<!DOCTYPE HTML>
<html>
<head>
<style type="text/css">
@font-face {
  font-family: test;
  src: url(../fonts/graphite/grtest-langfeat.ttf);
}

body {
  margin: 20px;
  font: 100px test;
  font-feature-settings: "TST1";
}
p { margin: 0; padding: 0; }
</style>
</head>
<body>
<p lang="fr">FAIL</p>
</body>
</html>