# https://github.com/unicode-org/cldr/blob/release-37/common/transforms/de-ASCII.xml $AE = [Ä {A \u0308}]; $OE = [Ö {O \u0308}]; $UE = [Ü {U \u0308}]; [ä {a \u0308}] > ae; [ö {o \u0308}] > oe; [ü {u \u0308}] > ue; $AE } [:Lowercase:] > Ae; $OE } [:Lowercase:] > Oe; $UE } [:Lowercase:] > Ue; $AE > AE; $OE > OE; $UE > UE; ::Latin-ASCII;