GNU bug report logs - #58839
29.0.50; project-kill-buffer fails when Eglot is running

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: philipk <at> posteo.net, 58839 <at> debbugs.gnu.org, manuel.uberti <at> inventati.org, joaotavora <at> gmail.com
Subject: bug#58839: [Patch] Re: bug#58839: 29.0.50; project-kill-buffer fails when Eglot is running
Date: Sun, 30 Oct 2022 21:13:51 +0200

On 30.10.2022 18:39, Eli Zaretskii wrote:
>> Date: Sun, 30 Oct 2022 17:58:18 +0200
>> Cc: philipk <at> posteo.net, 58839 <at> debbugs.gnu.org, manuel.uberti <at> inventati.org
>> From: Dmitry Gutov <dgutov <at> yandex.ru>
>>
>> On 30.10.2022 08:28, Eli Zaretskii wrote:
>>>> Those are relatively safe.  Then have a buffer-local variable for
>>>> packages to opt into -- not opt out of -- your scheme.
>>> I believe I made a similar argument with Dmitry back when project.el
>>> was added to Emacs.  Dmitry didn't like my suggestion back then, and I
>>> have doubts that he changed his mind.
>>
>> Do you have a link to that message? Details matter.
> 
> Not anymore, sorry.  It doesn't really matter, if you are now okay
> with making buffers that don't visit files by default not belong to a
> project, regardless of their default-directory.

It would help remind you of the original explanation, instead of putting 
me on the defensive. And recall the supporting voices from the others in 
the same discussion. And maybe add the explanation to the docs, if it 
looks that non-obvious.

To reiterate: we usually want to consider VC-Dir, Diff, Dired and 
Compilation buffers as part of the project. Even though they are not 
associated with a file. Because 'C-x p b' can be handy to switch to 
particular one, and 'C-x p k' can clean them up (when you're "closing" 
the project).

People who think differently, can use project-ignore-buffer-conditions 
and/or use some special backend (probably defined by themselves) that 
overrides 'project-buffers' with a different logic.

The issue Joao is having, however, is with particular "hidden" 
non-file-visiting buffers (in fundamental-mode). And here the argument 
could be made both ways.

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