Windows Git will not start external diff at all

Jaakko Pääkkönen· Sep 6, 2016, 15:57 UTC · lore

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

Johannes Schindelin· Sep 6, 2016, 16:34 UTC · re: Jaakko Pääkkönen · lore

Re: Windows Git will not start external diff at all

Hi Jaakko,

On Tue, 6 Sep 2016, Jaakko Pääkkönen wrote:

> 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.

Any chance you can come up with an MCVE [*1*] using a dummy script?

> 
> Re-installing git will not remove the problem. I am using the latest git
> 
> Any hints how I can debug git difftool?

Sure. First hint: set GIT_TRACE=1. Next hint: difftool is a shell script, so you can modify it, say, by inserting a `set -x` which will trace the commands that are called.

Ciao, Johannes

Footnote *1*: http://stackoverflow.com/help/mcve