如何在emacs中缩进n个空格？

Question

我想缩进和整个区域n向右或向左的空格.我可以在Cc>和Cc <的某些模式下执行此操作,但我想一般这样做.

如果我需要更改我的.emacs以使其高效(使用上面的键盘快捷键)那很好.

Answer 1

对我有用的是:选择区域然后 C-u <number of spaces> C-x TAB

更新

@Eric我们可以定义一个函数并绑定到键盘快捷方式,例如C-x C-TAB.尝试将此添加到您的emacs配置中.

(defun insert-tabs (n)
  "Inserts N number of tabs"
  (interactive "nNumber of tabs: ")
  (dotimes (i n)
    (indent-for-tab-command)))

(global-set-key [?\C-x \C-tab] 'insert-tabs)

Answer 2

桑德罗答案的关键部分是打电话给indent-rigidly.

C-x TAB (translated from C-x <tab>) runs the command indent-rigidly,
which is an interactive compiled Lisp function in `indent.el'.

It is bound to C-x TAB.

(indent-rigidly start end arg)

Indent all lines starting in the region sideways by arg columns.
Called from a program, takes three arguments, start, end and arg.
You can remove all indentation from a region by giving a large negative arg.

所以,标记区域,输入数字arg,按C-x TAB.

Answer 3

我认为以下代码可以帮助您:

;; Shift the selected region right if distance is positive, left if
;; negative

(defun shift-region (distance)
  (let ((mark (mark)))
    (save-excursion
      (indent-rigidly (region-beginning) (region-end) distance)
      (push-mark mark t t)
      ;; Tell the command loop not to deactivate the mark
      ;; for transient mark mode
      (setq deactivate-mark nil))))

(defun shift-right ()
  (interactive)
  (shift-region 1))

(defun shift-left ()
  (interactive)
  (shift-region -1))

;; Bind (shift-right) and (shift-left) function to your favorite keys. I use
;; the following so that Ctrl-Shift-Right Arrow moves selected text one 
;; column to the right, Ctrl-Shift-Left Arrow moves selected text one
;; column to the left:

(global-set-key [C-S-right] 'shift-right)
(global-set-key [C-S-left] 'shift-left)

您可以将所需的值替换为(shift-region 1)和(shift-region 1).

编辑:正如你所看到的,我的函数包含了缩进:

indent-rigidly是`indent.el'中的交互式编译Lisp函数.

它与Cx TAB绑定.

(缩进刚刚开始结束)

通过ARG列缩小从区域侧面开始的所有行.从程序调用,需要三个参数,START,END和ARG.您可以通过提供较大的负ARG来删除区域中的所有缩进.

Answer 4

同样有用的是矩形命令,它们对文本的矩形而不是文本行进行操作.

例如,在标记矩形区域之后,

C-x r o插入空白区域以填充矩形区域(有效地将代码移到右侧) C-x r k杀死矩形区域(有效地将代码移到左侧)