[ruby-core:75515] [Ruby trunk Feature#12317] Name space of a module

Issue #12317 has been updated by Daniel Ferreira.


Hi Tsuyoshi.

A clear namespace definition is important for the implementation of my proposed feature: [internal interface](https://bugs.ruby-lang.org/issues/9992)
In fact I was thinking in proposing such a similar method.

Following the challenge put by J旦rg W Mittag [internal - note#5](https://bugs.ruby-lang.org/issues/9992#note-5)

What in your opinion should be the output of #namespace for the challenges pointed out by J旦rg?

Simple challenge example:

~~~ ruby
module Foo
  class Bar
  end
end

Baz = Foo

::Baz::Bar.ancestors
=> [Foo::Bar, Object, Kernel, BasicObject]

::Baz::Bar.namespace
 => ?
~~~

----------------------------------------
Feature #12317: Name space of a module
https://bugs.ruby-lang.org/issues/12317#change-58631

* Author: Tsuyoshi Sawada
* Status: Open
* Priority: Normal
* Assignee: 
----------------------------------------
I want a method to return the  name space of a module, something like:

~~~ruby
class A; module B; module C end end end

A::B::C.namespace => [A, A::B, A::B::C]
~~~

There is `nesting` method that is similar, but that only returns the lexical nesting information.

There are also some known hacks for this, converting the module to the string representation using `to_s` or `name`, and then splitting it by `::`. But that easily breaks if the module is anonymous, or is a singleton module. I would like a more robust, core method.



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