Message11343

@James Thanks for running that. No, I didn't see them because they're on the expected failures list for Windows 🤦. I'm happy to note that in test_os_jy that's the only failure (now, and for French). test_runpy fails for me on unlink(), masking whatever else happens. But that's some weird escaping!

If there's a Cygwin user out there, it would be good to know I haven't broken the launcher for you. There is some Cygwin-specific code and I was having mintty problems (before and after).