!7

p {
  assertEqualsVerbose("abc", callAndMake_extended("ltrim(rtrim(x))", " abc "));
  assertEqualsVerbose(123, callAndMake_extended("123", " abc "));
  assertEqualsVerbose("bla", callAndMake_extended("\"bla\"", " abc "));
  assertEqualsVerbose("abcabc", callAndMake_extended(repString(2, x), "abc"));
}