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

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From: Paul Pogonyshev <pogonyshev <at> gmail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 57804 <at> debbugs.gnu.org
Subject: bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely
Date: Wed, 14 Sep 2022 19:30:35 +0200

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>
> > A single `C-g' wouldn't be quite the right thing, because the user may
> > hit `C-g' by accident while font-lock happens to run (and it's not
> > hanging), which is why I though a special key sequence like `C-g C-g
> > C-g' might make sense.
>
> That one is too fragile I agree. If "special" means `C-g C-g C-g' then
> that is fine in my book. If something gets stuck and doesn't respond
> to one "abort this" command, I usually tend to try several times
> anyway, and suspect this is the same for a lot of people.
>
> > Doesn't seem to have any effect here...
>
> It seems to have some effect with `C-g' after some time.  But still
> doesn't abort it, only shows some warning, yet doesn't make Emacs
> responsive.
>
> Paul
>

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