vim (and emacs) can do that without the need for a terminal multiplexer (though in vim you need to use a "plugin" for it, or, at least, you used to, and I'm sur

vim (and emacs) can do that without the need for a terminal multiplexer (though in vim you need to use a "plugin" for it, or, at least, you used to, and I'm sure the new async functionality in vim 8 has improved the experience quite a bit)