Regarding hex strings

[foobar]

On Friday, 19 October 2012 at 13:19:09 UTC, Don Clugston wrote:
>>
>> We can still have both (assuming the code points are valid...):
>> string foo = "\ua1\ub2\uc3"; // no .dup
>
> That doesn't compile.
> Error: escape hex sequence has 2 hex digits instead of 4

Come on, "assuming the code points are valid". It says so 4 lines 
above!