From c0a47ea63cde5736412c46e289a692f8ced3bc4c Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 20 Jun 2013 15:34:56 +0200
Subject: [PATCH] Allow PUBSUB NUMSUB without channels.

The result is an empty list but it is handy to call it programmatically.
---
 src/pubsub.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/pubsub.c b/src/pubsub.c
index 307825679..add9a4c5f 100644
--- a/src/pubsub.c
+++ b/src/pubsub.c
@@ -336,8 +336,8 @@ void pubsubCommand(redisClient *c) {
         }
         dictReleaseIterator(di);
         setDeferredMultiBulkLength(c,replylen,mblen);
-    } else if (!strcasecmp(c->argv[1]->ptr,"numsub") && c->argc > 2) {
-        /* PUBSUB NUMSUB Channel_1 [... Channel_N] */
+    } else if (!strcasecmp(c->argv[1]->ptr,"numsub") && c->argc >= 2) {
+        /* PUBSUB NUMSUB [Channel_1 ... Channel_N] */
         int j;
 
         addReplyMultiBulkLen(c,(c->argc-2)*2);