Function: vc-svn-previous-revision
vc-svn-previous-revision is a byte-compiled function defined in
vc-svn.el.gz.
Signature
(vc-svn-previous-revision FILE REV)
Source Code
;; Defined in /usr/src/emacs/lisp/vc/vc-svn.el.gz
;; vc-svn-mode-line-string doesn't exist because the default implementation
;; works just fine.
(defun vc-svn-previous-revision (_file rev)
(let ((newrev (1- (string-to-number rev))))
(when (< 0 newrev)
(number-to-string newrev))))