please include function testBracketHygiene.

static Pair<Int, S> testBracketHygiene2(S s) {
  ret testBracketHygiene2(s, testBracketHygiene_op, testBracketHygiene_close);
}

static Pair<Int, S> testBracketHygiene2(S s, S op, S close) {
  L<S> tok = javaTok(s);
  new Map<Int, Int> map;
  L<int> stack = getBracketMap2(tok, map, op, close);
  if (nempty(stack))
    ret pair(tokenToCharIndex(tok, last(stack)),
      "Bad hygiene - " + n(l(stack), "bracket") + " not closed");

  if (map.containsKey(0))
    ret pair(tokenToCharIndex(tok, map.get(0)),
      "Bad hygiene - bracket not opened (" + quote(tok.get(map.get(0))) + ")");

  for (int i : keys(map)) {
    int j = map.get(i);
    S a = tok.get(i), b = tok.get(j);
    int ai = op.indexOf(a), bi = close.indexOf(b);
    if (ai != bi)
      ret pair(tokenToCharIndex(tok, j),
        "Bad hygiene - brackets don't match (" + quote(a) + " vs " + quote(b) + ")");
  }
  
  null;
}