Bob Hallissy wrote:
> 1) Is the Arabic Joining Class [...] normative or informative?
Like it or not, it is normative. See
<http://www.unicode.org/Public/UNIDATA/UnicodeCharacterDatabase.html>, that
reads:
...
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".
_ Marco
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