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<title>[38242] trunk/src/wp-admin/includes: Upgrader: Rename `class-wp-automatic-upgrader.php` to `class-wp-automatic-updater.php`.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/38242">38242</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/38242","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ocean90</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-08-10 19:50:18 +0000 (Wed, 10 Aug 2016)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Upgrader: Rename `class-wp-automatic-upgrader.php` to `class-wp-automatic-updater.php`.

The class is named `WP_Automatic_Updater` not `WP_Automatic_Upgrader` like all the other upgrader classes. 

Introduced in <a href="https://core.trac.wordpress.org/changeset/37409">[37409]</a>.
See <a href="https://core.trac.wordpress.org/ticket/37628">#37628</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminincludesclasswpupgraderphp">trunk/src/wp-admin/includes/class-wp-upgrader.php</a></li>
<li><a href="#trunksrcwpadminincludesupdatecorephp">trunk/src/wp-admin/includes/update-core.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunksrcwpadminincludesclasswpautomaticupdaterphp">trunk/src/wp-admin/includes/class-wp-automatic-updater.php</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#trunksrcwpadminincludesclasswpautomaticupgraderphp">trunk/src/wp-admin/includes/class-wp-automatic-upgrader.php</a></li>
</ul>

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<h3>Diff</h3>
<a id="trunksrcwpadminincludesclasswpautomaticupdaterphpfromrev38240trunksrcwpadminincludesclasswpautomaticupgraderphp"></a>
<div class="copfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Copied: trunk/src/wp-admin/includes/class-wp-automatic-updater.php (from rev 38240, trunk/src/wp-admin/includes/class-wp-automatic-upgrader.php)</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/class-wp-automatic-updater.php                                (rev 0)
+++ trunk/src/wp-admin/includes/class-wp-automatic-updater.php  2016-08-10 19:50:18 UTC (rev 38242)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,932 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * Upgrade API: WP_Automatic_Updater class
+ *
+ * @package WordPress
+ * @subpackage Upgrader
+ * @since 4.6.0
+ */
+
+/**
+ * Core class used for handling automatic background updates.
+ *
+ * @since 3.7.0
+ * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.
+ */
+class WP_Automatic_Updater {
+
+       /**
+        * Tracks update results during processing.
+        *
+        * @var array
+        * @access protected
+        */
+       protected $update_results = array();
+
+       /**
+        * Whether the entire automatic updater is disabled.
+        *
+        * @since 3.7.0
+        * @access public
+        */
+       public function is_disabled() {
+               // Background updates are disabled if you don't want file changes.
+               if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS )
+                       return true;
+
+               if ( wp_installing() )
+                       return true;
+
+               // More fine grained control can be done through the WP_AUTO_UPDATE_CORE constant and filters.
+               $disabled = defined( 'AUTOMATIC_UPDATER_DISABLED' ) && AUTOMATIC_UPDATER_DISABLED;
+
+               /**
+                * Filters whether to entirely disable background updates.
+                *
+                * There are more fine-grained filters and controls for selective disabling.
+                * This filter parallels the AUTOMATIC_UPDATER_DISABLED constant in name.
+                *
+                * This also disables update notification emails. That may change in the future.
+                *
+                * @since 3.7.0
+                *
+                * @param bool $disabled Whether the updater should be disabled.
+                */
+               return apply_filters( 'automatic_updater_disabled', $disabled );
+       }
+
+       /**
+        * Check for version control checkouts.
+        *
+        * Checks for Subversion, Git, Mercurial, and Bazaar. It recursively looks up the
+        * filesystem to the top of the drive, erring on the side of detecting a VCS
+        * checkout somewhere.
+        *
+        * ABSPATH is always checked in addition to whatever $context is (which may be the
+        * wp-content directory, for example). The underlying assumption is that if you are
+        * using version control *anywhere*, then you should be making decisions for
+        * how things get updated.
+        *
+        * @since 3.7.0
+        * @access public
+        *
+        * @param string $context The filesystem path to check, in addition to ABSPATH.
+        */
+       public function is_vcs_checkout( $context ) {
+               $context_dirs = array( untrailingslashit( $context ) );
+               if ( $context !== ABSPATH )
+                       $context_dirs[] = untrailingslashit( ABSPATH );
+
+               $vcs_dirs = array( '.svn', '.git', '.hg', '.bzr' );
+               $check_dirs = array();
+
+               foreach ( $context_dirs as $context_dir ) {
+                       // Walk up from $context_dir to the root.
+                       do {
+                               $check_dirs[] = $context_dir;
+
+                               // Once we've hit '/' or 'C:\', we need to stop. dirname will keep returning the input here.
+                               if ( $context_dir == dirname( $context_dir ) )
+                                       break;
+
+                       // Continue one level at a time.
+                       } while ( $context_dir = dirname( $context_dir ) );
+               }
+
+               $check_dirs = array_unique( $check_dirs );
+
+               // Search all directories we've found for evidence of version control.
+               foreach ( $vcs_dirs as $vcs_dir ) {
+                       foreach ( $check_dirs as $check_dir ) {
+                               if ( $checkout = @is_dir( rtrim( $check_dir, '\\/' ) . "/$vcs_dir" ) )
+                                       break 2;
+                       }
+               }
+
+               /**
+                * Filters whether the automatic updater should consider a filesystem
+                * location to be potentially managed by a version control system.
+                *
+                * @since 3.7.0
+                *
+                * @param bool $checkout  Whether a VCS checkout was discovered at $context
+                *                        or ABSPATH, or anywhere higher.
+                * @param string $context The filesystem context (a path) against which
+                *                        filesystem status should be checked.
+                */
+               return apply_filters( 'automatic_updates_is_vcs_checkout', $checkout, $context );
+       }
+
+       /**
+        * Tests to see if we can and should update a specific item.
+        *
+        * @since 3.7.0
+        * @access public
+        *
+        * @global wpdb $wpdb WordPress database abstraction object.
+        *
+        * @param string $type    The type of update being checked: 'core', 'theme',
+        *                        'plugin', 'translation'.
+        * @param object $item    The update offer.
+        * @param string $context The filesystem context (a path) against which filesystem
+        *                        access and status should be checked.
+        */
+       public function should_update( $type, $item, $context ) {
+               // Used to see if WP_Filesystem is set up to allow unattended updates.
+               $skin = new Automatic_Upgrader_Skin;
+
+               if ( $this->is_disabled() )
+                       return false;
+
+               // Only relax the filesystem checks when the update doesn't include new files
+               $allow_relaxed_file_ownership = false;
+               if ( 'core' == $type && isset( $item->new_files ) && ! $item->new_files ) {
+                       $allow_relaxed_file_ownership = true;
+               }
+
+               // If we can't do an auto core update, we may still be able to email the user.
+               if ( ! $skin->request_filesystem_credentials( false, $context, $allow_relaxed_file_ownership ) || $this->is_vcs_checkout( $context ) ) {
+                       if ( 'core' == $type )
+                               $this->send_core_update_notification_email( $item );
+                       return false;
+               }
+
+               // Next up, is this an item we can update?
+               if ( 'core' == $type )
+                       $update = Core_Upgrader::should_update_to_version( $item->current );
+               else
+                       $update = ! empty( $item->autoupdate );
+
+               /**
+                * Filters whether to automatically update core, a plugin, a theme, or a language.
+                *
+                * The dynamic portion of the hook name, `$type`, refers to the type of update
+                * being checked. Can be 'core', 'theme', 'plugin', or 'translation'.
+                *
+                * Generally speaking, plugins, themes, and major core versions are not updated
+                * by default, while translations and minor and development versions for core
+                * are updated by default.
+                *
+                * See the {@see 'allow_dev_auto_core_updates', {@see 'allow_minor_auto_core_updates'},
+                * and {@see 'allow_major_auto_core_updates'} filters for a more straightforward way to
+                * adjust core updates.
+                *
+                * @since 3.7.0
+                *
+                * @param bool   $update Whether to update.
+                * @param object $item   The update offer.
+                */
+               $update = apply_filters( 'auto_update_' . $type, $update, $item );
+
+               if ( ! $update ) {
+                       if ( 'core' == $type )
+                               $this->send_core_update_notification_email( $item );
+                       return false;
+               }
+
+               // If it's a core update, are we actually compatible with its requirements?
+               if ( 'core' == $type ) {
+                       global $wpdb;
+
+                       $php_compat = version_compare( phpversion(), $item->php_version, '>=' );
+                       if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
+                               $mysql_compat = true;
+                       else
+                               $mysql_compat = version_compare( $wpdb->db_version(), $item->mysql_version, '>=' );
+
+                       if ( ! $php_compat || ! $mysql_compat )
+                               return false;
+               }
+
+               return true;
+       }
+
+       /**
+        * Notifies an administrator of a core update.
+        *
+        * @since 3.7.0
+        * @access protected
+        *
+        * @param object $item The update offer.
+        */
+       protected function send_core_update_notification_email( $item ) {
+               $notified = get_site_option( 'auto_core_update_notified' );
+
+               // Don't notify if we've already notified the same email address of the same version.
+               if ( $notified && $notified['email'] == get_site_option( 'admin_email' ) && $notified['version'] == $item->current )
+                       return false;
+
+               // See if we need to notify users of a core update.
+               $notify = ! empty( $item->notify_email );
+
+               /**
+                * Filters whether to notify the site administrator of a new core update.
+                *
+                * By default, administrators are notified when the update offer received
+                * from WordPress.org sets a particular flag. This allows some discretion
+                * in if and when to notify.
+                *
+                * This filter is only evaluated once per release. If the same email address
+                * was already notified of the same new version, WordPress won't repeatedly
+                * email the administrator.
+                *
+                * This filter is also used on about.php to check if a plugin has disabled
+                * these notifications.
+                *
+                * @since 3.7.0
+                *
+                * @param bool   $notify Whether the site administrator is notified.
+                * @param object $item   The update offer.
+                */
+               if ( ! apply_filters( 'send_core_update_notification_email', $notify, $item ) )
+                       return false;
+
+               $this->send_email( 'manual', $item );
+               return true;
+       }
+
+       /**
+        * Update an item, if appropriate.
+        *
+        * @since 3.7.0
+        * @access public
+        *
+        * @param string $type The type of update being checked: 'core', 'theme', 'plugin', 'translation'.
+        * @param object $item The update offer.
+        *
+        * @return null|WP_Error
+        */
+       public function update( $type, $item ) {
+               $skin = new Automatic_Upgrader_Skin;
+
+               switch ( $type ) {
+                       case 'core':
+                               // The Core upgrader doesn't use the Upgrader's skin during the actual main part of the upgrade, instead, firing a filter.
+                               add_filter( 'update_feedback', array( $skin, 'feedback' ) );
+                               $upgrader = new Core_Upgrader( $skin );
+                               $context  = ABSPATH;
+                               break;
+                       case 'plugin':
+                               $upgrader = new Plugin_Upgrader( $skin );
+                               $context  = WP_PLUGIN_DIR; // We don't support custom Plugin directories, or updates for WPMU_PLUGIN_DIR
+                               break;
+                       case 'theme':
+                               $upgrader = new Theme_Upgrader( $skin );
+                               $context  = get_theme_root( $item->theme );
+                               break;
+                       case 'translation':
+                               $upgrader = new Language_Pack_Upgrader( $skin );
+                               $context  = WP_CONTENT_DIR; // WP_LANG_DIR;
+                               break;
+               }
+
+               // Determine whether we can and should perform this update.
+               if ( ! $this->should_update( $type, $item, $context ) )
+                       return false;
+
+               /**
+                * Fires immediately prior to an auto-update.
+                *
+                * @since 4.4.0
+                *
+                * @param string $type    The type of update being checked: 'core', 'theme', 'plugin', or 'translation'.
+                * @param object $item    The update offer.
+                * @param string $context The filesystem context (a path) against which filesystem access and status
+                *                        should be checked.
+                */
+               do_action( 'pre_auto_update', $type, $item, $context );
+
+               $upgrader_item = $item;
+               switch ( $type ) {
+                       case 'core':
+                               $skin->feedback( __( 'Updating to WordPress %s' ), $item->version );
+                               $item_name = sprintf( __( 'WordPress %s' ), $item->version );
+                               break;
+                       case 'theme':
+                               $upgrader_item = $item->theme;
+                               $theme = wp_get_theme( $upgrader_item );
+                               $item_name = $theme->Get( 'Name' );
+                               $skin->feedback( __( 'Updating theme: %s' ), $item_name );
+                               break;
+                       case 'plugin':
+                               $upgrader_item = $item->plugin;
+                               $plugin_data = get_plugin_data( $context . '/' . $upgrader_item );
+                               $item_name = $plugin_data['Name'];
+                               $skin->feedback( __( 'Updating plugin: %s' ), $item_name );
+                               break;
+                       case 'translation':
+                               $language_item_name = $upgrader->get_name_for_update( $item );
+                               $item_name = sprintf( __( 'Translations for %s' ), $language_item_name );
+                               $skin->feedback( sprintf( __( 'Updating translations for %1$s (%2$s)&#8230;' ), $language_item_name, $item->language ) );
+                               break;
+               }
+
+               $allow_relaxed_file_ownership = false;
+               if ( 'core' == $type && isset( $item->new_files ) && ! $item->new_files ) {
+                       $allow_relaxed_file_ownership = true;
+               }
+
+               // Boom, This sites about to get a whole new splash of paint!
+               $upgrade_result = $upgrader->upgrade( $upgrader_item, array(
+                       'clear_update_cache' => false,
+                       // Always use partial builds if possible for core updates.
+                       'pre_check_md5'      => false,
+                       // Only available for core updates.
+                       'attempt_rollback'   => true,
+                       // Allow relaxed file ownership in some scenarios
+                       'allow_relaxed_file_ownership' => $allow_relaxed_file_ownership,
+               ) );
+
+               // If the filesystem is unavailable, false is returned.
+               if ( false === $upgrade_result ) {
+                       $upgrade_result = new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) );
+               }
+
+               if ( 'core' == $type ) {
+                       if ( is_wp_error( $upgrade_result ) && ( 'up_to_date' == $upgrade_result->get_error_code() || 'locked' == $upgrade_result->get_error_code() ) ) {
+                               // These aren't actual errors, treat it as a skipped-update instead to avoid triggering the post-core update failure routines.
+                               return false;
+                       }
+
+                       // Core doesn't output this, so let's append it so we don't get confused.
+                       if ( is_wp_error( $upgrade_result ) ) {
+                               $skin->error( __( 'Installation Failed' ), $upgrade_result );
+                       } else {
+                               $skin->feedback( __( 'WordPress updated successfully' ) );
+                       }
+               }
+
+               $this->update_results[ $type ][] = (object) array(
+                       'item'     => $item,
+                       'result'   => $upgrade_result,
+                       'name'     => $item_name,
+                       'messages' => $skin->get_upgrade_messages()
+               );
+
+               return $upgrade_result;
+       }
+
+       /**
+        * Kicks off the background update process, looping through all pending updates.
+        *
+        * @since 3.7.0
+        * @access public
+        *
+        * @global wpdb   $wpdb
+        * @global string $wp_version
+        */
+       public function run() {
+               global $wpdb, $wp_version;
+
+               if ( $this->is_disabled() )
+                       return;
+
+               if ( ! is_main_network() || ! is_main_site() )
+                       return;
+
+               if ( ! WP_Upgrader::create_lock( 'auto_updater' ) )
+                       return;
+
+               // Don't automatically run these thins, as we'll handle it ourselves
+               remove_action( 'upgrader_process_complete', array( 'Language_Pack_Upgrader', 'async_upgrade' ), 20 );
+               remove_action( 'upgrader_process_complete', 'wp_version_check' );
+               remove_action( 'upgrader_process_complete', 'wp_update_plugins' );
+               remove_action( 'upgrader_process_complete', 'wp_update_themes' );
+
+               // Next, Plugins
+               wp_update_plugins(); // Check for Plugin updates
+               $plugin_updates = get_site_transient( 'update_plugins' );
+               if ( $plugin_updates && !empty( $plugin_updates->response ) ) {
+                       foreach ( $plugin_updates->response as $plugin ) {
+                               $this->update( 'plugin', $plugin );
+                       }
+                       // Force refresh of plugin update information
+                       wp_clean_plugins_cache();
+               }
+
+               // Next, those themes we all love
+               wp_update_themes();  // Check for Theme updates
+               $theme_updates = get_site_transient( 'update_themes' );
+               if ( $theme_updates && !empty( $theme_updates->response ) ) {
+                       foreach ( $theme_updates->response as $theme ) {
+                               $this->update( 'theme', (object) $theme );
+                       }
+                       // Force refresh of theme update information
+                       wp_clean_themes_cache();
+               }
+
+               // Next, Process any core update
+               wp_version_check(); // Check for Core updates
+               $core_update = find_core_auto_update();
+
+               if ( $core_update )
+                       $this->update( 'core', $core_update );
+
+               // Clean up, and check for any pending translations
+               // (Core_Upgrader checks for core updates)
+               $theme_stats = array();
+               if ( isset( $this->update_results['theme'] ) ) {
+                       foreach ( $this->update_results['theme'] as $upgrade ) {
+                               $theme_stats[ $upgrade->item->theme ] = ( true === $upgrade->result );
+                       }
+               }
+               wp_update_themes( $theme_stats );  // Check for Theme updates
+
+               $plugin_stats = array();
+               if ( isset( $this->update_results['plugin'] ) ) {
+                       foreach ( $this->update_results['plugin'] as $upgrade ) {
+                               $plugin_stats[ $upgrade->item->plugin ] = ( true === $upgrade->result );
+                       }
+               }
+               wp_update_plugins( $plugin_stats ); // Check for Plugin updates
+
+               // Finally, Process any new translations
+               $language_updates = wp_get_translation_updates();
+               if ( $language_updates ) {
+                       foreach ( $language_updates as $update ) {
+                               $this->update( 'translation', $update );
+                       }
+
+                       // Clear existing caches
+                       wp_clean_update_cache();
+
+                       wp_version_check();  // check for Core updates
+                       wp_update_themes();  // Check for Theme updates
+                       wp_update_plugins(); // Check for Plugin updates
+               }
+
+               // Send debugging email to all development installs.
+               if ( ! empty( $this->update_results ) ) {
+                       $development_version = false !== strpos( $wp_version, '-' );
+
+                       /**
+                        * Filters whether to send a debugging email for each automatic background update.
+                        *
+                        * @since 3.7.0
+                        *
+                        * @param bool $development_version By default, emails are sent if the
+                        *                                  install is a development version.
+                        *                                  Return false to avoid the email.
+                        */
+                       if ( apply_filters( 'automatic_updates_send_debug_email', $development_version ) )
+                               $this->send_debug_email();
+
+                       if ( ! empty( $this->update_results['core'] ) )
+                               $this->after_core_update( $this->update_results['core'][0] );
+
+                       /**
+                        * Fires after all automatic updates have run.
+                        *
+                        * @since 3.8.0
+                        *
+                        * @param array $update_results The results of all attempted updates.
+                        */
+                       do_action( 'automatic_updates_complete', $this->update_results );
+               }
+
+               WP_Upgrader::release_lock( 'auto_updater' );
+       }
+
+       /**
+        * If we tried to perform a core update, check if we should send an email,
+        * and if we need to avoid processing future updates.
+        *
+        * @since Unknown
+        * @access protected
+        *
+        * @global string $wp_version
+        *
+        * @param object $update_result The result of the core update. Includes the update offer and result.
+        */
+       protected function after_core_update( $update_result ) {
+               global $wp_version;
+
+               $core_update = $update_result->item;
+               $result      = $update_result->result;
+
+               if ( ! is_wp_error( $result ) ) {
+                       $this->send_email( 'success', $core_update );
+                       return;
+               }
+
+               $error_code = $result->get_error_code();
+
+               // Any of these WP_Error codes are critical failures, as in they occurred after we started to copy core files.
+               // We should not try to perform a background update again until there is a successful one-click update performed by the user.
+               $critical = false;
+               if ( $error_code === 'disk_full' || false !== strpos( $error_code, '__copy_dir' ) ) {
+                       $critical = true;
+               } elseif ( $error_code === 'rollback_was_required' && is_wp_error( $result->get_error_data()->rollback ) ) {
+                       // A rollback is only critical if it failed too.
+                       $critical = true;
+                       $rollback_result = $result->get_error_data()->rollback;
+               } elseif ( false !== strpos( $error_code, 'do_rollback' ) ) {
+                       $critical = true;
+               }
+
+               if ( $critical ) {
+                       $critical_data = array(
+                               'attempted'  => $core_update->current,
+                               'current'    => $wp_version,
+                               'error_code' => $error_code,
+                               'error_data' => $result->get_error_data(),
+                               'timestamp'  => time(),
+                               'critical'   => true,
+                       );
+                       if ( isset( $rollback_result ) ) {
+                               $critical_data['rollback_code'] = $rollback_result->get_error_code();
+                               $critical_data['rollback_data'] = $rollback_result->get_error_data();
+                       }
+                       update_site_option( 'auto_core_update_failed', $critical_data );
+                       $this->send_email( 'critical', $core_update, $result );
+                       return;
+               }
+
+               /*
+                * Any other WP_Error code (like download_failed or files_not_writable) occurs before
+                * we tried to copy over core files. Thus, the failures are early and graceful.
+                *
+                * We should avoid trying to perform a background update again for the same version.
+                * But we can try again if another version is released.
+                *
+                * For certain 'transient' failures, like download_failed, we should allow retries.
+                * In fact, let's schedule a special update for an hour from now. (It's possible
+                * the issue could actually be on WordPress.org's side.) If that one fails, then email.
+                */
+               $send = true;
+               $transient_failures = array( 'incompatible_archive', 'download_failed', 'insane_distro', 'locked' );
+               if ( in_array( $error_code, $transient_failures ) && ! get_site_option( 'auto_core_update_failed' ) ) {
+                       wp_schedule_single_event( time() + HOUR_IN_SECONDS, 'wp_maybe_auto_update' );
+                       $send = false;
+               }
+
+               $n = get_site_option( 'auto_core_update_notified' );
+               // Don't notify if we've already notified the same email address of the same version of the same notification type.
+               if ( $n && 'fail' == $n['type'] && $n['email'] == get_site_option( 'admin_email' ) && $n['version'] == $core_update->current )
+                       $send = false;
+
+               update_site_option( 'auto_core_update_failed', array(
+                       'attempted'  => $core_update->current,
+                       'current'    => $wp_version,
+                       'error_code' => $error_code,
+                       'error_data' => $result->get_error_data(),
+                       'timestamp'  => time(),
+                       'retry'      => in_array( $error_code, $transient_failures ),
+               ) );
+
+               if ( $send )
+                       $this->send_email( 'fail', $core_update, $result );
+       }
+
+       /**
+        * Sends an email upon the completion or failure of a background core update.
+        *
+        * @since 3.7.0
+        * @access protected
+        *
+        * @global string $wp_version
+        *
+        * @param string $type        The type of email to send. Can be one of 'success', 'fail', 'manual', 'critical'.
+        * @param object $core_update The update offer that was attempted.
+        * @param mixed  $result      Optional. The result for the core update. Can be WP_Error.
+        */
+       protected function send_email( $type, $core_update, $result = null ) {
+               update_site_option( 'auto_core_update_notified', array(
+                       'type'      => $type,
+                       'email'     => get_site_option( 'admin_email' ),
+                       'version'   => $core_update->current,
+                       'timestamp' => time(),
+               ) );
+
+               $next_user_core_update = get_preferred_from_update_core();
+               // If the update transient is empty, use the update we just performed
+               if ( ! $next_user_core_update )
+                       $next_user_core_update = $core_update;
+               $newer_version_available = ( 'upgrade' == $next_user_core_update->response && version_compare( $next_user_core_update->version, $core_update->version, '>' ) );
+
+               /**
+                * Filters whether to send an email following an automatic background core update.
+                *
+                * @since 3.7.0
+                *
+                * @param bool   $send        Whether to send the email. Default true.
+                * @param string $type        The type of email to send. Can be one of
+                *                            'success', 'fail', 'critical'.
+                * @param object $core_update The update offer that was attempted.
+                * @param mixed  $result      The result for the core update. Can be WP_Error.
+                */
+               if ( 'manual' !== $type && ! apply_filters( 'auto_core_update_send_email', true, $type, $core_update, $result ) )
+                       return;
+
+               switch ( $type ) {
+                       case 'success' : // We updated.
+                               /* translators: 1: Site name, 2: WordPress version number. */
+                               $subject = __( '[%1$s] Your site has updated to WordPress %2$s' );
+                               break;
+
+                       case 'fail' :   // We tried to update but couldn't.
+                       case 'manual' : // We can't update (and made no attempt).
+                               /* translators: 1: Site name, 2: WordPress version number. */
+                               $subject = __( '[%1$s] WordPress %2$s is available. Please update!' );
+                               break;
+
+                       case 'critical' : // We tried to update, started to copy files, then things went wrong.
+                               /* translators: 1: Site name. */
+                               $subject = __( '[%1$s] URGENT: Your site may be down due to a failed update' );
+                               break;
+
+                       default :
+                               return;
+               }
+
+               // If the auto update is not to the latest version, say that the current version of WP is available instead.
+               $version = 'success' === $type ? $core_update->current : $next_user_core_update->current;
+               $subject = sprintf( $subject, wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ), $version );
+
+               $body = '';
+
+               switch ( $type ) {
+                       case 'success' :
+                               $body .= sprintf( __( 'Howdy! Your site at %1$s has been updated automatically to WordPress %2$s.' ), home_url(), $core_update->current );
+                               $body .= "\n\n";
+                               if ( ! $newer_version_available )
+                                       $body .= __( 'No further action is needed on your part.' ) . ' ';
+
+                               // Can only reference the About screen if their update was successful.
+                               list( $about_version ) = explode( '-', $core_update->current, 2 );
+                               $body .= sprintf( __( "For more on version %s, see the About WordPress screen:" ), $about_version );
+                               $body .= "\n" . admin_url( 'about.php' );
+
+                               if ( $newer_version_available ) {
+                                       $body .= "\n\n" . sprintf( __( 'WordPress %s is also now available.' ), $next_user_core_update->current ) . ' ';
+                                       $body .= __( 'Updating is easy and only takes a few moments:' );
+                                       $body .= "\n" . network_admin_url( 'update-core.php' );
+                               }
+
+                               break;
+
+                       case 'fail' :
+                       case 'manual' :
+                               $body .= sprintf( __( 'Please update your site at %1$s to WordPress %2$s.' ), home_url(), $next_user_core_update->current );
+
+                               $body .= "\n\n";
+
+                               // Don't show this message if there is a newer version available.
+                               // Potential for confusion, and also not useful for them to know at this point.
+                               if ( 'fail' == $type && ! $newer_version_available )
+                                       $body .= __( 'We tried but were unable to update your site automatically.' ) . ' ';
+
+                               $body .= __( 'Updating is easy and only takes a few moments:' );
+                               $body .= "\n" . network_admin_url( 'update-core.php' );
+                               break;
+
+                       case 'critical' :
+                               if ( $newer_version_available )
+                                       $body .= sprintf( __( 'Your site at %1$s experienced a critical failure while trying to update WordPress to version %2$s.' ), home_url(), $core_update->current );
+                               else
+                                       $body .= sprintf( __( 'Your site at %1$s experienced a critical failure while trying to update to the latest version of WordPress, %2$s.' ), home_url(), $core_update->current );
+
+                               $body .= "\n\n" . __( "This means your site may be offline or broken. Don't panic; this can be fixed." );
+
+                               $body .= "\n\n" . __( "Please check out your site now. It's possible that everything is working. If it says you need to update, you should do so:" );
+                               $body .= "\n" . network_admin_url( 'update-core.php' );
+                               break;
+               }
+
+               $critical_support = 'critical' === $type && ! empty( $core_update->support_email );
+               if ( $critical_support ) {
+                       // Support offer if available.
+                       $body .= "\n\n" . sprintf( __( "The WordPress team is willing to help you. Forward this email to %s and the team will work with you to make sure your site is working." ), $core_update->support_email );
+               } else {
+                       // Add a note about the support forums.
+                       $body .= "\n\n" . __( 'If you experience any issues or need support, the volunteers in the WordPress.org support forums may be able to help.' );
+                       $body .= "\n" . __( 'https://wordpress.org/support/' );
+               }
+
+               // Updates are important!
+               if ( $type != 'success' || $newer_version_available ) {
+                       $body .= "\n\n" . __( 'Keeping your site updated is important for security. It also makes the internet a safer place for you and your readers.' );
+               }
+
+               if ( $critical_support ) {
+                       $body .= " " . __( "If you reach out to us, we'll also ensure you'll never have this problem again." );
+               }
+
+               // If things are successful and we're now on the latest, mention plugins and themes if any are out of date.
+               if ( $type == 'success' && ! $newer_version_available && ( get_plugin_updates() || get_theme_updates() ) ) {
+                       $body .= "\n\n" . __( 'You also have some plugins or themes with updates available. Update them now:' );
+                       $body .= "\n" . network_admin_url();
+               }
+
+               $body .= "\n\n" . __( 'The WordPress Team' ) . "\n";
+
+               if ( 'critical' == $type && is_wp_error( $result ) ) {
+                       $body .= "\n***\n\n";
+                       $body .= sprintf( __( 'Your site was running version %s.' ), $GLOBALS['wp_version'] );
+                       $body .= ' ' . __( 'We have some data that describes the error your site encountered.' );
+                       $body .= ' ' . __( 'Your hosting company, support forum volunteers, or a friendly developer may be able to use this information to help you:' );
+
+                       // If we had a rollback and we're still critical, then the rollback failed too.
+                       // Loop through all errors (the main WP_Error, the update result, the rollback result) for code, data, etc.
+                       if ( 'rollback_was_required' == $result->get_error_code() )
+                               $errors = array( $result, $result->get_error_data()->update, $result->get_error_data()->rollback );
+                       else
+                               $errors = array( $result );
+
+                       foreach ( $errors as $error ) {
+                               if ( ! is_wp_error( $error ) )
+                                       continue;
+                               $error_code = $error->get_error_code();
+                               $body .= "\n\n" . sprintf( __( "Error code: %s" ), $error_code );
+                               if ( 'rollback_was_required' == $error_code )
+                                       continue;
+                               if ( $error->get_error_message() )
+                                       $body .= "\n" . $error->get_error_message();
+                               $error_data = $error->get_error_data();
+                               if ( $error_data )
+                                       $body .= "\n" . implode( ', ', (array) $error_data );
+                       }
+                       $body .= "\n";
+               }
+
+               $to  = get_site_option( 'admin_email' );
+               $headers = '';
+
+               $email = compact( 'to', 'subject', 'body', 'headers' );
+
+               /**
+                * Filters the email sent following an automatic background core update.
+                *
+                * @since 3.7.0
+                *
+                * @param array $email {
+                *     Array of email arguments that will be passed to wp_mail().
+                *
+                *     @type string $to      The email recipient. An array of emails
+                *                            can be returned, as handled by wp_mail().
+                *     @type string $subject The email's subject.
+                *     @type string $body    The email message body.
+                *     @type string $headers Any email headers, defaults to no headers.
+                * }
+                * @param string $type        The type of email being sent. Can be one of
+                *                            'success', 'fail', 'manual', 'critical'.
+                * @param object $core_update The update offer that was attempted.
+                * @param mixed  $result      The result for the core update. Can be WP_Error.
+                */
+               $email = apply_filters( 'auto_core_update_email', $email, $type, $core_update, $result );
+
+               wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] );
+       }
+
+       /**
+        * Prepares and sends an email of a full log of background update results, useful for debugging and geekery.
+        *
+        * @since 3.7.0
+        * @access protected
+        */
+       protected function send_debug_email() {
+               $update_count = 0;
+               foreach ( $this->update_results as $type => $updates )
+                       $update_count += count( $updates );
+
+               $body = array();
+               $failures = 0;
+
+               $body[] = sprintf( __( 'WordPress site: %s' ), network_home_url( '/' ) );
+
+               // Core
+               if ( isset( $this->update_results['core'] ) ) {
+                       $result = $this->update_results['core'][0];
+                       if ( $result->result && ! is_wp_error( $result->result ) ) {
+                               $body[] = sprintf( __( 'SUCCESS: WordPress was successfully updated to %s' ), $result->name );
+                       } else {
+                               $body[] = sprintf( __( 'FAILED: WordPress failed to update to %s' ), $result->name );
+                               $failures++;
+                       }
+                       $body[] = '';
+               }
+
+               // Plugins, Themes, Translations
+               foreach ( array( 'plugin', 'theme', 'translation' ) as $type ) {
+                       if ( ! isset( $this->update_results[ $type ] ) )
+                               continue;
+                       $success_items = wp_list_filter( $this->update_results[ $type ], array( 'result' => true ) );
+                       if ( $success_items ) {
+                               $messages = array(
+                                       'plugin'      => __( 'The following plugins were successfully updated:' ),
+                                       'theme'       => __( 'The following themes were successfully updated:' ),
+                                       'translation' => __( 'The following translations were successfully updated:' ),
+                               );
+
+                               $body[] = $messages[ $type ];
+                               foreach ( wp_list_pluck( $success_items, 'name' ) as $name ) {
+                                       $body[] = ' * ' . sprintf( __( 'SUCCESS: %s' ), $name );
+                               }
+                       }
+                       if ( $success_items != $this->update_results[ $type ] ) {
+                               // Failed updates
+                               $messages = array(
+                                       'plugin'      => __( 'The following plugins failed to update:' ),
+                                       'theme'       => __( 'The following themes failed to update:' ),
+                                       'translation' => __( 'The following translations failed to update:' ),
+                               );
+
+                               $body[] = $messages[ $type ];
+                               foreach ( $this->update_results[ $type ] as $item ) {
+                                       if ( ! $item->result || is_wp_error( $item->result ) ) {
+                                               $body[] = ' * ' . sprintf( __( 'FAILED: %s' ), $item->name );
+                                               $failures++;
+                                       }
+                               }
+                       }
+                       $body[] = '';
+               }
+
+               $site_title = wp_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES );
+               if ( $failures ) {
+                       $body[] = trim( __(
+"BETA TESTING?
+=============
+
+This debugging email is sent when you are using a development version of WordPress.
+
+If you think these failures might be due to a bug in WordPress, could you report it?
+ * Open a thread in the support forums: https://wordpress.org/support/forum/alphabeta
+ * Or, if you're comfortable writing a bug report: https://core.trac.wordpress.org/
+
+Thanks! -- The WordPress Team" ) );
+                       $body[] = '';
+
+                       $subject = sprintf( __( '[%s] There were failures during background updates' ), $site_title );
+               } else {
+                       $subject = sprintf( __( '[%s] Background updates have finished' ), $site_title );
+               }
+
+               $body[] = trim( __(
+'UPDATE LOG
+==========' ) );
+               $body[] = '';
+
+               foreach ( array( 'core', 'plugin', 'theme', 'translation' ) as $type ) {
+                       if ( ! isset( $this->update_results[ $type ] ) )
+                               continue;
+                       foreach ( $this->update_results[ $type ] as $update ) {
+                               $body[] = $update->name;
+                               $body[] = str_repeat( '-', strlen( $update->name ) );
+                               foreach ( $update->messages as $message )
+                                       $body[] = "  " . html_entity_decode( str_replace( '&#8230;', '...', $message ) );
+                               if ( is_wp_error( $update->result ) ) {
+                                       $results = array( 'update' => $update->result );
+                                       // If we rolled back, we want to know an error that occurred then too.
+                                       if ( 'rollback_was_required' === $update->result->get_error_code() )
+                                               $results = (array) $update->result->get_error_data();
+                                       foreach ( $results as $result_type => $result ) {
+                                               if ( ! is_wp_error( $result ) )
+                                                       continue;
+
+                                               if ( 'rollback' === $result_type ) {
+                                                       /* translators: 1: Error code, 2: Error message. */
+                                                       $body[] = '  ' . sprintf( __( 'Rollback Error: [%1$s] %2$s' ), $result->get_error_code(), $result->get_error_message() );
+                                               } else {
+                                                       /* translators: 1: Error code, 2: Error message. */
+                                                       $body[] = '  ' . sprintf( __( 'Error: [%1$s] %2$s' ), $result->get_error_code(), $result->get_error_message() );
+                                               }
+
+                                               if ( $result->get_error_data() )
+                                                       $body[] = '         ' . implode( ', ', (array) $result->get_error_data() );
+                                       }
+                               }
+                               $body[] = '';
+                       }
+               }
+
+               $email = array(
+                       'to'      => get_site_option( 'admin_email' ),
+                       'subject' => $subject,
+                       'body'    => implode( "\n", $body ),
+                       'headers' => ''
+               );
+
+               /**
+                * Filters the debug email that can be sent following an automatic
+                * background core update.
+                *
+                * @since 3.8.0
+                *
+                * @param array $email {
+                *     Array of email arguments that will be passed to wp_mail().
+                *
+                *     @type string $to      The email recipient. An array of emails
+                *                           can be returned, as handled by wp_mail().
+                *     @type string $subject Email subject.
+                *     @type string $body    Email message body.
+                *     @type string $headers Any email headers. Default empty.
+                * }
+                * @param int   $failures The number of failures encountered while upgrading.
+                * @param mixed $results  The results of all attempted updates.
+                */
+               $email = apply_filters( 'automatic_updates_debug_email', $email, $failures, $this->update_results );
+
+               wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] );
+       }
+}
</ins></span></pre></div>
<a id="trunksrcwpadminincludesclasswpautomaticupgraderphp"></a>
<div class="delfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Deleted: trunk/src/wp-admin/includes/class-wp-automatic-upgrader.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/class-wp-automatic-upgrader.php       2016-08-10 19:05:02 UTC (rev 38241)
+++ trunk/src/wp-admin/includes/class-wp-automatic-upgrader.php 2016-08-10 19:50:18 UTC (rev 38242)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1,932 +0,0 @@
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-<?php
-/**
- * Upgrade API: WP_Automatic_Updater class
- *
- * @package WordPress
- * @subpackage Upgrader
- * @since 4.6.0
- */
-
-/**
- * Core class used for handling automatic background updates.
- *
- * @since 3.7.0
- * @since 4.6.0 Moved to its own file from wp-admin/includes/class-wp-upgrader.php.
- */
-class WP_Automatic_Updater {
-
-       /**
-        * Tracks update results during processing.
-        *
-        * @var array
-        * @access protected
-        */
-       protected $update_results = array();
-
-       /**
-        * Whether the entire automatic updater is disabled.
-        *
-        * @since 3.7.0
-        * @access public
-        */
-       public function is_disabled() {
-               // Background updates are disabled if you don't want file changes.
-               if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS )
-                       return true;
-
-               if ( wp_installing() )
-                       return true;
-
-               // More fine grained control can be done through the WP_AUTO_UPDATE_CORE constant and filters.
-               $disabled = defined( 'AUTOMATIC_UPDATER_DISABLED' ) && AUTOMATIC_UPDATER_DISABLED;
-
-               /**
-                * Filters whether to entirely disable background updates.
-                *
-                * There are more fine-grained filters and controls for selective disabling.
-                * This filter parallels the AUTOMATIC_UPDATER_DISABLED constant in name.
-                *
-                * This also disables update notification emails. That may change in the future.
-                *
-                * @since 3.7.0
-                *
-                * @param bool $disabled Whether the updater should be disabled.
-                */
-               return apply_filters( 'automatic_updater_disabled', $disabled );
-       }
-
-       /**
-        * Check for version control checkouts.
-        *
-        * Checks for Subversion, Git, Mercurial, and Bazaar. It recursively looks up the
-        * filesystem to the top of the drive, erring on the side of detecting a VCS
-        * checkout somewhere.
-        *
-        * ABSPATH is always checked in addition to whatever $context is (which may be the
-        * wp-content directory, for example). The underlying assumption is that if you are
-        * using version control *anywhere*, then you should be making decisions for
-        * how things get updated.
-        *
-        * @since 3.7.0
-        * @access public
-        *
-        * @param string $context The filesystem path to check, in addition to ABSPATH.
-        */
-       public function is_vcs_checkout( $context ) {
-               $context_dirs = array( untrailingslashit( $context ) );
-               if ( $context !== ABSPATH )
-                       $context_dirs[] = untrailingslashit( ABSPATH );
-
-               $vcs_dirs = array( '.svn', '.git', '.hg', '.bzr' );
-               $check_dirs = array();
-
-               foreach ( $context_dirs as $context_dir ) {
-                       // Walk up from $context_dir to the root.
-                       do {
-                               $check_dirs[] = $context_dir;
-
-                               // Once we've hit '/' or 'C:\', we need to stop. dirname will keep returning the input here.
-                               if ( $context_dir == dirname( $context_dir ) )
-                                       break;
-
-                       // Continue one level at a time.
-                       } while ( $context_dir = dirname( $context_dir ) );
-               }
-
-               $check_dirs = array_unique( $check_dirs );
-
-               // Search all directories we've found for evidence of version control.
-               foreach ( $vcs_dirs as $vcs_dir ) {
-                       foreach ( $check_dirs as $check_dir ) {
-                               if ( $checkout = @is_dir( rtrim( $check_dir, '\\/' ) . "/$vcs_dir" ) )
-                                       break 2;
-                       }
-               }
-
-               /**
-                * Filters whether the automatic updater should consider a filesystem
-                * location to be potentially managed by a version control system.
-                *
-                * @since 3.7.0
-                *
-                * @param bool $checkout  Whether a VCS checkout was discovered at $context
-                *                        or ABSPATH, or anywhere higher.
-                * @param string $context The filesystem context (a path) against which
-                *                        filesystem status should be checked.
-                */
-               return apply_filters( 'automatic_updates_is_vcs_checkout', $checkout, $context );
-       }
-
-       /**
-        * Tests to see if we can and should update a specific item.
-        *
-        * @since 3.7.0
-        * @access public
-        *
-        * @global wpdb $wpdb WordPress database abstraction object.
-        *
-        * @param string $type    The type of update being checked: 'core', 'theme',
-        *                        'plugin', 'translation'.
-        * @param object $item    The update offer.
-        * @param string $context The filesystem context (a path) against which filesystem
-        *                        access and status should be checked.
-        */
-       public function should_update( $type, $item, $context ) {
-               // Used to see if WP_Filesystem is set up to allow unattended updates.
-               $skin = new Automatic_Upgrader_Skin;
-
-               if ( $this->is_disabled() )
-                       return false;
-
-               // Only relax the filesystem checks when the update doesn't include new files
-               $allow_relaxed_file_ownership = false;
-               if ( 'core' == $type && isset( $item->new_files ) && ! $item->new_files ) {
-                       $allow_relaxed_file_ownership = true;
-               }
-
-               // If we can't do an auto core update, we may still be able to email the user.
-               if ( ! $skin->request_filesystem_credentials( false, $context, $allow_relaxed_file_ownership ) || $this->is_vcs_checkout( $context ) ) {
-                       if ( 'core' == $type )
-                               $this->send_core_update_notification_email( $item );
-                       return false;
-               }
-
-               // Next up, is this an item we can update?
-               if ( 'core' == $type )
-                       $update = Core_Upgrader::should_update_to_version( $item->current );
-               else
-                       $update = ! empty( $item->autoupdate );
-
-               /**
-                * Filters whether to automatically update core, a plugin, a theme, or a language.
-                *
-                * The dynamic portion of the hook name, `$type`, refers to the type of update
-                * being checked. Can be 'core', 'theme', 'plugin', or 'translation'.
-                *
-                * Generally speaking, plugins, themes, and major core versions are not updated
-                * by default, while translations and minor and development versions for core
-                * are updated by default.
-                *
-                * See the {@see 'allow_dev_auto_core_updates', {@see 'allow_minor_auto_core_updates'},
-                * and {@see 'allow_major_auto_core_updates'} filters for a more straightforward way to
-                * adjust core updates.
-                *
-                * @since 3.7.0
-                *
-                * @param bool   $update Whether to update.
-                * @param object $item   The update offer.
-                */
-               $update = apply_filters( 'auto_update_' . $type, $update, $item );
-
-               if ( ! $update ) {
-                       if ( 'core' == $type )
-                               $this->send_core_update_notification_email( $item );
-                       return false;
-               }
-
-               // If it's a core update, are we actually compatible with its requirements?
-               if ( 'core' == $type ) {
-                       global $wpdb;
-
-                       $php_compat = version_compare( phpversion(), $item->php_version, '>=' );
-                       if ( file_exists( WP_CONTENT_DIR . '/db.php' ) && empty( $wpdb->is_mysql ) )
-                               $mysql_compat = true;
-                       else
-                               $mysql_compat = version_compare( $wpdb->db_version(), $item->mysql_version, '>=' );
-
-                       if ( ! $php_compat || ! $mysql_compat )
-                               return false;
-               }
-
-               return true;
-       }
-
-       /**
-        * Notifies an administrator of a core update.
-        *
-        * @since 3.7.0
-        * @access protected
-        *
-        * @param object $item The update offer.
-        */
-       protected function send_core_update_notification_email( $item ) {
-               $notified = get_site_option( 'auto_core_update_notified' );
-
-               // Don't notify if we've already notified the same email address of the same version.
-               if ( $notified && $notified['email'] == get_site_option( 'admin_email' ) && $notified['version'] == $item->current )
-                       return false;
-
-               // See if we need to notify users of a core update.
-               $notify = ! empty( $item->notify_email );
-
-               /**
-                * Filters whether to notify the site administrator of a new core update.
-                *
-                * By default, administrators are notified when the update offer received
-                * from WordPress.org sets a particular flag. This allows some discretion
-                * in if and when to notify.
-                *
-                * This filter is only evaluated once per release. If the same email address
-                * was already notified of the same new version, WordPress won't repeatedly
-                * email the administrator.
-                *
-                * This filter is also used on about.php to check if a plugin has disabled
-                * these notifications.
-                *
-                * @since 3.7.0
-                *
-                * @param bool   $notify Whether the site administrator is notified.
-                * @param object $item   The update offer.
-                */
-               if ( ! apply_filters( 'send_core_update_notification_email', $notify, $item ) )
-                       return false;
-
-               $this->send_email( 'manual', $item );
-               return true;
-       }
-
-       /**
-        * Update an item, if appropriate.
-        *
-        * @since 3.7.0
-        * @access public
-        *
-        * @param string $type The type of update being checked: 'core', 'theme', 'plugin', 'translation'.
-        * @param object $item The update offer.
-        *
-        * @return null|WP_Error
-        */
-       public function update( $type, $item ) {
-               $skin = new Automatic_Upgrader_Skin;
-
-               switch ( $type ) {
-                       case 'core':
-                               // The Core upgrader doesn't use the Upgrader's skin during the actual main part of the upgrade, instead, firing a filter.
-                               add_filter( 'update_feedback', array( $skin, 'feedback' ) );
-                               $upgrader = new Core_Upgrader( $skin );
-                               $context  = ABSPATH;
-                               break;
-                       case 'plugin':
-                               $upgrader = new Plugin_Upgrader( $skin );
-                               $context  = WP_PLUGIN_DIR; // We don't support custom Plugin directories, or updates for WPMU_PLUGIN_DIR
-                               break;
-                       case 'theme':
-                               $upgrader = new Theme_Upgrader( $skin );
-                               $context  = get_theme_root( $item->theme );
-                               break;
-                       case 'translation':
-                               $upgrader = new Language_Pack_Upgrader( $skin );
-                               $context  = WP_CONTENT_DIR; // WP_LANG_DIR;
-                               break;
-               }
-
-               // Determine whether we can and should perform this update.
-               if ( ! $this->should_update( $type, $item, $context ) )
-                       return false;
-
-               /**
-                * Fires immediately prior to an auto-update.
-                *
-                * @since 4.4.0
-                *
-                * @param string $type    The type of update being checked: 'core', 'theme', 'plugin', or 'translation'.
-                * @param object $item    The update offer.
-                * @param string $context The filesystem context (a path) against which filesystem access and status
-                *                        should be checked.
-                */
-               do_action( 'pre_auto_update', $type, $item, $context );
-
-               $upgrader_item = $item;
-               switch ( $type ) {
-                       case 'core':
-                               $skin->feedback( __( 'Updating to WordPress %s' ), $item->version );
-                               $item_name = sprintf( __( 'WordPress %s' ), $item->version );
-                               break;
-                       case 'theme':
-                               $upgrader_item = $item->theme;
-                               $theme = wp_get_theme( $upgrader_item );
-                               $item_name = $theme->Get( 'Name' );
-                               $skin->feedback( __( 'Updating theme: %s' ), $item_name );
-                               break;
-                       case 'plugin':
-                               $upgrader_item = $item->plugin;
-                               $plugin_data = get_plugin_data( $context . '/' . $upgrader_item );
-                               $item_name = $plugin_data['Name'];
-                               $skin->feedback( __( 'Updating plugin: %s' ), $item_name );
-                               break;
-                       case 'translation':
-                               $language_item_name = $upgrader->get_name_for_update( $item );
-                               $item_name = sprintf( __( 'Translations for %s' ), $language_item_name );
-                               $skin->feedback( sprintf( __( 'Updating translations for %1$s (%2$s)&#8230;' ), $language_item_name, $item->language ) );
-                               break;
-               }
-
-               $allow_relaxed_file_ownership = false;
-               if ( 'core' == $type && isset( $item->new_files ) && ! $item->new_files ) {
-                       $allow_relaxed_file_ownership = true;
-               }
-
-               // Boom, This sites about to get a whole new splash of paint!
-               $upgrade_result = $upgrader->upgrade( $upgrader_item, array(
-                       'clear_update_cache' => false,
-                       // Always use partial builds if possible for core updates.
-                       'pre_check_md5'      => false,
-                       // Only available for core updates.
-                       'attempt_rollback'   => true,
-                       // Allow relaxed file ownership in some scenarios
-                       'allow_relaxed_file_ownership' => $allow_relaxed_file_ownership,
-               ) );
-
-               // If the filesystem is unavailable, false is returned.
-               if ( false === $upgrade_result ) {
-                       $upgrade_result = new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) );
-               }
-
-               if ( 'core' == $type ) {
-                       if ( is_wp_error( $upgrade_result ) && ( 'up_to_date' == $upgrade_result->get_error_code() || 'locked' == $upgrade_result->get_error_code() ) ) {
-                               // These aren't actual errors, treat it as a skipped-update instead to avoid triggering the post-core update failure routines.
-                               return false;
-                       }
-
-                       // Core doesn't output this, so let's append it so we don't get confused.
-                       if ( is_wp_error( $upgrade_result ) ) {
-                               $skin->error( __( 'Installation Failed' ), $upgrade_result );
-                       } else {
-                               $skin->feedback( __( 'WordPress updated successfully' ) );
-                       }
-               }
-
-               $this->update_results[ $type ][] = (object) array(
-                       'item'     => $item,
-                       'result'   => $upgrade_result,
-                       'name'     => $item_name,
-                       'messages' => $skin->get_upgrade_messages()
-               );
-
-               return $upgrade_result;
-       }
-
-       /**
-        * Kicks off the background update process, looping through all pending updates.
-        *
-        * @since 3.7.0
-        * @access public
-        *
-        * @global wpdb   $wpdb
-        * @global string $wp_version
-        */
-       public function run() {
-               global $wpdb, $wp_version;
-
-               if ( $this->is_disabled() )
-                       return;
-
-               if ( ! is_main_network() || ! is_main_site() )
-                       return;
-
-               if ( ! WP_Upgrader::create_lock( 'auto_updater' ) )
-                       return;
-
-               // Don't automatically run these thins, as we'll handle it ourselves
-               remove_action( 'upgrader_process_complete', array( 'Language_Pack_Upgrader', 'async_upgrade' ), 20 );
-               remove_action( 'upgrader_process_complete', 'wp_version_check' );
-               remove_action( 'upgrader_process_complete', 'wp_update_plugins' );
-               remove_action( 'upgrader_process_complete', 'wp_update_themes' );
-
-               // Next, Plugins
-               wp_update_plugins(); // Check for Plugin updates
-               $plugin_updates = get_site_transient( 'update_plugins' );
-               if ( $plugin_updates && !empty( $plugin_updates->response ) ) {
-                       foreach ( $plugin_updates->response as $plugin ) {
-                               $this->update( 'plugin', $plugin );
-                       }
-                       // Force refresh of plugin update information
-                       wp_clean_plugins_cache();
-               }
-
-               // Next, those themes we all love
-               wp_update_themes();  // Check for Theme updates
-               $theme_updates = get_site_transient( 'update_themes' );
-               if ( $theme_updates && !empty( $theme_updates->response ) ) {
-                       foreach ( $theme_updates->response as $theme ) {
-                               $this->update( 'theme', (object) $theme );
-                       }
-                       // Force refresh of theme update information
-                       wp_clean_themes_cache();
-               }
-
-               // Next, Process any core update
-               wp_version_check(); // Check for Core updates
-               $core_update = find_core_auto_update();
-
-               if ( $core_update )
-                       $this->update( 'core', $core_update );
-
-               // Clean up, and check for any pending translations
-               // (Core_Upgrader checks for core updates)
-               $theme_stats = array();
-               if ( isset( $this->update_results['theme'] ) ) {
-                       foreach ( $this->update_results['theme'] as $upgrade ) {
-                               $theme_stats[ $upgrade->item->theme ] = ( true === $upgrade->result );
-                       }
-               }
-               wp_update_themes( $theme_stats );  // Check for Theme updates
-
-               $plugin_stats = array();
-               if ( isset( $this->update_results['plugin'] ) ) {
-                       foreach ( $this->update_results['plugin'] as $upgrade ) {
-                               $plugin_stats[ $upgrade->item->plugin ] = ( true === $upgrade->result );
-                       }
-               }
-               wp_update_plugins( $plugin_stats ); // Check for Plugin updates
-
-               // Finally, Process any new translations
-               $language_updates = wp_get_translation_updates();
-               if ( $language_updates ) {
-                       foreach ( $language_updates as $update ) {
-                               $this->update( 'translation', $update );
-                       }
-
-                       // Clear existing caches
-                       wp_clean_update_cache();
-
-                       wp_version_check();  // check for Core updates
-                       wp_update_themes();  // Check for Theme updates
-                       wp_update_plugins(); // Check for Plugin updates
-               }
-
-               // Send debugging email to all development installs.
-               if ( ! empty( $this->update_results ) ) {
-                       $development_version = false !== strpos( $wp_version, '-' );
-
-                       /**
-                        * Filters whether to send a debugging email for each automatic background update.
-                        *
-                        * @since 3.7.0
-                        *
-                        * @param bool $development_version By default, emails are sent if the
-                        *                                  install is a development version.
-                        *                                  Return false to avoid the email.
-                        */
-                       if ( apply_filters( 'automatic_updates_send_debug_email', $development_version ) )
-                               $this->send_debug_email();
-
-                       if ( ! empty( $this->update_results['core'] ) )
-                               $this->after_core_update( $this->update_results['core'][0] );
-
-                       /**
-                        * Fires after all automatic updates have run.
-                        *
-                        * @since 3.8.0
-                        *
-                        * @param array $update_results The results of all attempted updates.
-                        */
-                       do_action( 'automatic_updates_complete', $this->update_results );
-               }
-
-               WP_Upgrader::release_lock( 'auto_updater' );
-       }
-
-       /**
-        * If we tried to perform a core update, check if we should send an email,
-        * and if we need to avoid processing future updates.
-        *
-        * @since Unknown
-        * @access protected
-        *
-        * @global string $wp_version
-        *
-        * @param object $update_result The result of the core update. Includes the update offer and result.
-        */
-       protected function after_core_update( $update_result ) {
-               global $wp_version;
-
-               $core_update = $update_result->item;
-               $result      = $update_result->result;
-
-               if ( ! is_wp_error( $result ) ) {
-                       $this->send_email( 'success', $core_update );
-                       return;
-               }
-
-               $error_code = $result->get_error_code();
-
-               // Any of these WP_Error codes are critical failures, as in they occurred after we started to copy core files.
-               // We should not try to perform a background update again until there is a successful one-click update performed by the user.
-               $critical = false;
-               if ( $error_code === 'disk_full' || false !== strpos( $error_code, '__copy_dir' ) ) {
-                       $critical = true;
-               } elseif ( $error_code === 'rollback_was_required' && is_wp_error( $result->get_error_data()->rollback ) ) {
-                       // A rollback is only critical if it failed too.
-                       $critical = true;
-                       $rollback_result = $result->get_error_data()->rollback;
-               } elseif ( false !== strpos( $error_code, 'do_rollback' ) ) {
-                       $critical = true;
-               }
-
-               if ( $critical ) {
-                       $critical_data = array(
-                               'attempted'  => $core_update->current,
-                               'current'    => $wp_version,
-                               'error_code' => $error_code,
-                               'error_data' => $result->get_error_data(),
-                               'timestamp'  => time(),
-                               'critical'   => true,
-                       );
-                       if ( isset( $rollback_result ) ) {
-                               $critical_data['rollback_code'] = $rollback_result->get_error_code();
-                               $critical_data['rollback_data'] = $rollback_result->get_error_data();
-                       }
-                       update_site_option( 'auto_core_update_failed', $critical_data );
-                       $this->send_email( 'critical', $core_update, $result );
-                       return;
-               }
-
-               /*
-                * Any other WP_Error code (like download_failed or files_not_writable) occurs before
-                * we tried to copy over core files. Thus, the failures are early and graceful.
-                *
-                * We should avoid trying to perform a background update again for the same version.
-                * But we can try again if another version is released.
-                *
-                * For certain 'transient' failures, like download_failed, we should allow retries.
-                * In fact, let's schedule a special update for an hour from now. (It's possible
-                * the issue could actually be on WordPress.org's side.) If that one fails, then email.
-                */
-               $send = true;
-               $transient_failures = array( 'incompatible_archive', 'download_failed', 'insane_distro', 'locked' );
-               if ( in_array( $error_code, $transient_failures ) && ! get_site_option( 'auto_core_update_failed' ) ) {
-                       wp_schedule_single_event( time() + HOUR_IN_SECONDS, 'wp_maybe_auto_update' );
-                       $send = false;
-               }
-
-               $n = get_site_option( 'auto_core_update_notified' );
-               // Don't notify if we've already notified the same email address of the same version of the same notification type.
-               if ( $n && 'fail' == $n['type'] && $n['email'] == get_site_option( 'admin_email' ) && $n['version'] == $core_update->current )
-                       $send = false;
-
-               update_site_option( 'auto_core_update_failed', array(
-                       'attempted'  => $core_update->current,
-                       'current'    => $wp_version,
-                       'error_code' => $error_code,
-                       'error_data' => $result->get_error_data(),
-                       'timestamp'  => time(),
-                       'retry'      => in_array( $error_code, $transient_failures ),
-               ) );
-
-               if ( $send )
-                       $this->send_email( 'fail', $core_update, $result );
-       }
-
-       /**
-        * Sends an email upon the completion or failure of a background core update.
-        *
-        * @since 3.7.0
-        * @access protected
-        *
-        * @global string $wp_version
-        *
-        * @param string $type        The type of email to send. Can be one of 'success', 'fail', 'manual', 'critical'.
-        * @param object $core_update The update offer that was attempted.
-        * @param mixed  $result      Optional. The result for the core update. Can be WP_Error.
-        */
-       protected function send_email( $type, $core_update, $result = null ) {
-               update_site_option( 'auto_core_update_notified', array(
-                       'type'      => $type,
-                       'email'     => get_site_option( 'admin_email' ),
-                       'version'   => $core_update->current,
-                       'timestamp' => time(),
-               ) );
-
-               $next_user_core_update = get_preferred_from_update_core();
-               // If the update transient is empty, use the update we just performed
-               if ( ! $next_user_core_update )
-                       $next_user_core_update = $core_update;
-               $newer_version_available = ( 'upgrade' == $next_user_core_update->response && version_compare( $next_user_core_update->version, $core_update->version, '>' ) );
-
-               /**
-                * Filters whether to send an email following an automatic background core update.
-                *
-                * @since 3.7.0
-                *
-                * @param bool   $send        Whether to send the email. Default true.
-                * @param string $type        The type of email to send. Can be one of
-                *                            'success', 'fail', 'critical'.
-                * @param object $core_update The update offer that was attempted.
-                * @param mixed  $result      The result for the core update. Can be WP_Error.
-                */
-               if ( 'manual' !== $type && ! apply_filters( 'auto_core_update_send_email', true, $type, $core_update, $result ) )
-                       return;
-
-               switch ( $type ) {
-                       case 'success' : // We updated.
-                               /* translators: 1: Site name, 2: WordPress version number. */
-                               $subject = __( '[%1$s] Your site has updated to WordPress %2$s' );
-                               break;
-
-                       case 'fail' :   // We tried to update but couldn't.
-                       case 'manual' : // We can't update (and made no attempt).
-                               /* translators: 1: Site name, 2: WordPress version number. */
-                               $subject = __( '[%1$s] WordPress %2$s is available. Please update!' );
-                               break;
-
-                       case 'critical' : // We tried to update, started to copy files, then things went wrong.
-                               /* translators: 1: Site name. */
-                               $subject = __( '[%1$s] URGENT: Your site may be down due to a failed update' );
-                               break;
-
-                       default :
-                               return;
-               }
-
-               // If the auto update is not to the latest version, say that the current version of WP is available instead.
-               $version = 'success' === $type ? $core_update->current : $next_user_core_update->current;
-               $subject = sprintf( $subject, wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ), $version );
-
-               $body = '';
-
-               switch ( $type ) {
-                       case 'success' :
-                               $body .= sprintf( __( 'Howdy! Your site at %1$s has been updated automatically to WordPress %2$s.' ), home_url(), $core_update->current );
-                               $body .= "\n\n";
-                               if ( ! $newer_version_available )
-                                       $body .= __( 'No further action is needed on your part.' ) . ' ';
-
-                               // Can only reference the About screen if their update was successful.
-                               list( $about_version ) = explode( '-', $core_update->current, 2 );
-                               $body .= sprintf( __( "For more on version %s, see the About WordPress screen:" ), $about_version );
-                               $body .= "\n" . admin_url( 'about.php' );
-
-                               if ( $newer_version_available ) {
-                                       $body .= "\n\n" . sprintf( __( 'WordPress %s is also now available.' ), $next_user_core_update->current ) . ' ';
-                                       $body .= __( 'Updating is easy and only takes a few moments:' );
-                                       $body .= "\n" . network_admin_url( 'update-core.php' );
-                               }
-
-                               break;
-
-                       case 'fail' :
-                       case 'manual' :
-                               $body .= sprintf( __( 'Please update your site at %1$s to WordPress %2$s.' ), home_url(), $next_user_core_update->current );
-
-                               $body .= "\n\n";
-
-                               // Don't show this message if there is a newer version available.
-                               // Potential for confusion, and also not useful for them to know at this point.
-                               if ( 'fail' == $type && ! $newer_version_available )
-                                       $body .= __( 'We tried but were unable to update your site automatically.' ) . ' ';
-
-                               $body .= __( 'Updating is easy and only takes a few moments:' );
-                               $body .= "\n" . network_admin_url( 'update-core.php' );
-                               break;
-
-                       case 'critical' :
-                               if ( $newer_version_available )
-                                       $body .= sprintf( __( 'Your site at %1$s experienced a critical failure while trying to update WordPress to version %2$s.' ), home_url(), $core_update->current );
-                               else
-                                       $body .= sprintf( __( 'Your site at %1$s experienced a critical failure while trying to update to the latest version of WordPress, %2$s.' ), home_url(), $core_update->current );
-
-                               $body .= "\n\n" . __( "This means your site may be offline or broken. Don't panic; this can be fixed." );
-
-                               $body .= "\n\n" . __( "Please check out your site now. It's possible that everything is working. If it says you need to update, you should do so:" );
-                               $body .= "\n" . network_admin_url( 'update-core.php' );
-                               break;
-               }
-
-               $critical_support = 'critical' === $type && ! empty( $core_update->support_email );
-               if ( $critical_support ) {
-                       // Support offer if available.
-                       $body .= "\n\n" . sprintf( __( "The WordPress team is willing to help you. Forward this email to %s and the team will work with you to make sure your site is working." ), $core_update->support_email );
-               } else {
-                       // Add a note about the support forums.
-                       $body .= "\n\n" . __( 'If you experience any issues or need support, the volunteers in the WordPress.org support forums may be able to help.' );
-                       $body .= "\n" . __( 'https://wordpress.org/support/' );
-               }
-
-               // Updates are important!
-               if ( $type != 'success' || $newer_version_available ) {
-                       $body .= "\n\n" . __( 'Keeping your site updated is important for security. It also makes the internet a safer place for you and your readers.' );
-               }
-
-               if ( $critical_support ) {
-                       $body .= " " . __( "If you reach out to us, we'll also ensure you'll never have this problem again." );
-               }
-
-               // If things are successful and we're now on the latest, mention plugins and themes if any are out of date.
-               if ( $type == 'success' && ! $newer_version_available && ( get_plugin_updates() || get_theme_updates() ) ) {
-                       $body .= "\n\n" . __( 'You also have some plugins or themes with updates available. Update them now:' );
-                       $body .= "\n" . network_admin_url();
-               }
-
-               $body .= "\n\n" . __( 'The WordPress Team' ) . "\n";
-
-               if ( 'critical' == $type && is_wp_error( $result ) ) {
-                       $body .= "\n***\n\n";
-                       $body .= sprintf( __( 'Your site was running version %s.' ), $GLOBALS['wp_version'] );
-                       $body .= ' ' . __( 'We have some data that describes the error your site encountered.' );
-                       $body .= ' ' . __( 'Your hosting company, support forum volunteers, or a friendly developer may be able to use this information to help you:' );
-
-                       // If we had a rollback and we're still critical, then the rollback failed too.
-                       // Loop through all errors (the main WP_Error, the update result, the rollback result) for code, data, etc.
-                       if ( 'rollback_was_required' == $result->get_error_code() )
-                               $errors = array( $result, $result->get_error_data()->update, $result->get_error_data()->rollback );
-                       else
-                               $errors = array( $result );
-
-                       foreach ( $errors as $error ) {
-                               if ( ! is_wp_error( $error ) )
-                                       continue;
-                               $error_code = $error->get_error_code();
-                               $body .= "\n\n" . sprintf( __( "Error code: %s" ), $error_code );
-                               if ( 'rollback_was_required' == $error_code )
-                                       continue;
-                               if ( $error->get_error_message() )
-                                       $body .= "\n" . $error->get_error_message();
-                               $error_data = $error->get_error_data();
-                               if ( $error_data )
-                                       $body .= "\n" . implode( ', ', (array) $error_data );
-                       }
-                       $body .= "\n";
-               }
-
-               $to  = get_site_option( 'admin_email' );
-               $headers = '';
-
-               $email = compact( 'to', 'subject', 'body', 'headers' );
-
-               /**
-                * Filters the email sent following an automatic background core update.
-                *
-                * @since 3.7.0
-                *
-                * @param array $email {
-                *     Array of email arguments that will be passed to wp_mail().
-                *
-                *     @type string $to      The email recipient. An array of emails
-                *                            can be returned, as handled by wp_mail().
-                *     @type string $subject The email's subject.
-                *     @type string $body    The email message body.
-                *     @type string $headers Any email headers, defaults to no headers.
-                * }
-                * @param string $type        The type of email being sent. Can be one of
-                *                            'success', 'fail', 'manual', 'critical'.
-                * @param object $core_update The update offer that was attempted.
-                * @param mixed  $result      The result for the core update. Can be WP_Error.
-                */
-               $email = apply_filters( 'auto_core_update_email', $email, $type, $core_update, $result );
-
-               wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] );
-       }
-
-       /**
-        * Prepares and sends an email of a full log of background update results, useful for debugging and geekery.
-        *
-        * @since 3.7.0
-        * @access protected
-        */
-       protected function send_debug_email() {
-               $update_count = 0;
-               foreach ( $this->update_results as $type => $updates )
-                       $update_count += count( $updates );
-
-               $body = array();
-               $failures = 0;
-
-               $body[] = sprintf( __( 'WordPress site: %s' ), network_home_url( '/' ) );
-
-               // Core
-               if ( isset( $this->update_results['core'] ) ) {
-                       $result = $this->update_results['core'][0];
-                       if ( $result->result && ! is_wp_error( $result->result ) ) {
-                               $body[] = sprintf( __( 'SUCCESS: WordPress was successfully updated to %s' ), $result->name );
-                       } else {
-                               $body[] = sprintf( __( 'FAILED: WordPress failed to update to %s' ), $result->name );
-                               $failures++;
-                       }
-                       $body[] = '';
-               }
-
-               // Plugins, Themes, Translations
-               foreach ( array( 'plugin', 'theme', 'translation' ) as $type ) {
-                       if ( ! isset( $this->update_results[ $type ] ) )
-                               continue;
-                       $success_items = wp_list_filter( $this->update_results[ $type ], array( 'result' => true ) );
-                       if ( $success_items ) {
-                               $messages = array(
-                                       'plugin'      => __( 'The following plugins were successfully updated:' ),
-                                       'theme'       => __( 'The following themes were successfully updated:' ),
-                                       'translation' => __( 'The following translations were successfully updated:' ),
-                               );
-
-                               $body[] = $messages[ $type ];
-                               foreach ( wp_list_pluck( $success_items, 'name' ) as $name ) {
-                                       $body[] = ' * ' . sprintf( __( 'SUCCESS: %s' ), $name );
-                               }
-                       }
-                       if ( $success_items != $this->update_results[ $type ] ) {
-                               // Failed updates
-                               $messages = array(
-                                       'plugin'      => __( 'The following plugins failed to update:' ),
-                                       'theme'       => __( 'The following themes failed to update:' ),
-                                       'translation' => __( 'The following translations failed to update:' ),
-                               );
-
-                               $body[] = $messages[ $type ];
-                               foreach ( $this->update_results[ $type ] as $item ) {
-                                       if ( ! $item->result || is_wp_error( $item->result ) ) {
-                                               $body[] = ' * ' . sprintf( __( 'FAILED: %s' ), $item->name );
-                                               $failures++;
-                                       }
-                               }
-                       }
-                       $body[] = '';
-               }
-
-               $site_title = wp_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES );
-               if ( $failures ) {
-                       $body[] = trim( __(
-"BETA TESTING?
-=============
-
-This debugging email is sent when you are using a development version of WordPress.
-
-If you think these failures might be due to a bug in WordPress, could you report it?
- * Open a thread in the support forums: https://wordpress.org/support/forum/alphabeta
- * Or, if you're comfortable writing a bug report: https://core.trac.wordpress.org/
-
-Thanks! -- The WordPress Team" ) );
-                       $body[] = '';
-
-                       $subject = sprintf( __( '[%s] There were failures during background updates' ), $site_title );
-               } else {
-                       $subject = sprintf( __( '[%s] Background updates have finished' ), $site_title );
-               }
-
-               $body[] = trim( __(
-'UPDATE LOG
-==========' ) );
-               $body[] = '';
-
-               foreach ( array( 'core', 'plugin', 'theme', 'translation' ) as $type ) {
-                       if ( ! isset( $this->update_results[ $type ] ) )
-                               continue;
-                       foreach ( $this->update_results[ $type ] as $update ) {
-                               $body[] = $update->name;
-                               $body[] = str_repeat( '-', strlen( $update->name ) );
-                               foreach ( $update->messages as $message )
-                                       $body[] = "  " . html_entity_decode( str_replace( '&#8230;', '...', $message ) );
-                               if ( is_wp_error( $update->result ) ) {
-                                       $results = array( 'update' => $update->result );
-                                       // If we rolled back, we want to know an error that occurred then too.
-                                       if ( 'rollback_was_required' === $update->result->get_error_code() )
-                                               $results = (array) $update->result->get_error_data();
-                                       foreach ( $results as $result_type => $result ) {
-                                               if ( ! is_wp_error( $result ) )
-                                                       continue;
-
-                                               if ( 'rollback' === $result_type ) {
-                                                       /* translators: 1: Error code, 2: Error message. */
-                                                       $body[] = '  ' . sprintf( __( 'Rollback Error: [%1$s] %2$s' ), $result->get_error_code(), $result->get_error_message() );
-                                               } else {
-                                                       /* translators: 1: Error code, 2: Error message. */
-                                                       $body[] = '  ' . sprintf( __( 'Error: [%1$s] %2$s' ), $result->get_error_code(), $result->get_error_message() );
-                                               }
-
-                                               if ( $result->get_error_data() )
-                                                       $body[] = '         ' . implode( ', ', (array) $result->get_error_data() );
-                                       }
-                               }
-                               $body[] = '';
-                       }
-               }
-
-               $email = array(
-                       'to'      => get_site_option( 'admin_email' ),
-                       'subject' => $subject,
-                       'body'    => implode( "\n", $body ),
-                       'headers' => ''
-               );
-
-               /**
-                * Filters the debug email that can be sent following an automatic
-                * background core update.
-                *
-                * @since 3.8.0
-                *
-                * @param array $email {
-                *     Array of email arguments that will be passed to wp_mail().
-                *
-                *     @type string $to      The email recipient. An array of emails
-                *                           can be returned, as handled by wp_mail().
-                *     @type string $subject Email subject.
-                *     @type string $body    Email message body.
-                *     @type string $headers Any email headers. Default empty.
-                * }
-                * @param int   $failures The number of failures encountered while upgrading.
-                * @param mixed $results  The results of all attempted updates.
-                */
-               $email = apply_filters( 'automatic_updates_debug_email', $email, $failures, $this->update_results );
-
-               wp_mail( $email['to'], wp_specialchars_decode( $email['subject'] ), $email['body'], $email['headers'] );
-       }
-}
</del></span></pre></div>
<a id="trunksrcwpadminincludesclasswpupgraderphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/class-wp-upgrader.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/class-wp-upgrader.php 2016-08-10 19:05:02 UTC (rev 38241)
+++ trunk/src/wp-admin/includes/class-wp-upgrader.php   2016-08-10 19:50:18 UTC (rev 38242)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -903,5 +903,5 @@
</span><span class="cx" style="display: block; padding: 0 10px"> /** File_Upload_Upgrader class */
</span><span class="cx" style="display: block; padding: 0 10px"> require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php';
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/** WP_Automatic_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-upgrader.php';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/** WP_Automatic_Updater class */
+require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
</ins></span></pre></div>
<a id="trunksrcwpadminincludesupdatecorephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/update-core.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/update-core.php       2016-08-10 19:05:02 UTC (rev 38241)
+++ trunk/src/wp-admin/includes/update-core.php 2016-08-10 19:50:18 UTC (rev 38242)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -703,6 +703,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'wp-includes/js/tinymce/plugins/wpfullscreen',
</span><span class="cx" style="display: block; padding: 0 10px"> // 4.5
</span><span class="cx" style="display: block; padding: 0 10px"> 'wp-includes/theme-compat/comments-popup.php',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+// 4.6
+'wp-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628.
</ins><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span></span></pre>
</div>
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