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I am in terminal mode on Ubuntu, and I'm running emacs with 2 buffers open, one is a ruby file, and the other is a shell (opened by typing M-x shell ), and when I switch to the shell buffer, I want to run the same command that I ran before. I would normally just hit the up arrow in a terminal window, but in emacs, it simply puts the cursor up one line.
Does anyone know of keystroke to run the previous shell command from within an emacs shell?
M-p does the job
(require readline) before some Emacs shortcuts work in the REPL.
Jun 14, 2022 at 19:53
In addition to M-p, you can also use C-up, which I find preferable. The complementary keys M-n or C-down will get you the next command in history.
C-up is mapped to expose. And M-p feels more natural to me.
Oct 8, 2014 at 9:32
You might also add this to your emacs init file:
(define-key comint-mode-map (kbd "<up>") 'comint-previous-input)
(define-key comint-mode-map (kbd "<down>") 'comint-next-input)
thiagowfx solution is preferable to me, since I usually try to avoid context-dependency. However, in order for it to work I had to add loading comint mode first:
(progn(require 'comint)
(define-key comint-mode-map (kbd "<up>") 'comint-previous-input)
(define-key comint-mode-map (kbd "<down>") 'comint-next-input))
DeLorean88's answer worked for me, but only with a second closing bracket on the "progn" line:
(progn(require 'comint))
(define-key comint-mode-map (kbd "<up>") 'comint-previous-input)
(define-key comint-mode-map (kbd "<down>") 'comint-next-input))
