static S symbolToStringFull(Symbol s) {
  ifdef SymbolAsString
  ret s;
  endifdef
  ifndef SymbolAsString
  if (s == null) ret "null";
  S _s = s.text();
  if (!eqic(s.text(), s.lowerCase()))
    _s += "/" + s.lowerCase();
  _s += " [" + identityHashCode(s.master) + "]";
  ret _s;
  endifndef
}