nested X server fullscreen toggle?
I'm using a nested X server (Xephyr) and it would be nice if there was a way to toggle between windowed and fullscreen (like when you hit F8 and choose fullscreen on xvnc4viewer), but I don't seem to be able to find anything which does that. I would be willing to use Xnest, if that worked, and since gdmflexiserver
often uses Xnest as a backend, any approaches which work with that would work here.
I've tried xrandr, but that only seems to resize the windowed version, not flip from fullscreen to windowed.