bug#57400: 29.0.50; Support sending patches from VC directly

[Dmitry Gutov]

On 07.10.2022 18:30, Philip Kaludercic wrote:
> > > It is for this reason that I prefer the current approach, especially
> > > when combined with the ability to select commits in a log.
> > I'm definitely not going to insist: I'm not the target audience of
> > this feature.
> I could imagine falling back onto the manual selection of revisions when
> the root directory is not defined, but I fear that would be too
> inconsistent and might lead to unintended/unexpected behaviour when
> switching between VCSs.

IMHO we could just refuse to support the backends which don't have the 
notion of root directory, in this feature.