/usr/share/doc/ruby-metaclass/README.md is in ruby-metaclass 0.0.1-2.
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1 2 3 4 5 6 | Adds a `__metaclass__` method to all Ruby objects.
Motivations :-
* Even though WhyTheLuckyStiff's [metaid gem](https://rubygems.org/gems/metaid) does something similar, apparently the metaclass method without underscores [doesn't play well with Rails v2.3](https://github.com/floehopper/mocha/commit/f0749d6d291164cc9280aa8ba16f33d652d45fe1#commitcomment-475799).
* I'm trying to extract code out of the [mocha gem](https://github.com/floehopper/mocha) and this is an obvious candidate.
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