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

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From: Gregory Heytings <gregory <at> heytings.org>
To: Dmitry Gutov <dgutov <at> yandex.ru>
Cc: 56682 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: bug#56682: Fix the long lines font locking related slowdowns
Date: Sat, 13 Aug 2022 17:16:14 +0000

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>> As I just said to Dmitry: the same multi-second delays we saw in 
>> smaller JSON files.  And those who have a slower CPU will see these 
>> multi-second delays with smaller files.
>
> No exactly the same ones, though, since the previous tests we did were 
> done with the older version of JSON support (not the current 
> js-json-mode), with somewhat different performance characteristics.
>

Okay, not "the same ones", but delays of the same order of magnitude 
nonetheless.  We had that discussion a month ago, and concluded that local 
fixes in every major (and minor) modes were not the way to go.  Having 
that discussion again does not seem fruitful.  You improved js-mode and 
created json-mode, that's fine, but it doesn't change anything to the way 
all other major (and minor) modes behave.

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