GitLab

(vc-default-init-version): Update documentation to
indicate that the backend can override the default init version.
(vc-register): Use the backend init-version function, if it exists, to
determine the initial version of a file.
(vc-diff-switches-list): Don't symbol-quote backend, since it's
already a symbol.  Don't fail if vc-BACKEND-diff-switches isn't bound.