same thread. All memory orders are valid.
 
-  proc atomicAlwaysLockFree*(size: int, p: pointer): bool {.  
+  proc atomicAlwaysLockFree*(size: int, p: pointer): bool {.
     importc: "__atomic_always_lock_free", nodecl.}
-    ## This built-in function returns true if objects of size bytes always generate 
-    ## lock free atomic instructions for the target architecture. size must resolve 
+    ## This built-in function returns true if objects of size bytes always generate
+    ## lock free atomic instructions for the target architecture. size must resolve
     ## to a compile-time constant and the result also resolves to a compile-time constant.
-    ## ptr is an optional pointer to the object that may be used to determine alignment. 
-    ## A value of 0 indicates typical alignment should be used. The compiler may also 
+    ## ptr is an optional pointer to the object that may be used to determine alignment.
+    ## A value of 0 indicates typical alignment should be used. The compiler may also
     ## ignore this parameter.
 
-  proc atomicIsLockFree*(size: int, p: pointer): bool {.  
+  proc atomicIsLockFree*(size: int, p: pointer): bool {.
     importc: "__atomic_is_lock_free", nodecl.}
-    ## This built-in function returns true if objects of size bytes always generate 
-    ## lock free atomic instructions for the target architecture. If it is not known 
+    ## This built-in function returns true if objects of size bytes always generate
+    ## lock free atomic instructions for the target architecture. If it is not known
     ## to be lock free a call is made to a runtime routine named __atomic_is_lock_free.
-    ## ptr is an optional pointer to the object that may be used to determine alignment. 
-    ## A value of 0 indicates typical alignment should be used. The compiler may also 
+    ## ptr is an optional pointer to the object that may be used to determine alignment.
+    ## A value of 0 indicates typical alignment should be used. The compiler may also
     ## ignore this parameter.
 
   template fence*() = atomicThreadFence(ATOMIC_SEQ_CST)
@@ -178,7 +178,7 @@ proc atomicInc*(memLoc: var int, x: int = 1): int =
   else:
     inc(memLoc, x)
     result = memLoc
-  
+
 proc atomicDec*(memLoc: var int, x: int = 1): int =
   when someGcc and hasThreadSupport:
     when declared(atomic_sub_fetch):
@@ -206,6 +206,9 @@ else:
 when (defined(x86) or defined(amd64)) and someGcc:
   proc cpuRelax* {.inline.} =
     {.emit: """asm volatile("pause" ::: "memory");""".}
+elif someGcc:
+  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):
diff --git a/lib/system/gc_ms.nim b/lib/system/gc_ms.nim
index 12eb97b1e..e287bf5d9 100644
--- a/lib/system/gc_ms.nim
+++ b/lib/system/gc_ms.nim
@@ -165,7 +165,7 @@ proc initGC() =
     init(gch.tempStack)
     init(gch.additionalRoots)
     when withBitvectors:
-      Init(gch.allocated)
+      init(gch.allocated)
       init(gch.marked)
 
 var
diff --git a/lib/system/jssys.nim b/lib/system/jssys.nim
index 15b00f8f1..3b55f62ca 100644
--- a/lib/system/jssys.nim
+++ b/lib/system/jssys.nim
@@ -322,10 +322,10 @@ when defined(kwin):
       }
       print(buf);
     """
-    
+
 elif defined(nodejs):
   proc ewriteln(x: cstring) = log(x)
-  
+
   proc rawEcho {.compilerproc, asmNoStackFrame.} =
     asm """
       var buf = "";
@@ -339,12 +339,12 @@ else:
   var
     document {.importc, nodecl.}: ref TDocument
 
-  proc ewriteln(x: cstring) = 
+  proc ewriteln(x: cstring) =
     var node = document.getElementsByTagName("body")[0]
-    if node != nil: 
+    if node != nil:
       node.appendChild(document.createTextNode(x))
       node.appendChild(document.createElement("br"))
-    else: 
+    else:
       raise newException(ValueError, "<body> element does not exist yet!")
 
   proc rawEcho {.compilerproc.} =
@@ -563,7 +563,11 @@ proc nimCopy(x: pointer, ti: PNimType): pointer =
       }
     """
   of tyString:
-    asm "`result` = `x`.slice(0);"
+    asm """
+      if (`x` !== null) {
+        `result` = `x`.slice(0);
+      }
+    """
   else:
     result = x
 
@@ -679,7 +683,7 @@ proc nimParseBiggestFloat(s: string, number: var BiggestFloat, start = 0): int {
   if s[i] == 'I' or s[i] == 'i':
     if s[i+1] == 'N' or s[i+1] == 'n':
       if s[i+2] == 'F' or s[i+2] == 'f':
-        if s[i+3] notin IdentChars: 
+        if s[i+3] notin IdentChars:
           number = Inf*sign
           return i+3 - start
     return 0
diff --git a/lib/system/mmdisp.nim b/lib/system/mmdisp.nim
index 84e532049..a378f86e7 100644
--- a/lib/system/mmdisp.nim
+++ b/lib/system/mmdisp.nim
@@ -109,24 +109,24 @@ when defined(boehmgc):
 
   when not defined(useNimRtl):
 
-    proc alloc(size: int): pointer =
+    proc alloc(size: Natural): pointer =
       result = boehmAlloc(size)
       if result == nil: raiseOutOfMem()
-    proc alloc0(size: int): pointer =
+    proc alloc0(size: Natural): pointer =
       result = alloc(size)
       zeroMem(result, size)
-    proc realloc(p: pointer, newsize: int): pointer =
+    proc realloc(p: pointer, newsize: Natural): pointer =
       result = boehmRealloc(p, newsize)
       if result == nil: raiseOutOfMem()
     proc dealloc(p: pointer) = boehmDealloc(p)
 
-    proc allocShared(size: int): pointer =
+    proc allocShared(size: Natural): pointer =
       result = boehmAlloc(size)
       if result == nil: raiseOutOfMem()
-    proc allocShared0(size: int): pointer =
+    proc allocShared0(size: Natural): pointer =
       result = alloc(size)
       zeroMem(result, size)
-    proc reallocShared(p: pointer, newsize: int): pointer =
+    proc reallocShared(p: pointer, newsize: Natural): pointer =
       result = boehmRealloc(p, newsize)
       if result == nil: raiseOutOfMem()
     proc deallocShared(p: pointer) = boehmDealloc(p)
@@ -196,24 +196,24 @@ when defined(boehmgc):
 elif defined(nogc) and defined(useMalloc):
 
   when not defined(useNimRtl):
-    proc alloc(size: int): pointer =
+    proc alloc(size: Natural): pointer =
       result = cmalloc(size)
       if result == nil: raiseOutOfMem()
-    proc alloc0(size: int): pointer =
+    proc alloc0(size: Natural): pointer =
       result = alloc(size)
       zeroMem(result, size)
-    proc realloc(p: pointer, newsize: int): pointer =
+    proc realloc(p: pointer, newsize: Natural): pointer =
       result = crealloc(p, newsize)
       if result == nil: raiseOutOfMem()
     proc dealloc(p: pointer) = cfree(p)
 
-    proc allocShared(size: int): pointer =
+    proc allocShared(size: Natural): pointer =
       result = cmalloc(size)
       if result == nil: raiseOutOfMem()
-    proc allocShared0(size: int): pointer =
+    proc allocShared0(size: Natural): pointer =
       result = alloc(size)
       zeroMem(result, size)
-    proc reallocShared(p: pointer, newsize: int): pointer =
+    proc reallocShared(p: pointer, newsize: Natural): pointer =
       result = crealloc(p, newsize)
       if result == nil: raiseOutOfMem()
     proc deallocShared(p: pointer) = cfree(p)
diff --git a/lib/system/sysio.nim b/lib/system/sysio.nim
index 3dfe51918..38a2132b2 100644
--- a/lib/system/sysio.nim
+++ b/lib/system/sysio.nim
@@ -16,7 +16,7 @@
                        # of the standard library!
 
 
-proc fputs(c: cstring, f: File) {.importc: "fputs", header: "<stdio.h>", 
+proc fputs(c: cstring, f: File) {.importc: "fputs", header: "<stdio.h>",
   tags: [WriteIOEffect].}
 proc fgets(c: cstring, n: int, f: File): cstring {.
   importc: "fgets", header: "<stdio.h>", tags: [ReadIOEffect].}
@@ -26,7 +26,7 @@ proc ungetc(c: cint, f: File) {.importc: "ungetc", header: "<stdio.h>",
   tags: [].}
 proc putc(c: char, stream: File) {.importc: "putc", header: "<stdio.h>",
   tags: [WriteIOEffect].}
-proc fprintf(f: File, frmt: cstring) {.importc: "fprintf", 
+proc fprintf(f: File, frmt: cstring) {.importc: "fprintf",
   header: "<stdio.h>", varargs, tags: [WriteIOEffect].}
 proc strlen(c: cstring): int {.
   importc: "strlen", header: "<string.h>", tags: [].}
@@ -124,18 +124,18 @@ proc readLine(f: File): TaintedString =
   result = TaintedString(newStringOfCap(80))
   if not readLine(f, result): raiseEIO("EOF reached")
 
-proc write(f: File, i: int) = 
+proc write(f: File, i: int) =
   when sizeof(int) == 8:
     fprintf(f, "%lld", i)
   else:
     fprintf(f, "%ld", i)
 
-proc write(f: File, i: BiggestInt) = 
+proc write(f: File, i: BiggestInt) =
   when sizeof(BiggestInt) == 8:
     fprintf(f, "%lld", i)
   else:
     fprintf(f, "%ld", i)
-    
+
 proc write(f: File, b: bool) =
   if b: write(f, "true")
   else: write(f, "false")
@@ -146,7 +146,7 @@ proc write(f: File, c: char) = putc(c, f)
 proc write(f: File, a: varargs[string, `$`]) =
   for x in items(a): write(f, x)
 
-proc readAllBuffer(file: File): string = 
+proc readAllBuffer(file: File): string =
   # This proc is for File we want to read but don't know how many
   # bytes we need to read before the buffer is empty.
   result = ""
@@ -159,8 +159,8 @@ proc readAllBuffer(file: File): string =
       buffer.setLen(bytesRead)
       result.add(buffer)
       break
-  
-proc rawFileSize(file: File): int = 
+
+proc rawFileSize(file: File): int =
   # this does not raise an error opposed to `getFileSize`
   var oldPos = ftell(file)
   discard fseek(file, 0, 2) # seek the end of the file
@@ -177,8 +177,8 @@ proc readAllFile(file: File, len: int): string =
 proc readAllFile(file: File): string =
   var len = rawFileSize(file)
   result = readAllFile(file, len)
-  
-proc readAll(file: File): TaintedString = 
+
+proc readAll(file: File): TaintedString =
   # Separate handling needed because we need to buffer when we
   # don't know the overall length of the File.
   let len = if file != stdin: rawFileSize(file) else: -1
@@ -186,11 +186,11 @@ proc readAll(file: File): TaintedString =
     result = readAllFile(file, len).TaintedString
   else:
     result = readAllBuffer(file).TaintedString
-  
+
 proc readFile(filename: string): TaintedString =
   var f = open(filename)
   try:
-    result = readAllFile(f).TaintedString
+    result = readAll(f).TaintedString
   finally:
     close(f)
 
@@ -265,7 +265,7 @@ proc open(f: var File, filename: string,
     elif bufSize == 0:
       discard setvbuf(f, nil, IONBF, 0)
 
-proc reopen(f: File, filename: string, mode: FileMode = fmRead): bool = 
+proc reopen(f: File, filename: string, mode: FileMode = fmRead): bool =
   var p: pointer = freopen(filename, FormatOpen[mode], f)
   result = p != nil
 
@@ -279,23 +279,23 @@ proc open(f: var File, filehandle: FileHandle, mode: FileMode): bool =
 proc fwrite(buf: pointer, size, n: int, f: File): int {.
   importc: "fwrite", noDecl.}
 
-proc readBuffer(f: File, buffer: pointer, len: int): int =
+proc readBuffer(f: File, buffer: pointer, len: Natural): int =
   result = fread(buffer, 1, len, f)
 
-proc readBytes(f: File, a: var openArray[int8|uint8], start, len: int): int =
+proc readBytes(f: File, a: var openArray[int8|uint8], start, len: Natural): int =
   result = readBuffer(f, addr(a[start]), len)
 
-proc readChars(f: File, a: var openArray[char], start, len: int): int =
+proc readChars(f: File, a: var openArray[char], start, len: Natural): int =
   result = readBuffer(f, addr(a[start]), len)
 
 {.push stackTrace:off, profiler:off.}
-proc writeBytes(f: File, a: openArray[int8|uint8], start, len: int): int =
+proc writeBytes(f: File, a: openArray[int8|uint8], start, len: Natural): int =
   var x = cast[ptr array[0..1000_000_000, int8]](a)
   result = writeBuffer(f, addr(x[start]), len)
-proc writeChars(f: File, a: openArray[char], start, len: int): int =
+proc writeChars(f: File, a: openArray[char], start, len: Natural): int =
   var x = cast[ptr array[0..1000_000_000, int8]](a)
   result = writeBuffer(f, addr(x[start]), len)
-proc writeBuffer(f: File, buffer: pointer, len: int): int =
+proc writeBuffer(f: File, buffer: pointer, len: Natural): int =
   result = fwrite(buffer, 1, len, f)
 
 proc write(f: File, s: string) =
diff --git a/lib/system/threads.nim b/lib/system/threads.nim
index 81d9e5d73..d8e011ecb 100644
--- a/lib/system/threads.nim
+++ b/lib/system/threads.nim
@@ -127,7 +127,7 @@ else:
     importc, header: "<pthread.h>".}
 
   proc pthread_create(a1: var TSysThread, a2: var TPthread_attr,
-            a3: proc (x: pointer) {.noconv.}, 
+            a3: proc (x: pointer): pointer {.noconv.}, 
             a4: pointer): cint {.importc: "pthread_create", 
             header: "<pthread.h>".}
   proc pthread_join(a1: TSysThread, a2: ptr pointer): cint {.
@@ -315,7 +315,7 @@ when defined(windows):
     threadProcWrapperBody(closure)
     # implicitly return 0
 else:
-  proc threadProcWrapper[TArg](closure: pointer) {.noconv.} = 
+  proc threadProcWrapper[TArg](closure: pointer): pointer {.noconv.} = 
     threadProcWrapperBody(closure)
 {.pop.}
 
diff --git a/lib/windows/windows.nim b/lib/windows/windows.nim
index 43c595a64..b76dea6c5 100644
--- a/lib/windows/windows.nim
+++ b/lib/windows/windows.nim
@@ -11,7 +11,7 @@
 ## Unicode version.

 

 {.deadCodeElim: on.}

-

+{.push gcsafe.}

 type

   WideChar* = uint16

   PWideChar* = ptr uint16

@@ -23481,7 +23481,7 @@ proc ListView_EnsureVisible(hwndLV: HWND, i, fPartialOK: int32): LRESULT =
                        MAKELPARAM(fPartialOK, 0))

 

 proc ListView_FindItem(wnd: HWND, iStart: int32, lvfi: var LV_FINDINFO): int32 =

-  result = SendMessage(wnd, LVM_FINDITEM, WPARAM(iStart), 

+  result = SendMessage(wnd, LVM_FINDITEM, WPARAM(iStart),

                        cast[LPARAM](addr(lvfi))).int32

 

 proc ListView_GetBkColor(wnd: HWND): LRESULT =

@@ -23615,9 +23615,9 @@ proc ListView_SetTextBkColor(wnd: HWND, clrTextBk: COLORREF): LRESULT =
 proc ListView_SetTextColor(wnd: HWND, clrText: COLORREF): LRESULT =

   result = SendMessage(wnd, LVM_SETTEXTCOLOR, 0, LPARAM(clrText))

 

-proc ListView_SortItems(hwndLV: HWND, pfnCompare: PFNLVCOMPARE, 

+proc ListView_SortItems(hwndLV: HWND, pfnCompare: PFNLVCOMPARE,

                         lPrm: LPARAM): LRESULT =

-  result = SendMessage(hwndLV, LVM_SORTITEMS, WPARAM(lPrm), 

+  result = SendMessage(hwndLV, LVM_SORTITEMS, WPARAM(lPrm),

                        cast[LPARAM](pfnCompare))

 

 proc ListView_Update(hwndLV: HWND, i: int32): LRESULT =

@@ -23924,3 +23924,5 @@ proc LOCALE_NEUTRAL(): DWORD =
 

 proc LOCALE_INVARIANT(): DWORD =

   result = MAKELCID(MAKELANGID(toU16(LANG_INVARIANT), SUBLANG_NEUTRAL), SORT_DEFAULT)

+

+{.pop.}

diff --git a/lib/wrappers/iup.nim b/lib/wrappers/iup.nim
index 27ab7d870..93e14cccd 100644
--- a/lib/wrappers/iup.nim
+++ b/lib/wrappers/iup.nim
@@ -1,13 +1,13 @@
 #
 #    Binding for the IUP GUI toolkit
-#       (c) 2012 Andreas Rumpf 
+#       (c) 2012 Andreas Rumpf
 #    C header files translated by hand
 #    Licence of IUP follows:
 
 
 # ****************************************************************************
 # Copyright (C) 1994-2009 Tecgraf, PUC-Rio.
-# 
+#
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
 # "Software"), to deal in the Software without restriction, including
@@ -30,12 +30,12 @@
 
 {.deadCodeElim: on.}
 
-when defined(windows): 
-  const dllname = "iup(30|27|26|25|24).dll"
+when defined(windows):
+  const dllname = "iup(|30|27|26|25|24).dll"
 elif defined(macosx):
-  const dllname = "libiup(3.0|2.7|2.6|2.5|2.4).dylib"
-else: 
-  const dllname = "libiup(3.0|2.7|2.6|2.5|2.4).so.1"
+  const dllname = "libiup(|3.0|2.7|2.6|2.5|2.4).dylib"
+else:
+  const dllname = "libiup(|3.0|2.7|2.6|2.5|2.4).so(|.1)"
 
 const
   IUP_NAME* = "IUP - Portable User Interface"
@@ -67,8 +67,8 @@ proc alarm*(title, msg, b1, b2, b3: cstring): cint {.
   importc: "IupAlarm", dynlib: dllname, cdecl.}
 proc scanf*(format: cstring): cint {.
   importc: "IupScanf", dynlib: dllname, cdecl, varargs.}
-proc listDialog*(theType: cint, title: cstring, size: cint, 
-                 list: cstringArray, op, maxCol, maxLin: cint, 
+proc listDialog*(theType: cint, title: cstring, size: cint,
+                 list: cstringArray, op, maxCol, maxLin: cint,
                  marks: ptr cint): cint {.
                  importc: "IupListDialog", dynlib: dllname, cdecl.}
 proc getText*(title, text: cstring): cint {.
@@ -77,14 +77,14 @@ proc getColor*(x, y: cint, r, g, b: var byte): cint {.
   importc: "IupGetColor", dynlib: dllname, cdecl.}
 
 type
-  Iparamcb* = proc (dialog: PIhandle, paramIndex: cint, 
+  Iparamcb* = proc (dialog: PIhandle, paramIndex: cint,
                     userData: pointer): cint {.cdecl.}
 
-proc getParam*(title: cstring, action: Iparamcb, userData: pointer, 
+proc getParam*(title: cstring, action: Iparamcb, userData: pointer,
                format: cstring): cint {.
                importc: "IupGetParam", cdecl, varargs, dynlib: dllname.}
-proc getParamv*(title: cstring, action: Iparamcb, userData: pointer, 
-                format: cstring, paramCount, paramExtra: cint, 
+proc getParamv*(title: cstring, action: Iparamcb, userData: pointer,
+                format: cstring, paramCount, paramExtra: cint,
                 paramData: pointer): cint {.
                 importc: "IupGetParamv", cdecl, dynlib: dllname.}
 
@@ -96,11 +96,11 @@ proc open*(argc: ptr cint, argv: ptr cstringArray): cint {.
 proc close*() {.importc: "IupClose", cdecl, dynlib: dllname.}
 proc imageLibOpen*() {.importc: "IupImageLibOpen", cdecl, dynlib: dllname.}
 
-proc mainLoop*(): cint {.importc: "IupMainLoop", cdecl, dynlib: dllname, 
+proc mainLoop*(): cint {.importc: "IupMainLoop", cdecl, dynlib: dllname,
                          discardable.}
 proc loopStep*(): cint {.importc: "IupLoopStep", cdecl, dynlib: dllname,
                          discardable.}
-proc mainLoopLevel*(): cint {.importc: "IupMainLoopLevel", cdecl, 
+proc mainLoopLevel*(): cint {.importc: "IupMainLoopLevel", cdecl,
                               dynlib: dllname, discardable.}
 proc flush*() {.importc: "IupFlush", cdecl, dynlib: dllname.}
 proc exitLoop*() {.importc: "IupExitLoop", cdecl, dynlib: dllname.}
@@ -204,7 +204,7 @@ proc getCallback*(ih: PIhandle, name: cstring): Icallback {.
   importc: "IupGetCallback", cdecl, dynlib: dllname.}
 proc setCallback*(ih: PIhandle, name: cstring, fn: Icallback): Icallback {.
   importc: "IupSetCallback", cdecl, dynlib: dllname, discardable.}
-  
+
 proc setCallbacks*(ih: PIhandle, name: cstring, fn: Icallback): PIhandle {.
   importc: "IupSetCallbacks", cdecl, dynlib: dllname, varargs, discardable.}
 
@@ -235,7 +235,7 @@ proc getClassName*(ih: PIhandle): cstring {.
   importc: "IupGetClassName", cdecl, dynlib: dllname.}
 proc getClassType*(ih: PIhandle): cstring {.
   importc: "IupGetClassType", cdecl, dynlib: dllname.}
-proc getClassAttributes*(classname: cstring, names: cstringArray, 
+proc getClassAttributes*(classname: cstring, names: cstringArray,
                          n: cint): cint {.
   importc: "IupGetClassAttributes", cdecl, dynlib: dllname.}
 proc saveClassAttributes*(ih: PIhandle) {.
@@ -378,12 +378,12 @@ const
   IUP_CONTINUE* = cint(-4)
 
   # IupPopup and IupShowXY Parameter Values
-  IUP_CENTER* = cint(0xFFFF) 
-  IUP_LEFT* = cint(0xFFFE) 
-  IUP_RIGHT* = cint(0xFFFD) 
-  IUP_MOUSEPOS* = cint(0xFFFC) 
-  IUP_CURRENT* = cint(0xFFFB) 
-  IUP_CENTERPARENT* = cint(0xFFFA) 
+  IUP_CENTER* = cint(0xFFFF)
+  IUP_LEFT* = cint(0xFFFE)
+  IUP_RIGHT* = cint(0xFFFD)
+  IUP_MOUSEPOS* = cint(0xFFFC)
+  IUP_CURRENT* = cint(0xFFFB)
+  IUP_CENTERPARENT* = cint(0xFFFA)
   IUP_TOP* = IUP_LEFT
   IUP_BOTTOM* = IUP_RIGHT
 
@@ -397,10 +397,10 @@ const
   # SCROLL_CB Callback Values
   IUP_SBUP* = cint(0)
   IUP_SBDN* = cint(1)
-  IUP_SBPGUP* = cint(2)   
+  IUP_SBPGUP* = cint(2)
   IUP_SBPGDN* = cint(3)
   IUP_SBPOSV* = cint(4)
-  IUP_SBDRAGV* = cint(5) 
+  IUP_SBDRAGV* = cint(5)
   IUP_SBLEFT* = cint(6)
   IUP_SBRIGHT* = cint(7)
   IUP_SBPGLEFT* = cint(8)
@@ -433,12 +433,12 @@ const
   IUP_MASK_EFLOAT* = "[+/-]?(/d+/.?/d*|/./d+)([eE][+/-]?/d+)?"
   IUP_MASK_INT* = "[+/-]?/d+"
   IUP_MASK_UINT* = "/d+"
-  
+
 # from 32 to 126, all character sets are equal,
 # the key code i the same as the character code.
 const
   K_SP* = cint(ord(' '))
-  K_exclam* = cint(ord('!'))   
+  K_exclam* = cint(ord('!'))
   K_quotedbl* = cint(ord('\"'))
   K_numbersign* = cint(ord('#'))
   K_dollar* = cint(ord('$'))
@@ -467,51 +467,51 @@ const
   K_semicolon* = cint(ord(';'))
   K_less* = cint(ord('<'))
   K_equal* = cint(ord('='))
-  K_greater* = cint(ord('>'))   
-  K_question* = cint(ord('?'))   
-  K_at* = cint(ord('@'))   
-  K_upperA* = cint(ord('A'))   
-  K_upperB* = cint(ord('B'))   
-  K_upperC* = cint(ord('C'))   
-  K_upperD* = cint(ord('D'))   
-  K_upperE* = cint(ord('E'))   
-  K_upperF* = cint(ord('F'))   
-  K_upperG* = cint(ord('G'))   
-  K_upperH* = cint(ord('H'))   
-  K_upperI* = cint(ord('I'))   
-  K_upperJ* = cint(ord('J'))   
-  K_upperK* = cint(ord('K'))   
-  K_upperL* = cint(ord('L'))   
-  K_upperM* = cint(ord('M'))   
-  K_upperN* = cint(ord('N'))   
-  K_upperO* = cint(ord('O'))   
-  K_upperP* = cint(ord('P'))   
-  K_upperQ* = cint(ord('Q'))  
-  K_upperR* = cint(ord('R'))  
-  K_upperS* = cint(ord('S'))  
-  K_upperT* = cint(ord('T'))  
-  K_upperU* = cint(ord('U'))  
-  K_upperV* = cint(ord('V')) 
-  K_upperW* = cint(ord('W')) 
-  K_upperX* = cint(ord('X'))  
-  K_upperY* = cint(ord('Y'))  
-  K_upperZ* = cint(ord('Z'))  
-  K_bracketleft* = cint(ord('[')) 
-  K_backslash* = cint(ord('\\'))  
-  K_bracketright* = cint(ord(']'))  
-  K_circum* = cint(ord('^'))   
-  K_underscore* = cint(ord('_'))   
-  K_grave* = cint(ord('`'))   
-  K_lowera* = cint(ord('a'))  
-  K_lowerb* = cint(ord('b'))   
-  K_lowerc* = cint(ord('c')) 
-  K_lowerd* = cint(ord('d'))   
-  K_lowere* = cint(ord('e'))   
-  K_lowerf* = cint(ord('f'))  
+  K_greater* = cint(ord('>'))
+  K_question* = cint(ord('?'))
+  K_at* = cint(ord('@'))
+  K_upperA* = cint(ord('A'))
+  K_upperB* = cint(ord('B'))
+  K_upperC* = cint(ord('C'))
+  K_upperD* = cint(ord('D'))
+  K_upperE* = cint(ord('E'))
+  K_upperF* = cint(ord('F'))
+  K_upperG* = cint(ord('G'))
+  K_upperH* = cint(ord('H'))
+  K_upperI* = cint(ord('I'))
+  K_upperJ* = cint(ord('J'))
+  K_upperK* = cint(ord('K'))
+  K_upperL* = cint(ord('L'))
+  K_upperM* = cint(ord('M'))
+  K_upperN* = cint(ord('N'))
+  K_upperO* = cint(ord('O'))
+  K_upperP* = cint(ord('P'))
+  K_upperQ* = cint(ord('Q'))
+  K_upperR* = cint(ord('R'))
+  K_upperS* = cint(ord('S'))
+  K_upperT* = cint(ord('T'))
+  K_upperU* = cint(ord('U'))
+  K_upperV* = cint(ord('V'))
+  K_upperW* = cint(ord('W'))
+  K_upperX* = cint(ord('X'))
+  K_upperY* = cint(ord('Y'))
+  K_upperZ* = cint(ord('Z'))
+  K_bracketleft* = cint(ord('['))
+  K_backslash* = cint(ord('\\'))
+  K_bracketright* = cint(ord(']'))
+  K_circum* = cint(ord('^'))
+  K_underscore* = cint(ord('_'))
+  K_grave* = cint(ord('`'))
+  K_lowera* = cint(ord('a'))
+  K_lowerb* = cint(ord('b'))
+  K_lowerc* = cint(ord('c'))
+  K_lowerd* = cint(ord('d'))
+  K_lowere* = cint(ord('e'))
+  K_lowerf* = cint(ord('f'))
   K_lowerg* = cint(ord('g'))
-  K_lowerh* = cint(ord('h')) 
-  K_loweri* = cint(ord('i')) 
-  K_lowerj* = cint(ord('j')) 
+  K_lowerh* = cint(ord('h'))
+  K_loweri* = cint(ord('i'))
+  K_lowerj* = cint(ord('j'))
   K_lowerk* = cint(ord('k'))
   K_lowerl* = cint(ord('l'))
   K_lowerm* = cint(ord('m'))
@@ -553,19 +553,19 @@ proc isAltXkey*(c: cint): bool = return c > 768 and c < 1024
 proc isSysXkey*(c: cint): bool = return c > 1024 and c < 1280
 
 proc iUPxCODE*(c: cint): cint = return c + cint(128) # Normal (must be above 128)
-proc iUPsxCODE*(c: cint): cint = 
+proc iUPsxCODE*(c: cint): cint =
   return c + cint(256)
-  # Shift (must have range to include the standard keys and the normal 
+  # Shift (must have range to include the standard keys and the normal
   # extended keys, so must be above 256
 
 proc iUPcxCODE*(c: cint): cint = return c + cint(512) # Ctrl
 proc iUPmxCODE*(c: cint): cint = return c + cint(768) # Alt
-proc iUPyxCODE*(c: cint): cint = return c + cint(1024) # Sys (Win or Apple) 
+proc iUPyxCODE*(c: cint): cint = return c + cint(1024) # Sys (Win or Apple)
 
 const
   IUP_NUMMAXCODES* = 1280 ## 5*256=1280  Normal+Shift+Ctrl+Alt+Sys
 
-  K_HOME* = iUPxCODE(1)                
+  K_HOME* = iUPxCODE(1)
   K_UP* = iUPxCODE(2)
   K_PGUP* = iUPxCODE(3)
   K_LEFT* = iUPxCODE(4)
@@ -574,8 +574,8 @@ const
   K_END* = iUPxCODE(7)
   K_DOWN* = iUPxCODE(8)
   K_PGDN* = iUPxCODE(9)
-  K_INS* = iUPxCODE(10)    
-  K_DEL* = iUPxCODE(11)    
+  K_INS* = iUPxCODE(10)
+  K_DEL* = iUPxCODE(11)
   K_PAUSE* = iUPxCODE(12)
   K_ESC* = iUPxCODE(13)
   K_ccedilla* = iUPxCODE(14)
@@ -728,13 +728,13 @@ const
   K_yPrint* = iUPyxCODE(K_Print)
   K_yMenu* = iUPyxCODE(K_Menu)
 
-  K_sPlus* = iUPsxCODE(K_plus)   
-  K_sComma* = iUPsxCODE(K_comma)   
-  K_sMinus* = iUPsxCODE(K_minus)   
-  K_sPeriod* = iUPsxCODE(K_period)   
-  K_sSlash* = iUPsxCODE(K_slash)   
+  K_sPlus* = iUPsxCODE(K_plus)
+  K_sComma* = iUPsxCODE(K_comma)
+  K_sMinus* = iUPsxCODE(K_minus)
+  K_sPeriod* = iUPsxCODE(K_period)
+  K_sSlash* = iUPsxCODE(K_slash)
   K_sAsterisk* = iUPsxCODE(K_asterisk)
-                        
+
   K_cupperA* = iUPcxCODE(K_upperA)
   K_cupperB* = iUPcxCODE(K_upperB)
   K_cupperC* = iUPcxCODE(K_upperC)
@@ -767,16 +767,16 @@ const
   K_c4* = iUPcxCODE(K_4)
   K_c5* = iUPcxCODE(K_5)
   K_c6* = iUPcxCODE(K_6)
-  K_c7* = iUPcxCODE(K_7)        
-  K_c8* = iUPcxCODE(K_8)         
+  K_c7* = iUPcxCODE(K_7)
+  K_c8* = iUPcxCODE(K_8)
   K_c9* = iUPcxCODE(K_9)
   K_c0* = iUPcxCODE(K_0)
-  K_cPlus* = iUPcxCODE(K_plus)   
-  K_cComma* = iUPcxCODE(K_comma)   
-  K_cMinus* = iUPcxCODE(K_minus)   
-  K_cPeriod* = iUPcxCODE(K_period)   
-  K_cSlash* = iUPcxCODE(K_slash)   
-  K_cSemicolon* = iUPcxCODE(K_semicolon) 
+  K_cPlus* = iUPcxCODE(K_plus)
+  K_cComma* = iUPcxCODE(K_comma)
+  K_cMinus* = iUPcxCODE(K_minus)
+  K_cPeriod* = iUPcxCODE(K_period)
+  K_cSlash* = iUPcxCODE(K_slash)
+  K_cSemicolon* = iUPcxCODE(K_semicolon)
   K_cEqual* = iUPcxCODE(K_equal)
   K_cBracketleft* = iUPcxCODE(K_bracketleft)
   K_cBracketright* = iUPcxCODE(K_bracketright)
@@ -815,16 +815,16 @@ const
   K_m4* = iUPmxCODE(K_4)
   K_m5* = iUPmxCODE(K_5)
   K_m6* = iUPmxCODE(K_6)
-  K_m7* = iUPmxCODE(K_7)        
-  K_m8* = iUPmxCODE(K_8)         
+  K_m7* = iUPmxCODE(K_7)
+  K_m8* = iUPmxCODE(K_8)
   K_m9* = iUPmxCODE(K_9)
   K_m0* = iUPmxCODE(K_0)
-  K_mPlus* = iUPmxCODE(K_plus)   
-  K_mComma* = iUPmxCODE(K_comma)   
-  K_mMinus* = iUPmxCODE(K_minus)   
-  K_mPeriod* = iUPmxCODE(K_period)   
-  K_mSlash* = iUPmxCODE(K_slash)   
-  K_mSemicolon* = iUPmxCODE(K_semicolon) 
+  K_mPlus* = iUPmxCODE(K_plus)
+  K_mComma* = iUPmxCODE(K_comma)
+  K_mMinus* = iUPmxCODE(K_minus)
+  K_mPeriod* = iUPmxCODE(K_period)
+  K_mSlash* = iUPmxCODE(K_slash)
+  K_mSemicolon* = iUPmxCODE(K_semicolon)
   K_mEqual* = iUPmxCODE(K_equal)
   K_mBracketleft* = iUPmxCODE(K_bracketleft)
   K_mBracketright* = iUPmxCODE(K_bracketright)
@@ -863,16 +863,16 @@ const
   K_y4* = iUPyxCODE(K_4)
   K_y5* = iUPyxCODE(K_5)
   K_y6* = iUPyxCODE(K_6)
-  K_y7* = iUPyxCODE(K_7)        
-  K_y8* = iUPyxCODE(K_8)         
+  K_y7* = iUPyxCODE(K_7)
+  K_y8* = iUPyxCODE(K_8)
   K_y9* = iUPyxCODE(K_9)
   K_y0* = iUPyxCODE(K_0)
   K_yPlus* = iUPyxCODE(K_plus)
   K_yComma* = iUPyxCODE(K_comma)
-  K_yMinus* = iUPyxCODE(K_minus)   
-  K_yPeriod* = iUPyxCODE(K_period)   
-  K_ySlash* = iUPyxCODE(K_slash)   
-  K_ySemicolon* = iUPyxCODE(K_semicolon) 
+  K_yMinus* = iUPyxCODE(K_minus)
+  K_yPeriod* = iUPyxCODE(K_period)
+  K_ySlash* = iUPyxCODE(K_slash)
+  K_ySemicolon* = iUPyxCODE(K_semicolon)
   K_yEqual* = iUPyxCODE(K_equal)
   K_yBracketleft* = iUPyxCODE(K_bracketleft)
   K_yBracketright* = iUPyxCODE(K_bracketright)
@@ -893,11 +893,11 @@ proc dial*(theType: cstring): PIhandle {.cdecl, importc: "IupDial", dynlib: dlln
 proc matrix*(action: cstring): PIhandle {.cdecl, importc: "IupMatrix", dynlib: dllname.}
 
 # IupMatrix utilities
-proc matSetAttribute*(ih: PIhandle, name: cstring, lin, col: cint, 
+proc matSetAttribute*(ih: PIhandle, name: cstring, lin, col: cint,
                       value: cstring) {.
                       cdecl, importc: "IupMatSetAttribute", dynlib: dllname.}
-proc matStoreAttribute*(ih: PIhandle, name: cstring, lin, col: cint, 
-                        value: cstring) {.cdecl, 
+proc matStoreAttribute*(ih: PIhandle, name: cstring, lin, col: cint,
+                        value: cstring) {.cdecl,
                         importc: "IupMatStoreAttribute", dynlib: dllname.}
 proc matGetAttribute*(ih: PIhandle, name: cstring, lin, col: cint): cstring {.
   cdecl, importc: "IupMatGetAttribute", dynlib: dllname.}
@@ -905,9 +905,9 @@ proc matGetInt*(ih: PIhandle, name: cstring, lin, col: cint): cint {.
   cdecl, importc: "IupMatGetInt", dynlib: dllname.}
 proc matGetFloat*(ih: PIhandle, name: cstring, lin, col: cint): cfloat {.
   cdecl, importc: "IupMatGetFloat", dynlib: dllname.}
-proc matSetfAttribute*(ih: PIhandle, name: cstring, lin, col: cint, 
-                       format: cstring) {.cdecl, 
-                       importc: "IupMatSetfAttribute", 
+proc matSetfAttribute*(ih: PIhandle, name: cstring, lin, col: cint,
+                       format: cstring) {.cdecl,
+                       importc: "IupMatSetfAttribute",
                        dynlib: dllname, varargs.}
 
 # Used by IupColorbar
@@ -931,10 +931,10 @@ proc pPlotAddStr*(ih: PIhandle, x: cstring, y: cfloat) {.
 proc pPlotEnd*(ih: PIhandle): cint {.
   cdecl, importc: "IupPPlotEnd", dynlib: dllname.}
 
-proc pPlotInsertStr*(ih: PIhandle, index, sampleIndex: cint, x: cstring, 
-                     y: cfloat) {.cdecl, importc: "IupPPlotInsertStr", 
+proc pPlotInsertStr*(ih: PIhandle, index, sampleIndex: cint, x: cstring,
+                     y: cfloat) {.cdecl, importc: "IupPPlotInsertStr",
                      dynlib: dllname.}
-proc pPlotInsert*(ih: PIhandle, index, sampleIndex: cint, 
+proc pPlotInsert*(ih: PIhandle, index, sampleIndex: cint,
                   x, y: cfloat) {.
                   cdecl, importc: "IupPPlotInsert", dynlib: dllname.}