[metapost] question concerning Donald E. Knuth's report

[Boguslaw Jackowski]

Hi,

there is the following passus in recent Knuth's report
on the drawdot problem:

> I also see that "withpen pencircle scaled 2" gives different
> results from "withpen (pencircle scaled 2)"! In METAFONT there
> is no difference between these.

Was anybody able to reproduce this behavior?
Can anybody guess what can be the problem?

Cheers -- Jacko

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