[racket] Metaprogramming with scheme

> The errortrace library is good but for development time not for this 
> case.  Also it does not tell error location for each function anyway. 
> Probably because continuation created not for each function.
>
> But I found another interesting thing. The error message in DrRake and 
> command line rake are different (I did not know that). And rake's 
> messages more informative. That is good news for me.

In the any case the errortrace display more info.