/*
* If no arg given, see if default can help out
* unless the user explicitly specified a blank string.
*/
if (a_gid == NULL && cnf->default_group && *cnf->default_group)
if (a_gid != NULL && !*a_gid->val)
a_gid = NULL;
else if (a_gid == NULL && cnf->default_group && *cnf->default_group)
a_gid = addarg(args, 'g', cnf->default_group);