chromium/third_party/blink/web_tests/external/wpt/svg/text/reftests/first-letter.svg

<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
  <metadata>
    <h:title>first-letter should apply to SVG text</h:title>
    <h:link rel="help" href="https://www.w3.org/TR/SVG2/text.html#TextProperties"/>
    <h:link rel="match" href="first-letter-ref.svg"/>
    <h:link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
  </metadata>
  <style>
    text {
      font-family: Ahem;
      font-size: 50px;
    }
    text::first-letter {
      fill: green;
    }
  </style>
  <text x="100" y="100">
    <tspan>XXXX</tspan>
  </text>
</svg>