comparison tests/test-convert-cvs.t @ 15131:7c26ce9edbd2

rollback: only restore dirstate and branch when appropriate.

If the working dir parent was destroyed by rollback, then the old
behaviour is perfectly reasonable: restore dirstate, branch, and
bookmarks. That way the working dir moves back to an existing
changeset rather than becoming an orphan.

But if the working dir parent was unaffected -- say, you updated to an
older changeset and then did rollback -- then it's silly to restore
dirstate and branch. So don't do that. Leave the status of the working
dir alone. (But always restore bookmarks, because that file refers to
changeset IDs that may have been destroyed.)

15130:3d44e68360a6

  converting...
  2 Initial revision
  1 import
  filtering out empty revision
  repository tip rolled back to revision 0 (undo commit)
  working directory now based on revision -1
  0 ci0
  updating tags
  $ hgcat b/c
  c
  c

15131:7c26ce9edbd2

  converting...
  2 Initial revision
  1 import
  filtering out empty revision
  repository tip rolled back to revision 0 (undo commit)
  0 ci0
  updating tags
  $ hgcat b/c
  c
  c