GNU bug report logs - #72532
[PATCH] ; lisp/progmodes/which-func.el (which-function-mode): check buffer

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From: Raffael Stocker <r.stocker <at> mnet-mail.de>
To: 72532 <at> debbugs.gnu.org
Subject: bug#72532: [PATCH] ; lisp/progmodes/which-func.el (which-function-mode): check buffer
Date: Thu, 08 Aug 2024 21:48:45 +0200

[Message part 1 (text/plain, inline)]

Tags: patch

Hi Emacs,

I have been getting "Selecting deleted buffer" errors recently when
opening files.  This is due to ‘which-function-mode’ (in my
prog-mode-hook) walking through (buffer-list) without checking for live
buffers.

I have not been able to reproduce with ‘emacs -Q’, but it seems to be
connected to eglot, as I see the problem only with eglot enabled.

Nevertheless, I would like to suggest the attached patch, if only to
make which-function-mode more robust.

Regards,
Raffael


In GNU Emacs 30.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version
 3.24.43, cairo version 1.18.0) of 2024-08-06 built on Whiteflame
Repository revision: fb642d9cf546f52a11cdfef479447ce2e8fa3ec8
Repository branch: emacs-30
Windowing system distributor 'The X.Org Foundation', version 11.0.12101013
System Description: Arch Linux

Configured using:
 'configure --prefix=/opt/emacs --with-native-compilation=aot'

[0001-lisp-progmodes-which-func.el-which-function-mode-che.patch (text/patch, attachment)]

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