[PATCH] Fix MatchData#string returns a frozen copy of the match string

From 308c6a2d41ab0a4dfa4fb9dc7ff07fa9df01e8a0 Mon Sep 17 00:00:00 2001
From: Jose Narvaez <goyox86@gmail.com>
Date: Sat, 24 Jul 2010 17:16:27 -0430
Subject: [PATCH] Fix MatchData#string returns a frozen copy of the match string

---
 kernel/common/regexp.rb |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/common/regexp.rb b/kernel/common/regexp.rb
index c734d7c..1b0737f 100644
--- a/kernel/common/regexp.rb
+++ b/kernel/common/regexp.rb
@@ -568,7 +568,7 @@ end
 class MatchData
 
   def string
-    @source
+    @source.dup.freeze
   end
 
   def source
-- 
1.7.0.3