I can't get simultaneous presses of Ctrl + Option and other keys to register in Emacs. For example, if I press Ctrl-h c (describe-key-briefly) and then Ctrl-Opt-f, it doesn't recognize that I've pressed any keys.

Ctrl key combinations (like C-f) work, Meta key combinations (like M-f) work, and Escape + Ctrl sequences work ( C-F translates to C-M-f). The behavior is the same if Emacs is run

I'm using Emacs 26.1, installed via Homebrew.

  • Are you using Emacs in a terminal?
    – user12563
    Mar 26, 2019 at 17:06
  • I had the same behavior with Emacs in a terminal or in its own window.
    – Sboisen
    Mar 30, 2019 at 1:49

1 Answer 1


Answering for others who may have this problem. Another application (in my case Magnet, a window manager) was stealing specific combinations of Ctrl and Option.


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