LayoutTests/editing/pasteboard/5480736.html - WebKit - Git at Google

 <html>
 <head>
 <style>
 blockquote {
     margin: 0px;
     padding-left: 20px;
     border-left: 1px solid black;
 }
 </style>
 </head>
 <body>
 <div id="description">This tests for a bug where copying a word in indented text and then pasting it into indented text would create an extraneous line break.  You should see "hello world" below, all in one indented paragraph.</div>
 <div id="edit" contentEditable="true"><blockquote id="blockquote" class="webkit-indent-blockquote">hd</blockquote></div>

 <script>
 if (window.testRunner)
     window.testRunner.dumpAsText();

 blockquote = document.getElementById("blockquote");
 text = blockquote.firstChild;

 window.getSelection().setPosition(text, 1);
 document.execCommand("InsertHTML", false, "ello worl");
 if (window.testRunner)
     document.body.innerText = document.getElementById("description").innerText + "\n" + document.getElementById("edit").innerHTML;
 </script>
 </body>
 </html>
	<html>
	<head>
	<style>
	blockquote {
	margin: 0px;
	padding-left: 20px;
	border-left: 1px solid black;
	}
	</style>
	</head>
	<body>
	<div id="description">This tests for a bug where copying a word in indented text and then pasting it into indented text would create an extraneous line break. You should see "hello world" below, all in one indented paragraph.</div>
	<div id="edit" contentEditable="true"><blockquote id="blockquote" class="webkit-indent-blockquote">hd</blockquote></div>

	<script>
	if (window.testRunner)
	window.testRunner.dumpAsText();

	blockquote = document.getElementById("blockquote");
	text = blockquote.firstChild;

	window.getSelection().setPosition(text, 1);
	document.execCommand("InsertHTML", false, "ello worl");
	if (window.testRunner)
	document.body.innerText = document.getElementById("description").innerText + "\n" + document.getElementById("edit").innerHTML;
	</script>
	</body>
	</html>