There are community-built editor supports. For example,
- Emacs: https://github.com/leanprover-community/lean4-mode
- Neovim: https://github.com/Julian/lean.nvim
I'm using the Emacs lean4-mode and it's pretty good.
Re:A Perfectable Programming Language
by adamnemecek on Sunday April 12, 2026 @11:16PM
(#47747152)
It makes complete sense to polish that usecase.
Lol