使用Emacs缩进（shift 4）代码 [英] Using Emacs to indent (shift 4) code

问题描述

我使用 ViewSourceWith
和Emacs编辑我的StackOverflow答案和问题。通常，我包括代码和 StackOverflow格式化规则
表示必须缩进四个空格以被识别为
这样。

I edit my StackOverflow answers and questions with ViewSourceWith and Emacs. Often, I include code and StackOverflow formatting rules say that it must be indented by four spaces to be recognized as such. Doing it by hand or even with macros is painful.

我在以前的帖子中搜索过，但没有发现任何内容。

I searched in SO's previous postings but found nothing.

从Python模式开始，我写道：

Starting from the Python mode, I wrote:

(defun text-shift-region (start end count)
  "Indent lines from START to END by COUNT spaces."
  (save-excursion
(goto-char end)
(beginning-of-line)
(setq end (point))
(goto-char start)
(beginning-of-line)
(setq start (point))
(indent-rigidly start end count)))

(defun text-shift-region-right (start end &optional count)
  "Shift region of code to the right
   Stolen from python-mode.
   The lines from the line containing the start of the current region up
   to (but not including) the line containing the end of the region are
   shifted to the right, by `text-indent-offset' columns.

   If a prefix argument is given, the region is instead shifted by that
   many columns.  With no active region, indent only the current line."
  (interactive
   (let ((p (point))
     (m (mark))
     (arg current-prefix-arg))
 (if m
     (list (min p m) (max p m) arg)
   (list p (save-excursion (forward-line 1) (point)) arg))))
  (text-shift-region start end (prefix-numeric-value
              (or count text-indent-offset)))
  )

;; Code in StackOverflow must be marked by four spaces at the
;; beginning of the line
(setq text-indent-offset 4)
(global-set-key "\C-c>" 'text-shift-region-right)

它似乎工作，但我欢迎咨询，替代方案，错误报告，
等。

It seems to work but I welcome advices, alternatives, bug reports, etc.

推荐答案

Cx TAB运行 indent-rigidly 。给出四个数字参数，它会做你想要的。或者使用< pre< code>来介绍你的代码（参见 Markdown Editing Help 的第一段）。

C-x TAB runs indent-rigidly. Given a numerical argument of four it will do what you want. Alternatively use <pre><code> to introduce your code (see the first paragraph of Markdown Editing Help).

编辑：您的交互式声明将更好地写成：

your interactive declaration would better be written:

(interactive "r
p")

这篇关于使用Emacs缩进（shift 4）代码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！