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bug#1598: Please add easy key bindings for outline-(minor-)mode
From: |
Juri Linkov |
Subject: |
bug#1598: Please add easy key bindings for outline-(minor-)mode |
Date: |
Mon, 19 Jul 2021 18:34:11 +0300 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-linux-gnu) |
>> The default key bindings for outline-mode and outline-minor-mode are
>> difficult to remember and slow to use. I think the main reason is that
>> there are way too many different key-bindings to operate with outlining.
>>
>> I suggest that you make keys like M-<left> and M-<right> to act modally
>> so that they open and close one outline level at the time depending on
>> which levels and bodies are currently visible. In addition to that, and
>> to make outline navigating easy, M-<up> and M-<down> could move the
>> cursor to previous and next visible outline header.
>
> I agree that the outline commands are pretty awkward... but outline
> minor mode is used in a large number of major modes, and has to be
> consistent throughout all those modes. So M-<arrows> can't really be
> used for this, I think.
For personal customization of keys in outline-minor-mode
now there is outline-mode-cycle-map. Currently I'm experimenting
with using M-<arrows>, but still these keys conflict with some modes,
so M-<arrows> can't be bound by default.
Anyway, here is an example of customization:
#+begin_src emacs-lisp
(setq-default
outline-minor-mode-cycle t
outline-minor-mode-highlight t)
(let ((map outline-mode-cycle-map)
(cmds '(("M-<down>" outline-next-visible-heading)
("M-<up>" outline-previous-visible-heading)
;; ("M-<left>" outline-hide-subtree)
;; ("M-<right>" outline-show-subtree)
)))
(dolist (command cmds)
(define-key map (kbd (nth 0 command))
`(menu-item
"" ,(nth 1 command)
;; Only takes effect if point is on a heading.
:filter ,(lambda (cmd)
(when (and (outline-on-heading-p)
;; Exclude emacs-lisp-mode:
;; outline-minor-mode-highlight
;; BETTER:
;; (buffer-file-name (current-buffer))
buffer-read-only
)
cmd))))))
#+end_src