Ticket #31186: 31186.patch

src/wp-includes/author-template.php

@@ -72 +72 @@
  *
  * @return string The author's display name.
  */
-function get_the_modified_author() {
+function get_the_modified_author($field = 'display_name') {
         if ( $last_id = get_post_meta( get_post()->ID, '_edit_last', true) ) {
                 $last_user = get_userdata($last_id);
 
@@ -83 +83 @@
                  *
                  * @param string $last_user->display_name The author's display name.
                  */
-                return apply_filters('the_modified_author', $last_user->display_name);
+                return apply_filters('the_modified_author', $last_user->$field);
         }
 }