-ssize_t rfc822_write_address(char *, ssize_t, address_t *, int);
-ssize_t rfc822_write_address_single(char *, ssize_t, address_t *, int);
+ssize_t rfc822_addrcat(char *, ssize_t, address_t *, int);
+ssize_t rfc822_addrcpy(char *, ssize_t, address_t *, int);