How to detect start of Unicode symbol and count amount of graphemes

Mon Oct 6 10:40:42 PDT 2014

On Mon, 06 Oct 2014 17:28:43 +0000
Uranuz via Digitalmars-d-learn <digitalmars-d-learn at puremagic.com>
wrote:

> If it is true it means that first byte of sequence found and I 
> can count them. Am I right that it equals to number of graphemes, 
> or are there some exceptions from this rule?
alot. take for example RIGHT-TO-LEFT MARK, which is not a grapheme at
all. and not a "composite" for that matter. ah, those joys of unicode!
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