From: Daniel DeLorme <dan-ml@...42.com>
Date: 2008-02-10T18:53:12+09:00
Subject: Re: Timeout::Error

Joel VanderWerf wrote:
> begin
>   Timeout.standard_timeout 1.0 do
>     begin
>       sleep
>     rescue # inner
>       puts "this should not happen"
>     end
>   end
> rescue => ex # outer
>   p ex
> end

What about the reverse problem? A lazy programmer might do a catch-all 
rescue which would then catch unexpected inner exceptions which were not 
meant to be rescued. i.e.

begin
   Timeout.timeout(1) do
     1 / 0 #oops!
   end
rescue
   #silently ignore timeout
   #...but ignores division by zero too!
end

*That* might be the reason why Timeout::Error was not made a subclass of 
StandardError.

--
Daniel