From: ts <decoux@...>
Date: 2006-07-22T02:30:21+09:00
Subject: Re: Replacing ' with \' using gsub

>>>>> "J" == Jani Soila <janisoila@gmail.com> writes:

J> irb(main):001:0> s = "a'b'"
J> => "a'b'"
J> Unexpected result
J> irb(main):002:0> s.gsub(/'/, "\\'")
J> => "ab'b"

 "\\'" is the same than $', i.e. MatchData#post_match. For example

irb(main):001:0> s = "a'b'"
=> "a'b'"
irb(main):002:0> s.match(/'/).post_match
=> "b'"
irb(main):003:0> 

 ruby replace the first  <'> with <b'>
              the second <'> with <> (there is nothing after the last ')


Guy Decoux