diff -r 34716fd837a4 -r be944660c56a wp/wp-includes/blocks/page-list.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/blocks/page-list.php	Wed Sep 21 18:19:35 2022 +0200
@@ -0,0 +1,227 @@
+<?php
+/**
+ * Server-side rendering of the `core/pages` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Build an array with CSS classes and inline styles defining the colors
+ * which will be applied to the pages markup in the front-end when it is a descendant of navigation.
+ *
+ * @param  array $context Navigation block context.
+ * @return array Colors CSS classes and inline styles.
+ */
+function block_core_page_list_build_css_colors( $context ) {
+	$colors = array(
+		'css_classes'   => array(),
+		'inline_styles' => '',
+	);
+
+	// Text color.
+	$has_named_text_color  = array_key_exists( 'textColor', $context );
+	$has_custom_text_color = isset( $context['style']['color']['text'] );
+
+	// If has text color.
+	if ( $has_custom_text_color || $has_named_text_color ) {
+		// Add has-text-color class.
+		$colors['css_classes'][] = 'has-text-color';
+	}
+
+	if ( $has_named_text_color ) {
+		// Add the color class.
+		$colors['css_classes'][] = sprintf( 'has-%s-color', $context['textColor'] );
+	} elseif ( $has_custom_text_color ) {
+		// Add the custom color inline style.
+		$colors['inline_styles'] .= sprintf( 'color: %s;', $context['style']['color']['text'] );
+	}
+
+	// Background color.
+	$has_named_background_color  = array_key_exists( 'backgroundColor', $context );
+	$has_custom_background_color = isset( $context['style']['color']['background'] );
+
+	// If has background color.
+	if ( $has_custom_background_color || $has_named_background_color ) {
+		// Add has-background class.
+		$colors['css_classes'][] = 'has-background';
+	}
+
+	if ( $has_named_background_color ) {
+		// Add the background-color class.
+		$colors['css_classes'][] = sprintf( 'has-%s-background-color', $context['backgroundColor'] );
+	} elseif ( $has_custom_background_color ) {
+		// Add the custom background-color inline style.
+		$colors['inline_styles'] .= sprintf( 'background-color: %s;', $context['style']['color']['background'] );
+	}
+
+	return $colors;
+}
+
+/**
+ * Build an array with CSS classes and inline styles defining the font sizes
+ * which will be applied to the pages markup in the front-end when it is a descendant of navigation.
+ *
+ * @param  array $context Navigation block context.
+ * @return array Font size CSS classes and inline styles.
+ */
+function block_core_page_list_build_css_font_sizes( $context ) {
+	// CSS classes.
+	$font_sizes = array(
+		'css_classes'   => array(),
+		'inline_styles' => '',
+	);
+
+	$has_named_font_size  = array_key_exists( 'fontSize', $context );
+	$has_custom_font_size = isset( $context['style']['typography']['fontSize'] );
+
+	if ( $has_named_font_size ) {
+		// Add the font size class.
+		$font_sizes['css_classes'][] = sprintf( 'has-%s-font-size', $context['fontSize'] );
+	} elseif ( $has_custom_font_size ) {
+		// Add the custom font size inline style.
+		$font_sizes['inline_styles'] = sprintf( 'font-size: %spx;', $context['style']['typography']['fontSize'] );
+	}
+
+	return $font_sizes;
+}
+
+/**
+ * Outputs Page list markup from an array of pages with nested children.
+ *
+ * @param array $nested_pages The array of nested pages.
+ *
+ * @return string List markup.
+ */
+function block_core_page_list_render_nested_page_list( $nested_pages ) {
+	if ( empty( $nested_pages ) ) {
+		return;
+	}
+	$markup = '';
+	foreach ( (array) $nested_pages as $page ) {
+		$css_class = 'wp-block-pages-list__item';
+		if ( isset( $page['children'] ) ) {
+			$css_class .= ' has-child';
+		}
+		$markup .= '<li class="' . $css_class . '">';
+		$markup .= '<a class="wp-block-pages-list__item__link" href="' . esc_url( $page['link'] ) . '">' . wp_kses(
+			$page['title'],
+			wp_kses_allowed_html( 'post' )
+		) . '</a>';
+		if ( isset( $page['children'] ) ) {
+			$markup .= '<span class="wp-block-page-list__submenu-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" role="img" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg></span>';
+			$markup .= '<ul class="submenu-container">' . block_core_page_list_render_nested_page_list( $page['children'] ) . '</ul>';
+		}
+		$markup .= '</li>';
+	}
+	return $markup;
+}
+
+/**
+ * Outputs nested array of pages
+ *
+ * @param array $current_level The level being iterated through.
+ * @param array $children The children grouped by parent post ID.
+ *
+ * @return array The nested array of pages.
+ */
+function block_core_page_list_nest_pages( $current_level, $children ) {
+	if ( empty( $current_level ) ) {
+		return;
+	}
+	foreach ( (array) $current_level as $key => $current ) {
+		if ( isset( $children[ $key ] ) ) {
+			$current_level[ $key ]['children'] = block_core_page_list_nest_pages( $children[ $key ], $children );
+		}
+	}
+	return $current_level;
+}
+
+/**
+ * Renders the `core/page-list` block on server.
+ *
+ * @param array $attributes The block attributes.
+ * @param array $content The saved content.
+ * @param array $block The parsed block.
+ *
+ * @return string Returns the page list markup.
+ */
+function render_block_core_page_list( $attributes, $content, $block ) {
+	static $block_id = 0;
+	$block_id++;
+
+	// TODO: When https://core.trac.wordpress.org/ticket/39037 REST API support for multiple orderby values is resolved,
+	// update 'sort_column' to 'menu_order, post_title'. Sorting by both menu_order and post_title ensures a stable sort.
+	// Otherwise with pages that have the same menu_order value, we can see different ordering depending on how DB
+	// queries are constructed internally. For example we might see a different order when a limit is set to <499
+	// versus >= 500.
+	$all_pages = get_pages(
+		array(
+			'sort_column' => 'menu_order',
+			'order'       => 'asc',
+		)
+	);
+
+	$top_level_pages = array();
+
+	$pages_with_children = array();
+
+	foreach ( (array) $all_pages as $page ) {
+		if ( $page->post_parent ) {
+			$pages_with_children[ $page->post_parent ][ $page->ID ] = array(
+				'title' => $page->post_title,
+				'link'  => get_permalink( $page->ID ),
+			);
+		} else {
+			$top_level_pages[ $page->ID ] = array(
+				'title' => $page->post_title,
+				'link'  => get_permalink( $page->ID ),
+			);
+
+		}
+	}
+
+	$nested_pages = block_core_page_list_nest_pages( $top_level_pages, $pages_with_children );
+
+	$wrapper_markup = '<ul %1$s>%2$s</ul>';
+
+	$items_markup = block_core_page_list_render_nested_page_list( $nested_pages );
+
+	$colors          = block_core_page_list_build_css_colors( $block->context );
+	$font_sizes      = block_core_page_list_build_css_font_sizes( $block->context );
+	$classes         = array_merge(
+		$colors['css_classes'],
+		$font_sizes['css_classes']
+	);
+	$style_attribute = ( $colors['inline_styles'] . $font_sizes['inline_styles'] );
+	$css_classes     = trim( implode( ' ', $classes ) );
+
+	if ( $block->context && $block->context['showSubmenuIcon'] ) {
+		$css_classes .= ' show-submenu-icons';
+	}
+
+	$wrapper_attributes = get_block_wrapper_attributes(
+		array(
+			'class' => $css_classes,
+			'style' => $style_attribute,
+		)
+	);
+
+	return sprintf(
+		$wrapper_markup,
+		$wrapper_attributes,
+		$items_markup
+	);
+}
+
+	/**
+	 * Registers the `core/pages` block on server.
+	 */
+function register_block_core_page_list() {
+	register_block_type_from_metadata(
+		__DIR__ . '/page-list',
+		array(
+			'render_callback' => 'render_block_core_page_list',
+		)
+	);
+}
+	add_action( 'init', 'register_block_core_page_list' );