[racket] stumped by a little macro exercise
After two steps, do you not get something that looks like this?
[image: mtc.png]
The two mtc's are in different colors.
That is because each came from a different sweep of transformation, so they
have different marks (colors). That's precisely the hygiene algorithm at
work: names introduced together are colored together, names introduced
separately are colored separately.
Shriram
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