alias c=mixin(expr); disallowed, why?

[Timon Gehr]

On 06/22/2013 11:51 PM, Timothee Cour wrote:
>
>
> On Sat, Jun 22, 2013 at 2:47 PM, Timon Gehr <timon.gehr at gmx.ch
> <mailto:timon.gehr at gmx.ch>> wrote:
>
>     On 06/22/2013 09:52 PM, Timothee Cour wrote:
>
>         Is there a reason the language spec disallows this?
>
>         ----
>         void main(){
>              auto a=mixin("1");//OK
>              alias b=a;//OK
>              mixin("alias c=a;");//OK
>              // alias c=mixin("a");//NG : Error: basic type expected,
>         not mixin
>         }
>         ----
>
>
>     No, it is arbitrary.
>
>
> that's what i thought!
> same with template mixin's being restricated.
>

?

> ... can we fix it?
>
> it makes for cleaner code.
>

It surely could be fixed if you want to spend the time hacking on DMD.
I think the grammar is somewhat poorly designed in general.