From: Ben Bleything <ben@...>
Date: 2006-11-10T12:38:09+09:00
Subject: accessing caller's binding implicitly

Hi all,

As part of my IRB shell history hack (shameless plug[1]), I need to be
able to access the caller's binding.  Essentially, I need to be able to
do this:

    def irb_eval( lines, scope )
      eval(lines.join("\n"), scope)
    end

    irb_eval( ['a = :foo', 'b = :bar'], binding )

... but without explicitly passing the binding.  The goal is this:

    irb_eval( ['a = :foo', 'b = :bar'] )

    puts a
    => :foo

    puts b
    => :bar

Is this even possible?  As it is, the eval happens inside of irb_eval's
scope (I'm assuming... wherever it happens, I can't see the results when
it's done) which puts a cramp in my plans for world domination via cute
IRB hacks.

Help?

Thanks,
Ben

[1]: http://blog.bleything.net/articles/2006/10/21/shell-style-history-for-irb