Sorry I'm going to go ahead and answer my own question: $ git difftool $(git merge-base topic1 master) -- Path/SourceFile.cpp I removed 'HEAD' from the command and now it picks up my changes and compares to my working copy version (which is actually what I wanted). I thought HEAD would point to my working copy version but that's wrong. Sorry for the superfluous post! On Tue, Feb 25, 2014 at 9:22 AM, Robert Dailey <rcdailey.lists@xxxxxxxxx> wrote: > I have a branch called topic1 that is based on 'master'. For a > particular file in my topic branch, I want to revert some changes by > using my diff tool. I do this by comparing the original revision of > the file with HEAD like so: > > $ git difftool $(git merge-base topic1 master) HEAD -- Path/SourceFile.cpp > > When I make changes to the right side (HEAD) through my diff tool, and > exit, the changes aren't picked up and applied to my working copy. > Since I'm modifying HEAD, I think it should carry over the changes I > make. Is this by design or a defect? I don't know how else to > selectively revert changes to a file through my diff viewer. -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html