This is interesting, thanks for sharing this. I will look at the JOE editor to see how this is implemented.

I have thought about this problem off and on. Usually the conclusion I come to is that we need a new tty interface. The old tty interface has too much legacy baggage. For example l, in addition to the buffering problem, there is also the key input problem. Ideally, a newer interface would provide scan codes instead of the escape sequences. Not having to deal with ‘escape’ like we do today would simplify things.