[debbugs-tracker] bug#13948: closed (no key-binding-locus)

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Your message dated Thu, 12 Jun 2014 18:09:43 +0200
with message-id <address@hidden>
and subject line Re: bug#13948: no key-binding-locus
has caused the debbugs.gnu.org bug report #13948,
regarding no key-binding-locus
to be marked as done.

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13948: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13948
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--- Begin Message --- Subject: no key-binding-locus Date: Wed, 13 Mar 2013 16:34:48 -0400

Why isn't there a key equivalent to variable-binding-locus? As

in, a way to figure out where a particular keybinding is coming

from. For example,

    M-x key-binding-locus C-j

would evaluate to 'lisp-interaction-mode-map, which is the first

map in which C-j was found.

In terms of implementation, the process for finding a binding is

described in (info "(elisp) Searching Keymaps"):

    ...Here is a pseudo-Lisp description of the order and

    conditions for searching them:

     (or (cond

          (overriding-terminal-local-map

           (FIND-IN overriding-terminal-local-map))

          (overriding-local-map

           (FIND-IN overriding-local-map))

          ((or (FIND-IN (get-char-property (point) 'keymap))

       (FIND-IN-ANY emulation-mode-map-alists)

       (FIND-IN-ANY minor-mode-overriding-map-alist)

       (FIND-IN-ANY minor-mode-map-alist)

       (if (get-text-property (point) 'local-map)

           (FIND-IN (get-char-property (point) 'local-map))

         (FIND-IN (current-local-map))))))

         (FIND-IN (current-global-map)))

So implementing key-binding-locus would only be a small tweak of

the key lookup code: the first time you find the key, just return

the map you found it in, rather than the command it's supposed to

call.

Thanks,

Brian

--- End Message ---

> --- Begin Message ---
>
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> Subject: 
>
> Re: bug#13948: no key-binding-locus
>
>
>
>
> Date: 
>
> Thu, 12 Jun 2014 18:09:43 +0200
>
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> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/24.3.91 (gnu/linux)
>
>
>
>
> Stefan Monnier <address@hidden> writes:
> >> Here's another attempt. Like the previous patch, I define
> >> key-binding-keymap which finds the keymap by mimicking key-binding, and
> >> describe-key--binding-locus which matches the keymap to a symbol and
> >> makes a description suitable for describe-key.
> >
> > Looks pretty good.  Feel free to install it into `trunk'.
>
> It seems I have done that in revision 117324 (thanks to vc.el)
>
> -- 
> Nico.
>
>
> --- End Message ---