此函数添加到函数中。php正是这样做的：

// Enables Editor in Media edit screen.
function add_editor_support_for_attachments($settings) {
    if( get_post_type() == \'attachment\'){
      $quicktags_settings = array( \'buttons\' => \'strong,em,link,block,del,ins,ul,ol,li,code,close\' );
      $settings = array(
        \'wpautop\'       => true,
        \'textarea_name\' => \'content\',
        \'textarea_rows\' => 10,
        \'media_buttons\' => false,
        \'tinymce\' => true,
        \'quicktags\' => $quicktags_settings,
      );
      return $settings;
   }
}
add_filter( \'wp_editor_settings\', \'add_editor_support_for_attachments\' );