;; - add a mechanism for editing the underlying VCS's list of files
;; to be ignored, when that's possible.
;;
+;;;; Primitives that need changing:
+;;
+;; - vc-update/vc-merge should deal with VC systems that don't
+;; update/merge on a file basis, but on a whole repository basis.
+;; vc-update and vc-merge assume the arguments are always files,
+;; they don't deal with directories. Make sure the *vc-dir* buffer
+;; is updated after these operations.
+;; At least bzr, git and hg should benefit from this.
+;;
;;;; Improved branch and tag handling:
;;
;; - "snapshots" should be renamed to "tags", and thoroughly reworked.