Ewout Kramer

Yes, I consider this an example of what #856 is about.

I think this is a duplicate of #1773, correct?

I suspect a connection between the two. We'll keep them both open until we have a better understanding of the issue.

Yes, adding an optional param counts as a non-breaking change (for us ;-)

We basically strive for updates that won't produce errors when you need to recompile your software when you upgrade the SDK package. So, not necessarily binary compatibility.

It would be helpful yes, but it is really hard, since this is all handled automatically in the interpreter infra (that's why it sounds like an internal error). It would...

I am looking at rewriting the FP engine (in my spare time), it's good to focus on readable error messages while I do.

@MatthijsvdWielen, I edited the title of your issue: although it is true - it is also too broad. There are tons of textual rules that we don't yet catch -...

I think we have agreed offline that the prio for this issue is not too high?

* Not the last one - we should encourage the author to correct it * The snapget should complain (it does) * The validator should complain (it does not) So,...