fine to save an escape continuation for sk
svn: r3382
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@ -894,7 +894,7 @@
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;;> `(amb)' fails immediately.
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(defsubst* (amb expr ...)
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(let ([prev-amb-fail (amb-fail)])
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(let/cc sk
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(let/ec sk
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(let/cc fk
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(amb-fail (thunk (amb-fail prev-amb-fail) (fk 'fail)))
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(sk expr)) ...
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