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* lib/jcode.rb (tr!, delete!, szueeze!): add empty string checking.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3602 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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eban 2003-03-23 13:24:45 +00:00
parent 31e2a889a0
commit 051eca3268
2 changed files with 6 additions and 1 deletions
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lib/jcode.rb
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@ -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] == ?^