sbool tok_doAsMethodName_strict = false;

// Strict mode:
// Sometimes you have to make sure to omit the space after "do"
//   do(...)
// as opposed to
//   do (bla+bla).something(); while ...;  << very unusual anyway

// Non-strict mode:
//   do (bla+bla).something(); while ...;
// is not possible anymore (but who does this?)
// You can use spaces however you like

static void tok_doAsMethodName(L<S> tok) {
  if (!tok.contains("do")) ret;
  for (int i = 1; i+2 < l(tok); i += 2) {
    S next = tok.get(i+2), prev = get(tok, i-2);
    if (tok.get(i).equals("do") && eq(next, "(")
      && (!tok_doAsMethodName_strict
        || eq(prev, ".") || empty(tok.get(i+1))))
      tok.set(i, "dO");
  }
}