No syntax when dirbuf open a file

[basilgood]

Hi! Something has gone wrong since b5b68bf
The files opened by bufdir no longer have syntax and it's necessary to reload buffer for the syntax to appear. (:e<cr>)
I tested the 7c58e36 and all is ok.
NVIM v0.7.0

minimal init.lua with the latest dirbuf good commit

local on_windows = vim.loop.os_uname().version:match 'Windows'

local function join_paths(...)
  local path_sep = on_windows and '\\' or '/'
  local result = table.concat({ ... }, path_sep)
  return result
end

vim.cmd [[set runtimepath=$VIMRUNTIME]]

local temp_dir = vim.loop.os_getenv 'TEMP' or '/tmp'

vim.cmd('set packpath=' .. join_paths(temp_dir, 'nvim', 'site'))

local package_root = join_paths(temp_dir, 'nvim', 'site', 'pack')
local install_path = join_paths(package_root, 'packer', 'start', 'packer.nvim')
local compile_path = join_paths(install_path, 'plugin', 'packer_compiled.lua')

local function load_plugins()
	require('packer').startup {
		{
			'wbthomason/packer.nvim',
		{
			'elihunter173/dirbuf.nvim',
			commit = '7c58e36e53f0108f5a6d18ca66ccd64c85449953',
			config = function()
				require('dirbuf').setup({ sort_order = 'directories_first' })
			end,
		},
		},
		config = {
			package_root = package_root,
			compile_path = compile_path,
		},
	}
end


if vim.fn.isdirectory(install_path) == 0 then
  vim.fn.system { 'git', 'clone', 'https://github.com/wbthomason/packer.nvim', install_path }
  load_plugins()
  require('packer').sync()
else
  load_plugins()
  require('packer').sync()
end
vim.opt.tabstop = 2
vim.opt.shiftwidth = 2

[elihunter173]

Doh! I know exactly what this is. I can't believe I missed this in my testing. Fixed.