> On 15 Mar 2020, at 11:22, Gerben Wierda <gerben.wie...@rna.nl> wrote:
> 
> I would like a vardef macro to return the pair of a picture and a bounding 
> box. I don't want to use the setbound operator, because as soon as I do that, 
> I cannot access the components of the picture anymore with pathpart.
> 
> I found metapost vardef returning multiple values on StackExchange but that 
> is about returning multiple values of the same numeric type. Is it possible 
> to have vardef return a set of (picture, path) or (picture, picture) in some 
> way? If not, I need to make two vardef macros for each result type.

Sure, using that same endgroup,begingroup trick. But since there is no 
multi-assignment in metapost that doesn’t you help much.
Either two separate vardefs or passing the to-be-assigned variable(s) as an 
extra argument(s) are generally more practical.

Best wishes,
Taco



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