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


From: Stefan Monnier
Subject: bug#56682: Fix the long lines font locking related slowdowns
Date: Tue, 02 Aug 2022 03:55:56 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux)

> only top and bottom of the buffer are fontified), with the caveat that
> font-lock always tries to backtrack to BOL when fontifying the current
> hunk. Which makes sense, of course, but could be tweaked for long lines to
> avoid re-fontifying the whole buffer again and again.

It has already been (recently) tweaked for this on `master`.


        Stefan






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