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

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Message #20 received at 57804 <at> debbugs.gnu.org (full text, mbox):

From: dick <dick.r.chiang <at> gmail.com>
To: Paul Pogonyshev <pogonyshev <at> gmail.com>
Cc: 57804 <at> debbugs.gnu.org
Subject: Re: bug#57804: An infinite loop in a `fontify-region' function
 causes Emacs to hang indefinitely
Date: Wed, 14 Sep 2022 12:14:33 -0400

Oh what a horse's ass am I.

I see what you're saying.  A simple evaluation of (while t) is C-g'able.

jit-lock callbacks enjoy special status in that they're invoked
out-of-band in redisplay C code.  That's probably why they're not
interruptible from the interpreter loop.  But as you can tell from my
earlier outburst, I'm constantly talking out of school.

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