Issue #9210 has been updated by Yui NARUSE.

Backport changed from 1.9.3: DONTNEED, 2.0.0: DONE, 2.1: REQUIRED to 1.9.3: DONTNEED, 2.0.0: DONE, 2.1: DONE

r45115

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Bug #9210: Adding extra example in docs
https://bugs.ruby-lang.org/issues/9210#change-45385

* Author: Steve Klabnik
* Status: Closed
* Priority: Normal
* Assignee: Zachary Scott
* Category: doc
* Target version: 
* ruby -v: ruby-head
* Backport: 1.9.3: DONTNEED, 2.0.0: DONE, 2.1: DONE
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There's no documentation for the Module#class_variable method when using the parameter.

Thanks to Alexander Popov for suggesting this patch.

https://github.com/steveklabnik/ruby/commit/8290b41d79110691d4d52aae1ead1c7038ee700a.patch

or

https://github.com/steveklabnik/ruby/commit/8290b41d79110691d4d52aae1ead1c7038ee700a.diff



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