Why doesn't this regex work in Notepad++ (Windows)?

问题:

The following regex works when I test it here: https://regex101.com/r/oxsNRW/2

(toString\(\)[\s\S]+\))(\s*\R\s*?})

However, when I put the same input and regex into Notepad++ on Windows 10 it says the regex is invalid. Why?

回答1:

Notepad++ regex flavor is Boost, and its regex syntax is a bit different from PCRE.

In your case, escape the }:

(toString\(\)[\s\S]+\))(\s*\R\s*\})                                 ^^

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