Re: feature request from r5rs

> 
> How?
> 
> A better example to the above is:
> 
> (let ((v (delay * 3 4)))
>   (+ v 13))
> 
> The compiler doesn't know (in the general case) that v is delayed, so it 
> cannot omit special code to force it. This decision needs to be made at 
> runtime, e.g. by examining whether any of the arguments need forcing.
> 

You're right of course.  And I'm pretty opposed to having this in the 
stock distribution if it reduces performance across the board.  It would 
need to be similar to interrupts in this regard.

	Scott

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