如何不捕获正则表达式中的竖线？

Question

I have this regex

([=|"| |_|\\w]*) , but regex101.com is telling me that | is one of the characters that's included in the group to be able to match, but I just want the characters = or " or or _ or \\w to be matched.

Does anyone know whats wrong?

Thanks

Answer 1

Inside a character sets ( [] ) | has no special meaning (it will match literally). In fact character sets have implicit or on their members. Just use [=" _\\w]*

Answer 2

You just need to use ([="\\s_\\w]*) . It will match any of the combination of the elements.

[] : Matches a single character that is contained within the brackets

There is no need for | inside []

Answer 3

(?:=|"| |_|\w)*

You can use this. | inside [] is just a character without special meaning.

Answer 4

no need for the | , inside of [] it is already implied

([="\s_\w]*)

^is basically the exact thing you are trying to do.

unless you meant this:

([=]|["]|[\s]|[_]|[\w]*)