Explore the parent directory of a file in netrw and escape it easily

gistfile1.txt

function OpenParentDirectory()
  if vim.bo.filetype == "netrw" then
    vim.cmd("bd!")  -- close netrw if already open
    return
  end
  local path = vim.fn.expand("%:p:h")
  if path == "" then return end
  vim.cmd("Ex " .. vim.fn.fnameescape(path))
  local buf = vim.api.nvim_get_current_buf()
  vim.defer_fn(function()
    if vim.bo[buf].filetype == "netrw" then
      vim.keymap.set("n", "<Esc>", "<cmd>bd!<CR>", { buffer = buf, silent = true })
    end
  end, 30)
end

vim.keymap.set({ "n", "v" }, "<leader>e", OpenParentDirectory, { desc = "Toggle netrw in parent dir" })