From 051eca3268b769aec21ad3c8405f299016d9b330 Mon Sep 17 00:00:00 2001
From: eban <eban@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 23 Mar 2003 13:24:45 +0000
Subject: * lib/jcode.rb (tr!, delete!, szueeze!): add empty string checking.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3602 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/jcode.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lib/jcode.rb')

diff --git a/lib/jcode.rb b/lib/jcode.rb
index 1e8fd64518..e0a2a99fce 100644
--- a/lib/jcode.rb
+++ b/lib/jcode.rb
@@ -130,7 +130,8 @@ class String
   public
 
   def tr!(from, to)
-    return self.delete!(from) if to.length == 0
+    return nil if from == ""
+    return self.delete!(from) if to == ""
 
     pattern = TrPatternCache[from] ||= /[#{_regex_quote(from)}]/
     if from[0] == ?^
-- 
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