code: private boolean couldBeRegexp(Inp in) {
          // old code fails on comment => regexp
          return "(,=:[!&|?{};".indexOf(in.scanLastNWS()) >= 0 || "*/".equalsIgnoreCase(in.scanLastNWSDouble()) || in.isFirstCharAfterLineBreak();
          // if it is division
      }
docs: assumes comments are logically excluded