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Hi,

I noted that while being in async_stdin "mod" the keys() method does not return proper events. For example if I use the code below, Left key is not recognized. If I use let mut it = stdin.keys() instead of termion::async_stdin() this works well. Can someone explain me why ?

use std::io;
use std::io::{stdin, stdout, Read, Write};
use termion;
use termion::event::Key;
use termion::input::TermRead;
use termion::raw::IntoRawMode;

fn main() -> Result<(), io::Error> {
    let mut stdout = io::stdout().into_raw_mode()?;
    let mut stdin = termion::async_stdin();
    // let mut stdin = io::stdin();
    let mut it = stdin.keys();
    loop {        
        let b = it.next();
         
        if let Some(event) = b {
            match event? {
                Key::Left => println!("LEFT"),
                Key::Char('q') => break,          
                _ => {}
            }     
        }
        stdout.flush()?;
    }
    Ok(())
}