From 4e27f26863a237f0ddba4ee328d72f2d7e2408cc Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Mon, 12 Apr 2010 16:03:41 +0200
Subject: [PATCH] Now all the commands returning a multi bulk reply against non
 existing keys will return an empty multi bulk, not a nil one

---
 redis.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/redis.c b/redis.c
index 6b23c7bc..04eb5246 100644
--- a/redis.c
+++ b/redis.c
@@ -4477,8 +4477,8 @@ static void lrangeCommand(redisClient *c) {
     listNode *ln;
     robj *ele;
 
-    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.nullmultibulk)) == NULL ||
-        checkType(c,o,REDIS_LIST)) return;
+    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.emptymultibulk)) == NULL
+         || checkType(c,o,REDIS_LIST)) return;
     list = o->ptr;
     llen = listLength(list);
 
@@ -4811,7 +4811,7 @@ static void sinterGenericCommand(redisClient *c, robj **setskeys, unsigned long
                     server.dirty++;
                 addReply(c,shared.czero);
             } else {
-                addReply(c,shared.nullmultibulk);
+                addReply(c,shared.emptymultibulk);
             }
             return;
         }
@@ -5706,8 +5706,8 @@ static void zrangeGenericCommand(redisClient *c, int reverse) {
         return;
     }
 
-    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.nullmultibulk)) == NULL ||
-        checkType(c,o,REDIS_ZSET)) return;
+    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.emptymultibulk)) == NULL
+         || checkType(c,o,REDIS_ZSET)) return;
     zsetobj = o->ptr;
     zsl = zsetobj->zsl;
     llen = zsl->length;
@@ -5813,7 +5813,7 @@ static void genericZrangebyscoreCommand(redisClient *c, int justcount) {
     /* Ok, lookup the key and get the range */
     o = lookupKeyRead(c->db,c->argv[1]);
     if (o == NULL) {
-        addReply(c,justcount ? shared.czero : shared.nullmultibulk);
+        addReply(c,justcount ? shared.czero : shared.emptymultibulk);
     } else {
         if (o->type != REDIS_ZSET) {
             addReply(c,shared.wrongtypeerr);
@@ -6220,7 +6220,7 @@ static void genericHgetallCommand(redisClient *c, int flags) {
     robj *o, *lenobj;
     unsigned long count = 0;
 
-    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.nullmultibulk)) == NULL
+    if ((o = lookupKeyReadOrReply(c,c->argv[1],shared.emptymultibulk)) == NULL
         || checkType(c,o,REDIS_HASH)) return;
 
     lenobj = createObject(REDIS_STRING,NULL);
@@ -6460,7 +6460,7 @@ static void sortCommand(redisClient *c) {
     /* Lookup the key to sort. It must be of the right types */
     sortval = lookupKeyRead(c->db,c->argv[1]);
     if (sortval == NULL) {
-        addReply(c,shared.nullmultibulk);
+        addReply(c,shared.emptymultibulk);
         return;
     }
     if (sortval->type != REDIS_SET && sortval->type != REDIS_LIST &&
-- 
2.45.2