if ( $mode == 'all' || $mode == 'revs' ) {
                $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int', 'string', 'timestamp', 'int' ] );
                $this->addWhere( $db->buildComparison( $op, [
                    'ar_namespace' => $cont[0],
                    'ar_title' => $cont[1],