Some of the special casing rules are not clear.
# FINAL: The letter is not followed by a letter of category L* (e.g. Ll,
Lt, Lu, Lm, or Lo).
What happens if the word with the final sigma is followed by a period or
comma etc. It should be final. But what about a hyphenated word?
Technically it is still followed by a letter. The text needs clarification.
It seems that final should be when it is followed by a space before a letter
or followed by no more letters.
Another issue - case folding. Case folding appears to be the same as a
shift to upper followed by a shift to lower. The sigma adjustment is not
necessary because the two forms are adjacent and will not affect sort
sequences. The consolidation if dotted and dotless i should not impact
compares in Turkish locations but the Lithuanian removal of u0307 (combining
dot above) after i will affect the Lithuanian locale. However, this should
not affect other locales. It is probably a good idea to do this for all
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