Using GnuPG 1.0.6, Mailcrypt 3.5.6.
For some reason, encryption, decryption, and signing
operations produce output like:
key 0xAB894EF0E: already in trusted key table
This is a result of code from g10/trustdb.c in
the function add_ultimate_key.
Mailcrypt appears to choke on this output. I commented
out the lines that produce this output in g10/trustdb.c
to see whether Mailcrypt would work then. Indeed it
I guess output from GnuPG needs to be parsed better ;-)