Dovecot/Sieve shortcuts?

Hi,

Is there a clean way to match on an email address the way procmail ^TO_ did? that was a macro which expanded to (^((Original-)?(Resent-)?(To|Cc|Bcc)|(X-Envelope |Apparently(-Resent)?)-To):(.*[^-a-zA-Z0-9_.])?)

so you could write

• ^TO_dovecot dovecot

and grab messages to the list. In sieve, I find myseld writing ["To","cc"] and wonder if there's a better way.

Adam