<!DOCTYPE html>
<meta charset="utf-8">
<title>Test reference</title>
<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
<style>
div {
  font-size: 2em;
  border: solid black;
  margin: 5px;
  width: 30ch;
}
</style>

<p>Test passes if the two boxes below are identical.

<div lang=ja>東京‼&nbsp;へ‼&nbsp;行きましょう。</div>
<div lang=ja>東京‼&nbsp;へ‼&nbsp;行きましょう。</div>