!7

static L<S> strings = ll("abc", " abc", "  ABC", "ab", "A", "B", "abc ", " abc ");

p {
  for (S a : strings)
    for (S b : strings)
      assertEqualsVerbose(a + "/" + b, indexOfIgnoreCase_usingRegexp(a, b), indexOfIgnoreCase_manual(a, b));
  print("OK");
}