Take a look at my fork. (POSIX Shell fork)

[Nomagno]

I've made a fully POSIX Shell compliant fork you can take a look at here. While I have no intention of opening a pull request, I do have some interesting features like better ASCII detection, and a bit of a hack that replaces the sleep with a blocking read timeout, but ends up being a very elegant solution to sneak fully functioning user input into the current codebase. Feel free to take a look.

[metal3d]

It's a pitty that you don't want to make a PR :)