Parameter forwarding

[Tejas]

On Thursday, 14 October 2021 at 17:37:21 UTC, Paul Backus wrote:
> On Thursday, 14 October 2021 at 16:53:17 UTC, Kostiantyn Tokar 
> wrote:
>> [...]
>
> Poor test coverage. If you go through Phobos and test 
> everything with a non-copyable struct (`@disable this(this)`), 
> you will find that most templates (including `Tuple`) fail to 
> compile. It is simply a case that the authors of the code never 
> considered.
>
>> [...]
>
> I suspect it is neglected because nobody wants to volunteer for 
> the tedious work of going through Phobos, adding unit tests 
> that check for unnecessary copies, and inserting `auto ref` and 
> `forward` in the appropriate places.

Maybe DIP 1040 will automatically solve that?

>last use of objects that is a copy gets elided into a move

That is what it states, so maybe this one time, the problem will 
go away just by waiting?