Flip flop
Heredocs
def long_messages
html_escape(<<-ONE) + '<hr />' + html_escape(<<-TWO)
Here goes my first very long message.
Yeehaw!
ONE
This is the second message which is still long.
It is long indeed.
TWO
end
un.rb
https://github.com/ruby/ruby/blob/84d83482c8ba1b8e7002ed8ff4c6a2c00fa4ce62/lib/un.rb