- Professionally, much of my output is in Python--everyone else in the shop knows it--with a smattering of C when it's warranted. That said, I'm an Emacs user,

- Professionally, much of my output is in Python--everyone else in the shop knows it--with a smattering of C when it's warranted. That said, I'm an Emacs user, and I do write libraries and custom modes in Elisp to do things I find useful. In the hopes that others will, too, I make them available to my colleagues. - I use Common Lisp at home for personal projects when shell scripts no longer cut it. When the Python 3 storm hit my ~/bin, it occurred to me that one of CL's best features is that its specification has been stable for several years (even while the ecosystem has evolved considerably).