> Yes, it looks right. But what is making me think is, that the original
> calculations seem right. It appears, that the floatbox-origin is shifted
> somewhere. So maybe it is really something in the float-setup or
> float-boxing that is wrong, and my fix is just a work-around.
> Especially, as the offset seems to depend on the spancnt of the float,
> something that is not used in this part of xo-new.

Yes, I agree that that seems odd.

> I still have some trouble tracing the float-placement, so I have not found
> anything there, that looks wrong. So that's what I meant with "the right
> place".

Hmm, yes!  Tricky stuff geometry.

That kind of placment stuff needs a cleaner interface, probably in a
seperate `module'.