Ticket #27617: 27617.2.patch

src/wp-login.php

@@ -484 +484 @@
 
 case 'logout' :
         check_admin_referer('log-out');
+
+        $user = wp_get_current_user();
+
         wp_logout();
 
-        $redirect_to = !empty( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : 'wp-login.php?loggedout=true';
+        if ( ! empty( $_REQUEST['redirect_to'] ) ) {
+                $redirect_to = $requested_redirect_to = $_REQUEST['redirect_to'];
+        } else {
+                $redirect_to = 'wp-login.php?loggedout=true';
+                $requested_redirect_to = '';
+        }
+
+        /**
+         * Filter the log out redirect URL.
+         *
+         * @since 4.2.0
+         *
+         * @param string  $redirect_to           The redirect destination URL.
+         * @param string  $requested_redirect_to The requested redirect destination URL passed as a parameter.
+         * @param WP_User $user                  The WP_User object for the user that's logging out.
+         */
+        $redirect_to = apply_filters( 'logout_redirect', $redirect_to, $requested_redirect_to, $user );
         wp_safe_redirect( $redirect_to );
         exit();