I wonder if I could change the default to NFC in the next version without breaking people's expectations. It is a safer default. When it comes to text analytic

I wonder if I could change the default to NFC in the next version without breaking people's expectations. It is a safer default. When it comes to text analytics, the underlying tagger and stuff won't know what O21 is any more than it knows what O_2^1 is anyway. And NFKC is useful for mixed Latin and Japanese text, which I wouldn't entirely dismiss as strange and geeky. But it's true that the default could be more conservative.