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


From: Gerd Möllmann
Subject: bug#56682: Fix the long lines font locking related slowdowns
Date: Sat, 23 Jul 2022 09:30:21 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (darwin)

Eli Zaretskii <eliz@gnu.org> writes:

> And what jit-lock does when the text is already fontified should be
> negligible, right?

The iterator doesn't even stop and call jit-lock on regions with
'fontified' property, i.e. after font-lock.  I can't imagine ATM why
somone would have changed that.





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