From bdce0b81743ea4ed2c23008204b9f08c79f054de Mon Sep 17 00:00:00 2001
From: Scott Taylor <wonderboymusic@git.wordpress.org>
Date: Sat, 26 Sep 2015 06:00:09 +0000
Subject: [PATCH] Recent Comments Widget: a la [34464], this widget has the
 same mixed content issues. Remove the fragment caching. The comment queries
 are now split to scale. This was the only remaining widget with an HTML
 fragment cache.

Fixes #25556.


git-svn-id: https://develop.svn.wordpress.org/trunk@34581 602fd350-edb4-49c9-b593-d223f7449a82
---
 .../class-wp-widget-recent-comments.php       | 35 -------------------
 1 file changed, 35 deletions(-)

diff --git a/src/wp-includes/widgets/class-wp-widget-recent-comments.php b/src/wp-includes/widgets/class-wp-widget-recent-comments.php
index a9d07303a1..7bf5c6fb96 100644
--- a/src/wp-includes/widgets/class-wp-widget-recent-comments.php
+++ b/src/wp-includes/widgets/class-wp-widget-recent-comments.php
@@ -23,10 +23,6 @@ class WP_Widget_Recent_Comments extends WP_Widget {
 
 		if ( is_active_widget(false, false, $this->id_base) )
 			add_action( 'wp_head', array($this, 'recent_comments_style') );
-
-		add_action( 'comment_post', array($this, 'flush_widget_cache') );
-		add_action( 'edit_comment', array($this, 'flush_widget_cache') );
-		add_action( 'transition_comment_status', array($this, 'flush_widget_cache') );
 	}
 
 	/**
@@ -49,34 +45,14 @@ class WP_Widget_Recent_Comments extends WP_Widget {
 <?php
 	}
 
-	/**
-	 * @access public
-	 */
-	public function flush_widget_cache() {
-		wp_cache_delete('widget_recent_comments', 'widget');
-	}
-
 	/**
 	 * @param array $args
 	 * @param array $instance
 	 */
 	public function widget( $args, $instance ) {
-		$cache = array();
-		if ( ! $this->is_preview() ) {
-			$cache = wp_cache_get('widget_recent_comments', 'widget');
-		}
-		if ( ! is_array( $cache ) ) {
-			$cache = array();
-		}
-
 		if ( ! isset( $args['widget_id'] ) )
 			$args['widget_id'] = $this->id;
 
-		if ( isset( $cache[ $args['widget_id'] ] ) ) {
-			echo $cache[ $args['widget_id'] ];
-			return;
-		}
-
 		$output = '';
 
 		$title = ( ! empty( $instance['title'] ) ) ? $instance['title'] : __( 'Recent Comments' );
@@ -128,11 +104,6 @@ class WP_Widget_Recent_Comments extends WP_Widget {
 		$output .= $args['after_widget'];
 
 		echo $output;
-
-		if ( ! $this->is_preview() ) {
-			$cache[ $args['widget_id'] ] = $output;
-			wp_cache_set( 'widget_recent_comments', $cache, 'widget' );
-		}
 	}
 
 	/**
@@ -144,12 +115,6 @@ class WP_Widget_Recent_Comments extends WP_Widget {
 		$instance = $old_instance;
 		$instance['title'] = sanitize_text_field( $new_instance['title'] );
 		$instance['number'] = absint( $new_instance['number'] );
-		$this->flush_widget_cache();
-
-		$alloptions = wp_cache_get( 'alloptions', 'options' );
-		if ( isset($alloptions['widget_recent_comments']) )
-			delete_option('widget_recent_comments');
-
 		return $instance;
 	}