State of -preview=rvaluerefparam

[Tejas]

On Monday, 17 June 2024 at 13:40:34 UTC, Quirin Schroll wrote:
> Is `-preview=rvaluerefparam` going to be part of the language 
> or has this course been abandoned?
>
> For all other preview switches, I have the impression that 
> they’re going to be part of the language once either the 
> deprecation period is over/we get editions, or the feature is 
> ironed out. In the following table, *Bugfix* means the former, 
> *Feature* means the latter.
>
> | Preview Switch        | Category |
> |-----------------------|----------|
> | `dip25`               | Feature  |
> | `dip1000`             | Feature  |
> | `dip1008`             | Feature? |
> | `dip1021`             | Feature  |
> | `bitfields`           | Feature  |
> | `fieldwise`           | Bugfix   |
> | `fixAliasThis`        | Bugfix   |
> | `rvaluerefparam`      | **???**  |
> | `nosharedaccess`      | Bugfix   |
> | `in`                  | Bugfix   |
> | `inclusiveincontracts`| Bugfix   |
> | `fixImmutableConv`    | Bugfix   |
> | `systemVariables`     | Feature  |
>
> When conceptualizing or writing DIPs, it is crucial to take the 
> prospected state of the language into account. For 
> `rvaluerefparam`, it seems this is an abandoned path. It’s 
> neither an extension of something the language can express nor 
> is it a bugfix in the sense that if we could go back in time, 
> we’d make it like this from the beginning.

What about [Dip 
1040](https://github.com/dlang/DIPs/blob/a9c553b0dbab1c2983a801b5e89b51c5c33d5180/DIPs/DIP1040.md)?