VS2012 has a built-in differ, which allows the current file to be edited with full IntelliSense (as long as it was opened from the project)
Can GitSCP use this in VS2012?
(Either from right-click, Compare, and perhaps also embedded in the right pane)
To use vs 2012's built differ, the command is devenv /diff .
Currently GitSCP supports setting the path the diff tool, but it does not support command line options. It is being work on.
Thanks for the hint. I'll search VS API then.
Added support for using Visual Studio 2012's own diff tool. Fixes #32.
(Requires installation of VS 2012 SDK to compile http://www.microsoft.com/en-gb/download/details.aspx?id=30668)