New scope solution

[StefanKarpinski]

@jballanc

Forgive me if I’m missing something, but couldn’t we perhaps have an even simpler heuristic: variables in non-function scopes are global when they exist outside of a function scope?

This was precisely the solution previously proposed here:

Another possible solution to the global scope debacle

The infamous issue https://github.com/JuliaLang/julia/issues/28789 has been on most of our minds for a while now. Although I’ve stopped posting there, I can tell you I’ve been thinking about it a lot, as have Stefan and Jameson and others, and we have continued discussing it off and on. We should really try to get it right. Last time around, we more-or-less settled on changing only the REPL, which has the main advantage of being non-breaking for most code. But after sleeping on it, it does not …