How to specify autocmd for plugin?

[alexmozaidze]

I want to specify an autocmd for a plugin, but I can't figure out how to do it. event seems to only lazy-load, but not execute some custom callback.

[Shougo]

You should explain it more clearly.
Upload the example is better.

[alexmozaidze]

I want to define autocmd's that are only loaded with the plugin.

{
  "foo/bar.nvim",
  event = {
    {
      {"VimLeavePre"},
      callback = function()
        -- ...
      end,
    },
    -- more autocmd's...
  }
}

I can define autocmd's outside the plugin spec, but then, when I remove the plugin, Neovim would error if the autocmd has require("bar") in its callback.

Besides, it's much easier to manage all the plugin-specific configuration when it's all in one place.

[dpetka2001]

The event keyword is being used to determine the event the plugin should be lazy-loaded upon. It's not for setting up Neovim autocmds. You can use the config function for this and just set up the autocmd you want in the config function of the plugin inside its spec.

[alexmozaidze]

It feels a tad bit clunky to define a function for such a common construct such as an autocmd, but I guess there is no other way.