, zrangebylex : function ( key, min, max, limit, cback ) {
            var list = [ min, max ];
            if ( key === undefined ) return error( 'ZRANGEBYLEX', arguments );
            if ( isArray( limit ) ) list.concat( 'LIMIT' ).concat( limit );
            return encode( 'ZRANGEBYLEX', key, list, null, cback );