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From: "Ludovic Courtès" <ludo@gnu.org>
To: Jean Abou Samra <jean@abou-samra.fr>
Cc: 57507@debbugs.gnu.org
Subject: bug#57507: Regular expression matching depends on locale encoding
Date: Mon, 05 Sep 2022 09:48:36 +0200	[thread overview]
Message-ID: <87mtbe5kiz.fsf@gnu.org> (raw)
In-Reply-To: <dba30c62-7ac8-21ea-0a79-6a22bb108284@abou-samra.fr> (Jean Abou Samra's message of "Wed, 31 Aug 2022 18:54:50 +0200")

Hi Jean,

Jean Abou Samra <jean@abou-samra.fr> skribis:

> Regular expressions do funky things with Unicode if a non-Unicode-aware
> locale is set. Yet, they're purely string operations, so I don't think
> it's expected that they depend on the locale encoding.

This is the expected behavior: first because (ice-9 regex) is
implemented in terms of the libc regex functions, as Dale put (but that
could be thought as an implementation detail), and second because things
such as character classes are necessarily locale-dependent (this has
bitten us in the past, for instance with <https://bugs.gnu.org/35785>).

I hope that makes sense.

Thanks,
Ludo’.





  parent reply	other threads:[~2022-09-05  7:48 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-31 16:54 bug#57507: Regular expression matching depends on locale encoding Jean Abou Samra
2022-09-01 19:34 ` dsmich
2022-09-05  7:48 ` Ludovic Courtès [this message]
2022-09-05 18:39   ` Jean Abou Samra
2022-09-05 19:24     ` Ludovic Courtès
2022-11-17 20:33       ` Jean Abou Samra

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