<script>
if (window.testRunner)
     testRunner.dumpEditingCallbacks();
</script>
<p>This tests for a bug in InsertLineBreakCommand.  Only one line break should be inserted and the caret should end up at the end of the bordered div below.</p><div contenteditable="true" id="div" style="white-space:pre; border: 1px solid black;">Hello world.

</div>

<script>
var sel = window.getSelection();
var div = document.getElementById("div");
sel.setPosition(div, 0);
sel.modify("move", "forward", "line");
document.execCommand("InsertLineBreak");
</script>