Peter T. Daniels scripsit:

> I don't know what "Unicode combining character" means, but surely there
> are some of those that aren't diacritics?

To be sure. In Hebrew alone, we have dagesh/mappiq, which is a diacritic;
vowel points, which are vowel points; and accents, which are a separate
layer of the text altogether. All are formally combining characters.

OTOH, the stroke in ΓΈ is not a combining character (it's not treated
as a separate character at all, any more than the dot on i), and the
IPA rhotic hook is not either (it's considered a separate letter).

--
A rabbi whose congregation doesn't want John Cowan
to drive him out of town isn't a rabbi, http://www.ccil.org/~cowan
and a rabbi who lets them do it jcowan@...
isn't a man. --Jewish saying http://www.reutershealth.com