Ticket #38935: 38935.patch

src/wp-includes/theme.php

@@ -867 +867 @@
                  * @since 2.2.0
                  *
                  * @param string $current_mod The value of the current theme modification.
+     * @param string $name Theme modification name
                  */
-                return apply_filters( "theme_mod_{$name}", $mods[$name] );
+                return apply_filters( "theme_mod_{$name}", $mods[$name], $name );
         }
 
         if ( is_string( $default ) )
                 $default = sprintf( $default, get_template_directory_uri(), get_stylesheet_directory_uri() );
 
         /** This filter is documented in wp-includes/theme.php */
-        return apply_filters( "theme_mod_{$name}", $default );
+        return apply_filters( "theme_mod_{$name}", $default, $name );
 }
 
 /**