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<%@ taglib uri="http://tomcat.apache.org/testerFunctions" prefix="fn" %>
<%@ taglib prefix="tags" tagdir="/WEB-INF/tags" %>
<html>
<head><title>Bug 60431 test case</title></head>
<body>
<tags:echo echo="${'01-' += fn:concat('O', 'K')}"/>
<tags:echo echo="${'02-' += fn:concat(fn:toArray('O', 'K'))}"/>
<tags:echo echo="${'03-' += fn:concat(fn:toArrayB('O', 'K'))}"/>
</body>
</html>