在emacs中上下移动行/区域

Question

在emacs中向上或向下移动选定区域或线路(如果没有选择)的最简单方法是什么？我正在寻找与eclipse相同的功能(限制为M-up,M-down).

Answer 1

更新:move-text从Marmalade或MELPA安装包以获取以下代码.

这是我使用的,适用于区域和单独的线路:

(defun move-text-internal (arg)
  (cond
   ((and mark-active transient-mark-mode)
    (if (> (point) (mark))
        (exchange-point-and-mark))
    (let ((column (current-column))
          (text (delete-and-extract-region (point) (mark))))
      (forward-line arg)
      (move-to-column column t)
      (set-mark (point))
      (insert text)
      (exchange-point-and-mark)
      (setq deactivate-mark nil)))
   (t
    (let ((column (current-column)))
      (beginning-of-line)
      (when (or (> arg 0) (not (bobp)))
        (forward-line)
        (when (or (< arg 0) (not (eobp)))
          (transpose-lines arg)
          (when (and (eval-when-compile
                       '(and (>= emacs-major-version 24)
                             (>= emacs-minor-version 3)))
                     (< arg 0))
            (forward-line -1)))
        (forward-line -1))
      (move-to-column column t)))))

(defun move-text-down (arg)
  "Move region (transient-mark-mode active) or current line
  arg lines down."
  (interactive "*p")
  (move-text-internal arg))

(defun move-text-up (arg)
  "Move region (transient-mark-mode active) or current line
  arg lines up."
  (interactive "*p")
  (move-text-internal (- arg)))


(global-set-key [M-S-up] 'move-text-up)
(global-set-key [M-S-down] 'move-text-down)

Answer 2

可以使用绑定到的转置线移动一条线C-x C-t.关于地区的Dunno虽然.

我发现这个 elisp片段可以做你想要的,除了你需要改变绑定.

(defun move-text-internal (arg)
   (cond
    ((and mark-active transient-mark-mode)
     (if (> (point) (mark))
            (exchange-point-and-mark))
     (let ((column (current-column))
              (text (delete-and-extract-region (point) (mark))))
       (forward-line arg)
       (move-to-column column t)
       (set-mark (point))
       (insert text)
       (exchange-point-and-mark)
       (setq deactivate-mark nil)))
    (t
     (beginning-of-line)
     (when (or (> arg 0) (not (bobp)))
       (forward-line)
       (when (or (< arg 0) (not (eobp)))
            (transpose-lines arg))
       (forward-line -1)))))

(defun move-text-down (arg)
   "Move region (transient-mark-mode active) or current line
  arg lines down."
   (interactive "*p")
   (move-text-internal arg))

(defun move-text-up (arg)
   "Move region (transient-mark-mode active) or current line
  arg lines up."
   (interactive "*p")
   (move-text-internal (- arg)))

(global-set-key [\M-\S-up] 'move-text-up)
(global-set-key [\M-\S-down] 'move-text-down)

Answer 3

你应该试试drag-stuff!

它的工作原理与eclipse Alt+ Up/ Down单行,以及选定的区域行完全相同!

除此之外,它允许你用Alt+ Left/ 移动单词.Right
这正是你正在寻找的!它甚至可以从ELPA回购中获得!

其他解决方案从未对我有用.它们中的一些是有缺陷的(在改变它们的顺序时转换线,wtf？)并且其中一些正在移动精确选择的区域,在它们的位置留下未选择的线部分.但drag-stuff就像在日食中一样!

还有更多!您可以尝试选择一个区域并使用Alt+ Left/ Right!这会将所选区域向左或向右移调一个字符.惊人!

要全局启用它,只需运行以下命令:

(drag-stuff-global-mode)

Answer 4

我已经写了几个用于上下移动线的交互式功能:

;; move line up
(defun move-line-up ()
  (interactive)
  (transpose-lines 1)
  (previous-line 2))

(global-set-key [(control shift up)] 'move-line-up)

;; move line down
(defun move-line-down ()
  (interactive)
  (next-line 1)
  (transpose-lines 1)
  (previous-line 1))

(global-set-key [(control shift down)] 'move-line-down)

键绑定是IntelliJ IDEA风格,但您可以使用任何您想要的.我应该实现一些在区域上运行的函数.

Answer 5

这是我的代码片段，用于移动当前行或活动区域跨越的行。它尊重光标位置和突出显示的区域。当该区域不在线边界处开始/结束时，它不会断线。（它的灵感来自日食；我发现日食方式比“转置线”更方便。）

;; move the line(s) spanned by the active region up/down (line transposing)
;; {{{
(defun move-lines (n)
  (let ((beg) (end) (keep))
    (if mark-active 
        (save-excursion
          (setq keep t)
          (setq beg (region-beginning)
                end (region-end))
          (goto-char beg)
          (setq beg (line-beginning-position))
          (goto-char end)
          (setq end (line-beginning-position 2)))
      (setq beg (line-beginning-position)
            end (line-beginning-position 2)))
    (let ((offset (if (and (mark t) 
                           (and (>= (mark t) beg)
                                (< (mark t) end)))
                      (- (point) (mark t))))
          (rewind (- end (point))))
      (goto-char (if (< n 0) beg end))
      (forward-line n)
      (insert (delete-and-extract-region beg end))
      (backward-char rewind)
      (if offset (set-mark (- (point) offset))))
    (if keep
        (setq mark-active t
              deactivate-mark nil))))

(defun move-lines-up (n)
  "move the line(s) spanned by the active region up by N lines."
  (interactive "*p")
  (move-lines (- (or n 1))))

(defun move-lines-down (n)
  "move the line(s) spanned by the active region down by N lines."
  (interactive "*p")
  (move-lines (or n 1)))