Unexpected behaviour when opening session with nvim-tree

[brapifra]

Hey!

First of all, congrats on the plugin :)

Unfortunately, I encounter this E95: Buffer with this name already exists error when opening nvim after closing it with nvim-tree open:

Not sure if it's something that needs to be fixed on your end or on nvim-tree's end though. Let me know!

[rmagatti]

Hey @brapifra I'm guessing this is because an nvim-tree buffer doesn't support being saved on a session, at least with your current sessionopts.

I don't use nvim-tree so I wouldn't know much further than that. What I can tell you is that this plugin merely wraps mksession functionality, so I doubt it's something I could fix on my end.

That being said, what I've seen people do is use the session hooks to close any tree-like plugin's windows before saving the session so you at least don't see what you're currently seeing.

I hope that helps at least a bit 😄

[brapifra]

Thanks for the info @rmagatti!
Makes sense, I'll give that a try :)

[sujaybokil]

Hii @brapifra, I had the same issue which I solved through hooks and I will leave my config down here for you which would solve it hopefully. Adding the last 2 options (which are hooks) would take care of the issue.

local opts = {
  log_level = 'info',
  auto_session_enable_last_session = false,
  auto_session_root_dir = vim.fn.stdpath('data').."/sessions/",
  auto_session_enabled = false,
  auto_save_enabled = false,
  auto_restore_enabled = false,
  auto_session_suppress_dirs = nil,
  pre_save_cmds = {"tabdo NvimTreeClose"},
  post_restore_cmds = {"tabdo NvimTreeRefresh"}
}

require('auto-session').setup(opts)

[brapifra]

Hey @sujaybokil
For some reason, I can't make your config working on my neovim. I did this and it works like a charm:

    use {
      "rmagatti/auto-session",
      config = function()
        require("auto-session").setup {
          pre_save_cmds = {"NvimTreeClose"}
        }
      end
    }

[rmagatti]

Closing since it looks like hooks cover the necessary cases.

[mattleong]

pre_save_cmds = {"NvimTreeClose"}

Can open a new issue if needed. But this hook alone doesn't properly seem to close nvim-tree anymore. Can anyone else verify?

[egidijusz]

pre_save_cmds = {"NvimTreeClose"}

Can open a new issue if needed. But this hook alone doesn't properly seem to close nvim-tree anymore. Can anyone else verify?

I can confirm.

[rmagatti]

Hey guys, so unless there's an issue with the hook itself, this is probably something on the nvim-tree side of things. Let me know if I can help with anything though!

[r7vme]

Works for me

let g:auto_session_pre_save_cmds = ["lua require'nvim-tree'.setup() | tabdo NvimTreeClose"]

[im-n1]

Works for me

let g:auto_session_pre_save_cmds = ["lua require'nvim-tree'.setup() | tabdo NvimTreeClose"]

Cannot confirm on nvim 0.5

[r7vme]

Actually seems smth was updated, and today with newer neovim or plugins I fixed it to smth like

let g:auto_session_pre_save_cmds = ["lua require'nvim-tree'.setup()", "tabdo NvimTreeClose"]

[im-n1]

still no luck

[timtyrrell]

On neovim nightly....

This does not work:

require('auto-session').setup {
  -- other config above
  pre_save_cmds = {"tabdo NvimTreeClose"}
}

This works:

require('auto-session').setup {
  -- other config above
  pre_save_cmds = {"lua require'nvim-tree'.setup()", "tabdo NvimTreeClose"}
}

"Works" means if I close neovim with a nvim-tree buffer open, when I reopen vim, that buffer is gone and not open