Frankly, the key takeaway to most problems people run into with Unicode is that there are very, very few operations that are universally well-defined for arbitr

Frankly, the key takeaway to most problems people run into with Unicode is that there are very, very few operations that are universally well-defined for arbitrary user-provided text. Pretty much the moment you step outside the realm of "receive, copy, save, regurgitate", you're probably going to run into edge cases.