Given how complicated any specification for a non-trivial language is, I wonder if there are any. But I think this is beside the point. Not having a specificat

Given how complicated any specification for a non-trivial language is, I wonder if there are any. But I think this is beside the point. Not having a specification for a language pushes every language feature discussion down onto application and library developers 'in situ'. When a developer or library maintainer stumbles onto unexpected interpreter or compiler behavior in a language without a specification, it means that in the short term there's no guidance about how they should deal with it. Do I hack this for Visual C++ in a way that can be removed eventually or do I really have to assume going forward that variadic templates aren't going to be available?