Generates a nice list of names for addressing purposes

gistfile1.rb

def address_name
  families = []
  last_names = {}
  guests.each do |guest|
    # Discard if name has question marks
    unless guest.name =~ /\?/
      names = guest.name.split(' ')
      # Discard if last name isn't uppercase
      if names.last =~ /[A-Z]/
        # If last name ends with a period, it's a suffix
        if names.last =~ /\.$/
          # Add to last name list for penultimate word
          (last_names[names[-2]] ||= []) << names.first
        else
          (last_names[names.last] ||= []) << names.first
        end
      end
    end
  end
  last_names.each do |last_name, first_names|
    if first_names.length > 4
      families << "The #{last_name} Family"
    else
      families << first_names.to_sentence + ' ' + last_name
    end
  end
  families.to_sentence
end