LayoutTests/fast/parser/compatMode-in-xhtml.xhtml - WebKit - Git at Google

 <!DOCTYPE html>
 <html xmlns="http://www.w3.org/1999/xhtml">
  <head>
   <meta charset="utf-8" />
   <title>XHTML</title>
  </head>
  <body>
  <script>
     if (window.testRunner)
         testRunner.dumpAsText();
     alert(document.compatMode);
  </script>
  </body>
 </html>
	<!DOCTYPE html>
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<meta charset="utf-8" />
	<title>XHTML</title>
	</head>
	<body>
	<script>
	if (window.testRunner)
	testRunner.dumpAsText();
	alert(document.compatMode);
	</script>
	</body>
	</html>