It's not just Windows and JavaScript. On Apple platforms, NSString is UTF-16. On Linux, Qt uses UTF-16 strings. Looking at languages, we have Java (which is where JS got this bug from) and C# both enshrining it in their respective language specs.
So it's far more pervasive than people think, and will likely be in the picture for decades to come.
It's not just Windows and JavaScript. On Apple platforms, NSString is UTF-16. On Linux, Qt uses UTF-16 strings. Looking at languages, we have Java (which is where JS got this bug from) and C# both enshrining it in their respective language specs.
So it's far more pervasive than people think, and will likely be in the picture for decades to come.