!7

p-tt {
  centerBigConsole();
  int problems = 0;
  for (int i = 0; i <= 0xFFFF; i++) {
    if ((i % 1000) == 0) print(i);
    char c = (char) i;
    S s = str(c);
    for (int j = 0; j <= 0xFFFF; j++) {
      char c2 = (char) j;
      S s2 = str(c2);
      bool b;
      if ((b = eqic(s, s2)) != eq(toLowerOfToUpper(s), toLowerOfToUpper(s2))) {
        print("Problem chars " + b + ": " + i + "/" + j + " - " + s + "/" + toLowerOfToUpper(s) + " - " + s2 + "/" + toLowerOfToUpper(s2));
        ++problems;
      }
    }
  }
  print(n2(problems, "problem char"));
}

Began life as a copy of #1013283