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

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Message #1792 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 56682 <at> debbugs.gnu.org, gregory <at> heytings.org, dgutov <at> yandex.ru
Subject: Re: locked narrowing
Date: Wed, 17 Aug 2022 16:59:25 +0300

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Cc: dgutov <at> yandex.ru,  56682 <at> debbugs.gnu.org,  gregory <at> heytings.org
> Date: Wed, 17 Aug 2022 09:50:59 -0400
> 
> >> FWIW, I agree.  I don't think this information is cleanly&reliably
> >> exposed to ELisp
> >
> > It isn't currently.  I was suggesting to do so.
> 
> Last time I looked at it, I couldn't quite understand how the cache
> works there, so I wasn't sure how to make sure it returns valid
> information even if called outside of redisplay.

Looking at what maybe_produce_line_number does doesn't help?

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