Variable: ediff-current-difference
ediff-current-difference is a buffer-local variable defined in
ediff-init.el.gz.
Documentation
The difference that is currently selected.
Source Code
;; Defined in /usr/src/emacs/lisp/vc/ediff-init.el.gz
(ediff-defvar-local ediff-current-difference -1
"The difference that is currently selected.")