(setq comint-mode-map (make-sparse-keymap))
(define-key comint-mode-map "\ep" 'comint-previous-input)
(define-key comint-mode-map "\en" 'comint-next-input)
+ (define-key comint-mode-map [C-up] 'comint-previous-input)
+ (define-key comint-mode-map [C-down] 'comint-next-input)
(define-key comint-mode-map "\er" 'comint-previous-matching-input)
(define-key comint-mode-map "\es" 'comint-next-matching-input)
(define-key comint-mode-map [?\A-\M-r] 'comint-previous-matching-input-from-input)