From: Joel VanderWerf <vjoel@...>
Date: 2004-05-26T08:13:25+09:00
Subject: Re: $SAFE idiom (Re: defining condititions)

nobu.nokada@softhome.net wrote:
> You don't need save $SAFE, which is always thread local.  And,
> Proc also preserves its $SAFE value.  Though this was an
> unofficial feature in 1.6, guaranteed from 1.8.

Hm. Didn't know that. Also, methods preserve $SAFE:

def foo; $SAFE=3; end
# => nil
$SAFE
# => 0
foo
# => 3
$SAFE
# => 0