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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=543428
+-->
+<head>
+ <title>Test for Bug 543428</title>
+ <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+ <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+ <style type="text/css" id="sheet">p { color: blue; }</style>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=543428">Mozilla Bug 543428</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 543428 **/
+
+var sheet = document.getElementById("sheet").sheet;
+var rule = sheet.cssRules[0];
+
+function set_selector_text(selector)
+ // no cssText or selectorText setter implemented yet
+{
+ try {
+ // insertRule might throw on syntax error
+ sheet.insertRule(selector + " { color : green }", 0);
+ sheet.deleteRule(1);
+ } catch(ex) {}
+ rule = sheet.cssRules[0];
+}
+
+is(rule.selectorText, "p", "simple identifier not escaped");
+set_selector_text('\\P');
+is(rule.selectorText, "P", "simple identifier not escaped");
+set_selector_text('\\70');
+is(rule.selectorText, "p", "simple identifier not escaped");
+set_selector_text('font-family_72756');
+is(rule.selectorText, "font-family_72756", "simple identifier not escaped");
+set_selector_text('-font-family_72756');
+is(rule.selectorText, "-font-family_72756", "simple identifier not escaped");
+set_selector_text('-0invalid');
+set_selector_text('0invalid');
+is(rule.selectorText, "-font-family_72756", "setting invalid value ignored");
+set_selector_text('Håkon\\ Lie');
+is(rule.selectorText, "Håkon\\ Lie", "escaping done only where needed");
+
+</script>
+</pre>
+</body>
+</html>