GNU bug report logs - #28625
[PROPOSED] Speed up (format "%s" STRING) and the like

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Package: emacs;

Reported by: Paul Eggert <eggert <at> cs.ucla.edu>

Date: Wed, 27 Sep 2017 18:53:02 UTC

Severity: normal

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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Message #40 received at 28625 <at> debbugs.gnu.org (full text, mbox):

From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 28625 <at> debbugs.gnu.org, jwiegley <at> gmail.com, eggert <at> cs.ucla.edu
Subject: Re: bug#28625: [PROPOSED] Speed up (format "%s" STRING) and the like
Date: Sat, 07 Oct 2017 10:56:52 +0000

[Message part 1 (text/plain, inline)]
Eli Zaretskii <eliz <at> gnu.org> schrieb am Sa., 7. Okt. 2017 um 11:49 Uhr:

> > From: Philipp Stephani <p.stephani2 <at> gmail.com>
> > Date: Sat, 07 Oct 2017 09:12:16 +0000
> > Cc: 28625 <at> debbugs.gnu.org
> >
> > Shouldn't this at least be documented in the "Incompatible Lisp changes"
> section of NEWS?
>
> If it's incompatible, sure.  Is it?  Can you show the effect of the
> incompatibility?
>

$ emacs -Q -batch -eval '(let* ((a "a") (b (format "%s" a))) (aset a 0 ?b)
(print b))'

With Emacs 25.3 this prints "a", with current master it prints "b".

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This bug report was last modified 7 years and 283 days ago.

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