[request] want the option to specify a FindFailed handler, that is called on FindFailed

[RaiMan]

Hi,

This is more of a feature request (unless a way exists to closely mimick this).

It would be nice to be able to specify a user defined handler as the action in case Sikuli fails to find an image. When we setup a set of tests to run on a periodic basis, I would imagine that many users would want to capture a screenshot of the application window on a failure. If we could specify a screen grabbing function as the action to be taken on a failure, that would save some typing with each test to invoke it explicitly as part of the exception handling code.

Thanks.