GNU bug report logs - #57207
29.0.50; Fontification is slow after e7b5912b23 (Improvements to long lines handling)

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Package: emacs;

Reported by: Ihor Radchenko <yantar92 <at> gmail.com>

Date: Sun, 14 Aug 2022 15:55:01 UTC

Severity: normal

Found in version 29.0.50

Done: Gregory Heytings <gregory <at> heytings.org>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 57207 <at> debbugs.gnu.org, yantar92 <at> gmail.com
Subject: bug#57207: 29.0.50; Fontification is slow after e7b5912b23 (Improvements to long lines handling)
Date: Thu, 18 Aug 2022 17:32:04 +0300

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Cc: yantar92 <at> gmail.com,  57207 <at> debbugs.gnu.org
> Date: Thu, 18 Aug 2022 16:14:54 +0200
> 
> Simplified recipe:
> 
> (progn
>   (pop-to-buffer "foo.txt")
>   (flyspell-mode)
>   (insert (propertize (make-string 20000 ?x) 'display "foo")
> 	  "\n\n"))

Still no "Narrow" on the mode line.

But it's clear that one needs pre-command-hook or post-command-hook to
reproduce.

So the question becomes: why doesn't the narrowing get unwound?
Perhaps because we should do it in safe_run_hooks_maybe_narrowed,
instead of inside narrow_to_region_internal?
This bug report was last modified 2 years and 169 days ago.

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