GNU bug report logs - #31715
cl-incf and cl-decf error out when passed a nil-valued variable as 'offset'

Previous Next

Full log

Message #23 received at 31715 <at> debbugs.gnu.org (full text, mbox):

From: Clément Pit-Claudel <clement.pitclaudel <at> live.com>
To: Noam Postavsky <npostavs <at> gmail.com>,
 Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 31715 <at> debbugs.gnu.org
Subject: Re: bug#31715: cl-incf and cl-decf error out when passed a nil-valued
 variable as 'offset'
Date: Tue, 5 Jun 2018 11:19:22 -0400

[Message part 1 (text/plain, inline)]

On 2018-06-04 20:12, Noam Postavsky wrote:
> I couldn't find any other cases of optional parameters in core macros.

I'm not sure which macros count as core macros.  In cl-lib itself there's cl-assert, which seems to behave the same as cl-incf.

In the rest of Emacs there are lots of other examples.  Many of them (for example semantic-find-tags-by-name or calendar-increment-month) seem to work when passed a nil-valued variable, but many others behave like cl-incf (for example gnus-summary-article-score).

Clément.

[signature.asc (application/pgp-signature, attachment)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.