(if (and (fboundp 'vc-git-registered)
;; does not exist in old emacs
(fboundp 'vc-git-responsible-p)
(vc-git-responsible-p buffer-file-name)
(not (vc-git-registered buffer-file-name)))
(if (and (fboundp 'vc-git-registered)
;; does not exist in old emacs
(fboundp 'vc-git-responsible-p)
(vc-git-responsible-p buffer-file-name)
(not (vc-git-registered buffer-file-name)))