Jim A wrote (re char:glyph ratios):
>Thai U+0E01 87 88
That doesn't seem right to me. Both tho thaan and yo ying need
alternate forms that have the subscript appendage removed for
combinations with subscript vowels. (Some implementations may
keep the appendages and lower the vowels, but some don't, and
those that don't definitely need two extra glyphs.) Also some
implementations of superior and inferior diacritics (vowels,
tones, etc.) may use glyph substitution rather than positioning
tables like gpos, and in those cases, you'd need an extra
30-or-so glyphs. So actual numbers will commonly show a greater
difference. For example, in MS's current implementations for
Thai, e.g. the Cordia New font that comes with IE5, there are
27 extra glyphs.
That is still well short of the 3:1 ratio mentioned for other
scripts, though. The key difference in this case is the absense
of ligatures (conjuncts).
Peter
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