在.emacs中加入如下代码：
(defun no-e-please ()
(interactive)
(message "Please don't use the letter e"))
(global-set-key (kbd "C-e") 'no-e-please)
重新加载.emacs M-x load-file ~/.emacs
输入快捷键C-e即可看到Please don't use the letter e
或在文本中输入(no-e-please) C-x C-e
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