From: 7stud -- <bbxx789_05ss@...>
Date: 2011-03-02T05:17:20+09:00
Subject: Re: Pattern matching French accented characters

If you are not familiar with unicode, and you want to match utf-8 
characters, then you better start reading some unicode tutorials.  If 
you are already familiar with unicode in general, then in ruby you can 
set the $KCODE variable to 'U' for UTF-8, and then you can require the 
jcode standard library, which will change the way regexes work--they 
will match characters rather than single bytes.

See here:

http://blog.grayproductions.net/articles/the_kcode_variable_and_jcode_library

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