Question

在Emacs中编写Haskell代码时，我经常会遇到我想要改变的情况：

(foo, [])

进入

([], foo)

如果Emacs将[]识别为单词，那么我可以M-t使用transpose-words并切换它们。是否有可能以不破坏其他功能的方式实现这一目标？

Answer 1

您需要C-M-t，它运行命令transpose-sexps。

有很多命令以C-M-开头，运行s-exp命令而不是类似的基于单词的命令，例如C-M-f / C-M-b，s-exp前进/后退

此外，还有emacs.SE的Emacs Stack Exchange。

Answer 2

(defun my-transpose-function-args ()
  "Assumes to be called between arguments. "
  (interactive "*")
  (let* ((orig (point))
     (end1 (progn (skip-chars-backward " \t\r\n\f,")
              (point)))
     (beg1
      (progn 
      (skip-chars-backward "^ \t\r\n\f,(")
      (point)))
     (string1 (buffer-substring beg1 end1))
     (beg2 (copy-marker
        (progn (goto-char orig)
               (skip-chars-forward " \t\r\n\f")
               (point))))
     (end2 (copy-marker
        (progn (skip-chars-forward "^ \t\r\n\f,)")
               (point))))
     (string2 (buffer-substring beg2 end2)))
    (goto-char beg1)
    (delete-region beg1 end1)
    (insert string2)
    (goto-char beg2)
    (delete-region beg2 end2)
    (insert string1)))

转置非单词函数参数？

2 个答案: