<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://github.com/whatwg/html/pull/7991">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>

<script>
function isAsciiLowerAlpha(codePoint) {
  return codePoint >= 0x61 && codePoint <= 0x7A;
}
function isAsciiUpperAlpha(codePoint) {
  return codePoint >= 0x41 && codePoint <= 0x5A;
}
function isAsciiAlpha(codePoint) {
  return isAsciiLowerAlpha(codePoint)