vim.api.nvim_create_autocmd({ "BufNewFile", "BufRead" }, {
    pattern = "*.conf",
    callback = function(self)
        local ft_def = { conf = "conf" }
        for ext, ft in pairs(ft_def) do
            if ext == vim.fn.fnamemodify(self.match, ":e") then
                vim.bo.ft = ft
                break
            end
        end
    end,
})