I just wanted to make sure you’re aware that there are existing ElixirLS-powered vim/neovim extension that already support fetching Elixir documentation:

• GitHub - prabirshrestha/vim-lsp: async language server protocol plugin for vim and neovim · GitHub
• GitHub - elixir-lsp/coc-elixir: Elixir language server extension based on elixir-ls for coc.nvim · GitHub
• GitHub - neoclide/coc.nvim: Nodejs extension host for vim & neovim, load extensions like VSCode and host language servers. · GitHub

But if you want to create to create this extension for learning purposes, or as an improvement (such as being lighter-weight), then please go ahead

Yes, I am aware of it and I’m using it, it’s a fantastic tool.

That’s the plan, I am working through the guide right now and I want to try my hands at something useful next. Plus, I prefer reading documentation in a separate buffer I can have open to the side rather than a floating window. I could have probably hacked something using the Lua API of the built-in client, but this seems more interesting. Plus it would work even without a language server running.

Take a look at h implementation: elixir/lib/iex/lib/iex/introspection.ex at d8d89b431e197dd230ce01bc20f4656d9ef24e5c · elixir-lang/elixir · GitHub

It seems to be using Code.fetch_docs underneath