multiple `alias this` suggestion

[Stefan Koch via Digitalmars-d]

On Friday, 21 April 2017 at 16:41:45 UTC, Meta wrote:
> On Friday, 21 April 2017 at 16:21:57 UTC, H. S. Teoh wrote:
>> On Fri, Apr 21, 2017 at 08:17:28AM -0400, Andrei Alexandrescu 
>> via Digitalmars-d wrote: [...]
>>> This is interesting, and would be timely to discuss before an 
>>> implementation of multiple alias this gets started. -- Andrei
>>
>> Whatever happened to the almost-complete implementation of 
>> alias this that was sitting in the PR queue a while back?  
>> Have we just let it bitrot into oblivion? :-(
>>
>>
>> T
R
> https://github.com/dlang/dmd/pull/3998/files
>
> It's written against C++ DMD as it was in 2014 so it may not be 
> feasible anymore to easily port it to DDMD.

This one looks easy to port.
However I am not sure if those are disired semantics and that was 
one of the points raised against the PR iirc.