For years, the text editors Vi (and its successor Vim) and Emacs have been seen as rivals. In recent years, the rivalry has been largely a subject of jokes, but in the days before the desktop, it was serious enough, and the subject of endless flame wars. Even now, you hardly count as a hacker if you haven’t taken sides, although taking sides can be dangerous in itself; I know of at least one Emacs user who lost their chance of a job at a company where the standard was Vim. Nobody seems to have noticed yet that the editor wars are over, or that Vim won handily.