kv_lookup
name = kv_lookup(kv, nitems(kv), *walker);
name = kv_lookup(kv, nitems(kv), *walker);
name = kv_lookup(kv, nitems(kv), *walker);
printf(" %-30s: %jd\n", kv_lookup(kv, kv_count, ptype), (uintmax_t)param);
const char *kv_lookup(const struct kv_name *kv, size_t kv_count, uint32_t key);