From: Yukihiro Matsumoto <matz@...>
Date: 2005-12-21T21:48:29+09:00
Subject: Re: Multibyte regexps...

Hi,

In message "Re: Multibyte regexps..."
    on Wed, 21 Dec 2005 18:59:59 +0900, Horacio Sanson <hsanson@moegi.waseda.jp> writes:

|I am having some issues with regular expressions when working with japanese 
|strings.
|
|Using ruby-1.8.3 on Windows XP home (Japanese version) I have this test:
|
|irb(main):271:0> s = "鞄"
|=> "\212\223"
|irb(main):272:0> l = "行"
|=> "\215s"
|irb(main):273:0> l =~ /s/
|=> 1
|irb(main):274:0> puts "#{$`}<<#{$&}>>#{$'}"
|E<s>>
|=> nil
|irb(main):275:0> "#{$`}<<#{$&}>>#{$'}"
|=> "\215<<s>>"
|irb(main):276:0> s =~ /l/
|=> nil

The encoding seems to be Shift_JIS. You have to specify encoding
before you make regular expression matching.  Put s after every
regular expression.

$KCODE="sjis"  # to make p work right
p s = "鞄"
p l = "行"
p l =~ /s/s
puts "#{$`}<<#{$&}>>#{$'}"
p "#{$`}<<#{$&}>>#{$'}"
p s =~ /l/s

							matz.