GNU bug report logs - #74091
31.0.50; string-pixel-width in mode line disables region

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Message #52 received at 74091 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: me <at> eshelyaron.com, 74091 <at> debbugs.gnu.org
Subject: Re: bug#74091: 31.0.50; string-pixel-width in mode line disables
 region
Date: Sat, 09 Nov 2024 20:14:43 +0200

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Cc: me <at> eshelyaron.com,  74091 <at> debbugs.gnu.org
> Date: Sat, 09 Nov 2024 13:06:13 -0500
> 
> AFAICT the problem is new with the addition of the `kill-permanent`
> arg to `kill-all-local-variables`.
> 
> Here's an example of a problem:
> 
>     src/emacs -Q --batch --eval '(message "%s" (list (setq-default foo nil) (setq-local foo t) (kill-all-local-variables t) (local-variable-p `foo) foo (default-value `foo) (with-temp-buffer foo) foo))'
> 
> =>
> 
>     (nil t nil t t nil nil nil)
> 
> If we call `kill-all-local-variables` without the additional argument, we
> get the correct answer:
> 
>     (nil t nil nil nil nil nil nil)

This feature was introduced in Emacs 29, so we should preferably fix
it in Emacs 30.  Any suggestions?

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