[busterarm]

You can just use icdiff to get handsome-looking split diffs in terminal. https://github.com/jeffkaufman/icdiff

in your .gitconfig

    [diff]
    tool = icdiff

    [difftool]
    prompt = false

    [difftool "icdiff"]
    cmd = /usr/bin/icdiff --line-numbers $LOCAL $REMOTE | less -eFXR

then git difftool