Avery Pennarun is tracking Windows using Git. The post is just insane.
I had to try it, of course. I went into ~/win, typed “git init”, and “git add .”, and “git commit”. Ta da, a working git repository with my fresh Win98 install.
Then I created separate branches, one for each version of Office, and installed them one by one. And now I can easily test new versions of my plugin: “git checkout office2000; win” or “git checkout office97sr2; win”.