如何用“ "替换前导空格(仅)在 Vim 中? [英] How to replace leading spaces (only) with " " in Vim?

问题描述

这个问题我遇到过很多次了:我有一段源代码，但是如果我将其复制并粘贴到 Wordpress 中并用 <code>...</code> 标签括起来，则开头的空格会被压缩"合二为一.

I’ve had this problem many times: I have a piece of source code, but if I copy and paste it into Wordpress and enclose it with the <code>...</code> tags, the beginning spaces are "compressed" into one.

因此，我想知道如何通过   更改仅行开头的所有空格，例如，

Thus I’d like to know how I could change all the spaces only at the beginning of the line by  , so that, for example,

    extend: 'Ext.panel.Panel',

变成

    extend: 'Ext.panel.Panel',

推荐答案

我可以通过三种方法来实现所需的编辑看，下面按我个人喜好的顺序列出.

There are three approaches to implement the desired edit that I can see, listed below in the order of my personal preference.

1. 使用前置原子匹配语法的替换(见 :help \@<=):

 :%s/\%(^ *\)\@<= /\&nbsp;/g

如果命令的简洁性很重要，可以缩短它使用非常神奇"的模式(见 :help \v)通过改变非捕获组 (:help \%() 到捕获组:

If brevity of the command is crucial, one can shorten it using the "very magic" mode (see :help \v) by changing the non-capturing group (:help \%() to a capturing one:

 :%s/\v(^ *)@<= /\&nbsp;/g

一个两阶段的替换，在前导之后分割一行空格，替换这些空格，然后重新加入该行:

A two-staged substitution that splits a line just after the leading spaces, replaces those spaces, and rejoins that line:

 :g/^/s/^ \+/&\r/|-s/ /\ /g|j!

另一种两步替换，替换每个前导文本中未出现的某些符号的空格，并更改那个符号到  :

 :exe "g/^ \\+/norm!v//e\rr\r" | %s/\r/\ /g

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