From: "matz (Yukihiro Matsumoto)" <noreply@...>
Date: 2021-08-19T07:28:55+00:00
Subject: [ruby-core:104998] [Ruby master Bug#14744] Refinements modules have	a superclass

Issue #14744 has been updated by matz (Yukihiro Matsumoto).


I am so sorry for being late.
I agree with @shugo's opinion in #note-2. We should hide `Array` in the example.

Matz.


----------------------------------------
Bug #14744: Refinements modules have a superclass
https://bugs.ruby-lang.org/issues/14744#change-93397

* Author: Eregon (Benoit Daloze)
* Status: Open
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* ruby -v: ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
----------------------------------------
~~~
$ ruby -e 'module M; refine Array do; p self; p self.class; p ancestors; end; end'
#<refinement:Array@M>
Module
[#<refinement:Array@M>, Array, Enumerable, Object, Kernel, BasicObject]
~~~

So the refinement module (self in the `refine Array do` block) is a Module, but looking at its ancestors it has Array as a "superclass".

Is that expected?
I thought modules can never have a superclass in Ruby.



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