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<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<s:generator val="value" separator="," var="iplist"></s:generator>
<c:if test="${fn:length(iplist) eq 1}">${value}</c:if>
<c:if test="${not (fn:length(iplist) eq 1)}">select...</c:if>