You know, it doesn't really surprise me that perl isn't always optimal for golf. I've seen it in action in that fibonacci golf tingy at Re: Fibo Golf challenge on 3 monkeys and (OT) Fibonacci numbers in Ruby - final shot - 24 chars etc. Also, when I write one-liners, which I do a lot, and I don't golf on purpose, the ruby ones always turn out to be shorter than the perl ones, only the ruby ones get hard to manage earlier when they grow. Ruby just has a larger, better standard library for basic things, but cpan wins when you need more complicated stuff like xml parsing.
As for ruby,
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