[plt-scheme] Getting Serious with Learning Macros

Doug Williams wrote:
> I saw the examples in the guide. They are rather trivial and it really took
> looking at real examples in the code to see what was going on - at least for
> me. What I was looking for was something between the guide - too trivial -
> and the PLT Scheme code - no context. What I really want is the brain of
> whoever wrote things like pattern.ss. Actually, pattern.ss is just one I
> happened to find by poking around. Just pointing to some examples like that
> would be useful.
>
>   

I just added a slightly less trivial example for define-for-syntax. 
Usually I like to add trivial examples because they are easy to mentally 
parse (rather than reading some text) but more sophisticated examples 
would be more educational.