Hello, all. I'm new to the list (and to MacRuby!), so I give my
apologies in advance for any newbie indiscretions.

I was working today with MacRuby as a scripting language within a
Cocoa app, and found a difference between how Ruby and MacRuby's eval
functions relate to their calling context.

Here's a reduction:

% irb --version
irb 0.9.5(05/04/13)

% irb
>> eval("f = 12")
=> 12
>> f
=> 12

% macirb --version
DietRB (0.6.1)

% macirb
irb(main):001:0> eval("f = 12")
=> 12
irb(main):002:0> f
NameError: undefined local variable or method `f' for main:TopLevel


I'm sure I'm missing something super basic. I followed a number of
false leads in trying to figure this out before emailing the list,
including checking out the $SAFE global (0 in both cases), and
constructing Bindings to the calling context (same result).

Thanks in advance for your patience and your help!

Best,
Braxton Sherouse
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