This is a bit of an experiment to see if simply handling 'v' in the
bindings will work or has any bugs not going through ReceivedCharacter.
The change is necessary though to prevent 'v' from being written in
front of every clipboard paste.
This was largely an experiment to see whether writing and reading from a
separate thread was causing terminal state corruption as described in
https://github.com/jwilm/alacritty/issues/9. Although this doesn't seem
to fix that particular issue.
Keeping this because it generally seems more correct than
reading/writing from separate locations.
Also enables debug symbols in release profile by default. Until
Alacritty ships, there's going to be lots of perf analysis which needs
debug symbols.
The PriorityMutex low priority method was never used. Now it's just a
fair mutex.
This is only like the third time I've made this change. The issue of
having a blank screen at startup is due to x11 event loop + glX
interactions. Not sure what the problem is specifically, but
glXMakecurrent was blocking until the x11 event loop advanced.
The input and rendering are able to live on the same thread while still
removing unnecessary renders due to the
glutin::WindowProxy::wakeup_event_loop() method. The PtyReader just
kicks the event loop when there's something to do; otherwise, the event
loop just waits for something to happen and _doesn't_ draw in free run
mode.
