delete_buffer action does not close the current buffer

[tjvc]

Description

The delete_buffer action does not close the current buffer if it is the only open buffer in the current tab.

Neovim version

NVIM v0.10.0-dev-774+g37c58226a-Homebrew
Build type: Release
LuaJIT 2.1.0-beta3

Operating system and version

macOS 13.5

Telescope version / branch / rev

telescope 0.1.2

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 13.0.0
- OK fd: found fd 8.6.0

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

Telescope Extension: `fzf` ~
- OK lib working as expected
- OK file_sorter correctly configured
- OK generic_sorter correctly configured

Steps to reproduce

1. Open one or more buffers
2. Ensure that a single buffer is open in the current tab
3. Open the Telescope buffers picker
4. Try deleting the current buffer (mapped to <C-D> in the provided config)
5. See that the buffer is not deleted

Expected behavior

The same as :bdelete <buffer number> on the current buffer: the buffer is deleted and another open buffer (if any) or the [No Name] buffer is displayed.

Actual behavior

The buffer is removed from the picker list but remains open.

Minimal config

vim.cmd [[set runtimepath=$VIMRUNTIME]]
vim.cmd [[set packpath=/tmp/nvim/site]]
local package_root = '/tmp/nvim/site/pack'
local install_path = package_root .. '/packer/start/packer.nvim'
local function load_plugins()
  require('packer').startup {
    {
      'wbthomason/packer.nvim',
      {
        'nvim-telescope/telescope.nvim',
        requires = {
          'nvim-lua/plenary.nvim',
          { 'nvim-telescope/telescope-fzf-native.nvim', run = 'make' },
        },
      },
      -- ADD PLUGINS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE
    },
    config = {
      package_root = package_root,
      compile_path = install_path .. '/plugin/packer_compiled.lua',
      display = { non_interactive = true },
    },
  }
end
_G.load_config = function()
  require('telescope').setup()
  require('telescope').load_extension('fzf')
  -- ADD INIT.LUA SETTINGS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE
  require("telescope").setup {
    pickers = {
      buffers = {
        mappings = {
          i = {
            ["<c-d>"] = "delete_buffer",
          }
        }
      }
    }
  }
end
if vim.fn.isdirectory(install_path) == 0 then
  print("Installing Telescope and dependencies.")
  vim.fn.system { 'git', 'clone', '--depth=1', 'https://github.com/wbthomason/packer.nvim', install_path }
end
load_plugins()
require('packer').sync()
vim.cmd [[autocmd User PackerComplete ++once echo "Ready!" | lua load_config()]]

[jamestrew]

I think this might be awkward to fix.

Doing :bdelete <bufnr> on the "current buffer" (aka the one behind telescope) while telescope is open, you don't get the expected behavior outlined in the issue description either. Looks like there's some strange interaction when deleting a buffer that's behind a floating buffer or something.