GNU bug report logs - #23040
"Stack overflow in regexp matcher" when entering group

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Message #15 received at 23040 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Nikolaus Rath <Nikolaus <at> rath.org>
Cc: 23040 <at> debbugs.gnu.org
Subject: Re: bug#23040: Resolved
Date: Thu, 26 Jan 2017 23:55:25 +0100

Nikolaus Rath <Nikolaus <at> rath.org> writes:

> The problem here is that recently some spam has started to come with
> extremely long "References" headers, and that the regular expression
> used in one of my scoring rules is sub-optimal when applied to such long
> strings.
>
> In particular, the leading dot in "<.+@[a-z0-9]+\\.rath\\.org>" first
> matches the entire reference header, and then emacs presumably has to
> backtrack character by character (or something like that).
>
> Fixing the rule by restricting the match to one message id fixes the
> problem: "<[^<>@]+@[a-z0-9]+\\.rath\\.org>"

Could you submit a patch for this problem? 

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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