Combining Marks and Variation Selectors

Richard Wordingham via Unicode unicode at
Sat Feb 1 16:10:44 CST 2020

Why are variation selectors not allowed for combining marks?  I can see
a reason for them not being allowed on characters with non-zero
canonical combining classes, but not for them being prohibited for
combining marks that are starters, i.e. have ccc=0.


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