Viewing differences in git with emacs-ediff

gitediff

#!/bin/sh

# adapted from http://technotales.wordpress.com/2009/05/17/git-diff-with-vimdiff/

if [ -n "${GIT_EXTERNAL_DIFF}" ]; then
    [ "${GIT_EXTERNAL_DIFF}" = "${0}" ] ||
    { echo "GIT_EXTERNAL_DIFF set to unexpected value" 1>&2; exit 1; }
    exec emacsclient --eval "(ediff \"$2\" \"$5\")"
else
    GIT_EXTERNAL_DIFF="${0}" exec git --no-pager diff "$@"
fi