ZWJ, ZWNJ, CGJ and combination

[Peter Kirk]

Are the characters ZWJ, ZWNJ and CGJ base characters, combining 
characters, neither, or even both? Which specific character properties 
should I look at to decide this?

Are these characters legal within combining character sequences? Can ZWJ 
and ZWNJ be used to control ligation of combining characters? If not, is 
there an alternative mechanism for this?

--
Peter Kirk
[EMAIL PROTECTED] (personal)
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http://www.qaya.org/