C-x C-e ;; current line
M-x eval-region ;; region
M-x eval-buffer ;; whole buffer
M-x load-file ~/.emacs.d/init.el

M-x load-file
~/.emacs

你通常可以重新计算改变的区域。标记~/区域。然后使用M-x eval-region RET。这通常比重新评估整个文件更安全，因为很容易编写一个.emacs文件，在加载两次后就不能正常工作。

尽管M-x eval-buffer可以工作，但是在切换和其他类似的事情上可能会遇到问题。更好的方法可能是“标记”或突出显示.emacs文件中的新内容(如果只是瞎折腾，甚至可以标记缓冲区)，然后是M-x eval-region。

这里有一个快速和简单的方法来快速测试您的配置。您还可以在特定的lisp末尾使用C-x C-e来单独执行某些函数。

C-x C-e runs the command eval-last-sexp (found in global-map), which is an interactive compiled Lisp function. It is bound to C-x C-e. (eval-last-sexp EVAL-LAST-SEXP-ARG-INTERNAL) Evaluate sexp before point; print value in the echo area. Interactively, with prefix argument, print output into current buffer. Normally, this function truncates long output according to the value of the variables ‘eval-expression-print-length’ and ‘eval-expression-print-level’. With a prefix argument of zero, however, there is no such truncation. Such a prefix argument also causes integers to be printed in several additional formats (octal, hexadecimal, and character). If ‘eval-expression-debug-on-error’ is non-nil, which is the default, this command arranges for all errors to enter the debugger.

你可以像这样为Emacs设置键绑定:

;; Reload Emacs configuration
(defun reload-init-file ()
  (interactive)
  (load-file "~/.emacs"))

(global-set-key (kbd "C-c r") 'reload-init-file)