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Documentation

We are generating docs based on the tree sitter syntax tree. TJ wrote a grammar that includes the documentation in this syntax tree so we can do take this function header documentation and transform it into vim documentation. All documentation that is part of the returning module will be exported. So example:

local m = {}

--- Test Header
--@return 1: Returns always 1
function m.a() -- or m:a()
  return 1
end

--- Documentation
function m.__b() -- or m:__b()
  return 2
end

--- Documentation
local c = function()
  return 2
end

return m

This will export function a with header documentation and the return value. Module function b and local function c will not be exported.

For a more in-depth look at how to write documentation take a look at this guide: how to This guide contains all annotations and we will update it when we add new annotations.

What is missing?

The docgen has some problems on which people can work. This would happen in https://github.com/tjdevries/tree-sitter-lua and documentation of some modules here. I would suggest we are documenting lua/telescope/builtin/init.lua rather than the files itself. We can use that init.lua file as "header" file, so we are not cluttering the other files. How to help out with documentation:

Auto-updates from CI

The easy way would be:

  • write some docs
  • commit, push and create draft PR
  • wait a minute until the CI generates a new commit with the changes
  • Look at this commit and the changes
  • Modify documentation until its perfect. You can do git commit --amend and git push --force to remove the github ci commit again

Generate on your local machine

The other option would be setting up https://github.com/tjdevries/tree-sitter-lua

  • Install Treesitter, either with package manager or with github release
  • Install plugin as usual
  • cd to plugin
  • mkdir -p build parser sadly does doesn't exist
  • make build_parser
  • ln -s ../build/parser.so parser/lua.so We need the shared object in parser/ so it gets picked up by neovim. Either copy or symbolic link
  • Make sure that nvim-treesitter lua parser is not installed and also delete the lua queries in that repository. queries/lua/*. If you are not doing that you will have a bad time!
  • cd into this project
  • Write doc
  • Run make docgen
  • Repeat last two steps