+int mutt_is_message_type(BODY *);
+int mutt_is_multipart_encrypted(BODY *);
+int mutt_is_multipart_signed(BODY *);
+int mutt_is_application_pgp(BODY *);
+int mutt_is_application_smime(BODY *);
+int mutt_is_text_part(BODY *);
+time_t mutt_parse_date(const char *, HEADER *);
+