GNU bug report logs - #56682
Fix the long lines font locking related slowdowns

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Message #1971 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Gregory Heytings <gregory <at> heytings.org>, Eli Zaretskii <eliz <at> gnu.org>
Cc: 56682 <at> debbugs.gnu.org, monnier <at> iro.umontreal.ca
Subject: Re: bug#56682: locked narrowing
Date: Wed, 30 Nov 2022 17:21:54 +0200

On 30/11/2022 12:11, Gregory Heytings wrote:
> Note that, apart from Dmitry, nobody reported a problem with that 
> detection mechanism, and Dmitry's recipe with which he spotted that 
> problem does not reflect actual usage.

FWIW, my recipe was a way to isolate a more pronounced issue that I have 
experienced in practice.

Even when editing with 'emacs -Q' I could notice an occasional stutter, 
but with https://github.com/kangjianbin/highlight-tail and/or 
https://github.com/Malabarba/smart-mode-line installed the problem got 
much more noticeable (apparently because both cause additional 
redisplays or whatever).

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