UCA 6.2: adjust "ducet" tailoring

Description

There are new differences between the DUCET and the CLDR root collation, in particular ten new Tibetan contractions in CLDR that are missing from the DUCET. We should adjust the CLDR root "ducet" tailoring accordingly.

We might have to suppress contractions for some code points (0FB2 & 0FB3) and then re-add the ones that are in the DUCET.

Note: Full matching of DUCET behavior will also depend on table builder code not automatically adding prefix contractions, but that is out of scope for CLDR.

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TracBot
May 10, 2019, 4:09 AM
Trac Comment 1 by —2012-08-17T05:29:39.000Z

Apparently CLDR "ducet" has already been out of sync with the actual DUCET. Richard Wordingham writes:

For example, in DUCET (both 6.1.0 and 6.2.0d9), we have, when the

alternate setting is non-ignorable, U+10A7E < U+10A7F < U+10917 with

nothing between successive items. In the CLDR root, its tightest

bounds, for UCA 6.1.0 and 6.2.0 on 24 June at least, are U+111C7 <

U+10A7F < U+0060.

 

There are other changes [...]

TracBot
May 10, 2019, 4:09 AM
Trac Comment 2 by —2012-08-17T16:48:32.000Z

Note: U+FFFE & U+FFFF are not supposed to be tailorable, so the "ducet" tailoring cannot revert them to the regular DUCET implicit CEs.

TracBot
May 10, 2019, 4:09 AM
Trac Comment 1.3 by richard.wordingham@4d88d5886b0121ea—2012-08-17T18:48:47.000Z

Replying to (Comment 1 markus):

> There are other changes [...]

In , it is noted that other changes include the ordering of:
U+1D371 and U+02D0 (tidying up of numbers and punctuation)
U+A782 and U+20A8 (moving of currency symbols to a single block)
U+FDF6 and U+FDFC (moving of currency symbols to a single block)

I've added the reason for the change by way of explanation to the raiser of .

TracBot
May 10, 2019, 4:09 AM
Trac Comment 5 by —2012-10-01T19:46:42.660Z

Postponing. The "ducet" tailoring is currently empty; it will need a bit of work to establish in the first place, not just to add new differences.

TracBot
May 10, 2019, 4:09 AM
Trac Comment 6 by —2012-11-29T02:53:49.455Z

Obsolete: The "ducet" tailoring was removed with .

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Markus Scherer

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Markus Scherer

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