Merge remote branch 'tj/bugs/empty-keys'

index.js

@@ -118,6 +118,9 @@ RedisReplyParser.prototype.execute = function (incoming_buf) {
                 this.multi_bulk_length = parseInt(small_toString(this.tmp_buffer), 10);
                 this.multi_bulk_replies = [];
                 this.state = "type";
+                if (0 == this.multi_bulk_length) {
+                    this.send_reply([]);
+                }
             } else {
                 this.emit("error", new Error("didn't see LF after NL reading multi bulk count"));
                 this.state = "type"; // try to start over with next data chunk

test.js

@@ -209,6 +209,15 @@ tests.KEYS = function () {
     });
 };
 
+tests.MULTIBULK_ZERO_LENGTH = function () {
+    var name = "MULTIBULK_ZERO_LENGTH";
+    client.KEYS(['users:*'], function(err, results){
+        assert.strictEqual(null, err, 'error on empty multibulk reply');
+        assert.strictEqual(0, results.length);
+        next(name);
+    });
+};
+
 tests.RANDOMKEY = function () {
     var name = "RANDOMKEY";
     client.mset(["test keys 1", "test val 1", "test keys 2", "test val 2"], require_string("OK", name));