modify error msg

server/http/base.go

@@ -8,13 +8,13 @@ import (
 )
 
 const (
-	ERR_ARGUMENT_FORMAT = "ERR wrong number of arguments for '%s' command"
+	ERR_ARGUMENT_FORMAT = "wrong number of arguments for '%s' command"
 	MSG_OK              = "OK"
 )
 
 var (
-	ErrValue  = errors.New("ERR value is not an integer or out of range")
-	ErrSyntax = errors.New("ERR syntax error")
+	ErrValue  = errors.New("value is not an integer or out of range")
+	ErrSyntax = errors.New("syntax error")
 )
 
 type commondFunc func(*ledis.DB, ...string) (interface{}, error)

server/http/cmd_zset.go

@@ -288,8 +288,15 @@ func zrangeGeneric(db *ledis.DB, reverse bool, args ...string) (interface{}, err
 	args = args[3:]
 	var withScores bool = false
 
-	if len(args) > 0 && strings.ToLower(args[0]) == "withscores" {
-		withScores = true
+	if len(args) > 0 {
+		if len(args) != 1 {
+			return nil, ErrSyntax
+		}
+		if strings.ToLower(args[0]) == "withscores" {
+			withScores = true
+		} else {
+			return nil, ErrSyntax
+		}
 	}
 
 	if datas, err := db.ZRangeGeneric(key, start, stop, reverse); err != nil {