Variable: ff-always-in-other-window
ff-always-in-other-window is a customizable and buffer-local variable
defined in find-file.el.gz.
Documentation
If non-nil, find the corresponding file in another window by default.
To override this, give an argument to ff-find-other-file.
Source Code
;; Defined in /usr/src/emacs/lisp/find-file.el.gz
(defcustom ff-always-in-other-window nil
"If non-nil, find the corresponding file in another window by default.
To override this, give an argument to `ff-find-other-file'."
:type 'boolean)