GNU bug report logs - #52374
keymap-lookup with prefixes returns nil

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Package: emacs;

Reported by: Stefan Kangas <stefan <at> marxist.se>

Date: Wed, 8 Dec 2021 12:22:02 UTC

Severity: normal

Fixed in version 29.1

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

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#52374; Package emacs. (Wed, 08 Dec 2021 12:22:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Stefan Kangas <stefan <at> marxist.se>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Wed, 08 Dec 2021 12:22:02 GMT) Full text and rfc822 format available.

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

From: Stefan Kangas <stefan <at> marxist.se>
To: bug-gnu-emacs <at> gnu.org
Subject: keymap-lookup with prefixes returns nil
Date: Wed, 8 Dec 2021 13:21:10 +0100

Run emacs -Q, type `M-x re-builder RET' and then `C-c C-q':

Now evaluate:

    (lookup-key reb-mode-map "\C-c")
    => (keymap (21 . reb-force-update) (2 . reb-change-target-buffer) ...)

Compare this to:

    (keymap-lookup reb-mode-map "C-c")
    => nil

Is the second result expected, or is it a bug?
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#52374; Package emacs. (Fri, 10 Dec 2021 12:13:01 GMT) Full text and rfc822 format available.

Message #8 received at 52374 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 52374 <at> debbugs.gnu.org
Subject: Re: bug#52374: keymap-lookup with prefixes returns nil
Date: Fri, 10 Dec 2021 13:11:43 +0100

Stefan Kangas <stefan <at> marxist.se> writes:

> Run emacs -Q, type `M-x re-builder RET' and then `C-c C-q':
>
> Now evaluate:
>
>     (lookup-key reb-mode-map "\C-c")
>     => (keymap (21 . reb-force-update) (2 . reb-change-target-buffer) ...)
>
> Compare this to:
>
>     (keymap-lookup reb-mode-map "C-c")
>     => nil
>
> Is the second result expected, or is it a bug?

It's a bug.  Should be fixed now.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
bug marked as fixed in version 29.1, send any further explanations to 52374 <at> debbugs.gnu.org and Stefan Kangas <stefan <at> marxist.se> Request was from Lars Ingebrigtsen <larsi <at> gnus.org> to control <at> debbugs.gnu.org. (Fri, 10 Dec 2021 12:13:02 GMT) Full text and rfc822 format available.
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#52374; Package emacs. (Fri, 10 Dec 2021 13:34:02 GMT) Full text and rfc822 format available.

Message #13 received at 52374 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 52374 <at> debbugs.gnu.org
Subject: Re: bug#52374: keymap-lookup with prefixes returns nil
Date: Fri, 10 Dec 2021 13:33:09 +0000

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

> It's a bug.  Should be fixed now.

Thanks!  Does this deserve a unit test?
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#52374; Package emacs. (Fri, 10 Dec 2021 13:36:02 GMT) Full text and rfc822 format available.

Message #16 received at 52374 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 52374 <at> debbugs.gnu.org
Subject: Re: bug#52374: keymap-lookup with prefixes returns nil
Date: Fri, 10 Dec 2021 14:34:51 +0100

Stefan Kangas <stefan <at> marxist.se> writes:

> Thanks!  Does this deserve a unit test?

Probably...  many of those smaller keymap-* functions were added in a
hurry while I was finishing up things and aren't well tested.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Sat, 08 Jan 2022 12:24:10 GMT) Full text and rfc822 format available.
This bug report was last modified 2 years and 101 days ago.

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