Re: Quranic Proposal - Dynamic glyph substitution with OpenType

["Thomas Milo" <t dot milo at chello dot nl>]

> Mohammed, Nadim, and Abdulhaq, in that case you should
> be able to re-design your Quran font as an OpenType
> font and implement the behaviour that Tom is
> suggesting for tanweens and other cases. As he says,
> it seems that OpenType already handles dynamically
> substituting a single glyph for a sequence of
> codepoints. This way additional characters will not be
> necessary except for a new "chairless hamza" and a new
> logical character for trigerring variant tanween
> glyphs (are there any others?)

In order to cut through the red tape, I suggest to build the correct
Arabic-alone behaviour for hamza using U+0621. We successfully did that
already for sequences like lam-hamza-alif. We are still working on sequences
of the type yaa'-hamza-<any connecting letter> as in /yâ yaHyà/.

In the mean time, a proposal should be made to add a new Arabic letter
floating hamza to the standard that is conditionally equivalent to U+0621.

t