GNU bug report logs - #39190
28.0.50; two buffers with same buffer-file-name (diff-syntax-fontify-props)

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Message #113 received at 39190 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 39190 <at> debbugs.gnu.org, Felician Nemeth <felician.nemeth <at> gmail.com>
Subject: Re: bug#39190: 28.0.50; two buffers with same buffer-file-name
 (diff-syntax-fontify-props)
Date: Wed, 05 Feb 2020 01:20:44 +0200

>> vc-find-revision-no-save should not use delay-mode-hooks when called as
>> a command.
>
> That's the problem with the current approach: we end up making decisions
> which can't be justified.  Whether mode hooks should be run or not
> depends on the hook and various other things.  What we *do* know, OTOH
> is that `vc-find-revision-no-save`s buffer is not associated with
> a file, so setting `buffer-file-name` can result in bugs.

delay-mode-hooks was intended as the safest workaround to install in emacs-27.

Using alternatives of buffer-file-name are not straightforward
and need more testing in emacs-28.

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