Except, as you'll find people in these very comments arguing, if you don't implement utf16 anyways then you're not a compliant LSP. Don't forget that utf16/UCS

Except, as you'll find people in these very comments arguing, if you don't implement utf16 anyways then you're not a compliant LSP. Don't forget that utf16/UCS2 is Embrance, Extend, Extinguish at its finest. Literally the whole point of utf16 - not necessarily the explicit one, but the point behind the motivations people had for choosing what they chose - was incompatibility with other software supporting unicode back in the day.