Issue #9704 has been reported by Thomas Sawyer.

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Feature #9704: Refinements as files instead of modules
https://bugs.ruby-lang.org/issues/9704

* Author: Thomas Sawyer
* Status: Open
* Priority: Normal
* Assignee: 
* Category: core
* Target version: Next Major
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If refinements are to remain file-scoped, then it would be more convenient if `using` worked at the file level, akin to `require`, rather than behave like a module `include`. For instance, instead of:

~~~
# foo.rb
module Foo
  refine String do
    def some_method
      ...
    end
  end
end
~~~

~~~
require 'foo'
using Foo
~~~

We could do:

~~~
# foo.rb
class String
  def some_method
    ...
  end
end
~~~

~~~
using 'foo'
~~~

This would make `require` and `using`, in a certain sense, *polymorphic* --if we `require` it will extend the classes directly, but if `using` then they will be refined instead.




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