sS tok_insertAFewSpaces(S s) {
  ret join(tok_insertAFewSpaces(javaTok(s)));
}

static LS tok_insertAFewSpaces(LS tok) {
  int n = l(tok);
  for (int i = 1; i+2 < n; i += 2) {
    if (eqGet(tok, i+1, "")) {
      S me = get(tok, i), next = get(tok, i+2);
      if (eq(me, "}") && (isIdentifier(next) || eq(next, "("))
        || eq(me, ")") && eq(next, "{"))
        tok.set(i+1, " ");
    }
  }
  ret tok;
}