From: arno (email@example.com)
Date: Sat Jan 05 2008 - 02:05:08 CST
you wrote a long message, but most of it is about font technology, not
Relevant is only your suggestion not to change the properties of U+0621
to protect "existing implementations".
But in your last intervention you've written that all existing fonts
handle chairless hamza between joining letters wrongly.
Why should we want to protect a mistake?
There are no cases in Arabic where the present behaviour of existing
fonts that conform to the present description of U+0621 is correct.
If Unicode can define a new "Quranic Hamza" properly, it should do it
for U+0621 instead.
Again: the only possible reason not to do it, is: The present dividing
behaviour is asked for by an other language written with the Arabic
script. In that case U+0621 should be depreciated for the Arabic
language as is ARABIC LETTER HIGH HAMZA (U+0674) and the new hamza
should be named 'ARABIC LETTER ARABIC HAMZA'
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