post qualifier and template constraint limitation, is there a reason ?

[Walter Bright via Digitalmars-d]

On 1/17/2015 12:33 AM, deadalnix wrote:
> This is accepted :
> auto fun(T)(T T) inout if(...) { ... }
>
> This is not :
> auto fun(T)(T T) if(...) inout { ... }
>
> Is there a reason ?

There was no known reason to.