+ // Return comment threading information (http://www.ietf.org/rfc/rfc4685.txt)
+ if ( $comment->comment_parent == 0 ) : // This comment is top level ?>
+ <thr:in-reply-to ref="<?php the_guid(); ?>" href="<?php the_permalink_rss() ?>" type="<?php bloginfo_rss('html_type'); ?>" />
+<?php else : // This comment is in reply to another comment
+ $parent_comment = get_comment($comment->comment_parent);
+ // The rel attribute below and the id tag above should be GUIDs, but WP doesn't create them for comments (unlike posts). Either way, it's more important that they both use the same system
+?>
+ <thr:in-reply-to ref="<?php comment_guid($parent_comment) ?>" href="<?php echo get_comment_link($parent_comment) ?>" type="<?php bloginfo_rss('html_type'); ?>" />
+<?php endif;
+ /**
+ * Fires at the end of each Atom comment feed item.
+ *
+ * @since 2.2.0
+ *
+ * @param int $comment_id ID of the current comment.
+ * @param int $comment_post_id ID of the post the current comment is connected to.
+ */
+ do_action( 'comment_atom_entry', $comment->comment_ID, $comment_post->ID );