See the complaint on #4039. This doesn't fix that particular
issue (it's somewhat unrelated), but does solve around
a file parsing problem reported by @void-in
That's what I get for just committing willy-nilly with a fresh install
of Gvim for Windows.
Also, this is an experiment to see if linefeeds are being respected in
this editor Window. I doubt it will be, given GitHub's resistence to
50/72 as a sensible default.