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

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Message #155 received at 55205 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: mail <at> daniel-mendler.de, larsi <at> gnus.org, monnier <at> iro.umontreal.ca,
 55205 <at> debbugs.gnu.org
Subject: Re: bug#55205: 28.1.50; completion--replace illegally mutates
 completion candidates
Date: Tue, 3 May 2022 00:06:47 +0300

On 02.05.2022 17:27, Eli Zaretskii wrote:
>> Date: Mon, 2 May 2022 12:46:00 +0300
>> Cc:mail <at> daniel-mendler.de,larsi <at> gnus.org,monnier <at> iro.umontreal.ca,
>>   55205 <at> debbugs.gnu.org
>> From: Dmitry Gutov<dgutov <at> yandex.ru>
>>
>> On 02.05.2022 05:23, Eli Zaretskii wrote:
>>> Collection can include functions, and how do you copy that?
>> Collection can be a function, not "include functions". You fetch the
>> list of strings using that function (for the given input) and then make
>> a deep copy of that.
> So I need to call that function twice, is that it?  It is normally
> called by the completion machinery out of my control.

You only use the function at the "fetch the list" step.

How many times it is called in total, is a harder question (due to 
implementation details, sometimes suboptimal), but that number shouldn't 
have to change.

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