perm@MIZAR.DOCS.UU.SE (Per Mildner) (12/11/89)
In GNU Emacs 18.55.5 of Thu Dec 7 1989 on mizar (berkeley-unix) backup-buffer should ask the user about deleting excess versions of a file BEFORE it touches the file (specifically before it rename to another name). Doing the query earlier prevents important files from being nonexistent for a long time if user does't answer.