bug#20637: incompatible, undocumented change to vc-working-revision

[Dmitry Gutov]

On 04/14/2016 06:26 PM, Michael Albinus wrote:

> But since ESRs rewrite in fall 2014, there are still several
> inconsistencies.

Do you mean any of the changes introduced in the rewrite? If so, which ones?

> Eric confirmed that in an email to me. So it's not only
> bug hunting, a systematic review of the state is needed.

Sure, VC has problems, but (vc-state FILE) not always being equal to 
(vc-state FILE BACKEND) does not seem like the biggest one. It hasn't 
come up on my radar even once before.

> I've started to write systematic tests (up to my limited knowledge), and
> I've asked several times in emacs-devel ML for support, but nearly no
> response. That's why I'm kinda frustrated.

I remember. I'm here now, open to questions and dicussions. I'd like to 
avoid switching to master myself for the time being, though.