diff -r 34716fd837a4 -r be944660c56a wp/wp-includes/blocks/post-title.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/post-title.php	Wed Sep 21 18:19:35 2022 +0200
@@ -0,0 +1,55 @@
+<?php
+/**
+ * Server-side rendering of the `core/post-title` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/post-title` block on the server.
+ *
+ * @param array    $attributes Block attributes.
+ * @param string   $content    Block default content.
+ * @param WP_Block $block      Block instance.
+ *
+ * @return string Returns the filtered post title for the current post wrapped inside "h1" tags.
+ */
+function render_block_core_post_title( $attributes, $content, $block ) {
+	if ( ! isset( $block->context['postId'] ) ) {
+		return '';
+	}
+
+	$post_ID          = $block->context['postId'];
+	$tag_name         = 'h2';
+	$align_class_name = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
+
+	if ( isset( $attributes['level'] ) ) {
+		$tag_name = 0 === $attributes['level'] ? 'p' : 'h' . $attributes['level'];
+	}
+
+	$title = get_the_title( $post_ID );
+	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {
+		$title = sprintf( '<a href="%1s" target="%2s" rel="%3s">%4s</a>', get_the_permalink( $post_ID ), $attributes['linkTarget'], $attributes['rel'], $title );
+	}
+	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
+
+	return sprintf(
+		'<%1$s %2$s>%3$s</%1$s>',
+		$tag_name,
+		$wrapper_attributes,
+		$title
+	);
+}
+
+/**
+ * Registers the `core/post-title` block on the server.
+ */
+function register_block_core_post_title() {
+	register_block_type_from_metadata(
+		__DIR__ . '/post-title',
+		array(
+			'render_callback' => 'render_block_core_post_title',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_post_title' );