if (isUpdated()) {
            buf.append(quoteEscape(newToken));
            buf.append(',');
            buf.append(quoteEscape(newSegmentation));
            buf.append(',');
            buf.append(quoteEscape(newReading));
            buf.append(',');
            buf.append(quoteEscape(newPos));
        } else {
            buf.append(quoteEscape(token));
            buf.append(',');

            // quoteEscape(String)
            Method quoteEscapeMethod = KuromojiCSVUtil.class.getMethod("quoteEscape", String.class);
            assertTrue("quoteEscape should be static", java.lang.reflect.Modifier.isStatic(quoteEscapeMethod.getModifiers()));
            assertTrue("quoteEscape should be public", java.lang.reflect.Modifier.isPublic(quoteEscapeMethod.getModifiers()));

        return result;

    }

    /**
     * Quote and escape input value for CSV
     *
     * @param original Original text.
     * @return Escaped text.
     */
    public static String quoteEscape(final String original) {
        String result = original;

        if (result.indexOf('\"') >= 0) {
            result = result.replace("\"", ESCAPED_QUOTE);
        }
        if (result.indexOf(COMMA) >= 0) {