Test for http://mortoray.com/2013/11/27/the-string-type-is-broken/ in Ruby

broken-strings.rb

str = "noël" # decomposed
puts str.reverse # expect lëon
puts str[0..2] # expect noë
puts str.length # expect 4

str = "😸😾" # emoji
puts str.reverse # expect 😾😸
puts str[1..str.length] # expect 😾
puts str.length # expect 2

str = "baffle" # with ligature
puts str.upcase