chromium/third_party/blink/web_tests/editing/text-iterator/first_letter_find_string_crash.html

<!doctype html>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<style>
font {
  -webkit-appearance: progress-bar;
}

:first-letter {
  color:black
}

* {
  -webkit-rtl-ordering: visual;
  margin-inline-end: -1px
}
</style>
<font dir="rtl">iC <q></q></font>
<script>
// Regression test for crbug.com/752941
// TODO(editing-dev): Convert it to unit test once crbug.com/754012 is fixed.
test(() => {
  window.find('C');
}, 'Should not crash in finding string');
</script>