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#lang br
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(require "subscope.rkt")
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(introduce-scope blue)
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(introduce-scope red)
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#;(introduce-scope purple (red blue))
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(define #'(double-x)
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(with-blue-identifiers (x)
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#'(+ x x)))
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(define:blue x 50)
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x:blue
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(define:red x 42)
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x:red
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(double-x) |