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bug#57804: An infinite loop in a `fontify-region' function causes Emacs


From: Lars Ingebrigtsen
Subject: bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely
Date: Thu, 15 Sep 2022 22:22:26 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux)

Gregory Heytings <gregory@heytings.org> writes:

>> I see that manually evaluating `(setq-local long-line-threshold
>> nil)' in a buffer where the optimization is already in effect
>> (i.e. where `(long-line-optimizations-p)' evaluates to t) doesn't
>> disable the optimization. Do you have a solution for that?
>
> No, and that will not be supported.

Well, that's when you need it -- you've discovered that the current
buffer is all wonky because of this, so you want to switch it off in
that particular buffer.





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