May be use Russ'es Watch command?

> On Feb 15, 2017, at 5:05 AM, Paul Lalonde <paul.a.lalonde@gmail.com> wrote:
>
> I know I'm not the only acme user who uses Git extensively :-)
> Is there some way to tell if a file is changed on disk that is open in an editor window?  I frequently change branches and I often find myself editing stale versions.  I notice when comes time to Put, but that's a bit late.
>
> Any tips to share?
>
> Paul