From: nobu@...
Date: 2019-03-10T06:25:56+00:00
Subject: [ruby-core:91733] [Ruby trunk Bug#15646] method_defined? inside method_added behaves differently for `initialize`

Issue #15646 has been updated by nobu (Nobuyoshi Nakada).


`initialize` isn't involved in [Feature #6539].
It has been always private since more earlier days, 1.1 at least.

----------------------------------------
Bug #15646: method_defined? inside method_added behaves differently for `initialize`
https://bugs.ruby-lang.org/issues/15646#change-77009

* Author: alanwu (Alan Wu)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.7.0dev (2019-03-08 trunk 67194) [x86_64-darwin18]
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
----------------------------------------
Repro:
```ruby
class MethodAddedSpecialCase
  def self.method_added(name)
    puts "#{name} added, method_defined?: #{method_defined?(name)}"
  end

  def hello
  end

  def initialize
  end
  
  def world
  end
end
```

Output:
```
hello added, method_defined?: true
initialize added, method_defined?: false
world added, method_defined?: true
```



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