bug#41821: 28.0.50; read-directory-name in vc commands should provide defaults from projects

[Eli Zaretskii]

> Cc: 41821@debbugs.gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Wed, 24 Jun 2020 18:10:52 +0300
> 
> On 24.06.2020 17:39, Eli Zaretskii wrote:
> > vc-hooks.el is
> > preloaded, so any attempt to call a project.el function in it runs a
> > very real risk to force loading project.el, something that we didn't
> > yet decide to do.
> 
> I don't quite understand. Is it a problem to call a non-preloded 
> function at runtime?

As I tried to explain, I'd like to avoid calling such functions from
preloaded code.

Is that possible, please?