> Modern text editors have higher latency than 42-year-old Emacs. Text editors! What can be simpler? On each keystroke, all you have to do is update a tiny rect

> Modern text editors have higher latency than 42-year-old Emacs. Text editors! What can be simpler? On each keystroke, all you have to do is update a tiny rectangular region and modern text editors can’t do that in 16ms. Modern text editors have to deal with proportional font, right to left writing, anti-aliasing, and a big bag of Unicode related issues (Arabic is going to break all assumptions you have on language and text editing) Fantastic read on this subject from few months ago: https://news.ycombinator.com/item?id=21384158 https://news.ycombinator.com/item?id=21384158