Ticket #22401: 22401.patch

wp-includes/default-filters.php

@@ -211 +211 @@
 add_action( 'wp_head',             'wp_shortlink_wp_head',            10, 0 );
 add_action( 'template_redirect',   'wp_shortlink_header',             11, 0 );
 add_action( 'wp_print_footer_scripts', '_wp_footer_scripts'                 );
-add_action( 'init',                'check_theme_switched',            99    );
+add_action( 'switch_theme',        'check_theme_switched',            99, 4 );
 add_action( 'after_switch_theme',  '_wp_sidebars_changed'                   );
 
 if ( isset( $_GET['replytocom'] ) )

wp-includes/theme.php

@@ -694 +694 @@
         }
 
         update_option( 'theme_switched', $old_theme->get_stylesheet() );
-        do_action( 'switch_theme', $new_name, $new_theme );
+        do_action( 'switch_theme', $new_name, $new_theme, $old_theme->get( 'Name' ), $old_theme );
 }
 
 /**
@@ -1599 +1599 @@
  *
  * @since 3.3.0
  */
-function check_theme_switched() {
-        if ( $stylesheet = get_option( 'theme_switched' ) ) {
-                $old_theme = wp_get_theme( $stylesheet );
-
+function check_theme_switched( $new_name, $new_theme, $old_name, $old_theme ) {
                 if ( $old_theme->exists() )
                         do_action( 'after_switch_theme', $old_theme->get('Name'), $old_theme );
                 else
-                        do_action( 'after_switch_theme', $stylesheet );
-
-                update_option( 'theme_switched', false );
-        }
+                        do_action( 'after_switch_theme', $old_name );
 }
 
 /**