Re: Proposed new characters updated in Pipeline Table

From: Philippe Verdy <>
Date: Mon, 15 Aug 2011 19:38:07 +0200

2011/8/13 mmarx <>:
>>> I attach a Garshuni document from
>>> Beit al-Qammar showing Arab vowel
>>> marks -- just as the Syriac communmties
>>> are using Syriac vowel marks in Arabic
>>> script text -- and (in the second line
>>> on the left) wasla above olaph.
>>> So whatever the status of wasla mark
>>> will be fore Arabic, for Syriac/Garshuni
>>> it is need as a normal mark in normal text.
>> Unicode cannot encode a combining Wasla (because of various stability
>> policies), so if Syriac needs a Wasla to be shown only over a letter
>> or two, one needs to propose precomposed characters for them. Just
>> like the existing Arabic Alef-Wasla.

Why not? If the character is new, it can perfectly be encoded with
whatever character property is needed, including with a non-zero
combining class, if it fits. The stability policy aboud combining
sequences is only for sequences of characters that are already encoded
and for which decomposition mappings (and the related standard
normalizations), as well as basic case mappings in the UCD cannot be
The stability policy does not concern currently unassigned code points
(except possibly a few ones: the directionality of all code points
within some designated RTL blocks, should they be currently assigned
to characters or not; and the reservation of all assigned and
unassigned code points in the few blocks allocated only for combining
Received on Mon Aug 15 2011 - 12:41:11 CDT

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