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<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
<script>
function tweak() {
if (!document.body.createShadowRoot) {
document.documentElement.className = "";
return;
}
var host = document.getElementById("host");
var shadow = host.createShadowRoot();
var textNode = document.createTextNode(" World");
shadow.appendChild(textNode);
// Create a selection with focus preceeding anchor
var selection = window.getSelection();
var range = document.createRange();
range.setStart(shadow, 1);
range.setEnd(shadow, 1);
selection.addRange(range);
selection.extend(shadow, 0);
// Extend selection into a different node tree
// (from ShadowRoot into the previous node in the parent node tree).
setTimeout(function() {
selection.extend(document.getElementById("previous"), 0);
document.documentElement.className = '';
}, 100);
}
</script>
</head>
<body onload="tweak()">
<span id="previous">Hello</span><span id="host"></span>
</body>
</html>
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