Why not flag away the mistakes of the past?

[Dukc]

On Wednesday, 7 March 2018 at 16:29:33 UTC, Seb wrote:
> Well, I tried that already:
>
> https://github.com/dlang/phobos/pull/5513
>
> In short: very easy to do, but not much interest at the time.

No. The main problem with that (and the idea of using a compiler 
flag in general) is that it affects the whole compilation. That 
means that every single third-party library, not only Phobos, has 
to work BOTH with and without the switch.

IMO, if we find a way to enable or disable autodecoding per 
module, not per compilation, that will make deprectating it more 
than worthwhile.