Passing keyword only args as positional should fail.

[ianjosephwilson]

Issue

#405

This is a backwards incompatible change because code that was "working" will now throw an exception.

Historically related

836e5f9

[sqla-tester]

OK, this is sqla-tester setting up my work on behalf of zzzeek to try to get revision c8acb9a of this pull request into gerrit so we can run tests and reviews and stuff

[sqla-tester]

New Gerrit review created for change c8acb9a: https://gerrit.sqlalchemy.org/c/sqlalchemy/mako/+/5337

[zzzeek]

tricky, because extremely trivial, yet the backwards compat for a very slow moving project like Mako implies we'd need a major release.

waht if we just keep this as an unusual idiosyncratic behavior and just add a test that it passes?

[ianjosephwilson]

That's fine. Someone just asked about on stackoverflow. Should there be a note in the Using defs part of the documentation or just leave the test as the documentation?

[zzzeek]

I think adding a doc note is fine, indicating there's a bit of legacy behavior here to be aware of, in addition to a test that notes it's related to issue #405