Can anyone explain to me why the Finder doesn't have this built-in? Insanity. For what it's worth, PathFinder includes this feature as well.

«Git is not an evolution of SVN. It is entirely different. Git is a distributed revision control system – everybody working on a project has their own full copy of the repository and its entire history.»

But it goes further. Lurking in the scary bowels of Mac OS X for all these years has been this little command, which brings back single-application mode. (Go ahead and try it - it's easily reversed.)