Nvim freezes by inifinite loop of nvim-tree when working on C:\Users\{username}\AppData\Local

[regomne]

Description

When nvim tree tries to dir_up to C:\Users\{username}\AppData\Local by mapped key in Windows, nvim freezes and cpu usage 100% and memory usage continues increasing.

Neovim version

NVIM v0.8.2
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3

Operating system and version

Windows 10

nvim-tree version

215b29b

Minimal config

vim.cmd [[set runtimepath=$VIMRUNTIME]]
vim.cmd [[set packpath=d:/temp/nvt-min/site]]
local package_root = "d:/temp/nvt-min/site/pack"
local install_path = package_root .. "/packer/start/packer.nvim"
local function load_plugins()
  require("packer").startup {
    {
      "wbthomason/packer.nvim",
      "nvim-tree/nvim-tree.lua",
      "nvim-tree/nvim-web-devicons",
      -- ADD PLUGINS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE
    },
    config = {
      package_root = package_root,
      compile_path = install_path .. "/plugin/packer_compiled.lua",
      display = { non_interactive = true },
    },
  }
end
if vim.fn.isdirectory(install_path) == 0 then
  print "Installing nvim-tree and dependencies."
  vim.fn.system { "git", "clone", "--depth=1", "https://github.com/wbthomason/packer.nvim", install_path }
end
load_plugins()
require("packer").sync()
vim.cmd [[autocmd User PackerComplete ++once echo "Ready!" | lua setup()]]
vim.opt.termguicolors = true
vim.opt.cursorline = true

-- MODIFY NVIM-TREE SETTINGS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE
_G.setup = function()
  require("nvim-tree").setup {
	  view = { mappings = { list = { key = {'-'}, action = 'dir_up' } } }
  }
end

Steps to reproduce

1. run Windows Terminal, and cd to C:\Users\{username}\AppData\Local\Temp
2. nvim -nu d:\temp\nvt-min.lua
3. :NvimTreeToggle
4. press J (ensure the cursor not on the directory line)
5. press -

Expected behavior

No response

Actual behavior

No response

[alex-courtis]

Windows is problematic.

Please enable Diagnostic Logging for performance issues and post the log.

[regomne]

I enabled log by this section and try to open nvim-tree by :NvimTreeOpen, but it shows error:

Error executing Lua callback: ...te\pack\packer\start\nvim-tree.lua/lua/nvim-tree/log.lua:15: bad argument #2 to 'format' (value expected)
stack traceback:
        [C]: in function 'format'
        ...te\pack\packer\start\nvim-tree.lua/lua/nvim-tree/log.lua:15: in function 'raw'
        ...te\pack\packer\start\nvim-tree.lua/lua/nvim-tree/log.lua:57: in function 'line'
        ...te\pack\packer\start\nvim-tree.lua/lua/nvim-tree/log.lua:31: in function 'profile_start'
        ...r\start\nvim-tree.lua/lua/nvim-tree/explorer/explore.lua:30: in function 'populate_children'
        ...r\start\nvim-tree.lua/lua/nvim-tree/explorer/explore.lua:70: in function 'explore'
        ...cker\start\nvim-tree.lua/lua/nvim-tree/explorer/init.lua:28: in function '_load'
        ...cker\start\nvim-tree.lua/lua/nvim-tree/explorer/init.lua:21: in function 'new'
        ...e\pack\packer\start\nvim-tree.lua/lua/nvim-tree/core.lua:19: in function 'init'
        ...te\pack\packer\start\nvim-tree.lua/lua/nvim-tree/lib.lua:160: in function 'open'
        ...n\site\pack\packer\start\nvim-tree.lua/lua/nvim-tree.lua:181: in function 'open'
        ...n\site\pack\packer\start\nvim-tree.lua/lua/nvim-tree.lua:224: in function 'toggle'
        ...n\site\pack\packer\start\nvim-tree.lua/lua/nvim-tree.lua:364: in function <...n\site\pack\packer\start\nvim-tree.lua/lua/nvim-tree.lua:363>

[alex-courtis]

I enabled log by this section and try to open nvim-tree by :NvimTreeOpen, but it shows error:

That's great news! It looks like we have some special characters in a file name.

I've hardened the profiling: #1986

Please pull latest master and retest.

[regomne]

nvim-tree.zip

Here is the log. When I press - , it reproduced.

[alex-courtis]

I think we have an answer:

[2023-02-11 14:46:26] [profile] START git toplevel C:\Users\{myusername}\AppData\Local\Temp
[2023-02-11 14:46:26] [git] { "git", "-C", "C:\\Users\\{myusername}\\AppData\\Local\\Temp", "rev-parse", "--show-toplevel" }
fatal: not a git repository (or any of the parent directories): .git
[2023-02-11 14:46:26] [profile] END   git toplevel C:\Users\{myusername}\AppData\Local\Temp 187ms

What is {myusername}? Is that the actual directory name? What does :pwd show?

[2023-02-11 14:46:26] [profile] START explore init C:\Users\{myusername}\AppData\Local\Temp
[2023-02-11 14:46:26] [profile] START explore populate_children C:\Users\{myusername}\AppData\Local\Temp\%2Fclub%2Fitem%2Fparcel%2F0%2F042a0f56cdda683d0d622d7b1d4a3729_63e4a8e0_db5800c5.tmp
[2023-02-11 14:46:26] [profile] END   explore populate_children C:\Users\{myusername}\AppData\Local\Temp\%2Fclub%2Fitem%2Fparcel%2F0%2F042a0f56cdda683d0d622d7b1d4a3729_63e4a8e0_db5800c5.tmp 2ms

What is the name of those %2F files? What does powershell or WSL list them as?

[regomne]

{myusername} is the edited name by myself, not the real username. The real username does not includes any special characters.

name of %2Fclub%2Fitem%2Fparcel%2F0%2F042a0f56cdda683d0d622d7b1d4a3729_63e4a8e0_db5800c5.tmp is actually what it looks like.

>dir /b *.tmp
%2Fclub%2Fitem%2Fparcel%2F0%2F042a0f56cdda683d0d622d7b1d4a3729_63e4a8e0_db5800c5.tmp
%2Fclub%2Fitem%2Fparcel%2F1%2F12e4d7a30d14f3a4675349024e8e12fc_63a2bed8_418100bb.tmp
%2Fclub%2Fitem%2Fparcel%2F3%2F3117149da932e3b9e2cca80a9b38ec64_63ae9d81_f5200012.tmp
%2Fclub%2Fitem%2Fparcel%2F3%2F3d4c4e20b44df0c5b932e14467923596_63e3605c_ee1300b7.tmp
...

[regomne]

I checked the log and found it seems going into a loop from line 17630. It reloaded C:\Users\{myusername}\AppData\Local\Application Data repeatedly and never stopped.

[alex-courtis]

The good news is that there is no resource leak. git looks OK as well.

[2023-02-11 14:46:52] [watcher] event_cb 'C:\Users\{myusername}\AppData\Local\Temp\nvim' 'nvim-tree.log'
[2023-02-11 14:46:52] [watcher] node event scheduled refresh explorer:watch:C:\Users\{myusername}\AppData\Local\Temp\nvim:375
[2023-02-11 14:46:52] [profile] START change dir C:\Users\{myusername}\AppData\Local
[2023-02-11 14:46:52] [profile] START core init C:\Users\{myusername}\AppData\Local

There is a scheduled refresh for nvim-tree.log's directory going on when changing directory. Not necessarily a problem, just interesting.

I checked the log and found it seems going into a loop from line 17630. It reloaded C:\Users{myusername}\AppData\Local\Application Data repeatedly and never stopped.

Those don't look to be scheduled; they are part of the regular reload resulting from the directory change. Please set filesystem_watchers.enable = false and repeat so that we can confirm this.

[regomne]

nvim-tree.zip

Disabled the filesystem_watchers.

[alex-courtis]

nvim-tree.zip

Disabled the filesystem_watchers.

Did vim freeze? It looks OK...
Edit: I see many git attempts.

Please set git.enable = false and repeat.

Does this problem occur in any other directories, or just the Application Data one?

[alex-courtis]

The 1s intervals reminds me of #1831