Peter T. Daniels scripsit:

> > As for the inherent vowel, couldn't it be considered as a "zero" vowel
> > grapheme?
>
> Please define "grapheme" in a coherent, script-independent way!

A grapheme of a given script is a unit which a graphemosystematically
naive user of the script is disposed to point at and say without
hedging "This is a basic unit of the script."

I grant that this definition is only subjectively objective, but
I believe it to be useful. It is rather analogous to the use of "word",
unqualified, in ordinary linguistics.

--
John Cowan <jcowan@...> http://www.reutershealth.com
I amar prestar aen, han mathon ne nen, http://www.ccil.org/~cowan
han mathon ne chae, a han noston ne 'wilith. --Galadriel, LOTR:FOTR