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