if (c < csv->first_safe_char || (c >= 0x7f && c <= 0xa0) ||
       (csv->quote_char  && c == csv->quote_char) ||
       (csv->sep_char    && c == csv->sep_char)   ||
       (csv->escape_char && c == csv->escape_char)) {
        /* Binary character */
        break;
        }