live_grep with additional_args doesn't work (neovim 0.11)

[archilkarchava]

Description

The problem is with this code:

lua/telescope/utils.lua

local flatten = function(t)
  return vim.iter(t):flatten():totable()
end
utils.flatten = vim.fn.has "nvim-0.11" == 1 and flatten or vim.tbl_flatten

In the code above vim.iter(t):flatten():totable() is not equivalent to vim.tbl_flatten, since vim.iter(t):flatten():totable() will throw if we pass a non-array-like table where's vim.tbl_flatten will include the items with valid numeric keys (1..n) and will stop once it encounters an invalid one (additional_args in this case, but could be a different one, e.g. bufnr, etc)

Neovim version

NVIM v0.11.0-dev-1043+ge4a74e986
Build type: RelWithDebInfo
LuaJIT 2.1.1727870382

Operating system and version

macOS 14.7

Telescope version / branch / rev

master (df534c3 commit)

checkhealth telescope

telescope:                                              health#telescope#check

Checking for required plugins ~
- OK plenary installed.
- WARNING nvim-treesitter not found. (Required for `:Telescope treesitter`.)

Checking external dependencies ~
- OK rg: found ripgrep 14.1.1
- OK fd: found fd 10.2.0

===== Installed extensions ===== ~

Steps to reproduce

1. nvim -nu minimal.lua
2. Press space on a keyboard

Expected behavior

Telescope opens and searching works.

Actual behavior

Telescope doesn't open and the following error is shown:

E5108: Error executing lua: ...talls/neovim/nightly/share/nvim/runtime/lua/vim/iter.lua:251: flatten() requires an array-like table
stack traceback:
[C]: in function 'error'
...talls/neovim/nightly/share/nvim/runtime/lua/vim/iter.lua:251: in function 'flatten'
/tmp/nvim/site/telescope/lua/telescope/utils.lua:23: in function 'flatten'
/tmp/nvim/site/telescope/lua/telescope/builtin/__files.lua:156: in function 'v'
/tmp/nvim/site/telescope/lua/telescope/builtin/__files.lua:645: in function 'v'
/tmp/nvim/site/telescope/lua/telescope/builtin/init.lua:587: in function 'live_grep'
/Users/archil/scripts/minimal.lua:15: in function </Users/archil/scripts/minimal.lua:14>

Minimal config

local plugins = {
	plenary = "https://github.com/nvim-lua/plenary.nvim",
	telescope = "https://github.com/nvim-telescope/telescope.nvim",
}

for name, url in pairs(plugins) do
	local install_path = "/tmp/nvim/site/" .. name
	if vim.fn.isdirectory(install_path) == 0 then
		vim.fn.system({ "git", "clone", "--depth=1", url, install_path })
	end
	vim.o.runtimepath = install_path .. "," .. vim.o.runtimepath
end

vim.keymap.set("n", "<space>", function()
	require("telescope.builtin").live_grep({
		additional_args = function(args)
			return vim.list_extend(args, { "--hidden", "--no-ignore" })
		end,
	})
end)