Ticket #43791: 43791.diff

wp-includes/default-filters.php

@@ -272 +272 @@
 add_action( 'wp_head', 'feed_links', 2 );
 add_action( 'wp_head', 'feed_links_extra', 3 );
 add_action( 'wp_head', 'rsd_link' );
+add_action( 'wp_head', 'pingback_url' );
 add_action( 'wp_head', 'wlwmanifest_link' );
 add_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0 );
 add_action( 'wp_head', 'locale_stylesheet' );

wp-includes/general-template.php

@@ -2820 +2820 @@
 }
 
 /**
+ * Display the Pingback URL.
+ *
+ * @since 4.9.6
+ */
+function pingback_url() {
+    if ( is_singular() && pings_open( get_queried_object() ) ) : 
+        echo '<link rel="pingback" href="' . esc_url( site_url( 'xmlrpc.php') ) . '" />' . "\n";
+    endif;
+}
+/**
  * Display the link to the Windows Live Writer manifest file.
  *
  * @link https://msdn.microsoft.com/en-us/library/bb463265.aspx