* string.c (rb_str_upto): RDoc updated. a patch from Nobuhiro

  IMAI <nov at yo.rim.or.jp> in [ruby-dev:39440]. [ruby-dev:39439]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25249 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 13 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 4f45ac5b73..d42c81a6a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,11 @@ Wed Oct  7 00:27:01 2009  Tanaka Akira  <akr@fsij.org>
 	  bind_random_port.
 	  [ruby-core:25970]
 
+Tue Oct  6 23:32:38 2009  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* string.c (rb_str_upto): RDoc updated.  a patch from Nobuhiro
+	  IMAI <nov at yo.rim.or.jp> in [ruby-dev:39440]. [ruby-dev:39439]
+
 Tue Oct  6 21:30:58 2009  Tanaka Akira  <akr@fsij.org>
 
 	* io.c (io_reopen): avoid close if possible.
diff --git a/string.c b/string.c
index cfd830fc04..acb2a91ee8 100644
--- a/string.c
+++ b/string.c
@@ -2863,6 +2863,14 @@ rb_str_succ_bang(VALUE str)
  *
  *     a8 a9 b0 b1 b2 b3 b4 b5 b6
  *     a8 a9 b0 b1 b2 b3 b4 b5 b6
+ *
+ *  If <i>str</i> and <i>other_str</i> contains only ascii numeric characters,
+ *  both are recognized as decimal numbers. In addition, the width of
+ *  string (e.g. leading zeros) is handled appropriately.
+ *
+ *     "9".upto("11").to_a   => ["9", "10", "11"]
+ *     "25".upto("5").to_a   => []
+ *     "07".upto("11").to_a  => ["07", "08", "09", "10", "11"]
  */
 
 static VALUE