Why std.algorithm.sort can't be applied to char[]?

[monarch_dodra via Digitalmars-d-learn]

On Wednesday, 14 May 2014 at 09:01:23 UTC, John Colvin wrote:
> Why would anyone ever want to sort code-points?

Why not? To remove duplicate characters?

> They might want to sort graphemes, but that's difficult to do 
> in-place (needs O(n) memory, I think...). If out-of-place is 
> good enough
>
> someStr.byGrapheme.array.sort();

The current "status quo" in D is that a dchar basically
represents a character.