@mkwadee well, some are better than emacs

by display I actually don't mean the UX of the visual rendering, I mean that if you have a line 10k+ characters long, emacs will start to choke on its display rendering code.

The reason for this, it turns out, is algorithm choice: gap buffers aren't good at this https://emacs.stackexchange.com/questions/598/how-do-i-prevent-extremely-long-lines-making-emacs-slow