From: Philippe Verdy (firstname.lastname@example.org)
Date: Tue Nov 04 2003 - 09:54:26 EST
From: "Peter Kirk" <email@example.com>
> The only issue is the
> medial meteg, which can be solved most simply by defining a new medial
> meteg character (or variation selector wiith meteg) which always
> combines with an adjacent hataf vowel.
According to Chapter 15 of the Unicode Standard:
A variation sequence, which always consists of a base
character followed by the variation selector, may be specified
as part of the Unicode Standard. That sequence is referred to
as a variant of the base character. The variation selector affects
only the appearance of the base character, and only in the
variation sequences defined in this Standard. The variation
selector is not used as a general code extension mechanism.
In other words, variation selectors are combining characters of combining
class 0, added after a base character (non combining, class 0). It occurs in
encoded sequences like <BASE, VS> which may then be followed by other
combining characters in any combining class.
This is confirmed later:
The base character in a variation sequence is never a combining
character or a decomposable character. The variation selectors
themselves are combining marks of combining class 0 and are
default ignorable characters. Thus, if the variation sequence is
not supported, the variation selector should be invisible and
So the standard variation selectors cannot be used to create a variant of
meteg, because meteg is neither a base character, nor of combining class 0.
All that can be done is to create a new variation selector for combining
characters. It could be created:
- either within a new generic set of variation selectors for combining
characters (noted CVSn here) to produce sequences like <HEBREW POINT
- or as Hebrew specific variation selectors for Hebrew combining
characters (noted HVSn here); this would produce sequences like <HEBREW
POINT METEG><HEBREW HVSn> which should be treated at <HEBREW POINT METEG> by
renderers or collators that do not implement this variation selector.
In either case, such types of variation selector sequences needed to
override the rendered position of the previous combining character should be
allowed only for registered sequences, like with other base characters with
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