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Neovim Version (nvim -v)

v0.10.0-dev-985+gae7ab9015

Operating System / Version

Debian GNU/Linux

Describe the Bug

I can't able to open terminal using :terminal command from a Neo-tree window. When I run :terminal command, neovim gives the error Can only call this function in an unmodified buffer. But I can open a terminal using :e term://bash. How to rectify this?

Screenshots, Traceback

neotree_terminal_bug.webm

Steps to Reproduce

Open Neo-tree
Run :terminal
You can see the error.

Expected Behavior

Terminal should be opened using :terminal.

Your Configuration

-- DO NOT change the paths and don't remove the colorscheme
local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs({ "config", "data", "state", "cache" }) do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({ "git", "clone", "--filter=blob:none", "https://github.com/folke/lazy.nvim.git", lazypath, })
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
  "folke/tokyonight.nvim",
  -- add any other plugins here
}

local neotree_config = {
  "nvim-neo-tree/neo-tree.nvim",
  dependencies = { "MunifTanjim/nui.nvim", "nvim-tree/nvim-web-devicons", "nvim-lua/plenary.nvim" },
  cmd = { "Neotree" },
  keys = {
    { "<Leader>e", "<Cmd>Neotree<CR>" }, -- change or remove this line if relevant.
  },
  opts = {
    -- Your config here
    -- ...
  },
}

table.insert(plugins, neotree_config)
require("lazy").setup(plugins, {
  root = root .. "/plugins",
})

vim.cmd.colorscheme("tokyonight")
-- add anything else here

The sidebar has window stealing prevention. If another buffer tries to steal its window, it will try to move that buffer to another window and restore neo-tree.

This is meant as a helpful thing for when you accidentally open a file in neo-tree's window. It was never tested for terminals because that is an unusual thing to open accidentally. The usual culprits are files opened from a fuzzy finder.

The immediate answer is that you should switch to another window before opening a terminal. This should be obvious, you should not be opening anything in neo-tree's window. Just because you get away with it sometimes does not make it correct.

There's also something about the focus stealing prevention that doesn't work with terminals that should be fixed. I gotta say this is not a high priority for me but maybe someone else is interested in working on this.

nvim-neo-tree / neo-tree.nvim

BUG: #1130