Are the collation tests meant to have been updated for the change in the draft of Step 2.1 of the collation algorithm? I haven't changed what I believe to be a UCA 6.1.0-compliant implementation, yet my code now passes the 6.2.0 tests for both DUCET and CLDR root. (I understand that the error in one of the UCA 6.1.0 tests has been reported on my behalf.)
Is there supposed to be a test for compliance with the change? If not, and the change to the text of Step 2.1 will not be reversed, one ought to be added, perhaps based on a sequence <U+04D0 CYRILLIC CAPITAL LETTER A WITH BREVE, U+0F73 TIBETAN VOWEL SIGN II>, which after the change should collate before <U+04D0, U+0F72 TIBETAN VOWEL SIGN I>, rather than after as now. (The change mechanism is that after the change the discontiguous contraction for the components of U+04D0, will prevent the contiguous contraction for the components of U+0F73.) Richard.
