Ok. Here's the procmail rule what I tried:
:0
* ? ( formail -zxSubject: | egrep -i -f $MAILDIR/EGREP )
HIT
These are the contents of $MAILDIR/EGREP:
credit.*(card|free)
free.*(pron)
These are the message subjects:
credit card
Get A Free Credit Card
Where are my stolen credit card's?
credit to those who deserve credit
Credita fornaccio matriculata
cardiology frequent flyer credits for hospitalization on welfare chipcard
Cre d it\nca rd scredit\ncard
it's prone to errors
free pron
Card Credits Here!
Credit on demand for free!
Free bird feeders
Freeware now!
This passed tru:
Subject: credit to those who deserve credit
Subject: Credita fornaccio matriculata
Subject: it's prone to errors
Subject: credit to those who deserve credit
Subject: Freeware now!
Subject: Free bird feeders
Subject: Card Credits Here!
This hits:
Subject: Get A Free Credit Card
Subject: Where are my stolen credit card's?
Subject: credit card
Subject: Credit on demand for free!
Subject: Cre d itnca rd screditncard
Subject: cardiology frequent flyer credits for hospitalization on welfare chip
Subject: free pron
Hmm, maybe I should just redirect to the
Procmail tips pointer...