diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-includes/widgets/class-wp-widget-pages.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/widgets/class-wp-widget-pages.php	Mon Oct 14 17:39:30 2019 +0200
@@ -0,0 +1,150 @@
+<?php
+/**
+ * Widget API: WP_Widget_Pages class
+ *
+ * @package WordPress
+ * @subpackage Widgets
+ * @since 4.4.0
+ */
+
+/**
+ * Core class used to implement a Pages widget.
+ *
+ * @since 2.8.0
+ *
+ * @see WP_Widget
+ */
+class WP_Widget_Pages extends WP_Widget {
+
+	/**
+	 * Sets up a new Pages widget instance.
+	 *
+	 * @since 2.8.0
+	 */
+	public function __construct() {
+		$widget_ops = array(
+			'classname' => 'widget_pages',
+			'description' => __( 'A list of your site&#8217;s Pages.' ),
+			'customize_selective_refresh' => true,
+		);
+		parent::__construct( 'pages', __( 'Pages' ), $widget_ops );
+	}
+
+	/**
+	 * Outputs the content for the current Pages widget instance.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $args     Display arguments including 'before_title', 'after_title',
+	 *                        'before_widget', and 'after_widget'.
+	 * @param array $instance Settings for the current Pages widget instance.
+	 */
+	public function widget( $args, $instance ) {
+		$title = ! empty( $instance['title'] ) ? $instance['title'] : __( 'Pages' );
+
+		/**
+		 * Filters the widget title.
+		 *
+		 * @since 2.6.0
+		 *
+		 * @param string $title    The widget title. Default 'Pages'.
+		 * @param array  $instance Array of settings for the current widget.
+		 * @param mixed  $id_base  The widget ID.
+		 */
+		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
+
+		$sortby = empty( $instance['sortby'] ) ? 'menu_order' : $instance['sortby'];
+		$exclude = empty( $instance['exclude'] ) ? '' : $instance['exclude'];
+
+		if ( $sortby == 'menu_order' )
+			$sortby = 'menu_order, post_title';
+
+		/**
+		 * Filters the arguments for the Pages widget.
+		 *
+		 * @since 2.8.0
+		 * @since 4.9.0 Added the `$instance` parameter.
+		 *
+		 * @see wp_list_pages()
+		 *
+		 * @param array $args     An array of arguments to retrieve the pages list.
+		 * @param array $instance Array of settings for the current widget.
+		 */
+		$out = wp_list_pages( apply_filters( 'widget_pages_args', array(
+			'title_li'    => '',
+			'echo'        => 0,
+			'sort_column' => $sortby,
+			'exclude'     => $exclude
+		), $instance ) );
+
+		if ( ! empty( $out ) ) {
+			echo $args['before_widget'];
+			if ( $title ) {
+				echo $args['before_title'] . $title . $args['after_title'];
+			}
+		?>
+		<ul>
+			<?php echo $out; ?>
+		</ul>
+		<?php
+			echo $args['after_widget'];
+		}
+	}
+
+	/**
+	 * Handles updating settings for the current Pages widget instance.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $new_instance New settings for this instance as input by the user via
+	 *                            WP_Widget::form().
+	 * @param array $old_instance Old settings for this instance.
+	 * @return array Updated settings to save.
+	 */
+	public function update( $new_instance, $old_instance ) {
+		$instance = $old_instance;
+		$instance['title'] = sanitize_text_field( $new_instance['title'] );
+		if ( in_array( $new_instance['sortby'], array( 'post_title', 'menu_order', 'ID' ) ) ) {
+			$instance['sortby'] = $new_instance['sortby'];
+		} else {
+			$instance['sortby'] = 'menu_order';
+		}
+
+		$instance['exclude'] = sanitize_text_field( $new_instance['exclude'] );
+
+		return $instance;
+	}
+
+	/**
+	 * Outputs the settings form for the Pages widget.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $instance Current settings.
+	 */
+	public function form( $instance ) {
+		//Defaults
+		$instance = wp_parse_args( (array) $instance, array( 'sortby' => 'post_title', 'title' => '', 'exclude' => '') );
+		?>
+		<p>
+			<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php _e( 'Title:' ); ?></label>
+			<input class="widefat" id="<?php echo esc_attr( $this->get_field_id('title') ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>" />
+		</p>
+		<p>
+			<label for="<?php echo esc_attr( $this->get_field_id( 'sortby' ) ); ?>"><?php _e( 'Sort by:' ); ?></label>
+			<select name="<?php echo esc_attr( $this->get_field_name( 'sortby' ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( 'sortby' ) ); ?>" class="widefat">
+				<option value="post_title"<?php selected( $instance['sortby'], 'post_title' ); ?>><?php _e('Page title'); ?></option>
+				<option value="menu_order"<?php selected( $instance['sortby'], 'menu_order' ); ?>><?php _e('Page order'); ?></option>
+				<option value="ID"<?php selected( $instance['sortby'], 'ID' ); ?>><?php _e( 'Page ID' ); ?></option>
+			</select>
+		</p>
+		<p>
+			<label for="<?php echo esc_attr( $this->get_field_id( 'exclude' ) ); ?>"><?php _e( 'Exclude:' ); ?></label>
+			<input type="text" value="<?php echo esc_attr( $instance['exclude'] ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'exclude' ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( 'exclude' ) ); ?>" class="widefat" />
+			<br />
+			<small><?php _e( 'Page IDs, separated by commas.' ); ?></small>
+		</p>
+		<?php
+	}
+
+}