Fix for E490: No fold found upon session restore

[adrian5]

This is a long standing issue for me, that I think is unrelated to persisted.nvim but nevertheless hard to track down. I've been using this workaround for a year or so and realized I should share it in case it's of help to anyone:

vim.api.nvim_create_autocmd("User", {
  desc = "Recompute folds after session is loaded",
  pattern = "PersistedLoadPost",
  group = vim.api.nvim_create_augroup("PersistedHooks", {}),
  callback = function()
    vim.defer_fn(function()
      vim.cmd("normal! zx")
    end, 50) -- Small delay seems necessary
  end
})

My vim.opt.sessionoptions also doesn't contain folds.

Related issues are telescope #699 and nvim-treesitter #1337.

P.s. nvim-ufo is another option for those who “just want it fixed” and move on.