return {
  'lukas-reineke/virt-column.nvim',

  opts = {
    char = '│',
  },

  config = function(_, opts)
    require('virt-column').setup(opts)

    local toggle_virtual_column = function()
      if vim.o.colorcolumn == '' then
        vim.o.colorcolumn = '+1'  -- one after 'textwidth'
      else
        vim.o.colorcolumn = ''    -- none
      end
    end

    vim.keymap.set('n', '<leader>sc', toggle_virtual_column)
  end,
}