Return value from nextToken() is the quote character instead of TT_WORD
when a quoted-string is encounted in the stream.

Result from toString() is then '"' when the quote character is ".

Code should be changed as follows:

At the end of the if-statement

   if ((ctype & CT_QUOTE) != 0) {

the return statement should be

        return ttype = TT_WORD; // was "return ttype;"