I do not like the standard keybinding to redo so I would like to customise it. How can I remap redo to C-S-/? I am not able to find any solution in internet.

  • Why not ask emacs how to do it ? Press C-h-f RET global-set-key RET Dec 15, 2016 at 10:16
  • See the links for this google search for "emacs map keys" for instructions on how to bind keys (the manual, FAQs, tutorials, etc.).
    – Dan
    Dec 15, 2016 at 14:19
  • @ChakravarthyRaghunandan Emacs doesn't have a redo as a separate command, so that's not quite enough...
    – npostavs
    Dec 15, 2016 at 22:33
  • @npostavs Oh yes, after using undo-tree for so long, I forgot about the default behaviour of emacs. Dec 16, 2016 at 4:17

2 Answers 2


If you haven't already try undo-tree.el. It gives Emacs a conventional undo, otherwise you need to undo the undos in order to redo--there is no redo function... With it you can add:

(global-set-key (kbd "C-s-/") 'undo-tree-redo)

to your emacs init file, or where ever you keep custom keybindings, and walk back and forward through any change.

  • By the way, undo-tree-redo is bound to to C-/ by default, which is already equivalent to C-S-? (at least on American keyboard layouts).
    – npostavs
    Dec 16, 2016 at 17:18
  • That's why I assume the question is more about how to get a conventional undo and redo...
    – junkgui
    Dec 16, 2016 at 17:19

By default, Emacs doesn't support redo with a single key-stroke.

You can do one of the following.

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