From: Run Paint Run Run <runrun@...>
Date: 2010-11-02T21:06:31+09:00
Subject: [ruby-core:33008] Re: [Ruby 1.9-Bug#4014][Open] Case-Sensitivity of Property Names Depends on Regexp Encoding

On Tue, Nov 2, 2010 at 5:07 AM, "Martin J. D��rst"
<duerst@it.aoyama.ac.jp> wrote:
> I'd personally have preferred that Unicode regexps would stay with past
> practice of keeping these things case-sensitive, and otherwise defined
> exactly down to the last character. Regexps are for programmers, not for end
> users, and programmers know that they have to distinguish upper- and
> lower-case. Alas, that may be too late now.

Unicode TR#18 <http://unicode.org/reports/tr18/#Categories>:

"The recommended names for UCD properties and property values are in
PropertyAliases.txt [Prop] and PropertyValueAliases.txt [PropValue].
There are both abbreviated names and longer, more descriptive names.
It is strongly recommended that both names be recognized, and that
loose matching of property names be used, whereby the case
distinctions, whitespace, hyphens, and underbar are ignored."