Rust's IDE story is starting the year off with a bang. :) It's taken me until now to realize that the protocol is semi-standardized: https://github.com/Microsoft/language-server-protocol . Are Rust and Typescript the only two languages with implementations of this protocol so far? (EDIT: nevermind, found http://langserver.org/ , which implies there are quite a lot of these.)

I'm also fascinated to hear that it's using both Racer and rustc to provide autocomplete. Is there any long-term plan to provide "quick and dirty" info from the compiler itself rather than from Racer? EDIT 2: Ah, the final paragraph addresses this. That's what I get for commenting before I'm done reading. :P

Are there any implementations of the language server protocol for vim or emacs?

prabir

nvim-langserver-shim internally uses an older version of https://github.com/prabirshrestha/vim-lsp I'm hoping in couple of weeks vim-lsp will be stable and so that I can start contributing to nvim-langserver-shim. Currently I'm developing vim-lsp independently.

It already works asynchronously in neovim and vim on windows, mac and linux. You can follow up with the discussion at https://github.com/neovim/neovim/issues/5522 (you can see some of the progress in thread in gifs)