Function strset_add

strmap.c:164–179

}

int strset_add(struct strset *set, const char *str)
{
	/*
	 * Cannot use strmap_put() because it'll return NULL in both cases:
	 *   - cannot find str: NULL means "not found"
	 *   - does find str: NULL is the value associated with str
	 */
	struct strmap_entry *entry = find_strmap_entry(&set->map, str);

	if (entry)
		return 0;

	entry = create_entry(&set->map, str, NULL);
	hashmap_add(&set->map.map, &entry->ent);
	return 1;
}