[TUHS] forth on early unix

[Thalia Archibald via TUHS]

On Sep 21, 2025, at 21:23, Rob Pike wrote:
> I wrote a lot of forth as a student programming radio telescopes, often
> inside the telescope base itself. That was a thing back then, much to my
> surprise. The regexp implementation BWK has celebrated was likely rooted in
> a similar thing I did one hot summer day baking underneath a dish, annoyed
> at the difficulty of doing what I wanted to do. That version fit inside a
> 512-byte block (that was a forth thing back then), probably two or three
> times over.

Rob,

Which regexp implementation was that? It sounds like one I haven't heard of. Are
you referring to the one in The Practice of Programming that you did with bwk?
Besides that, I know you wrote the ones for sam and Go; were there others? I've
been working on tracing historical development of regexp engines
(https://github.com/thaliaarchi/regexp-museum) and would be interested in any
you were involved with.

Thanks,
Thalia