wordChar(ctype2, '"');
        wordChar(ctype2, '~');
        wordChar(ctype2, '*');
        wordChar(ctype2, '.');
        // ordinaryChar(ctype2, '=');
        // ordinaryChar(ctype2, ',');
        whitespaceChars(ctype2, 0, ' ');
    }

    /**
     * Sets a range of characters as word characters.
     *
     * @param ctype2
     *            The array of character types.
     * @param low