GNU bug report logs - #25797
Subject: 25.2; enhancement-request: expose ibuffer filter keymap as a named prefix

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

From: ivan <ivan.brennan <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Subject: 25.2; enhancement-request: expose ibuffer filter keymap as a
 named prefix
Date: Sun, 19 Feb 2017 14:16:22 -0500

ibuffer uses "/" as a prefix key for filter commands, like
ibuffer-filter-by-name ("/ n").

As an evil user, I wanted to use a different prefix, since evil uses
"/" for searching.

I use "SPC" as a leader-key, so I decided to put the filter commands
behind "SPC /".

The ibuffer "/" prefix is an anonymous keymap, so I had to bind my new
key to the result of a lookup-key call:

(bind-map-for-mode-inherit ivan/ibuffer-leader-map ivan/leader-map
  :major-modes (ibuffer-mode)
  :bindings
  ("/" (lookup-key ibuffer-mode-map "/")))  ; <= here

This works, but it would be nice if ibuffer's "/" prefix was bound to
a named keymap, so the above line could instead be something like:

("/" ibuffer-filter-map)

Message #8 received at 25797 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: ivan <ivan.brennan <at> gmail.com>
Cc: 25797 <at> debbugs.gnu.org
Subject: Re: bug#25797: Subject: 25.2; enhancement-request: expose ibuffer
 filter keymap as a named prefix
Date: Fri, 26 Jul 2019 14:45:05 +0200

ivan <ivan.brennan <at> gmail.com> writes:

> ibuffer uses "/" as a prefix key for filter commands, like
> ibuffer-filter-by-name ("/ n").
>
> As an evil user, I wanted to use a different prefix, since evil uses
> "/" for searching.
>
> I use "SPC" as a leader-key, so I decided to put the filter commands
> behind "SPC /".
>
> The ibuffer "/" prefix is an anonymous keymap, so I had to bind my new
> key to the result of a lookup-key call:
>
> (bind-map-for-mode-inherit ivan/ibuffer-leader-map ivan/leader-map
>   :major-modes (ibuffer-mode)
>   :bindings
>   ("/" (lookup-key ibuffer-mode-map "/")))  ; <= here
>
> This works, but it would be nice if ibuffer's "/" prefix was bound to
> a named keymap, so the above line could instead be something like:
>
> ("/" ibuffer-filter-map)

Sounds reasonable.  I've now done this on the Emacs trunk.

(I kept the slightly eccentric way of specifying keys, though:

    (define-key map (kbd "m") 'ibuffer-filter-by-used-mode)
    (define-key map (kbd "M") 'ibuffer-filter-by-derived-mode)
    (define-key map (kbd "n") 'ibuffer-filter-by-name)

Most of these are redundant, but I guess it's a stylistic choice, so I
kept it.)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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