Doc fix for forward-word and backward-word.

* doc/lispref/positions.texi (Word Motion): Remove redundant sentence.
* lisp/simple.el (backward-word): Mention the optional argument.
* src/syntax.c (forward_word): Mention the optional argument.

2 files changed, 7 insertions, 3 deletions

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index 6df8c3912a3..42b9600a0ac 100644
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,3 +1,7 @@
+2013-08-13  Xue Fuqiao  <xfq.free@gmail.com>
+
+        * positions.texi (Word Motion): Remove redundant sentence.
+
 2013-08-13  Glenn Morris  <rgm@gnu.org>
 
         * lists.texi (List Elements):
diff --git a/doc/lispref/positions.texi b/doc/lispref/positions.texi
index 119ad98a53d..5cb1a851a5b 100644
--- a/doc/lispref/positions.texi
+++ b/doc/lispref/positions.texi
@@ -191,8 +191,8 @@ whether a given character is part of a word.  @xref{Syntax Tables}.
 
 @deffn Command forward-word &optional count
 This function moves point forward @var{count} words (or backward if
-@var{count} is negative).  If @var{count} is @code{nil}, it moves
-forward one word.
+@var{count} is negative).  If @var{count} is omitted or @code{nil}, it
+defaults to 1.
 
 ``Moving one word'' means moving until point crosses a
 word-constituent character and then encounters a word-separator
@@ -210,7 +210,7 @@ If @code{inhibit-field-text-motion} is non-@code{nil},
 this function ignores field boundaries.
 
 In an interactive call, @var{count} is specified by the numeric prefix
-argument.  If @var{count} is omitted or @code{nil}, it defaults to 1.
+argument.
 @end deffn
 
 @deffn Command backward-word &optional count