[nem-en] Debugging macros again

[NoiseEHC]

What if you simply show the AST?
I mean that if the macro is simply <[]> then show the code otherwise 
just show
the delta of the AST. Everybody who is using real AST manipulation 
should be
advanced enough to accept that output.

Kamil Skalski wrote:
>>
>> We talk about generating fake code for macros generated AST. Maybe 
>> time to
>> return to this problem?
>
> I implemented this some time ago? Is it not usable?
>
>
>