I’m a bit shocked at the realization that final sigma-correct lowercasing requires unbounded lookahead.
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ß and Turkish İ at least work within bounded space.
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Replying to @hsivonen
For an unbounded number of combining marks? Something else?

May 16, 2019 · 9:06 PM UTC

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Replying to @davidbaron
The spec says case-ignorables, and at a glance all case-ignorables appear to be combining, yes.
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