twig

When I started making sites with Drupal 8 I missed a special body class that I sometime need for theming as well as other times, and that's the language body class. When making multilingual sites this comes in handy sometimes. For Drupal 7 this was made possible by the Internationalization (i18n) module, but since that module has been moved into core in Drupal (source) that special body-class-adding-thingamajig seems to have vanished.