[ESS] distinguish busy from non-busy waiting

[Vitalie Spinu]

>> On Thu, Nov 26 2015 14:30, Andreas Leha wrote:

> So, you are basically suggesting that emacs should look at top for me, right?
> That would be possible, I guess.  But still, that might give wrong answers if
> R has to wait for I/O a lot, for instance.

Maybe this is a feature request for R folks. If R is waiting for promt, it
should output a different prompt symbol from when the engine is actually
running.


  Vitalie