chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-painting-020.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: Highlighting Ligatures</title>
<link rel="author" title="Stephen Chenney" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="match" href="custom-highlight-painting-020-ref.html">
<meta name="assert" value="Highlights should split ligatures.">
<meta name="fuzzy" content="0-128;0-28">
<style>
  @font-face {
    font-family: 'mplus';
    src: url('../../../fonts/mplus-1p-regular.woff');
  }
  ::highlight(foo) {
    color:green;
    text-decoration: blue 2px line-through;
  }
  div {
      font-size: 7em;
      font-family: mplus, serif;
  }
</style>
<body><div>fii ffi fff</div>
<script>
  let textNode = document.body.firstChild.firstChild;

  let r1 = new Range();
  r1.setStart(textNode, 1);
  r1.setEnd(textNode, 9);
  let h1 = new Highlight(r1);
  CSS.highlights.set("foo", h1);
</script>