bug#56682: Fix the long lines font locking related slowdowns

[Eli Zaretskii]

> Date: Thu, 28 Jul 2022 21:31:30 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: Lars Ingebrigtsen <larsi@gnus.org>, gerd.moellmann@gmail.com, 
>     56682@debbugs.gnu.org, monnier@iro.umontreal.ca
> 
> Okay, I pushed two final (?) improvements: a new optional argument "lock" 
> to narrow-to-region that Lars (added in Cc) suggested and which is now 
> used to lock the restriction around fontification-functions, and two 
> updates to the documentation.

Thanks, I made a few minor documentation changes there.

> Could you please tell me if it's ready to merge?

Yes, I think it's ready, thanks for all your hard work on this.

> >> And we can/should open a new bug report and branch to discuss these 
> >> long-and-truncated lines issues and solution attempts.
> >
> > Opening a new bug about that is fine by me.
> >
> 
> Actually there's no need to open a new bug report, as bug#56683 already 
> exists.

Right.