Subject: bug#21457: 25.0.50; vc-test-git03-working-revision test fails

From: Eli Zaretskii <[email-masked]>
Date: Sat, 12 Sep 2015 18:52:00 +0300

> Date: Sat, 12 Sep 2015 18:36:41 +0300
> From: Eli Zaretskii <[email-masked]>
> Cc: [email-masked]
> 
> But I still don't understand how this
> 
> 	  ;; Create empty repository.  Check working revision of
> 	  ;; repository, should be nil.
> 	  (make-directory default-directory)
> 	  (vc-test--create-repo-function backend)
> 
> 	  ;; nil: CVS Mtn RCS SCCS
> 	  ;; "0": Bzr Hg SRC SVN
> 	  ;; "master" or "HEAD": Git
> 	  (should (eq (vc-working-revision default-directory)
> 		      (vc-working-revision default-directory backend)))
> 
> was supposed to work, since "git rev-parse HEAD" fails in an empty
> repository and returns just "HEAD", not a 40-digit hash or "master".

Ah, okay, I get it: vc-working-revision was supposed to fail and
return nil in both cases.  Which makes this test not a very useful
one.  But then how was this supposed to work?

	    ;; Register a file.  Check working revision.
	    (vc-register
	     (list backend (list (file-name-nondirectory tmp-name))))

	    ;; nil: Mtn RCS SCCS
	    ;; "0": Bzr CVS Hg SRC SVN
	    ;; "master" or "HEAD": Git
	    (should (eq (vc-working-revision tmp-name)
			(vc-working-revision tmp-name backend)))
	    (should
	     (member (vc-working-revision tmp-name) '(nil "0" "master")))