GNU bug report logs - #14207
24.2; insert-file-contents clobbers match data

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Package: emacs;

Reported by: Aidan Gauland <aidalgol <at> no8wireless.co.nz>

Date: Mon, 15 Apr 2013 01:02:01 UTC

Severity: minor

Tags: notabug

Found in version 24.2

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

Full log

Message #8 received at 14207 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Aidan Gauland <aidalgol <at> no8wireless.co.nz>
Cc: 14207 <at> debbugs.gnu.org
Subject: Re: bug#14207: 24.2; insert-file-contents clobbers match data
Date: Mon, 15 Apr 2013 08:16:35 +0300

> From: Aidan Gauland <aidalgol <at> no8wireless.co.nz>
> Date: Mon, 15 Apr 2013 12:56:26 +1200
> 
> If (and only if) the match data is non-nil when `insert-file-contents'
> is called, it clobbers the match-data.

And why is that a bug?

From the ELisp manual (node "Match Data"):

     Notice that all functions are allowed to overwrite the match data
  unless they're explicitly documented not to do so.

'insert-file-contents' is not documented to preserve match data.
This bug report was last modified 12 years and 93 days ago.

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