Re: [PATCH 5/7] tmp-objdir: new API for creating and removing primary object dirs

>
> Jeff King <peff@peff.net> writes:
>
> >   - is it possible for the merge code to ever write an object? I kind of
> >     wonder if we'd ever do any cache-able transformations as part of a
> >     content-level merge. I don't think we do now, though.
>
> How is virtual merge base, result of an inner merge that recursively
> merging two merge bases, fed to an outer merge as the ancestor?
> Isn't it written as a tree object by the inner merge as a tree with
> full of blob objects, so the outer merge does not have to treat a
> merge base tree that is virtual any specially from a sole merge
> base?