80x86

It would be nice if PNG supported no compression. That is handy in many situations.

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.

rename is atomic, but it is not guaranteed to be durable. In order for rename to be durable, I've learned that you have to fsync the parent directory.

I was saddened when I learned this. I used to use this old trick for a lot of my systems. I learned it from reading the code of old well-written unix systems programs.