1 files changed, 52 insertions, 0 deletions
diff --git a/wp-includes/blocks/comments-pagination-previous.php b/wp-includes/blocks/comments-pagination-previous.php
new file mode 100644
index 0000000..f194e8a
--- /dev/null
+++ b/wp-includes/blocks/comments-pagination-previous.php
@@ -0,0 +1,52 @@
+<?php
+/**
+ * Server-side rendering of the `core/comments-pagination-previous` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/comments-pagination-previous` 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 previous posts link for the comments pagination.
+ */
+function render_block_core_comments_pagination_previous( $attributes, $content, $block ) {
+	$default_label    = __( 'Older Comments' );
+	$label            = isset( $attributes['label'] ) && ! empty( $attributes['label'] ) ? $attributes['label'] : $default_label;
+	$pagination_arrow = get_comments_pagination_arrow( $block, 'previous' );
+	if ( $pagination_arrow ) {
+		$label = $pagination_arrow . $label;
+	}
+
+	$filter_link_attributes = static function () {
+		return get_block_wrapper_attributes();
+	};
+	add_filter( 'previous_comments_link_attributes', $filter_link_attributes );
+
+	$previous_comments_link = get_previous_comments_link( $label );
+
+	remove_filter( 'previous_comments_link_attributes', $filter_link_attributes );
+
+	if ( ! isset( $previous_comments_link ) ) {
+		return '';
+	}
+
+	return $previous_comments_link;
+}
+
+/**
+ * Registers the `core/comments-pagination-previous` block on the server.
+ */
+function register_block_core_comments_pagination_previous() {
+	register_block_type_from_metadata(
+		__DIR__ . '/comments-pagination-previous',
+		array(
+			'render_callback' => 'render_block_core_comments_pagination_previous',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_comments_pagination_previous' );