BUG: `hide_root_node = true` and creating file freezes nvim

[pysan3]

Hi, Thanks for the awesome plugin :)

I stumbled across a fatal error that freezes my nvim completely with the following setup.

Reproduce

• Config

require("neo-tree").setup({
  hide_root_node = true,
  filesystem = {
    follow_current_file = true,
  },
})

• Example File Structure

- root/
  - dir-A/
    - dir-A-B/
      - file-A-B-C.lua <- current file
  - file-B.lua

1. Open a file that is 2 or more deeper than cwd. (file-A-B-C.lua)
2. Open Neotree with :Neotree toggle<CR>.
3. (cursor is focused on file-A-B-C.lua on open by setting config filesystem.follow_current_file = true)
4. Press G to go to the end of buffer. (cursor focus on file-B.lua)
5. Press a or A to create new file / dir.
6. Nvim freezes.

Notes

• Not happening with hide_root_node = false.
• neo-tree
  • branch: v2.x
  • commit: 4ad0458

Details

• nvim --version output:

  • NVIM v0.8.0-dev+nightly
  • Build type: RelWithDebInfo
  • LuaJIT 2.1.0-beta3

• Operating system: 5.10.102.1-microsoft-standard-WSL2

• Screen Record

[pysan3]

Oh, it seems to be working until this commmit. 747de4f

So the latest commit should be the one causing the error.

[cseickel]

There are actually several commands where I would expect an error. The issue is that many commands assume that there is a parent folder, which has always been true up until the option to hide that root folder was added.

I'll have to rewrite these to work for root level nodes.

[MunifTanjim]

@cseickel if NuiTree supports returning nil from prepare_node, would that help in this situation? The root node would still be there, it just won't be rendered anymore if prepare_node returns nil for it.

Update: Just merged MunifTanjim/nui.nvim#144

[cseickel]

@cseickel if NuiTree supports returning nil from prepare_node, would that help in this situation? The root node would still be there, it just won't be rendered anymore if prepare_node returns nil for it.

YES that will help @MunifTanjim ! Thanks for letting me know about that, it really simplifies everything.

[pysan3]

I checked the related commit and it seems to be fixed!!

Thank you very much @cseickel and @MunifTanjim !!