argv is "NvimTree_1"

[mufasachan]

Hello,

Why vim.fn.argv() output is { "NvimTree_1" } when I use a single directory as an argument? I raise this question because it messes up a session plugin that I use. But, the question is not about the behaviour of this plugin.

Here a repro.lua with lazy.nvim:

vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

vim.env.LAZY_STDPATH = ".repro"
load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua"))()

require("lazy.minit").repro({
	spec = {
		{
			"nvim-tree/nvim-tree.lua",
			version = "v1.5.0",
			lazy = false,
			dependencies = {
				"nvim-tree/nvim-web-devicons",
			},
			config = function()
				require("nvim-tree").setup {}
			end,
		},
	},
})

Then if I type nvim -u repro.lua . and I use the command = vim.fn.argv, then I get { "NvimTree_1" }. I do not think it's an OK behaviour but I know little about the role of netrw and the bulit-in vim argv.

I tried the following :

• enabled = false in the opts table, without netrw-noload instructions removed. I get the absolute path of the directory behind ..
• enabled = false in the opts table, with netrw-noload instructions removed. I get ..

I guess netrw is doing some magics with the argument. I started to read netrw documentation. My first skim did not give me an answer, sadly. I will read into details.

Plus, in the documentation of nvim-tree I see that I can keep netrw. So I removed the global options of netrw-noload and I set disable_netrw and hijack_netrw to false and true respectively:

vim.env.LAZY_STDPATH = ".repro"
load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua"))()

require("lazy.minit").repro({
	spec = {
		{
			"nvim-tree/nvim-tree.lua",
			version = "v1.5.0",
			lazy = false,
			dependencies = {
				"nvim-tree/nvim-web-devicons",
			},
			opts = {
				disable_netrw = false,
				hijack_netrw = true,
			},
			config = function(_, opts)
				vim.print(opts)
				require("nvim-tree").setup(opts)
			end,
		},
	},
})

I still have the same output: { "NvimTree_1" }.

Also I tried with version="*" and with other directory name, not just .. The behaviour is reproduced.

Eventually, opts = { disable_netrw = false, hijack_netrw = false } without the netrw-noload instructions result in an empty buffer.

I think the default behaviour, namely with netrw-nolead instructions and default settings, is to have the correct absolute path of the argument. Or maybe, it would need to add one more option in the opts of the plugin?

Edit: I found out that netrw manage the argument and expand it. I am not familiar with vim script so my understanding is not accurate. I tested to perform a vim.cmd("args test.lua") at the beginning of the M.setup of nvim-tree.lua and it seems to work. Although, my question still holds: there is any particular reason that the argv is modified? I guess at the Init of NvimTree, the buffer is named NvimTree_<tab> and, vim/nvim, takes the buffer name as argv.