Should we deprecate comma?

[bearophile]

deadalnix:

> Andrei Alexandrescu:
>> The change has an eye to that. Disallowing the use of the 
>> return value offers us the future possibility of redefining 
>> it. -- Andrei
>
> That is brilliant ! I'm buying.

Please show few examples. I am not sure using the comma for 
tuples in just return situations is a good idea. It seems too 
much special casing. Also because returning tuples is already 
currently acceptable. The main problem is breaking tuples apart.

Bye,
bearophile