[core-workflow] Stage and keywords differences

[francis]

Dear core-devs,
I would like to ask about the differences between (from the devguide [1]):
a) stage:needs patch and keywords:patch
b) stage:patch review and keywords:needs review

Aren't those redundant? Why are those keywords needed?
IMHO the keywords ones could be refactored out. Doesn't a issue that's 
on stage:needs patch be marked “without patch” (not marked in that case) 
and some that is on stage:patch review or above be  always marked as 
“keywords:patch” …?


Thanks in advance!

Regards,
francis

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[1]  https://docs.python.org/devguide/triaging.html