* scd/app-nks.c (set_usage_string): New.
(do_learn_status_core, do_readkey): Use set_usage_string.
(do_with_keygrip): Add USAGE to call send_keyinfo,
using set_usage_string.
* scd/command.c (send_keyinfo): Add arg usage.
--
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
Backported-from-master: 5264d3f58e8a8362900c3518bdd683ff9a23cccc
GnuPG-bug-id: 6252
This backports only the NKS parts of the original patch
Signed-off-by: Werner Koch <wk@gnupg.org>