return (0 <= wc && wc < 256) ? isprint (wc) : 0;
return (0 <= wc && wc < 256) ? IsPrint (wc) : 0;
int iswprint (wint_t wc){  if (Charset_is_utf8 || charset_is_ja)    return ((0x20 <= wc && wc < 0x7f) || 0xa0 <= wc);  else    return (0 <= wc && wc < 256) ? isprint (wc) : 0;}