I know that I can get the documentation of a symbol in iex by typing h whatever, but is there a way to get this documentation programmatically? For context, I use Neovim and I would like a way of reading the documentation inside an editor buffer instead of a REPL running inside a terminal shell. I have already written info.vim which does similar thing for GNU Info documents. Neovim makes it possible to write remote plugins in Elixir, so if there is some Elixir module to get the documentation as a text string it should be fairly simple to pull off.
Great, that works! Code.fetch_docs(:'Elixir.Kernel') gives me structured data which I can work with. One more question, how do I specify a function? I have tried Code.fetch_docs(:'Elixir.Kernel.is_atom/1'), but I get {:error, :module_not_found}, same thing without the /1 part.
EDIT: Never mind, I need to look at the implementation of Ex.Introspection.h/1, not Ex.Introspection.h/1.
You can use Kernel, no need for cumbersome and non-standard :'Elixir.Kernel'. Btw Kernel is an alias that resolves to :"Elixir.Kernel". :Kernel is just an atom.
I just wanted to make sure you’re aware that there are existing ElixirLS-powered vim/neovim extension that already support fetching Elixir documentation:
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.