GNU bug report logs - #55744
infinite loop

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Message #47 received at 55744 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: rms <at> gnu.org
Cc: larsi <at> gnus.org, danielrichardgrayson <at> gmail.com, 55744 <at> debbugs.gnu.org
Subject: Re: bug#55744: infinite loop
Date: Tue, 07 Jun 2022 05:28:08 +0300

> Cc: danielrichardgrayson <at> gmail.com, 55744 <at> debbugs.gnu.org
> From: Richard Stallman <rms <at> gnu.org>
> Date: Mon, 06 Jun 2022 18:15:06 -0400
> 
>   > That's a regexp with a lot of backtracking, I think (i.e., elements that
>   > can be matched both by the ?'s as well as the two *'s).  So matching
>   > this will be slow, which results in the hangs you're seeing when Emacs
>   > is trying to match that to the text in the buffer.
> 
> Would it make sense to say more about this point in the Emacs Lisp Manual
> where it describes regexps?

I think we already do, see the node "Regexp Problems" there.

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