By default, C-_ runs the command undo (found in global-map). It also runs org-agenda-undo when in Agenda view.

As I use cua-mode, I undo changes with C-z. My issue is that it doesn't work in Agenda View. I tried to bind org-agenda-undo with C-z :

(define-key org-agenda-mode-map (kbd "C-z") 'org-agenda-undo)


(use-package org-agenda
  :ensure nil
  ("C-z" . org-agenda-undo))

But it didn't work. How can I do it without altering cua-mode behavior?

  • I put the two blocks in my init and restarted emacs twice to test each alternatively. In my init, cua-mode is enabled first. I confirm that by default C-z doesn't work on Agenda View when cua-mode is enabled (I did a test with an init only containing (cua-mode t)). Thanks for the edit.
    – crocefisso
    Commented May 29, 2023 at 21:37
  • Does this answer your question? How to assign the undo command to the Ctrl-z key binding?
    – Drew
    Commented May 29, 2023 at 22:03
  • @Drew, I don't want to remove (cua-mode t). I mean I would like to keep using cua-mode.
    – crocefisso
    Commented May 29, 2023 at 22:06
  • Maybe this helps? emacs.stackexchange.com/q/37277.
    – Drew
    Commented May 29, 2023 at 22:13
  • Also, I wonder why cua-mode isn't adapted to Agenda views...
    – crocefisso
    Commented May 29, 2023 at 22:14

2 Answers 2


Associate all the commands triggered by C-_ with C-z:

(define-key key-translation-map (kbd "C-z") (kbd "C-_"))


As you mention in the comments, the original answer defines the new keybinding globally. To set the keybdinging only in the org-agenda buffer you could use

(with-eval-after-load 'cua-base
  (defvar cua--org-agenda-keymap (copy-keymap cua--cua-keys-keymap))
  (define-key cua--org-agenda-keymap (kbd "C-z") #'org-agenda-undo))

(defun cua--org-agenda-override-keymap ()
  (setq-local cua--keymap-alist (copy-tree cua--keymap-alist))
  (setf (alist-get 'cua--ena-cua-keys-keymap cua--keymap-alist) cua--org-agenda-keymap))

(add-hook 'org-agenda-mode-hook #'cua--org-agenda-override-keymap)


From using C-h k C-z from within the org-agenda buffer, you can find that the cua-mode C-z binding is found in the cua--cua-keys-keymap. So, to define the new binding for it, just use that map (after activating cua-mode)

(define-key cua--cua-keys-keymap (kbd "C-z") 'org-agenda-undo)

  • 1
    With your solution, C-z is bound to org-agenda-undo in Agenda Views indeed. But the issue is that outside of Agenda Views it is also bound to org-agenda-undo and no longer to undo. So your solution is altering cua-mode behavior outside of Agenda Views.
    – crocefisso
    Commented May 30, 2023 at 9:02
  • Ah okay, I see. I have updated the answer... Commented May 30, 2023 at 12:24
  • Yes, I would need other cua-mode bindings in Agenda Views, like C-c (cua-copy-handler) for example.
    – crocefisso
    Commented May 30, 2023 at 13:34
  • That binding still works, see M-x describe-keymap cua--cua-keys-keymap for the commands that will be disabled. It seems to me that those bindings are not required in org-agenda. Commented May 30, 2023 at 13:41
  • 1
    Thank you @dalanicolai, I gave an upvote to your answer already. However, I think I'll accept mine (when available) as it is simpler.
    – crocefisso
    Commented May 30, 2023 at 15:38

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