From: Brian Candler <b.candler@...>
Date: 2010-08-18T18:18:36+09:00
Subject: Re: Base64 multiple by 4

irb(main):001:0> s = ["hello world"].pack("m")
=> "aGVsbG8gd29ybGQ=\n"
irb(main):002:0> s.unpack("m").first
=> "hello world"
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