unprepend

unprepend.rb

class String
  def unprepend this
    self.sub(/#{this}$/, '')
  end

  alias >> unprepend
end

greeting = 'bbqomgwtf'
#=> "bbqomgwtf"

greeting << 'bbq'
#=> "bbqomgwtfbbq"

greeting >> 'bbq'
#=> "bbqomgwtf"