class Pry::Command::WatchExpression

def list
  if expressions.empty?
    output.puts "No watched expressions"
  else
    pry_instance.pager.open do |pager|
      pager.puts "Listing all watched expressions:"
      pager.puts ""
      expressions.each_with_index do |expr, index|
        pager.print with_line_numbers(expr.to_s, index + 1)
      end
      pager.puts ""
    end
  end
end