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Test Info:

<!DOCTYPE html>
<html>
<head>
<title>Test for Bug 1361052</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script class="testbody" type="application/javascript">
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(() => {
var strike = document.createElement("strike");
strike.contentEditable = true;
document.documentElement.appendChild(strike);
var textarea = document.createElement("textarea");
document.documentElement.appendChild(textarea);
var h5 = document.createElement("h5");
strike.appendChild(h5);
textarea.setCustomValidity("A");
document.documentElement.dir = "rtl";
document.designMode = "on";
document.execCommand("styleWithCSS", false, true);
document.designMode = "off";
textarea.reportValidity();
document.documentElement.dir = "ltr";
var range = document.createRange();
range.selectNode(h5);
window.getSelection().addRange(range);
document.execCommand("inserthorizontalrule", false, null);
ok(true, "No crash");
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>