diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-includes/widgets/class-wp-widget-archives.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/widgets/class-wp-widget-archives.php	Mon Oct 14 17:39:30 2019 +0200
@@ -0,0 +1,168 @@
+<?php
+/**
+ * Widget API: WP_Widget_Archives class
+ *
+ * @package WordPress
+ * @subpackage Widgets
+ * @since 4.4.0
+ */
+
+/**
+ * Core class used to implement the Archives widget.
+ *
+ * @since 2.8.0
+ *
+ * @see WP_Widget
+ */
+class WP_Widget_Archives extends WP_Widget {
+
+	/**
+	 * Sets up a new Archives widget instance.
+	 *
+	 * @since 2.8.0
+	 */
+	public function __construct() {
+		$widget_ops = array(
+			'classname' => 'widget_archive',
+			'description' => __( 'A monthly archive of your site&#8217;s Posts.' ),
+			'customize_selective_refresh' => true,
+		);
+		parent::__construct('archives', __('Archives'), $widget_ops);
+	}
+
+	/**
+	 * Outputs the content for the current Archives 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 Archives widget instance.
+	 */
+	public function widget( $args, $instance ) {
+		$title = ! empty( $instance['title'] ) ? $instance['title'] : __( 'Archives' );
+
+		/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
+		$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
+
+		$c = ! empty( $instance['count'] ) ? '1' : '0';
+		$d = ! empty( $instance['dropdown'] ) ? '1' : '0';
+
+		echo $args['before_widget'];
+
+		if ( $title ) {
+			echo $args['before_title'] . $title . $args['after_title'];
+		}
+
+		if ( $d ) {
+			$dropdown_id = "{$this->id_base}-dropdown-{$this->number}";
+			?>
+		<label class="screen-reader-text" for="<?php echo esc_attr( $dropdown_id ); ?>"><?php echo $title; ?></label>
+		<select id="<?php echo esc_attr( $dropdown_id ); ?>" name="archive-dropdown" onchange='document.location.href=this.options[this.selectedIndex].value;'>
+			<?php
+			/**
+			 * Filters the arguments for the Archives widget drop-down.
+			 *
+			 * @since 2.8.0
+			 * @since 4.9.0 Added the `$instance` parameter.
+			 *
+			 * @see wp_get_archives()
+			 *
+			 * @param array $args     An array of Archives widget drop-down arguments.
+			 * @param array $instance Settings for the current Archives widget instance.
+			 */
+			$dropdown_args = apply_filters( 'widget_archives_dropdown_args', array(
+				'type'            => 'monthly',
+				'format'          => 'option',
+				'show_post_count' => $c
+			), $instance );
+
+			switch ( $dropdown_args['type'] ) {
+				case 'yearly':
+					$label = __( 'Select Year' );
+					break;
+				case 'monthly':
+					$label = __( 'Select Month' );
+					break;
+				case 'daily':
+					$label = __( 'Select Day' );
+					break;
+				case 'weekly':
+					$label = __( 'Select Week' );
+					break;
+				default:
+					$label = __( 'Select Post' );
+					break;
+			}
+			?>
+
+			<option value=""><?php echo esc_attr( $label ); ?></option>
+			<?php wp_get_archives( $dropdown_args ); ?>
+
+		</select>
+		<?php } else { ?>
+		<ul>
+		<?php
+		/**
+		 * Filters the arguments for the Archives widget.
+		 *
+		 * @since 2.8.0
+		 * @since 4.9.0 Added the `$instance` parameter.
+		 *
+		 * @see wp_get_archives()
+		 *
+		 * @param array $args     An array of Archives option arguments.
+		 * @param array $instance Array of settings for the current widget.
+		 */
+		wp_get_archives( apply_filters( 'widget_archives_args', array(
+			'type'            => 'monthly',
+			'show_post_count' => $c
+		), $instance ) );
+		?>
+		</ul>
+		<?php
+		}
+
+		echo $args['after_widget'];
+	}
+
+	/**
+	 * Handles updating settings for the current Archives widget instance.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $new_instance New settings for this instance as input by the user via
+	 *                            WP_Widget_Archives::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;
+		$new_instance = wp_parse_args( (array) $new_instance, array( 'title' => '', 'count' => 0, 'dropdown' => '') );
+		$instance['title'] = sanitize_text_field( $new_instance['title'] );
+		$instance['count'] = $new_instance['count'] ? 1 : 0;
+		$instance['dropdown'] = $new_instance['dropdown'] ? 1 : 0;
+
+		return $instance;
+	}
+
+	/**
+	 * Outputs the settings form for the Archives widget.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @param array $instance Current settings.
+	 */
+	public function form( $instance ) {
+		$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'count' => 0, 'dropdown' => '') );
+		$title = sanitize_text_field( $instance['title'] );
+		?>
+		<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label> <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /></p>
+		<p>
+			<input class="checkbox" type="checkbox"<?php checked( $instance['dropdown'] ); ?> id="<?php echo $this->get_field_id('dropdown'); ?>" name="<?php echo $this->get_field_name('dropdown'); ?>" /> <label for="<?php echo $this->get_field_id('dropdown'); ?>"><?php _e('Display as dropdown'); ?></label>
+			<br/>
+			<input class="checkbox" type="checkbox"<?php checked( $instance['count'] ); ?> id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>" /> <label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Show post counts'); ?></label>
+		</p>
+		<?php
+	}
+}