PowerShell 字符串匹配和管道字符 [英] PowerShell String Matching and the Pipe Character

问题描述

我在 PowerShell 中匹配包含管道字符的字符串有困难.Match 在以下情况下不应该返回 true:

I am having difficulty matching strings in PowerShell that contain the pipe characters. Match returns true in the following scenario when it shouldn't:

> "Debug|x86" -match "Debug|x128"
True

我尝试转义匹配参数管道字符，但这不会改变意外结果，例如:

I have tried escaping the match argument pipe character, but this doesn't change the unexpected result, e.g:

> "Debug|x86" -match "Debug`|x128" 
True

推荐答案

这是一个正则表达式，所以需要用反斜杠转义，而不是 PowerShell 的反引号，例如:

It's a regular expression so needs to be escaped with backslash, not PowerShell's backtick, e.g.:

> "Debug|x86" -match "Debug\|x128" 
False

因为它是一个正则表达式，如果管道字符没有被转义，它的计算结果是Debug or x128".

As it is a regular expression, If the pipe character is not escaped, it evaluates to "Debug or x128".

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