--Nmap("<leader>b", ':buffer ')

-- stolen from https://www.reddit.com/r/neovim/comments/12c4ad8/closing_unused_buffers/
local id = vim.api.nvim_create_augroup("startup", {
  clear = false
})

local persistbuffer = function(bufnr)
  bufnr = bufnr or vim.api.nvim_get_current_buf()
  vim.fn.setbufvar(bufnr, 'bufpersist', 1)
end

vim.api.nvim_create_autocmd({ "BufRead" }, {
  group = id,
  pattern = { "*" },
  callback = function()
    vim.api.nvim_create_autocmd({ "InsertEnter", "BufModifiedSet" }, {
      buffer = 0,
      once = true,
      callback = function()
        persistbuffer()
      end
    })
  end
})

vim.keymap.set('n', '<Leader>o',
  function()
    local curbufnr = vim.api.nvim_get_current_buf()
    local buflist = vim.api.nvim_list_bufs()
    for _, bufnr in ipairs(buflist) do
      if vim.bo[bufnr].buflisted and bufnr ~= curbufnr and (vim.fn.getbufvar(bufnr, 'bufpersist') ~= 1) then
        vim.cmd('bd ' .. tostring(bufnr))
      end
    end
  end, { silent = true, desc = 'Close unused buffers' })