[nem-en] Macros and syntax extensions.

[vc]

> Well, how does it relate to abovementioned piece of code? 

With ST it code can be rewritten in completely declarative manner and
without any performance penalty.

> And
> the need for recursive templates is VERY rare and, I guess, is limited to
> code generation tasks. This is IMHO, or course.

About any feature which you not use it seems to you: "VERY rarely used" and
"unimportant". For example, try telling about quasi-quotation and pattern to
matching any C++ programmer.

Vlad