From: Rob Biedenharn <Rob@...>
Date: 2008-03-04T07:45:06+09:00
Subject: Re: Bug in regex engine ?? Must be...


On Mar 3, 2008, at 2:24 PM, D. Krmpotic wrote:

> Hi,
>
> I'm using Ruby 1.8.6, and I just discovered something rather
> interesting, here is a test:
>

$KCODE = 'UTF8'
require 'jcode'

> require 'test/unit'
>
> class TestRegexBug < Test::Unit::TestCase
>
>  def test_bug
>
>    hours = "pon-čet"
>
>    assert(hours =~ /[č]et/i)
>    assert(hours =~ /čet/i)
>    assert(hours =~ /-čet/i)
>    assert(hours =~ /[cč]et/i)
>    assert(hours =~ /-[č]et/i)
>
>  end
>
> end
>
> As you can see, this only happens with unicode letters... (the last  
> test
> fails).. I'm used to the fact that //i doesn't work for unicode chars
> and I already know that you need two dots to match one of these.. But
> this problem is different and weirder, because what triggers it is a
> minus sign before the square brackets.. if you remove either the '-'  
> or
> '[]' from the regex, it works..
>
> Can you comment?
>
> thank you,
> david


Ruby is not natively aware of unicode, but you can get all these to  
pass if you give it the $KCOCDE hint.

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com