[PATCH] 'u' (Undo) command support for vi

[Jody Bruchon]

On 3/18/2014 6:15 PM, Jody Bruchon wrote:
> As promised earlier, I have written undo support for BusyBox 'vi'.

I forgot to add my sign-off to this patch; please tack it on if 
committed to Git.

Signed-off-by: Jody Bruchon <jody at jodybruchon.com>