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

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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.

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Message #77 received at 40968 <at> debbugs.gnu.org (full text, mbox):

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: Re: 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 239 days ago.

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