> Basically I would like to be able to block until the next event but
don't acually do anything with the event (e.g. don't run any callbacks)
In Neovim we use a separate queue to achieve this effect. Here's a
high-level overview of what happens:
- uv_run(UV_RUN_{ONCE,NOWAIT}) is called
- Any libuv callback that is invoked pushes event data to an event queue
- After uv_run returns, we check if there are events in the queue, and if
so process them.
We do this mainly because uv_run doesn't support recursion, but Neovim has
a lot of legacy code that calls input functions recursively. Also, it was
the cleanest way I found to embed libuv event loop into vim's own event loop
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