void _opt_register(const char *longopt, char shortopt, enum opt_flags flags,
char *(*cb)(void *arg),
char *(*cb_arg)(const char *optarg, void *arg),
+ void (*show)(char buf[OPT_SHOW_LEN], const void *arg),
void *arg, const char *desc)
{
struct opt_table opt;
opt.flags = flags;
opt.cb = cb;
opt.cb_arg = cb_arg;
+ opt.show = show;
opt.arg = arg;
opt.desc = desc;
check_opt(&opt);