Hi Mark,
Quoting Mark Shannon <mark@hotpy.org>:
[...]
If you had published these "more complicated, powerful protocols", you might be able to claim that this is a "rehash".
But you didn't.
I would say that these ideas have been quite prominently published:
https://www.python.org/dev/peps/pep-0622/#custom-matching-protocol
https://dl.acm.org/doi/10.1145/3426422.3426983
Moreover, much of the discussion is publicly available, for instance here:
https://github.com/gvanrossum/patma/issues/8
Cheers,
Tobias