From: "Jan E." <lists@...>
Date: 2012-08-11T04:36:07+09:00
Subject: Re: Unable to print a block argument.

Hi,

You're passing the string from Foo.new to the block. I guess you wanted 
to pass the instance:

def self.open(test)
  x = new test
  block_given? ? yield(x) : x
end

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