When I type git diff, I want to view the output with my visual diff tool of choice (SourceGear \"diffmerge\" on Windows). How do I configure git to do this?
git diff
you can use git difftool.
git difftool
for example if you have meld, you can edit the branchs master and devel by:
master
devel
git config --global diff.external meld git difftool master..devel