String Literal Docs

[Alix Pexton]

On 20/06/2010 01:09, div0 wrote:
> On 19/06/2010 23:17, Ellery Newcomer wrote:
>>
>> All I can say is
>>
>> auto w = x"dead beef"w;
>>
>> results in
>>
>> Error: invalid UTF-8 sequence
>>
>> on dmd 2.047
>
> Then you've found a bug, you know what to do:
>
> http://d.puremagic.com/issues/
>

Hmn, that would seem to indicate to me that the postfix is being allowed 
when the hex represents a valid UTF sequence, but not otherwise.

I didn't do too much testing myself as I know next to zilch about string 
internals ><

The text that describes hex strings says that they have to have an even 
number of digits, but this would seem to imply that they have to have a 
multiple of 4 or 8 for wstrings and dstrings respectively, which makes 
sense, but I'm not sure that can be verified in the lexing of a string 
literal without insane lookahead rules ><

But, then I guess that is why the spec says that hex strings are exempt 
from the valid UTF rule, and in that case hexstrings should really make 
byte arrays rather than strings, but failing that, always chars and not 
anything wider.

A...