This already happened, decades ago. Xemacs was widely deployed for a while. For that matter, vim is the most popular of several editors that did this to vi. (El

This already happened, decades ago. Xemacs was widely deployed for a while. For that matter, vim is the most popular of several editors that did this to vi. (Elvis, stevie, nvi, others probably.) At any rate, I think Xemacs is still more or less maintained, but I haven’t seen anybody use it in decades.