Cannot add files when PWD is empty directory

[kputnam]

Description

When hide_root_folder is true, the 'a' keymap which normally prompts to add a file in the NvimTree window doesn't work when your root directory is empty.

I suspect this function or its caller may be at issue.

Neovim version

NVIM v0.7.0
Build type: Release
LuaJIT 2.1.0-beta3
Compiled by brew@Monterey

Operating system and version

macOS 12.4

nvim-tree version

0f96e32

Minimal config

require("nvim-tree").setup({ view = { hide_root_folder = true }})

Steps to reproduce

1. mkdir emptydir
2. cd emptydir
3. nvim
4. :NvimTreeOpen
5. Press the [a] key

Expected behavior

"Create file " prompt should appear.

Actual behavior

Nothing happens.