I've worked with many programmers who use Vim, although I've personally never grokked it. I've used Emacs for years for editing/programming, running shells and

I've worked with many programmers who use Vim, although I've personally never grokked it. I've used Emacs for years for editing/programming, running shells and reading news/email. I've attended two universities in the UK and it was used by default for some of their programming/computational courses; this was in different departments (Physics and CS), a decade apart. Emacs has been used to build user interfaces (e.g. ProofGeneral, which was the de facto interface for theorem provers like Coq and Isabelle for many years). Some programming languages de-facto assume they're being written via their Emacs mode (notable Agda; similar to how some JVM languages assume they're being written in Eclipse or IntelliJ). Years ago I inherited an academic research project which happened to be written entirely in Emacs Lisp.