Regular Expressions resource ?

   I know that O'Reilly books are generally excellent (I have enough of
them), but can someone pass along how good the  "Mastering Regular
Expressions" is?

Ralph Lindberg N7BSN       <n7bsn(_at_)callsign(_dot_)net>
RV and Camping FAQ <http://kendaco.telebyte.net/rlindber/rv/>
Just because MS-Windows holds 90% of the market doesn't mean it's 
superior. Remember 90% of all animal's are insects.