Highlighting whitespace on removal with git diff

> When I do say 'git diff', and I have added a line with a trailing
> whitespace, i get a red square box highlighting the added whitespace.
> (on the '+' diff line)
> What I want, is the reverse - so when I delete an existing whitespace,
> I get something similar, for example a blue box highlighting the
> deleted whitespace (on the '-' diff line)
> 
> Currently the only notificate I get is identical
> '-' and '+' diff lines, but no indication of the whitespace deleted
> 
> I know I can do this with graphical tools, but ideally would like some way
> using the standard console git diff - if this is possible.
> 
> I have  the following in my .gitconfig
> ---
> [color "diff"]
> whitespace = red reverse
> [core]
>  whitespace=-indent-with-non-tab,trailing-space,cr-at-eol,tab-in-indent
> ---
> 
> Thanks,
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> The highlight isn't telling you what changed on the line. It's telling
> you that this added line has trailing whitespace, and your
> core.whitespace config value is set such that this is considered an
> error.
>
> -Kevin Ballard