Just to be clear, although you can use emacs from a terminal, it’s not the default and not what most people do. So a terminal emulator opened in emacs isn’t really “nested”
sure. this still ties you to emacs as an editor though. the interesting part of emacs to me is the meta-programming with buffers, not the editor itself; i want to be able to plug-and-play editors and keep the meta-programming.
