I think I'm gonna go and borrow the vim-classic derivation from nixpkgs unstable until 26.11. I need an emergency editor on my VPSes, and Emacs is an overkill, I don't always have the option to TRAMP from home, vim is slop, neovim is fash and slop, I tried evil-hx, but it required setting COLORTERM, chosing a theme, and still didn't work out of the box with keybinds I'm used to.
So vim-classic it will be.
Yes, I know ed(1) is the standard unix text editor. I can use it if I need to, I wrote hundreds of thousands of lines of production code in it over the years. It's not the editor I want in this case.