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Preventing successive remappings of a key?

From: Bastien
Subject: Preventing successive remappings of a key?
Date: Tue, 08 Sep 2020 18:55:38 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

For example, org-mode performs this remapping (in org-keys.el):

  (org-remap org-mode-map
           'kill-line              'org-kill-line
           'move-beginning-of-line 'org-beginning-of-line
           'move-end-of-line       'org-end-of-line)
... and a few more in fact.  Also, simple.el have this:

  (defvar visual-line-mode-map
    (let ((map (make-sparse-keymap)))
      (define-key map [remap kill-line] 'kill-visual-line)
      (define-key map [remap move-beginning-of-line] 'beginning-of-visual-line)
      (define-key map [remap move-end-of-line]  'end-of-visual-line)
So, when a user opens an org buffer and calls M-x visual-line-mode RET
he finds himself with C-k bound to kill-visual-line while the behavior
of org-kill-line is safer, and might be the one he wants.

Is it possible to prevent the second remapping from happening?

I guess hardcoding fundamental keybindings is Forbidden™.

  ;;; DON'T DO THIS!
  (org-defkey org-mode-map (kbd "C-a") #'org-beginning-of-line)

I can see these solutions:

- Tell the user to turn off visual-line-mode if he does not want the
  second remapping.

- Have a mechanism for detecting successive remappings and an option
  to let the user accept only one remapping, which would prevent the
  visual-line-mode remapping in this case.

The first one feels non-emacsy, the second one too hackish (if even
possible), and I cannot seem to think of anything useful here.

Any idea?


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