alternate=blanked is similar to alternate=shifted, however the differences must show up at identical level rather than at quaternary level, effectively making the set of quaternary differences empty. Combining it with strength=quaternary should do the same as strength=tertiary.
The ICU collator only has strength and isShifted. blanked must be represented by suppressing the quaternary level.
alternate=blankedis similar toalternate=shifted, however the differences must show up atidenticallevel rather than atquaternarylevel, effectively making the set ofquaternarydifferences empty. Combining it withstrength=quaternaryshould do the same asstrength=tertiary.The ICU collator only has
strengthandisShifted.blankedmust be represented by suppressing thequaternarylevel.This fixes QT4 test case
compare-041.