[aidenn0]

Indeed. Emacs and Vim have both supported this for a long time. I used it in vim in the late '90s and Emacs usually got features like this before vim.

I was working on integrating a language with a "programmers editor" <name omitted to protect the guilty> and asked how to extend the editor to indent a new language. The response was "it should already support all C/Java like languages with the configuration format." My response "this isn't a C-like language". The community response "Uh, I guess write a plugin that installs a hook on the carraige-return key and manually position the cursor?" It blew my mind that anything billed as a programmer's editor couldn't be customized for doing this already...