Regular Expressions

[PartyPooper]

Hi all, I know that there are various implementations of RegEx's floating around and was just wondering if the \w and \W matching characters are suppose to be equivalent to [a-zA-Z0-9_] and [^a-zA-Z0-9_] respectively (like in python) or just [a-zA-Z_] and [^a-zA-Z_] ?

Cheers

[LxP]

The help file suggests that \w matches A-Z, a-z and _ only.

Edit: Python is weird.

Edited November 26, 2005 by LxP

[PartyPooper]

Yeah, figured that after the expression failed. Was trying to limit the characters to valid filename ones and have got [^a-zA-Z0-9_-]. Just gotta figure out how to allow a space character now.

P.S. I hate regex's - confuse the hell outta me everytime

[PartyPooper]

Well that was easier than I thought - just changed it to [^ a-zA-Z0-9_-] and it seems to work

[LxP]

I'm not sure that the hyphen will be matched (which seems to be what you want). Try escaping it:

[^ a-zA-Z0-9_\-]

[PartyPooper]

It matched ok here as is. The space didn't when I added it to the end but it did when I moved it to the beginning of the expression. Maybe it has something to do with precedence?