BUG: Error while focusing Neotree window on insert mode about neo-tree.nvim

[luisjakon]

Hi, Just here in case anyone else is having similar issues with switching and restoring user state for command modes when going in and out of neo-tree with a mouse clicker or other means...

Thnxs!

-- initialize user command-mode state (just for neo-tree)
vim.g.forgetfulme = "n"

return {
  "nvim-neo-tree/neo-tree.nvim",
  config = function()
    require("neo-tree").setup {
      ...
      -- Set-up event handlers to manage and restore user command-mode state
      event_handlers = {
        {
          event = "neo_tree_buffer_enter",
          handler = function()
            vim.g.forgetfulme = vim.api.nvim_get_mode().mode
            if vim.g.forgetfulme == "i" then vim.cmd "stopinsert" end
          end,
        },
        {
          event = "neo_tree_buffer_leave",
          handler = function()
            if vim.g.forgetfulme == "i" then vim.cmd "startinsert" end
            vim.g.forgetfulme = vim.api.nvim_get_mode().mode
          end,
        },
      },
    }
  end,
}

[pysan3]

Are you sure you want a plugin to mess around with your mode automatically?

[luisjakon]

Hi! thnxs @pysan3. Good point.

Perhaps it could be temporarily store the current mode when focus is moved to the neotree window and restore it when it leaves.

Otherwise, having focus while on insert mode has no value...adding an extra unnecessary keystroke to exit to normal mode and do something with it. Makes sense?

[cseickel]

I don't think it is the place of any plugin to control the mode. Here's what I would suggest:

1. If you are insert mode and done with your edits, exit insert mode. Always.
2. If you have a mapping that allows you to switch windows while still in insert mode, you should update that mapping to leave insert mode before switching windows.
3. Clicking with a mouse: 😱
4. ...but seriously, see 1.

All that being said, the best solution is to create an autocmd to run stopinsert when you switch windows:

augroup ForgetfulMe
  autocmd!
  autocmd WinEnter * :stopinsert
augroup end

If someone wanted to put up a PR that does that autocmd specifically for neo-tree windows, I would probably accept it.

[pysan3]

If you enter help page I think you'll get the same error. I don't think that is a bug but a feature so same for us.

[luisjakon]

Ok. Thanks for the response!

I'm pretty new at this so I thought I'd follow up with your suggestion with something like this, but somehow it is not triggering on neovim...may need to spend more time with it...Thnks!

vim.g.forgetfulme = "n"

vim.api.nvim_create_augroup("ForgetfulMe", { clear = true })

vim.api.nvim_create_autocmd({ "BufEnter", "FocusGained" }, {
  group = "ForgetfulMe",
  pattern = { "neo-tree" },
  callback = function()
    vim.g.forgetfulme = vim.api.nvim_get_mode().mode
    if vim.g.forgetfulme == "i" then
      vim.cmd "stopinsert"
    end
  end,
})

vim.api.nvim_create_autocmd({ "BufLeave", "FocusLost" }, {
  group = "ForgetfulMe",
  pattern = { "neo-tree" },
  callback = function()
    if vim.g.forgetfulme == "i" then 
      vim.cmd "startinsert" 
    end
    vim.g.forgetfulme = vim.api.nvim_get_mode().mode
  end,
})

[pysan3]

Use neo-tree's event handlers instead of autocmds.

:h neo-tree-events