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.NET Forum / Visual Studio.NET / IDE / December 2005is this regular expression bug?
hi, in vs.net 2003, i want to use colo(u{1}r|r) to search colour or color, but it only matchs colour! 1) if i use colo(u{1}r|a), it will match colour or coloua. 2) if i use colo(ur|r), it will match color or colour. it seems that something different between only literal expression and expression with meta-charactor! it raises my eyebrow! what's reason? thanks > in vs.net 2003, i want to use colo(u{1}r|r) to search colour or color, > but it only matchs colour! > > 1) if i use colo(u{1}r|a), it will match colour or coloua. No, actually it will match "coloa", not "coloua". > 2) if i use colo(ur|r), it will match color or colour. > > it seems that something different between only literal expression and > expression with meta-charactor! No. "u{1}" means 'one and only one u" - it's exactly the same as "u". What you really want to match is either coloru{0,1}r or just colou?r  Signature<http://www.midnightbeach.com> coloru{0,1} and colou?r are both useless in the vs.net ide > > in vs.net 2003, i want to use colo(u{1}r|r) to search colour or color, > > but it only matchs colour! [quoted text clipped - 17 lines] > > colou?r > coloru{0,1} and colou?r are both useless in the vs.net ide Yes, I noticed after I started checking the regex that this was the ide group, and that you said "in vs.net 2003" - but I wasn't sure if you really meant IDE regexs, or were just being lame. (One sees so much of the latter.) Sorry, can't help you with IDE regexs. I do wonder why they don't just use the real, FCL Regex .... > > > in vs.net 2003, i want to use colo(u{1}r|r) to search colour or color, > > > but it only matchs colour! [quoted text clipped - 17 lines] > > > > colou?r Signature<http://www.midnightbeach.com> Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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