Historic scripts as MAYBE?

[Frank Ellermann]

Paul Hoffman wrote:
 
> All of these are expressed in blocks, and therefore could easily be 
> added to the IgnorableBlocks (D) category, which already contains 
> Combining Diacritical Marks for Symbols, Musical Symbols, Ancient 
> Greek Musical Notation, and the Private Use Area.
 
> I propose that we add all archaic scripts, as defined by the Unicode 
> Consortium, to this category.

In Unicode 5.1 Phaistos Disc, Carian, Lycian, and Lydian were added.

For IDNAbis the list could be extended with say Glagolitic, Deseret,
and Shavian.  But that requires great care, excluding Osmanyan could
backfire if a future country in the former Somalia adopts it again.

 Frank