dip1000 and preview in combine to cause extra safety errors

[deadalnix]

On Wednesday, 8 June 2022 at 17:50:18 UTC, John Colvin wrote:
> The compiler is going “you told me `foo` doesn’t leak 
> references to the string passed to it, I believe you. Based on 
> that, this temporary array is safe to put on the stack”. I 
> think it’s reasonable for the compiler to lean on `scope` like 
> this.
>

Never mind, result is a `string[]` so yes, it's somewhat expected.