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Bug #16107

closed

Module#refine and Module#using behaved unexpectedly

Added by UlyssesZhan (有丘 詹) over 2 years ago. Updated over 2 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Target version:
-
ruby -v:
ruby 2.6.0p0 (2018-12-25 revision 66547) [x64-mingw32]
[ruby-core:94382]

Description

The issue happened when I tried to run the code below:

# Main.rb
class A
end
class B
end

module M1
    refine A do
      def foo *args
          puts "foo"
      end
    end
end

using M1
module M2
    def self.enable_foo
        refine B do
            def call_foo *args
                A.new.foo *args
            end
        end
    end
end

M2.enable_foo
using M2
B.new.call_foo

I expected it to output foo, but I got this:

Traceback (most recent call last):
        1: from Main.rb:28:in `<main>'
Main.rb:20:in `call_foo': undefined method `foo' for #<A:0x000000000719f3a0> (NoMethodError)
Did you mean?  for

I tried to put using M1 in M2 and its singleton class, but the same error was raised.
Maybe it is a Ruby bug. If it is not, I hope to get a workaround when I encounter similiar situations.
RUBY_VERSION is "2.6.0", and RUBY_PLATFORM is "x64-mingw32".

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