Whenever I currently do M-x slime, it creates a split buffer, with SLIME going in the bottom half. This is not really very desirable - I'd much rather SLIME appeared in a separate frame, and kept its REPL there. Is there a way I can make it so that when I do M-x slime, it will create a new frame, and open the SLIME REPL there?

  • Related: emacs.stackexchange.com/q/2194/115 Nov 14, 2014 at 11:26
  • 1
    I believe that you want the new window to appear in a new pop-up frame as your accepted answer does that. Can you reword your question to reflect that if that's the case? Nov 14, 2014 at 11:29

1 Answer 1


You can achieve this by adjusting the value of display-buffer-alist:

(setq display-buffer-alist
      (quote (("\\*inferior-lisp\\*" display-buffer-pop-up-frame

This setting tells Emacs that a buffer with the name matching the regular expression "\*inferior-lisp\*" should be displayed in a new (pop-up) frame.

(You can also customize this variable.)

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