1890899.html - mozsearch

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<html class="reftest-wait">

<script>

// This test ensures Firefox doesn't crash when there's a selection that crosses

// the shadow boundary, and the ancestor of the end boundary is

// later being removed from the DOM.

window.addEventListener("DOMContentLoaded", () => {

  try {

    let sel = window.getSelection()

    o3.select()

    o1.insertBefore(o4, o1.childNodes[0])

    sel.extend(o4.attachShadow({mode: "open"}))

  } catch (e) {}

  o2.outerHTML = undefined

  document.documentElement.removeAttribute("class");

})

</script>

<h2>

<content id="o1" contenteditable="true">

</h2>

<samp id="o2">

<input id="o3">

<h1 id="o4" hidden="">

</html>