don't remove temporary files in debug mode, so that we have a possibility to inspect them

Author: Raphaël Droz

Twig/Gettext/Extractor.php

@@ -97,6 +97,8 @@ public function extract()
     public function __destruct()
     {
         $filesystem = new Filesystem();
-        $filesystem->remove($this->environment->getCache());
+        if (! $this->environment->isDebug()) {
+            $filesystem->remove($this->environment->getCache());
+        }
     }
 }