+ case 'html5' :
+ // You can't just pass 'html5', you need to pass an array of types.
+ if ( empty( $args[0] ) ) {
+ $args = array( 0 => array( 'comment-list', 'comment-form', 'search-form' ) );
+ } elseif ( ! is_array( $args[0] ) ) {
+ _doing_it_wrong( "add_theme_support( 'html5' )", 'You need to pass an array of types.', '3.6.1' );
+ return false;
+ }
+
+ // Calling 'html5' again merges, rather than overwrites.
+ if ( isset( $_wp_theme_features['html5'] ) )
+ $args[0] = array_merge( $_wp_theme_features['html5'][0], $args[0] );
+ break;
+