"Roll back, undoing the most recent checkins of FILES. Directories are
expanded to all registered subfiles in them."
(if (not files)
- (error "RCS backend doesn't support directory-level rollback."))
+ (error "RCS backend doesn't support directory-level rollback"))
(dolist (file (vc-expand-dirs files))
(let* ((discard (vc-working-revision file))
(previous (if (vc-rcs-trunk-p discard) "" (vc-branch-part discard)))