At 2022-08-12T00:46:57-0600, arnold@skeeve.com wrote:
> "G. Branden Robinson" <g.branden.robinson@gmail.com> wrote:
> > > Oh surely. I just don't know what sources those would be, exactly;
> > > presumably some derivative he's been shepherded all these years? I
> > > wonder what it is....
> >
> > Per Kernighan's _Unix: A History and a Memoir_ (2020), it seems
> > likely that it was simply groff.
> 
> Knowing BWK, I personally doubt that he'd have messed with GNU pic
> when he has his own copy of the original program that he himself wrote.

Wishful thinking on my part, maybe.

> I'm also quite sure that he prefers C to C++.

No doubt--but groff is pretty accessible to C programmers, being almost
entirely of an ancient vintage of C++.  We don't have rvalue references
inside lambda expressions inside templates, for instance.

Regards,
Branden