bug#12001: 24.1.50; vc-diff always talks to CVS repository

[Andreas Schwab]

Richard Stallman <rms@gnu.org> writes:

> This is not happening for me when I edit the Emacs sources.
> The reason seems to be that 
>
>            (vc-call-backend backend 'make-version-backups-p file)
>
> does nothing, because it calls vc-default-make-version-backups-p
> which always returns nil.

make-version-backups-p only returns non-nil for VCS that don't have the
original version locally.

> Indeed, vc-bzr-make-version-backups-p is not defined.
> Should it be?

No VCS other than CVS should need it.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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