看看这是否行得通：

首先，Ajax搜索的回调（wp_link_query 中的方法wp-includes/class-wp-editor.php) 抑制常规过滤器。对于这个特定的查询，我们必须重新打开它们。

function undo_suppress($qry) {
  global $_POST;
  if (isset($_POST[\'action\']) && \'wp-link-ajax\' == $_POST[\'action\']) {
    $qry->set(\'suppress_filters\',false);
  }
}
add_action(\'pre_get_posts\',\'undo_suppress\');

function search_future_editor_links($where) {
  global $_POST;
  if (isset($_POST[\'action\']) && \'wp-link-ajax\' == $_POST[\'action\']) {
    $where = \' AND wp_posts.post_type IN ("post","page","attachment") AND wp_posts.post_status IN ("publish","future") \';
  }
  return $where;
}
add_filter(\'posts_where\',\'search_future_editor_links\');