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

[Dmitry Gutov]

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?