Wow great post, thanks for the reply. I didn't know eval was always executed at global scope, and I was not thinking about the ht variable being executed multiple times at different scope, so thanks for pointing that out. The rest of your explanation about how to get it working is very clear and I will be a better arc hacker for it!
The occasion for this macro is an object system built around closures and hash tables. I will post more about it when I've made more progress.
