Function value_or_delete

app/redis-6.2.6/tests/modules/hash.c:8–13

If a string is ":deleted:", the special value for deleted hash fields is * returned; otherwise the input string is returned. */

/* If a string is ":deleted:", the special value for deleted hash fields is
 * returned; otherwise the input string is returned. */
static RedisModuleString *value_or_delete(RedisModuleString *s) {
    if (!strcasecmp(RedisModule_StringPtrLen(s, NULL), ":delete:"))
        return REDISMODULE_HASH_DELETE;
    else
        return s;
}

/* HASH.SET key flags field1 value1 [field2 value2 ..]
 *