> How can I obtain a copy of AT&T pic?
The plan 9 stuff is the nearest one you can get, I think.
> Its lexer returns left as a CORNER token only when preceded by "."
> or followed by "of", so it can't be the inspiration for the GNU pic
> behavior I'm observing.
Well, James Clark has written the parser from scratch, probably based
on his experience with sqtroff.
> I'm getting the strong impression that I'm looking at a very obscure
> usage of GNU pic. Would you agree?
Patches are highly welcome :-)
Werner