news.txt updates; fixes bootstrapping

lib/system.nim

@@ -3266,9 +3266,10 @@ template `..<`*(a, b: expr): expr =
   ## '..' and '<' is required.
   a .. <b
 
-proc xlen*(x: string): int {.magic: "XLenStr", noSideEffect.}
+proc xlen*(x: string): int {.magic: "XLenStr", noSideEffect.} = discard
-proc xlen*[T](x: seq[T]): int {.magic: "XLenSeq", noSideEffect.}
+proc xlen*[T](x: seq[T]): int {.magic: "XLenSeq", noSideEffect.} =
   ## returns the length of a sequence or a string without testing for 'nil'.
   ## This is an optimization that rarely makes sense.
+  discard
 
 {.pop.} #{.push warning[GcMem]: off.}

web/news.txt

@@ -127,6 +127,7 @@ News
     things from backwards: ``a[^1]`` is like Python's ``a[-1]``.
   - A first version of the specification and implementation of the overloading
     of the assignment operator has arrived!
+  - ``system.len`` for strings and sequences now returns 0 for nil.
 
 
   Library additions
@@ -137,6 +138,10 @@ News
     with a ``newMultipartData`` proc.
   - Added `%*` operator for JSON.
   - The compiler is now available as Nimble package for c2nim.
+  - Added ``..^`` and ``..<`` templates to system so that the rather annoying
+    space between ``.. <`` and ``.. ^`` is not necessary anymore.
+  - Added ``system.xlen`` for strings and sequences to get back the old ``len``
+    operation that doesn't check for ``nil`` for efficiency.
 
 
   Bugfixes