我怎样才能让 emacs 自动插入右大括号 [英] How can can I get emacs to insert closing braces automatically

问题描述

我刚开始使用 emacs，有一个功能我非常喜欢，但四处搜索无果.我希望其他人已经这样做了，因为我现在还不想学习 elisp.

I've just started using emacs, and there's one feature I'd really like, and searching around a bit was fruitless. I hope someone else has done this because I don't want to learn elisp just yet.

void foo()<cursor>

我想输入一个{"来导致这种情况发生

I would like typing an "{" to cause this to happen

void foo(){
    <cursor>
}

我希望这仅在 cc 模式下发生，并且仅在不在字符串/注释/等中时发生在行尾

I would like this to only happen in cc-mode, and only at the end of a line when not in a string/comment/etc

首先想到的是重新绑定{"以始终执行此操作(我自己可以弄清楚如何执行此操作)，但是很难让它仅在正确的时间发生.

The first thing that came to mind was rebinding "{" to do this always(I could figure out how to do this myself), but it would be hard to make it only happen at the right time.

任何提示将不胜感激.

推荐答案

这样做:

(defun my-c-mode-insert-lcurly ()
  (interactive)
  (insert "{")
  (let ((pps (syntax-ppss)))
    (when (and (eolp) (not (or (nth 3 pps) (nth 4 pps)))) ;; EOL and not in string or comment
      (c-indent-line)
      (insert "

}")
      (c-indent-line)
      (forward-line -1)
      (c-indent-line))))

(define-key c-mode-base-map "{" 'my-c-mode-insert-lcurly)

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