Ticket #27754: 27754.5.patch

src/wp-admin/includes/class-wp-upgrader.php

@@ -539 +539 @@
 
                 $options = wp_parse_args( $options, $defaults );
 
+                /**
+                 * Filter the package options before running an update.
+                 *
+                 * @since 4.3.0
+                 *
+                 * @param array $options {
+                 *     Options used by the upgrader.
+                 *
+                 *     @type string $package                     Package for update.
+                 *     @type string $destination                 Update location.
+                 *     @type bool   $clear_destination           Clear the destination resource.
+                 *     @type bool   $clear_working               Clear the working resource.
+                 *     @type bool   $abort_if_destination_exists Abort if the Destination directory exists.
+                 *     @type bool   $is_multi                    Whether the upgrader is running multiple times.
+                 *     @type array  $hook_extra                  Extra hook arguments.
+                 * }
+                 */
+                $options = apply_filters( 'upgrader_package_options', $options );
+
                 if ( ! $options['is_multi'] ) { // call $this->header separately if running multiple times
                         $this->skin->header();
                 }