Hi Hans,

> it's more that tex likes to duplicate the # internally
Ah, yes, I've seen some mentions on @## in error messages, but I thought that
was just part of the way metapost handled @#. Apparently not :-)

> how about adding
>
> let @## = @# ;
>
> to mp-tool.mp (you need to remake the context format in mkiv or the  
> metafun format in mkii)
This worked for me in MkIV. Will this be included in the next beta?

Gr.

Matthijs