Ticket #17025: 17025.11.diff

src/wp-includes/author-template.php

@@ -476 +476 @@
                 }
 
                 if ( $args['show_fullname'] && $author->first_name && $author->last_name ) {
-                        $name = "$author->first_name $author->last_name";
+
+                        $full_name = $author->first_name . ' ' . $author->last_name;
+
+                        /**
+                        * Filters the author's full name.
+                        *
+                        * @since 6.1.0
+                        *
+                        * @param string $full_name Full Name of the author. Default: The author's first name and last name.
+                        * @param object $author    Author data in object format.
+                        */
+
+                        $name = apply_filters( 'wp_list_author_full_name', $full_name, $author );
                 } else {
                         $name = $author->display_name;
                 }