block_core_comment_template_render_comments( WP_Comment[] $comments, WP_Block $block ): string

19function block_core_comment_template_render_comments( $comments, $block ) {20	global $comment_depth;21	$thread_comments       = get_option( 'thread_comments' );22	$thread_comments_depth = get_option( 'thread_comments_depth' );23 24	if ( empty( $comment_depth ) ) {25		$comment_depth = 1;26	}27 28	$content = '';29	foreach ( $comments as $comment ) {30		$comment_id           = $comment->comment_ID;31		$filter_block_context = static function ( $context ) use ( $comment_id ) {32			$context['commentId'] = $comment_id;33			return $context;34		};35 36		/*37		 * We set commentId context through the `render_block_context` filter so38		 * that dynamically inserted blocks (at `render_block` filter stage)39		 * will also receive that context.40		 *41		 * Use an early priority to so that other 'render_block_context' filters42		 * have access to the values.43		 */44		add_filter( 'render_block_context', $filter_block_context, 1 );45 46		/*47		 * We construct a new WP_Block instance from the parsed block so that48		 * it'll receive any changes made by the `render_block_data` filter.49		 */50		$block_content = ( new WP_Block( $block->parsed_block ) )->render( array( 'dynamic' => false ) );51 52		remove_filter( 'render_block_context', $filter_block_context, 1 );53 54		$children = $comment->get_children();55 56		/*57		 * We need to create the CSS classes BEFORE recursing into the children.58		 * This is because comment_class() uses globals like `$comment_alt`59		 * and `$comment_thread_alt` which are order-sensitive.60		 *61		 * The `false` parameter at the end means that we do NOT want the function62		 * to `echo` the output but to return a string.63		 * See https://developer.wordpress.org/reference/functions/comment_class/#parameters.64		 */65		$comment_classes = comment_class( '', $comment->comment_ID, $comment->comment_post_ID, false );66 67		// If the comment has children, recurse to create the HTML for the nested68		// comments.69		if ( ! empty( $children ) && ! empty( $thread_comments ) ) {70			if ( $comment_depth < $thread_comments_depth ) {71				++$comment_depth;72				$inner_content  = block_core_comment_template_render_comments(73					$children,74					$block75				);76				$block_content .= sprintf( '<ol>%1$s</ol>', $inner_content );77				--$comment_depth;78			} else {79				$block_content .= block_core_comment_template_render_comments(80					$children,81					$block82				);83			}84		}85 86		$content .= sprintf( '<li id="comment-%1$s" %2$s>%3$s</li>', $comment->comment_ID, $comment_classes, $block_content );87	}88 89	return $content;90}