Context-aware commands completion?
reddit / emacs

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mmontone · 2022-04-02 15:56

Let's say I'm editing a Markdown document, markdown-mode is active.

I would like to type: `M-x link TAB`, and see `markdown-insert-link`
as one of the first options in the completion list, because markdown-
mode is currently active. I don't want to have to enter 'markdown',
that should be inferred from the context.

I thought that a menus commands completion could be pretty close to
what I'm looking, since often menus have the most relevant commands
for the active modes.

I've found [LaCarte](https://www.emacswiki.org/emacs/LaCarte) library,
that lets me execute menu-bar menu commands from the keyboard, using
completion. That's pretty close to what I want, but its icycles
completion is not working very well for me.

I wonder if there other options out there? Or ideas on how to
implement? (I can do some Emacs lisp).

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poinkalum · 2022-04-02 16:05

Emacs 28 ships `execute-extended-command-for-buffer` which is pretty
much what you want.
[Here](https://lars.ingebrigtsen.no/2021/02/16/command-discovery-in-
emacs/) is an article from Lars Ingebrigtsen that explains the
feature.

What version of Emacs are you using ?

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mmontone · 2022-04-02 16:22

I'm on Emacs 29. I'll give it a try, thanks.

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mmontone · 2022-04-02 16:31

Wow. That is exactly what I was looking for. I didn't expect to be so
easy. Thanks!

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00-11 · 2022-04-02 16:32

[La Carte](https://www.emacswiki.org/emacs/LaCarte) is independent of
[Icicles](https://www.emacswiki.org/emacs/Icicles).

La Carte makes use of `completing-read`. Whatever completion framework
or `completion-styles` you use, it is *they* that determine what
`completing-read` does. You should be able to use La Carte with any of
them.

If you do use Icicles with La Carte then you get Icicles possibilities
for completing. There are a number of [completion
methods](https://www.emacswiki.org/emacs/Icicles_-
_Completion_Methods_and_Styles) you can use, including various fuzzy
matching methods, and of course you can use `completion-styles` as
usual.

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mmontone · 2022-04-02 16:40

Ah, good. Yes, I see I have a problem with my completion system. I
have `completion-style` set to `flex` (I want it that way). But when
completing, I would like the completed list to get focus and navigate
it using the keyboard, not the mouse. But that's not LaCarte specific.

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mmontone · 2022-04-02 16:51

Just for reference, this fixed my problem with the completions list
interaction:

(define-key minibuffer-mode-map  (kbd "<down>") 'switch-to-
completions)

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organic-bookworm · 2022-04-02 17:13

If you use [consult](https://github.com/minad/consult#modes), there's
also `consult-mode-command`.

>Run a command from the currently active minor or major modes.
Supports narrowing to local-minor/global-minor/major mode via the keys
`l/g/m`.