The current limit (0x10FFFF) is the artificial restriction on UTF-8 to match UTF-16, not the upper bound. UTF-8 supports 2^31 code points with it's current enco

The current limit (0x10FFFF) is the artificial restriction on UTF-8 to match UTF-16, not the upper bound. UTF-8 supports 2^31 code points with it's current encoding. So nothing needs to change until Unicode consists of 2.1 billion code points or so. In my mind that will only happen as a result of extreme carelessness.