在 emacs 中向上或向下移动选定区域或行(如果没有选择)的最简单方法是什么?我正在寻找与 eclipse 中相同的功能(仅限于 M-up、M-down)。
更新: 从 Marmalade 或
MELPA安装
move-text
软件包以获取以下代码。
这是我使用的,它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)
可以使用绑定到 C-x C-t
的
transpose-lines来移动线条。不过我不知道地区。
我发现 this elisp 片段可以做你想要的事情,除了你需要更改绑定。
(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)
drag-stuff
!
它的工作方式与 Eclipse Alt+Up/Down 对于单行以及选定区域行完全相同!
此外,它还允许您使用 Alt+Left/Right
移动单词
这正是您正在寻找的!它甚至可以从 ELPA 存储库获得!
其他解决方案对我来说从来没有用过。其中一些是错误的(在改变顺序的同时调换线条,wtf?),其中一些正在移动精确选定的区域,将线条的未选定部分留在其位置上。但是
drag-stuff
的工作方式与 Eclipse 中的完全一样!
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调换一个字符。太棒了!
要全局启用它,只需运行以下命令:
(drag-stuff-global-mode)
我编写了几个用于向上/向下移动行的交互函数:
;; 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)
按键绑定是 IntelliJ IDEA 风格,但您可以使用任何您想要的。我可能也应该实现一些在区域上运行的函数。
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。当该区域不在线条边界处开始/结束时,它不会断线。 (它的灵感来自 eclipse;我发现 eclipse 的方式比“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)))
没有内置的。您可以使用转置线 (C-x C-t),但不能重复使用。查看 http://www.schuerig.de/michael/blog/index.php/2009/01/16/line-movement-for-emacs/.
上的函数适应地区也应该很容易。
transpose-paragraph
功能可以帮助您。
您可能还想查看 Emacs 手册中的 transpose 部分。 本质上:
C-t
Transpose two characters (transpose-chars).
M-t
Transpose two words (transpose-words).
C-M-t
Transpose two balanced expressions (transpose-sexps).
C-x C-t
Transpose two lines (transpose-lines).
为此,我使用 smart-shift 包(在 Melpa 中)。 默认情况下,它会重新绑定
C-C <arrow>
以移动线条或区域。 它水平移动主要模式特定的量(例如 c-basic-offset 或 python-indent-offset)。 也适用于区域。
;; binds C-C <arrows>
(when (require 'smart-shift nil 'noerror)
(global-smart-shift-mode 1))
这是一个老问题,但今天(2024 年)我使用 move-dup 来解决这个问题。 :)