From ad297a1a6782905394cb56b00ed6dbd08707fb04 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Tue, 29 Jan 2013 13:50:01 +0100
Subject: [PATCH] Z*STORE event fixed: generate del only if resulting sorted
 set is empty.

---
 src/t_zset.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/t_zset.c b/src/t_zset.c
index b458f88a1..8ef9c5376 100644
--- a/src/t_zset.c
+++ b/src/t_zset.c
@@ -1680,7 +1680,6 @@ void zunionInterGenericCommand(redisClient *c, robj *dstkey, int op) {
 
     if (dbDelete(c->db,dstkey)) {
         signalModifiedKey(c->db,dstkey);
-        notifyKeyspaceEvent(REDIS_NOTIFY_GENERIC,"del",dstkey,c->db->id);
         touched = 1;
         server.dirty++;
     }
@@ -1700,6 +1699,8 @@ void zunionInterGenericCommand(redisClient *c, robj *dstkey, int op) {
     } else {
         decrRefCount(dstobj);
         addReply(c,shared.czero);
+        if (touched)
+            notifyKeyspaceEvent(REDIS_NOTIFY_GENERIC,"del",dstkey,c->db->id);
     }
     zfree(src);
 }