hash_search
hte_t *hash_search(hte_t **, const char *, bool);
#define htab_search(a, b) hash_search(NULL, (a), (b))
hte = hash_search(renametab, name, false);
renamehte = hash_search(renametab, tname, true);
hte = hash_search(renametab, name, false);
hte = hash_search(renametab, name, false);