* string.c: Fix document. Default value of the first

argument of `String#split` is not `$;` but `nil`.
  When `nil` is passed as first argument, `$;` is used.
  [ci skip] [Bug #11729] [ruby-dev:49378]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53260 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Wed Dec 23 11:58:52 2015  Yuichiro Kaneko  <yui-knk@ruby-lang.org>
+
+	* string.c: Fix document. Default value of the first
+	  argument of `String#split` is not `$;` but `nil`.
+	  When `nil` is passed as first argument, `$;` is used.
+	  [ci skip] [Bug #11729] [ruby-dev:49378]
+
 Wed Dec 23 07:15:17 2015  Eric Wong  <e@80x24.org>
 
 	* ext/socket/init.c (rsock_init_sock): reject reserved FDs

string.c

@@ -6701,7 +6701,7 @@ static const char isspacetable[256] = {
 
 /*
  *  call-seq:
- *     str.split(pattern=$;, [limit])   -> anArray
+ *     str.split(pattern=nil, [limit])   -> anArray
  *
  *  Divides <i>str</i> into substrings based on a delimiter, returning an array
  *  of these substrings.
@@ -6716,8 +6716,8 @@ static const char isspacetable[256] = {
  *  <i>str</i> is split into individual characters. If <i>pattern</i> contains
  *  groups, the respective matches will be returned in the array as well.
  *
- *  If <i>pattern</i> is omitted, the value of <code>$;</code> is used.  If
- *  <code>$;</code> is <code>nil</code> (which is the default), <i>str</i> is
+ *  If <i>pattern</i> is <code>nil</code>, the value of <code>$;</code> is used.
+ *  If <code>$;</code> is <code>nil</code> (which is the default), <i>str</i> is
  *  split on whitespace as if ` ' were specified.
  *
  *  If the <i>limit</i> parameter is omitted, trailing null fields are