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From: Jean Abou Samra <jean@abou-samra.fr>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 57507@debbugs.gnu.org
Subject: bug#57507: Regular expression matching depends on locale encoding
Date: Mon, 5 Sep 2022 20:39:26 +0200	[thread overview]
Message-ID: <a9cd5f37-caef-0554-ad5a-a5f1f7fd7919@abou-samra.fr> (raw)
In-Reply-To: <87mtbe5kiz.fsf@gnu.org>

Le 05/09/2022 à 09:48, Ludovic Courtès a écrit :
> 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.



OK, thanks, but in this case, it should be clearly stated as a limitation
in the (ice-9 regex) documentation IMHO. If you don't know what constraints
there are on the implementation, there is no reason to expect this. Would it
help if I submitted a patch for that?






  reply	other threads:[~2022-09-05 18:39 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
2022-09-05 18:39   ` Jean Abou Samra [this message]
2022-09-05 19:24     ` Ludovic Courtès
2022-11-17 20:33       ` Jean Abou Samra

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