Variable: completions-file-versions-kept
completions-file-versions-kept is a customizable variable defined in
completion.el.gz.
Value
2
Documentation
Number of versions to keep for the saved completions file.
Source Code
;; Defined in /usr/src/emacs/lisp/completion.el.gz
(defcustom completions-file-versions-kept kept-new-versions
"Number of versions to keep for the saved completions file."
:type 'integer)