Windows Git will not start external diff at all

[Jaakko Pääkkönen <jaakko.t.paakkonen@xxxxxxxxx>]

Hi

I am using beyond compare, but it does not really matter which one
because even I create a dummy script as a external diff program, it
will not get called ever. Only internal diff is started.

Re-installing git will not remove the problem. I am using the latest git

Any hints how I can debug git difftool?

--jaakko