titlecase.rb

module CoreExtensions
  refine String do
    def titlecase
      s = chars
      s.map.with_index{|c,i|
        !%w[a i u].include?(s[0]) && ((i==0 && self[0..1] != 'al') || (i==1 && %w[ʾ ʿ].include?(s[0]))) ? 
          c.upcase :
          c
      }.join
    end
  end
end