lua require('buffertag').setup({
    -- accepts any border options that `nvim_open_win` accepts.
    -- see ":help vim.api.nvim_open_win"
    border = "none",
    -- By default if the buffer name is too wide for the pane it's in, it will
    -- display and overlap the pane. By setting this to true, the buffer name will
    -- be truncated to fit within the pane, ensuring the floating window does not
    -- overlap any other panes.
    limit_width = false,
    -- if `vim.bo.modified` is `true` for the current buffer,
    -- display modified symbol before the buffer name.
    modified_symbol = "[+]", -- other modified symbol: "●" 
})