Allow symmetric encryption with gpgme_op_encrypt_sign.
* src/encrypt-sign.c (encrypt_sym_status_handler): New. (encrypt_sign_start): Handle recp == NULL case. * src/engine-gpg.c (gpg_encrypt_sign): Implement symmetric encryption. * tests/gpg/t-encrypt-sign.c (main): Add a test case for this.
- Co-authored-by: Kyle L. Huff <g10bts@curetheitch.com>
- GnuPG-bug-id: T1440