NSPredicate error/behaving differently on 10.5 vs 10.6

Posted by Tristan on Stack Overflow See other posts from Stack Overflow or by Tristan
Published on 2010-05-29T01:32:51Z Indexed on 2010/05/29 1:42 UTC
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objective-c

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regex

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xcode

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macosx

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nspredicate

I am using a NSPredicate to determine if an entered email address is valid. On 10.6 it works perfectly as expected. I recently decided to get my app going on 10.5 and this is the only thing that doesn't work.

The error i get is as follows:

"Can't do regex matching, reason: Can't open pattern U_MALFORMED_SET (string [email protected], pattern ([\w-+]+(?:\.[\w-+]+)*@(?:[\w-]+\.)+[a-zA-Z]{2,7}), case 0, canon 0)"

The code im using is as follows:

NSString *regex = @"([\\w-+]+(?:\\.[\\w-+]+)*@(?:[\\w-]+\\.)+[a-zA-Z]{2,7})";

NSPredicate *regextest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];

if ([regextest evaluateWithObject:[userEmail objectValue]] == YES)

Does anyone know why this isn't working on 10.5? And how I might get it working or be able to do this test in a way compatible for both 10.5 and 10.6?

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