GNU bug report logs - #40968
28.0.50; (apply nil)

Previous Next

Package: emacs;

Reported by: Pip Cet <pipcet <at> gmail.com>

Date: Wed, 29 Apr 2020 18:27:02 UTC

Severity: normal

Tags: fixed

Found in version 28.0.50

Fixed in version 28.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

Full log

View this message in rfc822 format

From: Pip Cet <pipcet <at> gmail.com>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 40968 <at> debbugs.gnu.org, Stefan Kangas <stefan <at> marxist.se>, Noam Postavsky <npostavs <at> gmail.com>
Subject: bug#40968: 28.0.50; (apply nil)
Date: Wed, 6 May 2020 19:21:54 +0000

On Wed, May 6, 2020 at 7:17 PM Drew Adams <drew.adams <at> oracle.com> wrote:
> And if Elisp follows that (which I think it should,
> unless someone can present a good use case for just
> (apply FUNCTION)), then it should raise an error if
> there are not at least two args.

Note that single-argument apply in current Elisp is not (apply
FUNCTION) but (apply LIST-OF-FUNCTION-PLUS-ARGS).

(apply '+) is an error.
(apply '(+)) is 0.

That's why the problem with (apply nil) arose.
This bug report was last modified 4 years and 238 days ago.

Previous Next

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