Re: [PATCH v3 4/4] for-each-ref: avoid filtering on empty pattern

> Depending on the answer, I think we can go one of two ways:
>
>   - Accept the diverging behaviour and add `--include-all-refs`. The
>     "files" backend does a best effort and only includes root refs, the
>     "reftable" backend lists all refs.
>
>   - Double down on the fact that refs must either be pseudo refs or
>     start with "refs/" and treat any ref that doesn't fit this bill as
>     corrupted. The consequence here would be that we instead go with
>     `--include-root-refs` that can be implemented the same for both
>     backends. In addition, we add checks to git-fsck(1) to surface and
>     flag refs with bogus names for the "reftable" backend.
>
> While I seem to have convinced you that `--include-all-refs` might not
> be a bad idea after all, you have convinced me by now that the second
> option would be preferable. I'd be okay with either of these options as
> both of them address the issue at hand.