From: Stefano Crocco <stefano.crocco@...>
Date: 2008-07-20T23:40:44+09:00
Subject: Re: Does "rescue" wihtour argument handle any kind of Exception or not?

On Sunday 20 July 2008, Iñaki Baz Castillo wrote:
> Hi, I read in this article:
>   http://jerith.livejournal.com/40063.html
> that:
>
> ---------------------------
> Exception
>   - StandardError
>     - RuntimeError
>     - ZeroDivisionError
>   - ScriptError
>     - SyntaxError
>   - SystemExit
>   - SignalException
>     - Interrupt
>
> The important bit there is that all the stuff you can reasonably expect to
> recover from is under StandardError. Because of this, a default rescue
> block will not catch anything that isn't a StandardError. The observant
> reader will notice that I helpfully showed Interrupt's position in the
> hierarchy. The observant reader will also notice that it is not a subclass
> of StandardError. This means that you need to catch it explicitly, or it
> will cause a crash. ---------------------------
>
> But is it really true? I do:
>
> ----
> begin
> 	raise Interrupt
> rescue
> 	puts "rescued !!!"
> end
> ----
>
> And I get:
>
> => "rescued !!!"
>
>
> So is the above article tru or not?
>
> Thanks.

For me, using ruby 1.8.7, patchlevel 22 on Gentoo Linux, your code works as 
the article says, that is the exception is not being caught.

Stefano