Fix and test for [GH-123]

Passing an Array as as the last argument should expand as users
expect.  The old behavior was to coerce the arguments into Strings,
which did surprising things with Arrays.

index.js

@@ -457,6 +457,7 @@ RedisClient.prototype.return_reply = function (reply) {
     } else if (this.monitoring) {
         len = reply.indexOf(" ");
         timestamp = reply.slice(0, len);
+        // TODO - this de-quoting doesn't work correctly if you put JSON strings in your values.
         args = reply.slice(len + 1).match(/"[^"]+"/g).map(function (elem) {
             return elem.replace(/"/g, "");
         });
@@ -508,6 +509,15 @@ RedisClient.prototype.send_command = function (command, args, callback) {
         return;
     }
 
+    // if the last argument is an array, expand it out.  This allows commands like this:
+    //     client.command(arg1, [arg2, arg3, arg4], cb);
+    //  and converts to:
+    //     client.command(arg1, arg2, arg3, arg4, cb);
+    // which is convenient for some things like sadd
+    if (Array.isArray(args[args.length - 1])) {
+        args = args.slice(0, -1).concat(args[args.length - 1]);
+    }
+
     command_obj = new Command(command, args, false, callback);
 
     if ((!this.ready && !this.send_anyway) || !stream.writable) {

package.json

@@ -1,5 +1,5 @@
 {   "name" : "redis",
-    "version" : "0.6.5",
+    "version" : "0.6.7",
     "description" : "Redis client library",
     "author": "Matt Ranney <mjr@ranney.com>",
     "contributors": [

test.js

@@ -389,7 +389,7 @@ tests.HMSET_BUFFER_AND_ARRAY = function () {
         field1 = "buffer",
         value1 = new Buffer("abcdefghij"),
         field2 = "array",
-        value2 = [],
+        value2 = ["array contents"],
         name = "HSET";
 
     client.HMSET(key, field1, value1, field2, value2, last(name, require_string("OK", name)));
@@ -695,6 +695,20 @@ tests.SADD = function () {
     client.sadd('set0', 'member0', last(name, require_number(0, name)));
 };
 
+tests.SADD2 = function () {
+    var name = "SADD2";
+    
+    client.del("set0");
+    client.sadd("set0", ["member0", "member1", "member2"], require_number(3, name));
+    client.smembers("set0", function (err, res) {
+        assert.strictEqual(res.length, 3);
+        assert.strictEqual(res[0], "member0");
+        assert.strictEqual(res[1], "member1");
+        assert.strictEqual(res[2], "member2");
+        next(name);
+    });
+};
+
 tests.SISMEMBER = function () {
     var name = "SISMEMBER";