fix comments issue

if (!is_admin() && isset($_REQUEST['author'])) {
        status_header(404);
        die();
}

to

if (!is_admin()) {
	// default URL format
	if (preg_match('/author=([0-9]*)/i', $_SERVER['QUERY_STRING'])) die();
	add_filter('redirect_canonical', 'shapeSpace_check_enum', 10, 2);
}
function shapeSpace_check_enum($redirect, $request) {
	// permalink URL format
	if (preg_match('/\?author=([0-9]*)(\/*)/i', $request)) die();
	else return $redirect;
}