[Dovecot] dovecot1.2beta2( hg tags yields 8834:5284f45c249a) fetch error

Steps to reproduce

1 login testuser testpw 2 select inbox 3 fetch 1 body.peek[HEADER.FIELDS (date)]

I get the error 3 BAD Error in IMAP command FETCH: Unknown FETCH modifier

This is AIX 5.3 with mbox files.

-Jonathan