commit e75c91c8dce358dfe45ea6a5fb04d674e4ed85a1
Author: Joel Pittet <joel@pittet.ca>
Date:   Fri Sep 4 22:22:11 2015 -0700

    dial it down

diff --git a/core/lib/Drupal/Component/Utility/SafeMarkup.php b/core/lib/Drupal/Component/Utility/SafeMarkup.php
index 280de7a..0900d4c 100644
--- a/core/lib/Drupal/Component/Utility/SafeMarkup.php
+++ b/core/lib/Drupal/Component/Utility/SafeMarkup.php
@@ -224,7 +224,6 @@ public static function format($string, array $args) {
           // Escaped only.
           if (!SafeMarkup::isSafe($value)) {
             $args[$key] = Html::escape($value);
-            $safe = FALSE;
           }
           break;
 
@@ -233,7 +232,6 @@ public static function format($string, array $args) {
           // Escaped and placeholder.
           if (!SafeMarkup::isSafe($value)) {
             $value = Html::escape($value);
-            $safe = FALSE;
           }
           $args[$key] = '<em class="placeholder">' . $value . '</em>';
           break;