Variable: pop3-uidl-file-backup

pop3-uidl-file-backup is a customizable variable defined in pop3.el.gz.

Value

(0 9)

Documentation

How to backup the UIDL file pop3-uidl-file when updating.

If it is a list of numbers, the first one binds kept-old-versions and the other binds kept-new-versions to keep number of oldest and newest versions. Otherwise, the value binds version-control (which see).

Note: Backup will take place whenever you check new mails on a server. So, you may lose the backup files having been saved before a trouble if you set it so as to make too few backups whereas you have access to many servers.

This variable was added, or its default value changed, in Emacs 24.4.

Source Code

;; Defined in /usr/src/emacs/lisp/net/pop3.el.gz
(defcustom pop3-uidl-file-backup '(0 9)
  "How to backup the UIDL file `pop3-uidl-file' when updating.
If it is a list of numbers, the first one binds `kept-old-versions' and
the other binds `kept-new-versions' to keep number of oldest and newest
versions.  Otherwise, the value binds `version-control' (which see).

Note: Backup will take place whenever you check new mails on a server.
So, you may lose the backup files having been saved before a trouble
if you set it so as to make too few backups whereas you have access to
many servers."
  :version "24.4"
  :type '(choice (group :tag "Keep versions" :format "\n%v" :indent 3
			(number :tag "oldest")
			(number :tag "newest"))
		 (sexp :format "%v"
		       :match (lambda (widget value)
				(condition-case nil
				    (not (and (numberp (car value))
					      (numberp (car (cdr value)))))
				  (error t)))))
  :group 'pop3)