> but the thing about output filters is they should do something like
> return DECLINED unless $r->content_type =3D~ =

> so your xml filter should decline (or better, remove itself) from the
> filter chain if it's not xml you're being asked to process.

yup, I'll tell the maintainer of this output filter (it's not my module, =
I am still steering away from writing my own filter ;-) ).