[ruby-core:42190] Re: [ruby-trunk - Bug #5914][Open] Calling extend with an anonymous module requires use of parentheses

When you call without parentheses, then block `do` is going to `extend`
method, but not `Module.new`

2012/1/20 Mark Somerville <[e-mail]>

>
> Issue #5914 has been reported by Mark Somerville.
>
> ----------------------------------------
> Bug #5914: Calling extend with an anonymous module requires use of
> parentheses
> https://bugs.ruby-lang.org/issues/5914
>
> Author: Mark Somerville
> Status: Open
> Priority: Normal
> Assignee:
> Category:
> Target version:
> ruby -v: 2.0.0dev
>
>
> =begin
>
> Given Ruby 2.0.0dev, 1.9.3 or 1.8.7 and this code:
>
>  class Dude
>    def initialize
>      extend Module.new do
>        def hello
>          puts "Word!"
>        end
>      end
>    end
>  end
>
>  Dude.new.hello
>
> No warning is given, but it does not behave how I expect and throws a
> NoMethodError.
>
> However, if parentheses are used on the call to extend, things behave as
> expected:
>
>  class Dude
>    def initialize
>      extend(Module.new do
>        def hello
>          puts "Word!"
>        end
>      end)
>    end
>  end
>
>  Dude.new.hello
>  => Word!
>
> I don't understand what is happening in the first case (without
> parentheses). Is this a bug or a misunderstanding on my part?
>
> =end
>
>
> --
> http://bugs.ruby-lang.org/
>
>