Table of Contents Add IDs to all heading levels (#695)

Author: t-hamano

mu-plugins/blocks/table-of-contents/index.php

@@ -71,6 +71,10 @@ function render( $attributes, $content, $block ) {
 	$last_item = false;
 
 	foreach ( $items as $item ) {
+		if ( $item['level'] > 3 ) {
+			continue;
+		}
+
 		if ( $last_item ) {
 			if ( $last_item < $item['level'] ) {
 				$content .= "\n<ul>\n";
@@ -113,7 +117,7 @@ function( $content ) use ( $items ) {
  * @return array A list of heading objects.
  */
 function get_headings( $content ) {
-	$tag = 'h(?P<level>[1-3])';
+	$tag = 'h(?P<level>[1-6])';
 	preg_match_all( "/(?P<tag><{$tag}(?P<attrs>[^>]*)>)(?P<title>.*?)(<\/{$tag}>)/iJ", $content, $matches, PREG_SET_ORDER );
 
 	foreach ( $matches as $i => $item ) {