ftmod_libpri: Improve "ftdm libpri debug" usage information.

"all" and "none" can only be used alone,
other flags are additive.

Signed-off-by: Stefan Knoblich <s.knoblich@axsentis.de>

diff --git a/libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.c b/libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.c
index 114e656cb6d6996d0e4bcc0721d632ea31411f7e..51f7164e0eff43329c04294b2cc95688f2dfa7bb 100644 (file)
--- a/libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.c
+++ b/libs/freetdm/src/ftmod/ftmod_libpri/ftmod_libpri.c
@@ -203,7 +203,7 @@ static ftdm_io_interface_t ftdm_libpri_interface;
 static const char *ftdm_libpri_usage =
        "Usage:\n"
        "libpri kill <span>\n"
-       "libpri debug <span> <flag>\n"
+       "libpri debug <span> <all|none|flag,...flagN>\n"
        "\n"
        "Possible debug flags:\n"
        "\tq921_raw     - Q.921 Raw messages\n"