diff -r c7c34916027a -r 177826044cd9 wp/wp-includes/blocks/latest-posts.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/latest-posts.php	Mon Oct 14 18:28:13 2019 +0200
@@ -0,0 +1,131 @@
+<?php
+/**
+ * Server-side rendering of the `core/latest-posts` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/latest-posts` block on server.
+ *
+ * @param array $attributes The block attributes.
+ *
+ * @return string Returns the post content with latest posts added.
+ */
+function render_block_core_latest_posts( $attributes ) {
+	$args = array(
+		'posts_per_page'   => $attributes['postsToShow'],
+		'post_status'      => 'publish',
+		'order'            => $attributes['order'],
+		'orderby'          => $attributes['orderBy'],
+		'suppress_filters' => false,
+	);
+
+	if ( isset( $attributes['categories'] ) ) {
+		$args['category'] = $attributes['categories'];
+	}
+
+	$recent_posts = get_posts( $args );
+
+	$list_items_markup = '';
+
+	foreach ( $recent_posts as $post ) {
+		$title = get_the_title( $post );
+		if ( ! $title ) {
+			$title = __( '(Untitled)' );
+		}
+		$list_items_markup .= sprintf(
+			'<li><a href="%1$s">%2$s</a>',
+			esc_url( get_permalink( $post ) ),
+			$title
+		);
+
+		if ( isset( $attributes['displayPostDate'] ) && $attributes['displayPostDate'] ) {
+			$list_items_markup .= sprintf(
+				'<time datetime="%1$s" class="wp-block-latest-posts__post-date">%2$s</time>',
+				esc_attr( get_the_date( 'c', $post ) ),
+				esc_html( get_the_date( '', $post ) )
+			);
+		}
+
+		$list_items_markup .= "</li>\n";
+	}
+
+	$class = 'wp-block-latest-posts';
+	if ( isset( $attributes['align'] ) ) {
+		$class .= ' align' . $attributes['align'];
+	}
+
+	if ( isset( $attributes['postLayout'] ) && 'grid' === $attributes['postLayout'] ) {
+		$class .= ' is-grid';
+	}
+
+	if ( isset( $attributes['columns'] ) && 'grid' === $attributes['postLayout'] ) {
+		$class .= ' columns-' . $attributes['columns'];
+	}
+
+	if ( isset( $attributes['displayPostDate'] ) && $attributes['displayPostDate'] ) {
+		$class .= ' has-dates';
+	}
+
+	if ( isset( $attributes['className'] ) ) {
+		$class .= ' ' . $attributes['className'];
+	}
+
+	$block_content = sprintf(
+		'<ul class="%1$s">%2$s</ul>',
+		esc_attr( $class ),
+		$list_items_markup
+	);
+
+	return $block_content;
+}
+
+/**
+ * Registers the `core/latest-posts` block on server.
+ */
+function register_block_core_latest_posts() {
+	register_block_type(
+		'core/latest-posts',
+		array(
+			'attributes'      => array(
+				'categories'      => array(
+					'type' => 'string',
+				),
+				'className'       => array(
+					'type' => 'string',
+				),
+				'postsToShow'     => array(
+					'type'    => 'number',
+					'default' => 5,
+				),
+				'displayPostDate' => array(
+					'type'    => 'boolean',
+					'default' => false,
+				),
+				'postLayout'      => array(
+					'type'    => 'string',
+					'default' => 'list',
+				),
+				'columns'         => array(
+					'type'    => 'number',
+					'default' => 3,
+				),
+				'align'           => array(
+					'type' => 'string',
+				),
+				'order'           => array(
+					'type'    => 'string',
+					'default' => 'desc',
+				),
+				'orderBy'         => array(
+					'type'    => 'string',
+					'default' => 'date',
+				),
+			),
+			'render_callback' => 'render_block_core_latest_posts',
+		)
+	);
+}
+
+add_action( 'init', 'register_block_core_latest_posts' );