svoid test_cicAnyToRegexp() {
  var re = cicAnyToRegexp("hello", "world.");
  testFunctionValues((IPred<S>) s -> re.containedIn(s),
    "hello", true,
    "HELLO", true,
    "hell", false,
    "world.", true,
    "worldx", false,
    "hello world", true,
    "what WORLD. what", true);
}