local completion_state = {
  enabled = true, -- current state
  backup = { -- store the original values so we can restore them
    omnifunc = nil,
    completefunc = nil,
    completeopt = nil,
  },
}

vim.keymap.set("n", "<leader>co", function()
  if completion_state.enabled then
    -- ----- DISABLE -----
    completion_state.backup.omnifunc = vim.opt_local.omnifunc:get()
    completion_state.backup.completefunc = vim.opt_local.completefunc:get()
    completion_state.backup.completeopt = vim.opt_local.completeopt:get()

    -- Clear the sources
    vim.opt_local.omnifunc = ""
    vim.opt_local.completefunc = ""

    -- Hide the menu even if something tries to show it
    vim.opt_local.completeopt = { "noinsert", "noselect" }

    completion_state.enabled = false
    print("⛔  Autocompletion disabled")
  else
    -- ----- ENABLE -----
    vim.opt_local.omnifunc = completion_state.backup.omnifunc
    vim.opt_local.completefunc = completion_state.backup.completefunc

    -- Restore the previous `completeopt` (or a safe default)
    vim.opt_local.completeopt = completion_state.backup.completeopt or { "menu", "preview", "noinsert", "noselect" }

    completion_state.enabled = true
    print("✅  Autocompletion re‑enabled")
  end
end, { desc = "Toggle all autocompletion (omnifunc, completefunc, menu)" })