Re: ZWJ+ZWNJ+ZWJ (Was: ZWJ and Turkish)

>No, that is not at all what it means.  ZWJ+ZWNJ+ZWJ causes shaping but
>breaks any possible ligature.  This works because each actual letter is
>adjacent to a ZWJ, causing it to be shaped appropriately, but the
>presence of a ZWNJ prevents ligaturing.

And I think Roozbeh considers it the worst thing in Unicode since it's an 
unfortunately awkward way to achieve that end. For example, if there had 
been a ZWNL character added to Unicode, then presumably A1 + ZWNL + A2 
(where A1 and A2 are Arabic connecting characters that would normally 
ligate) will appear as connected but not ligated. Unicode does not have a 
ZWNL, however, but ZWJ + ZWNJ + ZWJ achieves exactly the same effect.


- Peter


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Peter Constable

Non-Roman Script Initiative, SIL International
7500 W. Camp Wisdom Rd., Dallas, TX 75236, USA
Tel: +1 972 708 7485
E-mail: <peter_constable@sil.org>