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André Spiegel authored
(vc-default-previous-version): Renamed from vc-previous-version. New args BACKEND and FILE. Return nil for revision numbers without a `.' (vc-version-diff): Call vc-BACKEND-previous-version. (vc-steal-lock): Steal lock before composing mail, so that no mail is sent when the stealing goes wrong. And we'll actually see the error in that case now. (vc-finish-steal): Removed.
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