[ruby-core:101291] [Ruby master Bug#17374] Refined methods aren't visible from a refinement's module

Issue #17374 has been updated by marcandre (Marc-Andre Lafortune).


Eregon (Benoit Daloze) wrote in #note-4:
> In the original example, there is no way to know that Implementation will be followed by `refine`, and that the methods declared there should be affected.
> 
> What you are asking is I think dynamic rebinding

I might be confused as to what dynamic rebinding is; for me the constraint was that there could not be later redefinitions of refinements, that everything had to had been already defined (which is the case).

When `refine { include Mod }`, I would like the `include` to "duplicate" the *current* methods of `Mod`, just as if I had written them with `def` at that point. Ideally they would be in a different layer than the current refinement, so you could use `prepend`, `def` and `include` on the same method, but at this point that is minor.

Note that I tried `refine { define_method :foo, Mod.instance_method(:foo) }` and that does not work either.


> because what should happen if:
> ```ruby
> module R1
>   refine Foo do
>     prepend Foo::Implementation
>   end
> end
> 
> module R2
>   refine Foo do
>     prepend Foo::Implementation
>   end
> end
> ```

More or less the same as if you replaced the `prepend` with the `def`s of `Foo::Implementation` as they were defined at the time.


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Bug #17374: Refined methods aren't visible from a refinement's module
https://bugs.ruby-lang.org/issues/17374#change-88975

* Author: marcandre (Marc-Andre Lafortune)
* Status: Open
* Priority: Normal
* Assignee: shugo (Shugo Maeda)
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
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