+;; NB this does not handle svn properties, which can be changed
+;; without changing the file timestamp.
+;; Note that unlike vc-cvs-state-heuristic, this is not called from
+;; vc-svn-state. AFAICS, it is only called from vc-state-refresh via
+;; vc-after-save (bug#7850). Therefore the fact that it ignores
+;; properties is irrelevant. If you want to make vc-svn-state call
+;; this, it should be extended to handle svn properties.