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-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
31 files changed, 2007 insertions, 1810 deletions
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