Since I was delving into the Arc codebase and my Lathe codebase anyway, I made a bunch of fixes to Anarki, Anarki's stable branch, arc/nu's arc/3.1 language, and Rainbow.js today. It's enough to run a simple check of Lathe's module system on Windows, which meant I fixed a bunch of Windows bugs in particular! My Lathe sanity checks also worked fine on Rainbow, Jarc, ar, and the official Arc 3.1.