[BUG] set `dir = git_dir` will not make toggleterm try and derive the git repo directory

Is there an existing issue for this?

[X] I have searched the existing issues

Current Behavior

according to the documentation i setting the dir option to git_dir in neovim commandline likeToggleTerm dir=git_dir, but the directory in toggleterm does not change as expected

Expected Behavior

this seems to be caused by vim.fn.isdirectory not recognizing git_dir. i find the function that toggleterm.nvim used to get or create terminal

function M.get_or_create_term(num, dir, direction, name)
  local term = M.get(num)
  if term then return term, false end
  if dir and fn.isdirectory(fn.expand(dir)) == 0 then dir = nil end
  return Terminal:new({ id = num, dir = dir, direction = direction, display_name = name }), true
end

and find it depend vim.fn.isdirectory() to recognize directory, but git_dir will be not recognized.

Edited: I added an additional if condition in my local toggleterm.nvim, which made ToggleTerm dir=git_dir work properly. I'm not sure if this will affect other behaviors.

 function M.get_or_create_term(num, dir, direction, name)
  local term = M.get(num)
  if term then return term, false end
  -- HACK: `dir ~= "git_dir"` is a hack to make git_dir work
  if dir and fn.isdirectory(fn.expand(dir)) == 0 and dir ~= "git_dir" then dir = nil end
  return Terminal:new({ id = num, dir = dir, direction = direction, display_name = name }), true
end

Steps To Reproduce

i set toggleterm.nvim in my configuration like this

{
    "akinsho/toggleterm.nvim",
    version = "*",
    event = "VeryLazy",
    cmd = { "ToggleTerm", "TermExec" },
    ... 
    opts = {
      on_create = function(term)
        print(term.dir)
      end,
      autochdir = false,
      direction = "horizontal",
      shell = vim.fn.has("win32") == 1 and "pwsh" or vim.o.shell,
      float_opts = {
        border = "rounded",
      },
    },
}

Environment

- OS: Windows 11 23H2
- neovim version: NVIM v0.10.0
- Shell: PowerShell 7.4.2

Anything else?

No response

akinsho / toggleterm.nvim