gistfile1.txt

>> def foo; bar = "blah"; raise NotImplementedError; end
=> #<CompiledMethod foo file=(irb)>
>> def get_exception; begin; yield; nil; rescue Exception => e; e; end; end
=> #<CompiledMethod get_exception file=(irb)>
>> e = get_exception { foo }
=> #<NotImplementedError: NotImplementedError>
>> cx = e.context
=> #<MethodContext:0x16a main#foo (irb):1>
>> m = cx.method
=> #<CompiledMethod foo file=(irb)>
>> m.local_names
=> #<Tuple: :bar>  
>> cx.get_eval_local :bar
=> nil

Shouldn't the last line return "blah"??