Variable: display-buffer-reuse-frames
display-buffer-reuse-frames is a customizable variable defined in
window.el.gz.
This variable is obsolete since 24.3; use a reusable-frames alist
entry in display-buffer-alist.
Value
nil
Documentation
Non-nil means display-buffer should reuse frames.
If the buffer in question is already displayed in a frame, raise that frame.
This variable was added, or its default value changed, in Emacs 21.1.
Probably introduced at or before Emacs version 21.1.
Source Code
;; Defined in /usr/src/emacs/lisp/window.el.gz
(defcustom display-buffer-reuse-frames nil
"Non-nil means `display-buffer' should reuse frames.
If the buffer in question is already displayed in a frame, raise
that frame."
:type 'boolean
:version "21.1"
:group 'windows)