[vidarh]

Pascal uses upcase, and so does many others, so it has a very long history.

.titleize() is from ActiveSupport, not Ruby.

But proper() would have confused me much more. First time I've ever heard it called that. 'proper' would sound ambiguous to me, because it doesn't indicate to me it's about case at all.

But of course this just reinforces the point that naming is hard.