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8 # Special case for final form of sigma.
10 # C is preceded by a sequence consisting of a cased letter and then zero or more case-ignorable characters,
11 # and C is not followed by a sequence consisting of zero or more case-ignorable characters and then a cased letter.
12 # 03A3; 03C2; 03A3; 03A3; Final_Sigma; # GREEK CAPITAL LETTER SIGMA
13 # With translit rules, easiest is to handle the negative condition first, mapping in that case to the regular sigma.
14 Σ } [:case-ignorable:]* [:cased:] → σ;
15 [:cased:] [:case-ignorable:]* { Σ → ς;