Too bad, they did not use the UNIX tool kit like troff and eqn which are described in the paper itself, to restore it. If you were going to the trouble to make the 'md' file - it would have been just as easy to create troff source.
In fairness, the Markdown renders directly from the github web UI, but I agree that using troff/eqn would have been nice. Surely it wouldn't be that hard to massage the markdown into troff markdown.
Sigh ... get off my lawn ...
I don't even have a lawn and I'm similarly distressed at the lack of homage to the past.
- Dan C.
Apologies
if this has already been linked here.
"The UNIX Command
Language is the first-ever paper published on the Unix shell. It was
written by Ken Thompson in 1976."
https://github.com/susam/tucl
Joachim