GNU bug report logs - #79206
29.4; cl-defgeneric docstring is incorrect

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Message #19 received at 79206-done <at> debbugs.gnu.org (full text, mbox):

From: Sean McAfee <eefacm <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 79206-done <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#79206: 29.4; cl-defgeneric docstring is incorrect
Date: Sun, 10 Aug 2025 13:09:43 -0700

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Oops!  I just sent this reply to Eli only.  Resending...

On Sun, Aug 10, 2025 at 1:46 AM Eli Zaretskii <eliz <at> gnu.org> wrote:

> Thanks, I've now fixed the doc string on the emacs-30 release branch
> to say that, and I'm therefore closing this bug.
>

Actually, I notice now that even without a DEFAULT-BODY, ARGS is
type-checked:

ELISP> (cl-defgeneric foo 0)
*** Eval error ***  Wrong type argument: sequencep, 0
ELISP> (cl-defgeneric foo "")
*** Eval error ***  Unrecognized usage format
ELISP> (cl-defgeneric foo [])
*** Eval error ***  Wrong type argument: listp, []

But:

ELISP> (cl-defgeneric foo nil)
nil
ELISP> (cl-defgeneric bar 'bar)
nil

(I dunno why that last one passes.)

So ARGS is not really ignored, even if its value is not used.

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