<example regular expression here> work in NotePad++?
closed as not a real question by grawity, 8088, Wuffers, DragonLord, Hello71 Sep 25 '11 at 17:21
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NotePad++ is missing many common regex features, and some others have unusual syntax.
The correct documentation for regular expressions is a bit hard to find, and as Daniel points out, there's even documentation that says they meet Posix, which isn't right.