Index: /CKEditor/tests/tt/4548/1.html
===================================================================
--- /CKEditor/tests/tt/4548/1.html	(revision 4385)
+++ /CKEditor/tests/tt/4548/1.html	(revision 4385)
@@ -0,0 +1,68 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+	"http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+	<title>Ticket: #4548</title>
+	<meta name="tags" content="editor,unit,stable">
+	<script type="text/javascript" src="../../cktester/cell.js"></script>
+	<script>
+( function()
+{
+	/**
+	 * IE always returning CRLF for linefeed, so remove it when retrieve pre-formated text from text area.
+	 * @param {Object} id
+	 */
+	function getTextAreaValue( id )
+	{
+		return CKEDITOR.document.getById( id ).getValue().replace(/\r/gi,'');
+	}
+
+	var ts, tc, assert = CKEDITOR.test.assert, doc = CKEDITOR.document;
+	YAHOO.tool.TestRunner.add( ts = new CKEDITOR.test.suites.editorTestSuite(
+		{
+				editorName : 'test_editor',
+				config :
+				{
+					extraPlugins : 'fakecomment',
+					fakeComments : [ /^break$/, 'html comment' ],
+					protectedSource : [ /<\?[\s\S]*?\?>/g ]
+				},
+				name :document.title
+		} ) );
+
+	ts.add( tc = new YAHOO.tool.TestCase(
+		{
+			/**
+			 * Test the 'fakecomment' plugin is working properly. 
+			 */
+			test_fakeComment : function()
+			{
+				var editor = ts.editor;
+				editor.setData( getTextAreaValue( 'editor_data_input' ) , function()
+				{
+					tc.resume( function()
+					{
+						assert.areEqual( getTextAreaValue( 'editor_data_output' ), editor.getData(), 'editor output data doesn\'t match.' );
+					} );
+				} );
+				tc.wait();
+			}
+		} ) );
+} )();
+	</script>
+</head>
+<body>
+<textarea id="editor_data_input">
+<?php include ("head.html"); ?>
+<p>paragraph1<!--break--></p>
+<p><!--html comment-->paragraph2</p>
+<!-- comment should not be faked -->
+</textarea>
+<textarea id="editor_data_output"><?php include ("head.html"); ?>
+<p>
+	paragraph1<!--break--></p>
+<p>
+	<!--html comment-->paragraph2</p>
+<!-- comment should not be faked --></textarea>
+</body>
+</html>
