fix: bufnr is nil when incomplete setup

[eightpigs]

bufnr is nil when opening quickly:

Vim(lua):E5108: Error executing lua ...nvim-tree.lua/lua/nvim-tree/view.lua:225: Expected Lua number
  stack traceback:
          [C]: in function 'nvim_buf_is_valid'
          ...e/pack/packer/start/nvim-tree.lua/lua/nvim-tree/view.lua:225: in function 'is_buf_valid'

Reproduce:

1. Set keymap, eg: map <leader>1 :NvimTreeOpen<cr>
2. Fast press: <leader>1 when nvim starting

[kyazdani42]

i think i've made a few adjustments (monkey patches unfortunately) during the setup, is this still required on your end on latest master ?

[eightpigs]

i tested the latest master, the bug still exists:

E5108: Error executing lua /home/eightpigs/.config/nvim/helpers.lua:59: Vim(lua):E5108: Error executing lua ...te/pack/packer/start/nv
im-tree.lua/lua/nvim-tree/lib.lua:112: attempt to index global 'TreeExplorer' (a nil value)
stack traceback:
        ...te/pack/packer/start/nvim-tree.lua/lua/nvim-tree/lib.lua:112: in function 'open'
        ...m/site/pack/packer/start/nvim-tree.lua/lua/nvim-tree.lua:40: in function 'open'

The reason is:

open nvim-tree window(lib.lua#L105) before initialization is complete(delayed creation of buf and TreeExplorer: nvim-tree.lua#L386):

Solutions:

If the window is opening before the initialization is completed(nvim-tree.lua#L386 vim.schedule...), make it open in the next event loop.

So, I think my revision is still needed. 😆

[kyazdani42]

thanks, this will be properly managed in a few weeks i hope.

[folliehiyuki]

Hi! I lazy-load nvim-tree.lua on NvimTreeOpen, NvimTreeToggle events. The command NvimTreeOpen works fine without issue after this commit.

Running NvimTreeToggle for the 1st time still gives me the error:

E5108: Error executing lua ...vim/site/pack/packer/opt/packer.nvim/lua/packer/load.lua:165: Vim(echomsg):E114: Missing quote: "Error in packer_compiled: ...vim/site/pack/packer/opt/packer.nvim/lua/packer/load.l
ua:83: Vim(lua):E5108: Error executing lua ...vim/site/pack/packer/opt/nvim-tree.lua/lua/nvim-tree.lua:147: attempt to index global 'TreeExplorer' (a nil value)
stack traceback:
        [C]: in function 'cmd'
        ...vim/site/pack/packer/opt/packer.nvim/lua/packer/load.lua:165: in function <...vim/site/pack/packer/opt/packer.nvim/lua/packer/load.lua:161>
        [string ":lua"]:1: in main chunk

[kyazdani42]

cannot reproduce, could you open an issue with your nvim-tree configuration ?

[folliehiyuki]

Done. Issue #965 opened.