ediff-inferior-compare-regions
ediff-inferior-compare-regions is an interactive compiled Lisp function in `ediff-util.el
'.
(ediff-inferior-compare-regions)
Compare regions in an active Ediff session.
Like `ediff-regions-linewise' but is called from under an active Ediff session on
the files that belong to that session.
After quitting the session invoked via this function, type C-l to the parent
Ediff Control Panel to restore highlighting.