Variable: ediff-wide-display-p
ediff-wide-display-p is a buffer-local variable defined in
ediff-wind.el.gz.
Documentation
If t, Ediff is using wide display.
Source Code
;; Defined in /usr/src/emacs/lisp/vc/ediff-wind.el.gz
;; Wide frame display
(ediff-defvar-local ediff-wide-display-p nil
"If t, Ediff is using wide display.")