如何搜索一行中的单词之间的多个空格的出现 [英] How to search for occurrences of more than one space between words in a line

问题描述

如何搜索一行中的单词之间的多个空格的发生

How to search for occurrences of more than one space between words in a line

1. this is a line containing  2 spaces
2. this is a line containing   3 spaces
3. this is a line containing multiple spaces first  second   three   four

以上都是这个正则表达式的有效匹配项。我应该使用什么正则表达式？

All the above are valid matches for this regex. What regex should I use?

推荐答案

[ ]{2,}

SPACE（2或更多）

SPACE (2 or more)

您还可以检查这些空格之前和之后的话都跟着。 （不是标签或新行的其他空格）

You could also check that before and after those spaces words follow. (not other whitespace like tabs or new lines)

\w[ ]{2,}\w

相同，但您也可以选择（捕获）仅替换的任务的空格

the same, but you can also pick (capture) only the spaces for tasks like replacement

\w([ ]{2,})\w

或者看到空格之前和之后有什么，不仅字符字符（空格除外）

or see that before and after spaces there is anything, not only word characters (except whitespace)

[^\s]([ ]{2,})[^\s]

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