How to map “jj” to Esc in emacs Evil mode

问题:

Recently I tried Emacs and found Evil helpful to keep my vim custom. I'm used to typing "jj" to return normal mode from insert mode like many Vimers do but don't know how to make it in Evil mode.

I map it like this but seems not correct:

(define-key evil-insert-state-map (kbd "jj") 'evil-normal-state)

回答1:

This works for me. It requires the KeyChord library:

;;Exit insert mode by pressing j and then j quickly
(setq key-chord-two-keys-delay 0.5)
(key-chord-define evil-insert-state-map "jj" 'evil-normal-state)
(key-chord-mode 1)

It is inspired by @phils answer above and based on Simon's Coding Blog: Emacs and Unity Every Day.

回答2:

I don't know whether it works with Evil, but for Emacs in general the KeyChord library is designed for this sort of thing.

Try it and see?

(key-chord-define evil-insert-state-map "jj" 'evil-normal-state)

回答3:

See this blog post: http://zuttobenkyou.wordpress.com/2011/02/15/some-thoughts-on-emacs-and-vim/ and search for "cofi". I use the "kj" version myself and it works just like Vim.

EDIT: Here is the actual code snippet from the blog post:

(define-key evil-insert-state-map "k" #'cofi/maybe-exit)

(evil-define-command cofi/maybe-exit ()
  :repeat change
  (interactive)
  (let ((modified (buffer-modified-p)))
    (insert "k")
    (let ((evt (read-event (format "Insert %c to exit insert state" ?j)
               nil 0.5)))
      (cond
       ((null evt) (message ""))
       ((and (integerp evt) (char-equal evt ?j))
    (delete-char -1)
    (set-buffer-modified-p modified)
    (push 'escape unread-command-events))
       (t (setq unread-command-events (append unread-command-events
                          (list evt))))))))

回答4:

If you're using Spacemacs then I just found that this setting (added to the beginning of user-init) works very well,

(setq-default evil-escape-key-sequence "jj")

回答5:

For my windows install, adding as part of use-package evil configuration worked for me in init.el:

(use-package evil
 :ensure t
 :config
 (evil-mode 1)
 (define-key evil-insert-state-map "jj" 'evil-normal-state)
)

For Ubuntu, I followed E. Sambo's answer.

回答6:

It's a bit more complicated - you have to watch for the previous character. This should do the trick. (the gist is for "jk", you can easily modify it for "jj" though you will note that "jk" is more efficient/faster).

回答7:

This is my own solution i've been using for some time, although i use `jf' actually.

(defun xwl-jj-as-esc ()
  (interactive)
  (if (memq evil-state '(insert replace))
      (let ((changed? (buffer-modified-p)))
          (insert "j")
          (let* ((tm (current-time))
                 (ch (read-key)))
            (if (and (eq ch ?j)
                     (< (time-to-seconds (time-since tm)) 0.5))
                (save-excursion
                  (delete-char -1)
                  (evil-force-normal-state)
                  (set-buffer-modified-p changed?))
              (insert ch))))
    (call-interactively 'evil-next-line)))

(define-key evil-insert-state-map  "j" 'xwl-jj-as-esc)
(define-key evil-replace-state-map "j" 'xwl-jj-as-esc)