require 'erb'

class ERB
  def self.str(template, binding = TOPLEVEL_BINDING)
    self.new(template, nil, '%<>-').result(binding)
  end
end

if __FILE__ == $PROGRAM_NAME
  puts ERB.str(<<-_EOD_)
Hello, erbstr.
%
%
----
% dice_2d6 = rand(6) + rand(6)
2D6: <%= dice_2d6 -%>
% if dice_2d6.even?
(even)
% else
(odd)
% end
----
%
%
% 10.times do |i|
Loop count: <%= i %>.
% end
  _EOD_
end