Bob Hallissy wrote:
> 1) Is the Arabic Joining Class [...] normative or informative?
Like it or not, it is normative. See
ArabicShaping.txt (Section 8.2)
Basic Arabic and Syriac character shaping properties, such as initial,
medial and final shapes. These properties are *normative* for minimal
shaping of Arabic and Syriac.
((( Personally, I think that this makes little sense. There is an even more
"minimal" shaping, that uses a single glyph for class "R" characters and 2
glyphs for most class "D" characters. Such an approach is used in the
Iranian standard charset, in some old DOS Arabic code pages, and in many
"font encodings". )))
> 2) U+0649 (ARABIC LETTER ALEF MAKSURA) has joining class "R",
> meaing in
I notice one more incongruity in entry U+0649: it is assigned to Link Group
"YEH". This means that it should have the same *four* glyphs as letter YEH,
with a different combination of dots.
And, thus, one more evidence that it should be in class "D".
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