* ext/date/lib/date/format.rb: an adjustment of regex.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31334 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Mon Apr 25 02:12:26 2011  Tadayoshi Funaba  <tadf@dotrb.org>
+
+	* ext/date/lib/date/format.rb: an adjustment of regex.
+
 Mon Apr 25 01:58:50 2011  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* ext/date/lib/date/format.rb: omitted to call _parse.

ext/date/lib/date/format.rb

@@ -146,9 +146,9 @@ class Date
 
   def self._iso8601(str) # :nodoc:
     if /\A\s*(?:([-+]?\d{2,}|-)-(\d{2})-(\d{2})|
-	        ([-+]?\d{2,})?-(\d{3})|
-	        (\d{2}|\d{4})?-w(\d{2})-(\d)|
-	        -w-(\d))
+		([-+]?\d{2,})?-(\d{3})|
+		(\d{4}|\d{2})?-w(\d{2})-(\d)|
+		-w-(\d))
 	(?:t
 	(\d{2}):(\d{2})(?::(\d{2})(?:[,.](\d+))?)?
 	(z|[-+]\d{2}(?::?\d{2})?)?)?\s*\z/ix =~ str