From: Jimmy Kofler <koflerjim@...>
Date: 2007-12-07T19:06:00+09:00
Subject: Re: Unicode in Regex

> Re: Unicode in Regex
> Posted by Jordan Callicoat (monkeesage) on 03.12.2007 02:50  
>
> This seems to work...
>
> $KCODE = "UTF8"
> p /^[a-zA-Z\xC0-\xD6\xD9-\xF6\xF9-\xFF\.\'\-\ ]*?/u =~ "J�sp...it works"
> # => 0
> ...
> However, it looks to me like it would be more robust to use a slightly
> modified version of UTF8REGEX (found in the link Jimmy posted
> above)...
>
> UTF8REGEX = /\A(?:
>                  [a-zA-Z\.\-\'\ ]
>                | [\xC2-\xDF][\x80-\xBF]
>                |  \xE0[\xA0-\xBF][\x80-\xBF]
>                | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}
>                |  \xED[\x80-\x9F][\x80-\xBF]
>                |  \xF0[\x90-\xBF][\x80-\xBF]{2}
>                | [\xF1-\xF3][\x80-\xBF]{3}
>                |  \xF4[\x80-\x8F][\x80-\xBF]{2}
>                )*\z/mnx


Just to avoid confusion over the meaning of 'UTF8'  in UTF8REGEX: the n 
option sets the encoding of UTF8REGEX to none!

Cheers,

j. k.
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