Issue #18270 has been updated by shugo (Shugo Maeda).


append_features is undefined in the class Class, and Module#include raises TypeError before calling append_features if the given argument is a Class.


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Feature #18270: Refinement#{extend_object,append_features,prepend_features} should be removed
https://bugs.ruby-lang.org/issues/18270#change-94696

* Author: shugo (Shugo Maeda)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
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Refinement#{extend_object,append_features,prepend_features} are not useful and should be removed.

How about to deprecate them in Ruby 3.1 and remove in Ruby 3.1?




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