@evan Just to be clear, I'm not inventing a new specification, but following the utf8 codepoint map. The permacomputing approach to text editing is likely not to build some sort all encompassing textarea system, but rather just having people implement enough of their own language that they can get their tasks done.
In any case, I thought UTF8 would be out of reach from something like uxn, but it isn't that much trouble after all, at least at a scale that I need.