From: Lionel Thiry <lthiryidontwantspam@...>
Date: 2005-03-15T23:02:03+09:00
Subject: Re: Feature or bug ??

Chucky wrote:
> Hi !
> 
> I came upon a strange behaviour of ruby when using a code block in the
> constructor. Here is a minimalist version of program which shows that :
> 
> ------8<--------------------8<--------------------8<--------------------8<--------------
> class C1
>   def initialize( &code )
>     code.call
>   end
> end
> 
> class C2 < C1
>   def initialize( &block )
>     super
> #     @c1 = C1.new
>     puts "I went here !"
>   end
> end
> 
> c2 = C2.new do puts "Damn! This went wrong !" end
> ------8<--------------------8<--------------------8<--------------------8<--------------
> 
> Obviously, the program SHOULDN'T display "Damn! This went wrong !" ... but
> actually it does !
> 
> The very interesting thing is that this happens ONLY with super ! In fact,
> new and other methods are not subject to this hazardous processing. If you
> comment the "super" line and uncomment the following one, you will see
> that.
> 
> Definitely, I don't understand all this stuff :
>  - Is this a feature or a bug ?
It's a bug. (or a really surprising feature)

When a see "super", I feel like seeing a method call, a special one, yes, but 
still a method call. Then I naturally expect it to behave like a method call, 
and a method call doesn't do any implicit block passing, nor argument passing, 
even when omitting parens.

Regards,
Lionel Thiry