To reiterate the original question: "what percentage"?
What do you think are "random obscure glyphs"? Is the Turkish lowercase 'i' (ı) one of them? What about the German Eszett (ß)? Is 'ö' a random obscure glyph? What about 'ø'?
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What do you think are "random obscure glyphs"? Is the Turkish lowercase 'i' (ı) one of them? What about the German Eszett (ß)? Is 'ö' a random obscure glyph? What about 'ø'?