JezK

Edit File: feed-atom.php

<?php /** * Atom Feed Template for displaying Atom Posts feed. * * @package WordPress */ // Don't load directly. if ( ! defined( 'ABSPATH' ) ) { exit; } header( 'Content-Type: ' . feed_content_type( 'atom' ) . '; charset=' . get_option( 'blog_charset' ), true ); $more = 1; echo '<?xml version="1.0" encoding="' . get_option( 'blog_charset' ) . '"?' . '>'; /** This action is documented in wp-includes/feed-rss2.php */ do_action( 'rss_tag_pre', 'atom' ); ?> <feed xmlns="http://www.w3.org/2005/Atom" xmlns:thr="http://purl.org/syndication/thread/1.0" xml:lang="<?php bloginfo_rss( 'language' ); ?>" <?php /** * Fires at end of the Atom feed root to add namespaces. * * @since 2.0.0 */ do_action( 'atom_ns' ); ?> > <title type="text"><?php wp_title_rss(); ?></title> <subtitle type="text"><?php bloginfo_rss( 'description' ); ?></subtitle> <updated><?php echo get_feed_build_date( 'Y-m-d\TH:i:s\Z' ); ?></updated> <link rel="alternate" type="<?php bloginfo_rss( 'html_type' ); ?>" href="<?php bloginfo_rss( 'url' ); ?>" /> <id><?php bloginfo( 'atom_url' ); ?></id> <link rel="self" type="application/atom+xml" href="<?php self_link(); ?>" /> <?php /** * Fires just before the first Atom feed entry. * * @since 2.0.0 */ do_action( 'atom_head' ); while ( have_posts() ) : the_post(); ?> <entry> <author> <name><?php the_author(); ?></name> <?php $author_url = get_the_author_meta( 'url' ); if ( ! empty( $author_url ) ) : ?> <uri><?php the_author_meta( 'url' ); ?></uri> <?php endif; /** * Fires at the end of each Atom feed author entry. * * @since 3.2.0 */ do_action( 'atom_author' ); ?> </author> <title type="<?php html_type_rss(); ?>"><![CDATA[<?php the_title_rss(); ?>]]></title> <link rel="alternate" type="<?php bloginfo_rss( 'html_type' ); ?>" href="<?php the_permalink_rss(); ?>" /> <id><?php the_guid(); ?></id> <updated><?php echo get_post_modified_time( 'Y-m-d\TH:i:s\Z', true ); ?></updated> <published><?php echo get_post_time( 'Y-m-d\TH:i:s\Z', true ); ?></published> <?php the_category_rss( 'atom' ); ?> <summary type="<?php html_type_rss(); ?>"><![CDATA[<?php the_excerpt_rss(); ?>]]></summary> <?php if ( ! get_option( 'rss_use_excerpt' ) ) : ?> <content type="<?php html_type_rss(); ?>" xml:base="<?php the_permalink_rss(); ?>"><![CDATA[<?php the_content_feed( 'atom' ); ?>]]></content> <?php endif; ?> <?php atom_enclosure(); /** * Fires at the end of each Atom feed item. * * @since 2.0.0 */ do_action( 'atom_entry' ); if ( get_comments_number() || comments_open() ) : ?> <link rel="replies" type="<?php bloginfo_rss( 'html_type' ); ?>" href="<?php the_permalink_rss(); ?>#comments" thr:count="<?php echo get_comments_number(); ?>" /> <link rel="replies" type="application/atom+xml" href="<?php echo esc_url( get_post_comments_feed_link( 0, 'atom' ) ); ?>" thr:count="<?php echo get_comments_number(); ?>" /> <thr:total><?php echo get_comments_number(); ?></thr:total> <?php endif; ?> </entry> <?php endwhile; ?> </feed>
https://validator.w3.org/feed/docs/rss2.html