Feature request: additional_arguments as a function

[coffebar]

It would be great to get a more flexible config:

{
  name = "rg",
  keyword_length = 3,
  option = {
    additional_arguments = function(cwd)
      if vim.fn.expand(cwd) == vim.fn.expand("~") then
        return "--max-depth 6 --ignore-file ~/.config/nvim/ignore.rg"
      else
        local args = "--max-depth 3"
        if vim.fn.filereadable(vim.fn.expand(cwd .. "/.gitignore")) == 1 then
          args = args .. " --ignore-file '" .. cwd .. "/.gitignore'"
        end
        return args
      end
    end,
  },
}

[lukas-reineke]

Yeah, would be nice.
I want to do a bit of refactoring of the repo anyway. I'll add this.