GNU bug report logs - #57804
An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 57804 <at> debbugs.gnu.org, Paul Pogonyshev <pogonyshev <at> gmail.com>
Subject: bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely
Date: Wed, 14 Sep 2022 19:38:12 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> This case is exactly one of those which I think we shouldn't try to
> fix, because it's the case of "buggy Lisp program", a.k.a. "don't do
> that".  There's no reason for any useful Lisp program to have an
> infloop like this:
>
>>   (while t
>>     "whoopsie")

You've never accidentally put an infloop into a font locking function?
Then you've been very lucky.

We should definitely fix this is we can.

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