From: "Mikael Høilund" <mikael@...>
Date: 2008-08-01T02:27:44+09:00
Subject: Re: super with block


On Jul 31, 2008, at 19:10, Lou Zell wrote:
>
>>> class NString < String
>>> def gsub!(*args, &blk)
>>> super(*args, &blk)
>>> end
>>> end
> => nil
>>> s = NString.new("hi")
> => "hi"
>>> s.gsub!(/(hi)/){$1}
> => ""


Looks like this is a problem with using $1 inside the block. Replacing  
{$1} with {|m| m} makes it work.

However, a different issue I now remember running into a long time ago  
is that `super` is pretty quirky regarding blocks:

Calling it as just `super` will pass the block.
`super(*args, &block)` will as well, obviously.
`super(*args)` will too!

The only way to avoid passing the block to super is `super(*args,  
&nil)`, however ugly that might be.

All of this is tested in 1.8.6, and is probably the same in 1.9.


-- 
Mikael Høilund
http://hoilund.org/