Ghosting a language feature

[Avrina]

On Tuesday, 22 September 2020 at 03:49:22 UTC, Mathias LANG wrote:
> On Tuesday, 22 September 2020 at 03:24:32 UTC, Avrina wrote:
>>
>> That's to say if you want how D is developed now you'd just 
>> use -spec=d2.xy and it'll enable be at the bleeding edge. 
>> What'd this introduce is a way for people that want and need 
>> backwards co.patibility to have it.
>
> We have `-preview` for this.

Doesn't solve the problems Mike outlined. I've experienced the 
same problems, a regression preventing me from using using a new 
version of DMD, while the new version has a bug fix I needed.