VDIFF == vimdiff
Installable from melpa, vdiff enables synchronized movement
through diff buffers without resorting to an extra control-panel
as is the case with ediff.
In addition to speech-enabling interactive commands and setting
up face->voice mappings, this module provides commands that speak
the current hunk. These are bound in vdiff-mode-prefix-map.
emacsvox-vdiff-speak-this-hunk bound to SPC.
emacsvox-vdiff-speak-other-hunk bound to C-SPC.
emacsvox-vdiff-speak-other-line bound to l.