That article seems somewhat out of date now. For a more up to date approach I'd suggest Drew Neil's Modern Vim book (still in beta)[1] and using async language

That article seems somewhat out of date now. For a more up to date approach I'd suggest Drew Neil's Modern Vim book (still in beta)[1] and using async language server plugins[2] [1] https://pragprog.com/book/modvim/modern-vim https://pragprog.com/book/modvim/modern-vim [2] https://langserver.org/ https://langserver.org/