New syntax for comma expression

[Paul Backus]

On Thursday, 21 November 2024 at 02:09:14 UTC, Richard (Rikki) 
Andrew Cattermole wrote:
>
> On 21/11/2024 2:59 PM, Paul Backus wrote:
>> As a general rule, I don't think we should be adding new 
>> syntax to D because it's easier for the compiler to generate 
>> than the existing syntax.
>
> This is not an ease of use situation.
>
> There is nothing for the lowering to map to in the syntax.

Why does the lowering have to map to anything? It's an 
implementation detail of the compiler.