How to improve autodecoding? (Was: The Case Against Autodecode)

[Andrei Alexandrescu via Digitalmars-d]

On 5/31/16 2:21 PM, Jonathan M Davis via Digitalmars-d wrote:
> I think that the first step is getting Phobos to work with all ranges of
> character types - be they char, wchar, dchar, or graphemes. Then the
> algorithms themselves will work whether we have auto-decoding or not. With
> that done, we can at minimum tell folks to use byCodeUnit, byChar!T,
> byGrapheme, etc. to get the correct, efficient behavior. Right now, if you
> try to use ranges like byCodeUnit, they work with some of Phobos but not
> enough to really work as a viable replacement to auto-decoding strings.

Great. Could you put together a sample PR so we understand the 
implications better? Thanks! -- Andrei