57.2.4 Saving Customizations
The customization buffer normally saves customizations in
~/.emacs. If you wish, you can save customizations in another
file instead. To make this work, your ~/.emacs should set
custom-file to the name of that file. Then you should load the
file by calling
load. For example:
(setq custom-file "~/.emacs-custom.el")
You can also use
custom-file to specify different
customization files for different Emacs versions, like this:
(cond ((< emacs-major-version 21)
;; Emacs 20 customization.
(setq custom-file "~/.custom-20.el"))
((and (= emacs-major-version 21) (< emacs-minor-version 4))
;; Emacs 21 customization, before version 21.4.
(setq custom-file "~/.custom-21.el"))
((< emacs-major-version 22)
;; Emacs version 21.4 or later.
(setq custom-file "~/.custom-21.4.el"))
;; Emacs version 22.1 or later.
(setq custom-file "~/.custom-22.el")))
If Emacs was invoked with the -q or --no-init-file
options (see Initial Options), it will not let you save your
customizations in your ~/.emacs init file. This is because
saving customizations from such a session would wipe out all the other
customizations you might have on your init file.