GNU bug report logs - #55205
28.1.50; completion--replace illegally mutates completion candidates

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Package: emacs;

Reported by: Daniel Mendler <mail <at> daniel-mendler.de>

Date: Sun, 1 May 2022 08:29:02 UTC

Severity: normal

Found in version 28.1.50

Done: Daniel Mendler <mail <at> daniel-mendler.de>

Bug is archived. No further changes may be made.

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Message #68 received at 55205 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Eli Zaretskii <eliz <at> gnu.org>, Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: mail <at> daniel-mendler.de, monnier <at> iro.umontreal.ca, 55205 <at> debbugs.gnu.org
Subject: Re: bug#55205: 28.1.50; completion--replace illegally mutates
 completion candidates
Date: Sun, 1 May 2022 23:11:36 +0300

On 01.05.2022 15:17, Eli Zaretskii wrote:
> I don't understand how can completion work in general without
> destructively modifying strings.  Isn't that obvious?

It shouldn't modify the strings "owner" by outside code. String that can 
be referenced by other constants/functions/etc.

The easiest way to avoid that is to copy the whole collection and then 
modify the copied strings. But different approaches exist.
This bug report was last modified 231 days ago.

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