/**
     * Return a String with linefeeds and carriage returns normalized to linefeeds.
     *
     * @param self a String object
     * @return the normalized string
     * @since 1.6.0
     */
    public static String normalize(String self) {
        final int len = self.length();
        final StringBuilder sb = new StringBuilder(self.length());

        for (int i = 0; i < len; i++) {
            final char ch = self.charAt(i);

            if (ch == '\r') {
                sb.append('\n');
                if (i + 1 < len && self.charAt(i + 1) == '\n')
                    i++; // skip the LF in CR LF sequence
            } else {
                sb.append(ch);
            }
        }

        return sb.toString();
    }