[Groff] illegal input characters in troff

[Werner LEMBERG]

The following input characters are illegal and will be ignored,
causing a warning message: 0x00, 0x0B, 0x0D-0x1F, 0x80-0x9F.

Does this make sense at all?  At least for some Asian encodings (like
SJIS for Japanese or Big 5 for Chinese), and of course for UTF-8, we
need the full 0x80-0xFF range.

Which characters are allowed in UNIX troff?

I suggest to change this and make all characters legal if not in
compatibility mode.


    Werner