[metapost] Can not use boxes.mp -- capacity exceeded

[Taco Hoekwater]

Steven Woody wrote:
> it seemed my metapost can not work with boxes. if i use "input boxes",
> metapost will definitely compain:
> 
> (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp
> (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp (boxes.mp
> (boxes.mp (boxes.mp (boxes.mp (boxes.mp
> ! MetaPost capacity exceeded, sorry [text input levels=20].
> l.7 input boxes
> 
> 
> what's the hell going on? thanks.

Is your test file itself called boxes.mp, by any chance?

That would make metapost input the file itself (instead of
the macro package)

Best wishes,
Taco