From c69ec5a19a2b6a96f8a03d432f5c0a9164d58271 Mon Sep 17 00:00:00 2001
From: John Blackbourn <johnbillion@git.wordpress.org>
Date: Fri, 25 Sep 2015 14:29:23 +0000
Subject: [PATCH] Introduce a `send_update_notification_email` which controls
 whether an update notification email is sent for background updates. This
 filter allows control over each of the update types (plugin, theme,
 translation) and compliments the `automatic_updates_send_debug_email` and
 `send_core_update_notification_email` filters.

Fixes #33932
Props ronalfy

Built from https://develop.svn.wordpress.org/trunk@34543


git-svn-id: http://core.svn.wordpress.org/trunk@34507 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/class-wp-upgrader.php | 22 ++++++++++++++++++++++
 wp-includes/version.php                 |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/wp-admin/includes/class-wp-upgrader.php b/wp-admin/includes/class-wp-upgrader.php
index 5a491caf25..2319b34870 100644
--- a/wp-admin/includes/class-wp-upgrader.php
+++ b/wp-admin/includes/class-wp-upgrader.php
@@ -3368,6 +3368,24 @@ class WP_Automatic_Updater {
 
 		// Plugins, Themes, Translations
 		foreach ( array( 'plugin', 'theme', 'translation' ) as $type ) {
+    		
+			/**
+			 * Filter to control whether a notification email is sent to the site admin email address for
+			 * plugin, theme, and translation updates.
+			 *
+			 * By default, this only has an effect when automatic background updates are enabled and a
+			 * development version of WordPress is in use.
+			 *
+			 * @since 4.4.0
+			 *
+			 * @param bool                 $notify Whether the site administrator is notified.
+			 * @param string               $type   The type of update. One of 'plugin', 'theme', or 'translation'.
+			 * @param WP_Automatic_Updater $this   The WP_Automatic_Updater instance.
+			 */
+			if ( ! apply_filters( 'send_update_notification_email', true, $type, $this ) ) {
+				continue;
+			}
+
 			if ( ! isset( $this->update_results[ $type ] ) )
 				continue;
 			$success_items = wp_list_filter( $this->update_results[ $type ], array( 'result' => true ) );
@@ -3402,6 +3420,10 @@ class WP_Automatic_Updater {
 			$body[] = '';
 		}
 
+		if ( empty( $body ) ) {
+			return;
+		}
+
 		$site_title = wp_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES );
 		if ( $failures ) {
 			$body[] = trim( __(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8573ed7f9e..e70dd8a562 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34542';
+$wp_version = '4.4-alpha-34543';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.