[ale] Code/logic collection question

[greg at turnstep.com]

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> BTW - what is the regular expression for a valid email
> address? I'm afraid it was beating me up under grep. 

As someone already mentioned, the proper one is from 
the book _Mastering Regular Expressions_: the link 
I provided in my previous email was to a page of the 
author's that breaks it down a bit.

Here it is again:
http://public.yahoo.com/~jfriedl/regex/email-opt.pl

This is one of those problems that sounds easy on the 
surface, but the devil is in the details. Something 
as simple as

[^@\s]+@[\w\.]+

is probably your best bet. For real power, grab a module. 
 (It's tempting to keep "fixing" the regular expression 
above, but once you start down that road, you won't 
escape for literally hundreds of characters later. :)

Greg Sabino Mullane
greg at turnstep.com
PGP Key: 0x14964AC8 200104231940


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