Unicode Arabic Mark Rendering UTR #53 Now Published
arno.schmitt via Unicode
unicode at unicode.org
Wed Oct 10 03:14:12 CDT 2018
The paper adopted treats the word shown (fa-ʾulāʾika) writing
with an unkown letter + kasra below + hamza below.
I thought, in Unicode I should use 'ARABIC LETTER YEH WITH HAMZA ABOVE'
(U+0626) or its phonological equivilant 'ARABIC LETTER YEH WITH HAMZA
BELOW' (U+0826) or the basic letter 'ARABIC LETTER YEH WITH HAMZA'
(U+0825). My error or an inconsistency in Unicode?
Am 09.10.2018 um 21:32 schrieb announcements at unicode.org:
> exampleThe combining classes of Arabic combining characters in Unicode
> are different than combining classes in most other scripts. They are a
> mixture of special classes for specific marks plus two more generalized
> classes for all the other marks. This has resulted in inconsistent
> and/or incorrect rendering for sequences with multiple combining marks
> since Unicode 2.0.
> The Arabic Mark Transient Reordering Algorithm (AMTRA) described in UTR
> #53 <http://www.unicode.org/reports/tr53/> is the recommended solution
> to achieving correct and consistent rendering of Arabic combining mark
> sequences. This algorithm provides results that match user expectations
> and assures that canonically equivalent sequences are rendered
> identically, independent of the order of the combining marks.
> The concepts in this algorithm were first proposed four years ago by
> Roozbeh Pournader. We are pleased it has now been published as an
> official Technical Report.
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