diff --git a/compiler/semexprs.nim b/compiler/semexprs.nim
index bce766626..da64df9dc 100644
--- a/compiler/semexprs.nim
+++ b/compiler/semexprs.nim
@@ -756,6 +756,9 @@ proc semOverloadedCallAnalyseEffects(c: PContext, n: PNode, nOrig: PNode,
     else:
       if callee.kind in skIterators and callee.id == c.p.owner.id:
         localError(n.info, errRecursiveDependencyX, callee.name.s)
+        # error correction, prevents endless for loop elimination in transf.
+        # See bug #2051:
+        result.sons[0] = newSymNode(errorSym(c, n))
       if sfNoSideEffect notin callee.flags: 
         if {sfImportc, sfSideEffect} * callee.flags != {}:
           incl(c.p.owner.flags, sfSideEffect)
diff --git a/compiler/transf.nim b/compiler/transf.nim
index cf13630fd..2f520aa20 100644
--- a/compiler/transf.nim
+++ b/compiler/transf.nim
@@ -492,7 +492,8 @@ proc transformFor(c: PTransf, n: PNode): PTransNode =
   var newC = newTransCon(getCurrOwner(c))
   newC.forStmt = n
   newC.forLoopBody = loopBody
-  internalAssert iter.kind == skIterator
+  # this can fail for 'nimsuggest' and 'check':
+  if iter.kind != skIterator: return result
   # generate access statements for the parameters (unless they are constant)
   pushTransCon(c, newC)
   for i in countup(1, sonsLen(call) - 1): 
diff --git a/doc/tut2.txt b/doc/tut2.txt
index e92c7d2ad..4d30b1445 100644
--- a/doc/tut2.txt
+++ b/doc/tut2.txt
@@ -735,14 +735,6 @@ regular expressions:
     return tkUnknown
 
 
-Term rewriting macros
----------------------
-
-Term rewriting macros can be used to enhance the compilation process
-with user defined optimizations; see this `document <trmacros.html>`_ for
-further information.
-
-
 Building your first macro
 -------------------------
 
diff --git a/lib/system.nim b/lib/system.nim
index a71699cae..f89f407f0 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -1455,7 +1455,8 @@ template `>%` *(x, y: expr): expr {.immediate.} = y <% x
 
 proc `$`*(x: int): string {.magic: "IntToStr", noSideEffect.}
   ## The stringify operator for an integer argument. Returns `x`
-  ## converted to a decimal string.
+  ## converted to a decimal string. ``$`` is Nim's general way of
+  ## spelling `toString`:idx:.
 
 proc `$`*(x: int64): string {.magic: "Int64ToStr", noSideEffect.}
   ## The stringify operator for an integer argument. Returns `x`
diff --git a/lib/system/repr.nim b/lib/system/repr.nim
index 5a243cb44..f1029ff6a 100644
--- a/lib/system/repr.nim
+++ b/lib/system/repr.nim
@@ -30,14 +30,16 @@ proc reprStrAux(result: var string, s: string) =
     add result, "nil"
     return
   add result, reprPointer(cast[pointer](s)) & "\""
-  for c in items(s):
+  for i in 0.. <s.len:
+    let c = s[i]
     case c
     of '"': add result, "\\\""
     of '\\': add result, "\\\\" # BUGFIX: forgotten
     of '\10': add result, "\\10\"\n\"" # " \n " # better readability
     of '\128' .. '\255', '\0'..'\9', '\11'..'\31':
       add result, "\\" & reprInt(ord(c))
-    else: result.add(c)
+    else:
+      result.add(c)
   add result, "\""
 
 proc reprStr(s: string): string {.compilerRtl.} =
diff --git a/web/assets/images/bg.jpg b/web/assets/images/bg.jpg
deleted file mode 100644
index 4e33a79ce..000000000
Binary files a/web/assets/images/bg.jpg and /dev/null differ
diff --git a/web/assets/images/bg.png b/web/assets/images/bg.png
new file mode 100644
index 000000000..91f335913
Binary files /dev/null and b/web/assets/images/bg.png differ
diff --git a/web/assets/style.css b/web/assets/style.css
index 04e7a1769..b74cbc486 100644
--- a/web/assets/style.css
+++ b/web/assets/style.css
@@ -8,7 +8,7 @@ body {
 	min-width:1030px;
 	margin:0;
 	font:13pt "arial";
-	background:#152534 url("images/bg.jpg") no-repeat center top; 
+	background:#152534 url("images/bg.png") no-repeat center top; 
 	color:rgba(0,0,0,.8); }
 
 pre {
@@ -555,4 +555,4 @@ pre .end { background:url("images/tabEnd.png") no-repeat left bottom; }
 #body table.docutils {
     border-collapse: collapse;
     text-align: left;
-    border-spacing: 0px; }
\ No newline at end of file
+    border-spacing: 0px; }