GNU bug report logs - #78593
31.0.50; describe-key broken on interactive lambdas

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Madhu <enometh <at> meer.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; describe-key broken on interactive lambdas
Date: Mon, 26 May 2025 21:16:22 +0530 (IST)

On recent master, but this seems to have been broken for a while:

$ emacs -Q -eval '(define-key global-map (kbd "<f11>") (lambda () (interactive) (bury-buffer)))'

C-h v <f11>

throws an error:

function-get: Wrong type argument: symbolp, #[nil ((bury-buffer)) (t) nil nil nil]

Acktually the *Help* buffer is formatted with sufficient information,
but the error prevents it from being displayed.

-- Madhu

Message #8 received at 78593 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Madhu <enometh <at> meer.net>, Stefan Kangas <stefankangas <at> gmail.com>
Cc: 78593 <at> debbugs.gnu.org
Subject: Re: bug#78593: 31.0.50; describe-key broken on interactive lambdas
Date: Mon, 26 May 2025 19:46:21 +0300

> Date: Mon, 26 May 2025 21:16:22 +0530 (IST)
> From: Madhu <enometh <at> meer.net>
> 
> On recent master, but this seems to have been broken for a while:
> 
> $ emacs -Q -eval '(define-key global-map (kbd "<f11>") (lambda () (interactive) (bury-buffer)))'
> 
> C-h v <f11>
> 
> throws an error:
> 
> function-get: Wrong type argument: symbolp, #[nil ((bury-buffer)) (t) nil nil nil]
> 
> Acktually the *Help* buffer is formatted with sufficient information,
> but the error prevents it from being displayed.

Thanks.

Stefan, this is due to your change:

  commit a4ec9ca12969018cdf15b8cc713b3ba054326f99
  Author:     Stefan Kangas <stefankangas <at> gmail.com>
  AuthorDate: Tue Apr 1 21:25:33 2025 +0200
  Commit:     Stefan Kangas <stefankangas <at> gmail.com>
  CommitDate: Tue Apr 1 21:25:33 2025 +0200

      function-put: signal error with non-symbol

      * lisp/subr.el (function-get): Signal an error if given a non-symbol
      for consistency with 'get'.
      * test/lisp/subr-tests.el (subr-butlast): Test for the above.

Any reasons not to revert that?  function-get correctly returns nil if
its argument is not a symbol, so why should this signal an error?

Message #11 received at 78593 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: stefankangas <at> gmail.com
Cc: 78593 <at> debbugs.gnu.org, enometh <at> meer.net
Subject: Re: bug#78593: 31.0.50; describe-key broken on interactive lambdas
Date: Sat, 07 Jun 2025 11:40:32 +0300

Ping!  Stefan, please chime in.

> Cc: 78593 <at> debbugs.gnu.org
> Date: Mon, 26 May 2025 19:46:21 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> 
> > Date: Mon, 26 May 2025 21:16:22 +0530 (IST)
> > From: Madhu <enometh <at> meer.net>
> > 
> > On recent master, but this seems to have been broken for a while:
> > 
> > $ emacs -Q -eval '(define-key global-map (kbd "<f11>") (lambda () (interactive) (bury-buffer)))'
> > 
> > C-h v <f11>
> > 
> > throws an error:
> > 
> > function-get: Wrong type argument: symbolp, #[nil ((bury-buffer)) (t) nil nil nil]
> > 
> > Acktually the *Help* buffer is formatted with sufficient information,
> > but the error prevents it from being displayed.
> 
> Thanks.
> 
> Stefan, this is due to your change:
> 
>   commit a4ec9ca12969018cdf15b8cc713b3ba054326f99
>   Author:     Stefan Kangas <stefankangas <at> gmail.com>
>   AuthorDate: Tue Apr 1 21:25:33 2025 +0200
>   Commit:     Stefan Kangas <stefankangas <at> gmail.com>
>   CommitDate: Tue Apr 1 21:25:33 2025 +0200
> 
>       function-put: signal error with non-symbol
> 
>       * lisp/subr.el (function-get): Signal an error if given a non-symbol
>       for consistency with 'get'.
>       * test/lisp/subr-tests.el (subr-butlast): Test for the above.
> 
> Any reasons not to revert that?  function-get correctly returns nil if
> its argument is not a symbol, so why should this signal an error?
> 
> 
> 
> 

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