feature request: __ARGS__ for logging (cf __FILE__, __LINE__, __FUNC___)

[timotheecour]

seems like my original post regarding __ARGS__ was completely 
hijacked by the discussion on AST macros (however fruitful and 
interesting). I agree macros would solve this issue while 
providing a much more general solution, however, it's very 
unclear when that would be implemented, surely not anytime soon.

Is there any other feedback on introducing __ARGS__  (see first 
post) besides AST macros being better? It's much simpler 
implementation-wise.