Interaction with wp super cache

[donbowman]

Summary

Any comment on how this could be made to interact with wp super cache?
i'm getting the html version back since the cache hits on the file name.
it doesn't understand content-type accept nor query parameter as a 'vary' option.

Additional context

No response

[retlehs]

Thanks for the issue

Want to give #4 a shot to see if that works for you?

[donbowman]

It appears to work!