DIP1000: Walter's proposal to resolve ambiguity of ref-return-scope parameters

[Dennis]

On Friday, 26 November 2021 at 00:26:35 UTC, Paul Backus wrote:
> More seriously: this is exactly the kind of obscure "gotcha" 
> that makes C++ so beginner-hostile, and IMO it is worth going 
> to considerable lengths (including breaking changes) to avoid 
> it.

Allowing breaking changes, what syntax do you think makes 
intuitive sense?