VLERange: a range in between BidirectionalRange and RandomAccessRange

[Don]

Michel Fortin wrote:
> On 2011-01-11 20:28:26 -0500, Steven Wawryk <stevenw at acres.com.au> said:
>> Why not choose which of these abstractions is most appropriate in a 
>> given situation instead of trying to shoe-horn both concepts into a 
>> single abstraction, and provide for easy conversion between them?  
>> When character representation is the primary requirement then make it 
>> a bidirectional range of code points.  When storage representation and 
>> random access is required then make it a random access range of code 
>> units.
> 
> I think you're right. The need for a new concept isn't that great, and 
> it gets complicated really fast.

I think the only problem that we really have, is that "char[]", 
"dchar[]" implies that code points is always the appropriate level of 
abstraction.