From: nobu@...
Date: 2014-05-30T07:43:04+00:00
Subject: [ruby-core:62856] [ruby-trunk - Feature #7836] Need a way to get Method and UnboundMethod objects to methods overridden by prepended modules

Issue #7836 has been updated by Nobuyoshi Nakada.

Description updated

Can't you achieve this by `Method#super_method`?

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Feature #7836: Need a way to get Method and UnboundMethod objects to methods overridden by prepended modules
https://bugs.ruby-lang.org/issues/7836#change-46975

* Author: john mair
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* Category: core
* Target version: current: 2.2.0
----------------------------------------
See the following code:

~~~ruby
module P
  def hello
    puts "from P"
    super
  end
end

class A
  def hello
    puts 'from A'
  end

  prepend P
end

A.instance_method(:hello).source_location == P.instance_method(:hello).source_location  #=> true
~~~

## Discussion

Since `A.instance_method(:hello)` effectively returns `P.instance_method(:hello)` it is impossible to get an `UnboundMethod` object to the original `A#hello` method.

Tools like [Pry](http://pryrepl.org) need to access `UnboundMethod` objects to every active method in the system for debugging purposes.

## Possible solution

Simply allow `instance_method()` to take a second boolean parameter, indicating whether methods injected by prepended modules are to be included, it would default to true:

example:

~~~ruby
A.instance_method(:hello) #=> same as P#hello
A.instance_method(:hello, false) #=> return strictly A#hello
~~~


---Files--------------------------------
0001-proc.c-include-prepended-method-flag.patch (3.17 KB)


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