GNU bug report logs - #76055
29.4; Doc of string-empty-p

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Package: emacs;

Reported by: Drew Adams <drew.adams <at> oracle.com>

Date: Tue, 4 Feb 2025 20:29:01 UTC

Severity: minor

Tags: wontfix

Found in version 29.4

Done: Stefan Kangas <stefankangas <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #55 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Rudolf Schlatte <rudi <at> constantly.at>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#76055: 29.4; Doc of string-empty-p
Date: Fri, 07 Feb 2025 10:11:32 +0100

Stefan Kangas <stefankangas <at> gmail.com> writes:
>
> FWIW, I'm not suggesting any changes, but I admit that I never really
> understood this design decision.

[...]

> And in SBCL:
>
>     * (string= "foo" 'foo)
>     NIL

Common Lisp has the concept of "designators"
(https://www.lispworks.com/documentation/HyperSpec/Body/01_dae.htm).
The arguments of string= are documented to be "string designators"
(https://www.lispworks.com/documentation/HyperSpec/Body/26_glo_s.htm#string_designator).

I'm not suggesting that Emacs Lisp should introduce designators, just
trying to clear up what SBCL is doing here.
This bug report was last modified 131 days ago.

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