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From: Florian Weimer <fw@deneb.enyo.de>
To: Alexander Bantyev <balsoft@balsoft.ru>
Cc: libc-help@sourceware.org, mfabian@redhat.com, carlos@redhat.com
Subject: Re: [idea] Update ISO 14651 file in locales to the latest standard
 version
References: <CSQR0R.EMQXVP5812PZ@balsoft.ru>
Date: Sun, 10 Oct 2021 18:07:33 +0200
In-Reply-To: <CSQR0R.EMQXVP5812PZ@balsoft.ru> (Alexander Bantyev's message of
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* Alexander Bantyev:

> The file localedef/locales/iso14651_t1_common is, as far as I can tell,
> supposed to be taken from <https://standards.iso.org/iso-iec/14651>. 
> However,
> the version in glibc repository is quite old (from 2016, I think) and is
> missing some new Unicode codepoints. There have been new editions to the
> standard, the newest being edition 6 from 2020:
> <https://standards.iso.org/iso-iec/14651/ed-6/en/ISO14651_2020_TABLE1_en.txt>
>
> Perhaps the file in the glibc repository can be updated to match the
> latest standard?

I think it's scary to update this file because it alters the result of
bracket patterns in regular expressions.  The file is no longer fully
automatically generated, I think.  Implementing rational ranges where
it counts in glibc would be one way forward here.

Cc:ing Mike and Carlos, who have more details.