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On Tue, Nov 24, 2015 at 5:48 PM, Philipp Janda <> wrote:

> This case should be handled in all libraries.

Sure. The question is, is that really the case?

> Adding ref counting wouldn't unbreak the currently broken libraries.

The goal is not to unbreak. It is to keep those broken libs that manage to work in the hands of their users, working.

> And adding ref counting might break existing code: a simple `lua_replace()` can now run finalizers and thus raise errors and cause leaks in the C code.

I do not think I understand this part. Why would ref counting + lua_replace() run finalizers?