RE: Greek Prosgegrammeni

From: Marco Cimarosti (marco.cimarosti@europe.com)
Date: Wed Nov 08 2000 - 05:32:49 EST


John Jenkins wrote:

> On Tuesday, November 7, 2000, at 01:14 PM, James Kass wrote:
>
> > Does anyone know why the iota subscript has been used
> > with the capital vowels on the charts?
> >
>
> It was an error and has been fixed with the 3.0 charts.

But, even if you do so, we are left with a "wrong" canonical decomposition:

1FBC;GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI;Lt;0;L;0391
0345;;;;N;;;;1FB3;

According to James' statement (which is not totally supported by others,
anyway), the decomposition should be U+0391 U+0399 (GREEK CAPITAL LETTER
ALPHA + GREEK CAPITAL LETTER IOTA).

But I understand that canonical decompositions cannot be changed because of
backward compatibility, so applications will have to:

1) Violate the canonical decomposition, defining a "higher protocol" for
this case;

2) Change the rendering engines in order to display sequence U+0391 U+0345
(GREEK CAPITAL LETTER ALPHA + COMBINING GREEK YPOGEGRAMMENI) using the same
glyph(s) used for U+1FBC (GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI).

3) Leave with the fact that two canonically equivalent texts can be rendered
differently.

_ Marco

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