static bool is_iso_latin1_printable(char ch)
{
    return (((ch >= 32) && (ch <= 126)) ||
            (static_cast<unsigned char>(ch) >= 160));
}
static bool is_iso_latin1_printable(char ch)
{
    return (((ch >= 32) && (ch <= 126)) ||
            (static_cast<unsigned char>(ch) >= 160));
}