In Emacs, what is the opposite function of other-window (C-x o)? [duplicate]

Provide a negative argument with C-u - (“Control+U” then “minus”), or even more simply C-- (“Control minus”).

  • Move to previous window: C-- C-x o
  • Move to previous frame: C-- C-x 5 o

From code, (other-window -1) or (other-frame -1) will do the same thing.

Check out the help for the key you want to reverse (e.g. C-h k C-x o to show help for C-x o) and if it says “A negative argument…” you know you can use C--.

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