[NTG-context] 2DOWN imposition gives blank pages

[Sanjoy Mahajan]

Dear Willi and Wolfgang,

Thanks for the explanations.  I understand ConTeXt arranging a bit
better now and am trying more (and longer) experiments.  I still can't
figure out this one, though.  Even printing doublesided, you don't
want p.1 to vanish:

> > \setuppapersize[A5][A4,landscape]
> > \setuparranging[2DOWN]
> > \starttext
> > \input tufte
> > \page
> > \input tufte
> > \stoptext
> > 
> > It produces:
> > 
> > p.1: |   |   |
> > p.2: | 2 |   |
> 
> This makes no sense.

(just tried it again to make sure that I wasn't hallucinating before.)

-Sanjoy

`Never underestimate the evil of which men of power are capable.'
         --Bertrand Russell, _War Crimes in Vietnam_, chapter 1.