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Thank you. I will work on it. Sincerely, Chongkai Zhu ======= At 2006-05-06, 06:27:14 David Van Horn wrote: ======= > From R5RS: > > 3.5 Proper tail recursion > > If a cond expression is in a tail context, and has a clause of the > form (<expression1> => <expression2>) then the (implied) call to the > procedure that results from the evaluation of <expression2> is in a > tail context. <expression2> itself is not in a tail context. > >I would guess the intent of this SRFI is that the same should apply to >case. Perhaps it should be stated explicitly. > >David >