Title: insomniax's Replies | WordPress.org

---

# insomniax

  [  ](https://wordpress.org/support/users/insomniax/)

 *   [Profile](https://wordpress.org/support/users/insomniax/)
 *   [Topics Started](https://wordpress.org/support/users/insomniax/topics/)
 *   [Replies Created](https://wordpress.org/support/users/insomniax/replies/)
 *   [Reviews Written](https://wordpress.org/support/users/insomniax/reviews/)
 *   [Topics Replied To](https://wordpress.org/support/users/insomniax/replied-to/)
 *   [Engagements](https://wordpress.org/support/users/insomniax/engagements/)
 *   [Favorites](https://wordpress.org/support/users/insomniax/favorites/)

 Search replies:

## Forum Replies Created

Viewing 1 replies (of 1 total)

 *   Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
   
   In reply to: [WordPress Feed Issue – ‘Use of unknown namespace: com-wordpress:feed-additions:1](https://wordpress.org/support/topic/wordpress-feed-issue-use-of-unknown-namespace-com-wordpressfeed-additions1/)
 *  [insomniax](https://wordpress.org/support/users/insomniax/)
 * (@insomniax)
 * [9 years, 5 months ago](https://wordpress.org/support/topic/wordpress-feed-issue-use-of-unknown-namespace-com-wordpressfeed-additions1/#post-8820704)
 * It’s probably JetPack. See jetpack/modules/enhanced-distribution.php
 *     ```
       add_action( 'rss_head',  'jetpack_enhanced_distribution_feed_id' );
       add_action( 'rss_item',  'jetpack_enhanced_distribution_post_id' );
       add_action( 'rss2_head', 'jetpack_enhanced_distribution_feed_id' );
       add_action( 'rss2_item', 'jetpack_enhanced_distribution_post_id' );
   
       function jetpack_enhanced_distribution_feed_id(){
       	(int) $id = Jetpack_Options::get_option( 'id' );
       	if ( $id > 0 ) {
       		$output = sprintf( '<site xmlns="com-wordpress:feed-additions:1">%d</site>', $id );
       		echo $output;
       	}
       }
   
       function jetpack_enhanced_distribution_post_id(){
       	$id = get_the_ID();
       	if ( $id ) {
       		$output = sprintf( '<post-id xmlns="com-wordpress:feed-additions:1">%d</post-id>', $id );
       		echo $output;
       	}
       }
       ```
   

Viewing 1 replies (of 1 total)