diff -r 34716fd837a4 -r be944660c56a wp/wp-includes/blocks/site-tagline.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/site-tagline.php	Wed Sep 21 18:19:35 2022 +0200
@@ -0,0 +1,41 @@
+<?php
+/**
+ * Server-side rendering of the `core/site-tagline` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/site-tagline` block on the server.
+ *
+ * @param array $attributes The block attributes.
+ *
+ * @return string The render.
+ */
+function render_block_core_site_tagline( $attributes ) {
+	$site_tagline = get_bloginfo( 'description' );
+	if ( ! $site_tagline ) {
+		return;
+	}
+	$align_class_name   = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
+	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
+
+	return sprintf(
+		'<p %1$s>%2$s</p>',
+		$wrapper_attributes,
+		$site_tagline
+	);
+}
+
+/**
+ * Registers the `core/site-tagline` block on the server.
+ */
+function register_block_core_site_tagline() {
+	register_block_type_from_metadata(
+		__DIR__ . '/site-tagline',
+		array(
+			'render_callback' => 'render_block_core_site_tagline',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_site_tagline' );