Can you define variable argument EL functions in tld files, as in:
| <function-signature>
| java.lang.String concat(java.lang.String...)
| </function-signature>
public static String concat(String... strings) {
| StringBuilder sb = new StringBuilder();
| for (int j = 0; j < strings.length; j++)
| sb.append(strings[j]);
| return sb.toString();
| }
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