LayoutTests/editing/pasteboard/paste-before-tab-span.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <script src="../../resources/dump-as-markup.js"></script>
 </head>
 <body>
 <div contenteditable id="root" class="editing"><span id="test">hello<span class="Apple-tab-span" style="white-space:pre">		</span>world</span>
 </div>
 <script>

 if (window.testRunner)
     testRunner.dumpAsText();

 Markup.description("This test ensures pasting content before a tab span isn't pasted into the tab span.");
 var sel = window.getSelection();
 var testSpan = document.getElementById("test");
 sel.setBaseAndExtent(testSpan.firstChild, 0, testSpan.firstChild, 5);

 document.execCommand("copy");
 sel.setPosition(testSpan.firstChild, 5);
 document.execCommand("paste");
 if (window.eventSender)
     eventSender.keyDown("a");

 Markup.dump("root", "Result")
 </script>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<script src="../../resources/dump-as-markup.js"></script>
	</head>
	<body>
	<div contenteditable id="root" class="editing"><span id="test">hello<span class="Apple-tab-span" style="white-space:pre"> </span>world</span>
	</div>
	<script>

	if (window.testRunner)
	testRunner.dumpAsText();

	Markup.description("This test ensures pasting content before a tab span isn't pasted into the tab span.");
	var sel = window.getSelection();
	var testSpan = document.getElementById("test");
	sel.setBaseAndExtent(testSpan.firstChild, 0, testSpan.firstChild, 5);

	document.execCommand("copy");
	sel.setPosition(testSpan.firstChild, 5);
	document.execCommand("paste");
	if (window.eventSender)
	eventSender.keyDown("a");

	Markup.dump("root", "Result")
	</script>
	</body>
	</html>