fix: add missing commands to prefix

Add missing DEL, RPUSH, RPOP and SREM commands to the list of commands to prefix.

Also, this commit refactors the prefixing logic a bit to make it simpler.

kombu/transport/redis.py

@@ -197,7 +197,10 @@ class GlobalKeyPrefixMixin:
         "LLEN",
         "LPUSH",
         "PUBLISH",
+        "RPUSH",
+        "RPOP",
         "SADD",
+        "SREM",
         "SET",
         "SMEMBERS",
         "ZADD",
@@ -206,6 +209,7 @@ class GlobalKeyPrefixMixin:
     ]
 
     PREFIXED_COMPLEX_COMMANDS = {
+        "DEL": {"args_start": 0, "args_end": None},
         "BRPOP": {"args_start": 0, "args_end": -1},
         "EVALSHA": {"args_start": 2, "args_end": 3},
     }
@@ -222,13 +226,10 @@ def _prefix_args(self, args):
             args_end = self.PREFIXED_COMPLEX_COMMANDS[command]["args_end"]
 
             pre_args = args[:args_start] if args_start > 0 else []
+            post_args = []
 
             if args_end is not None:
                 post_args = args[args_end:]
-            elif args_end < 0:
-                post_args = args[len(args):]
-            else:
-                post_args = []
 
             args = pre_args + [
                 self.global_keyprefix + str(arg)

t/unit/transport/test_redis.py

@@ -1561,6 +1561,21 @@ def test_prefix_simple_args(self):
                 f"{self.global_keyprefix}fake_key"
             ]
 
+    def test_prefix_delete_args(self):
+        prefixed_args = self.mixin._prefix_args([
+            "DEL",
+            "fake_key",
+            "fake_key2",
+            "fake_key3"
+        ])
+
+        assert prefixed_args == [
+            "DEL",
+            f"{self.global_keyprefix}fake_key",
+            f"{self.global_keyprefix}fake_key2",
+            f"{self.global_keyprefix}fake_key3",
+        ]
+
     def test_prefix_brpop_args(self):
         prefixed_args = self.mixin._prefix_args([
             "BRPOP",