On 2018-04-13 15:23, Nick Coghlan wrote:

There's also a section in the rationale which refers to METH_USRx flags, which I'm guessing from context are an idea you were considering proposing, but eventually dropped from the rest of the PEP.

No, I actually still want to propose it. In my latest update of the PEP, I hope to have made it more clear.