Re: Merging combining classes, was: New contribution N2676

From: Peter Kirk (
Date: Tue Oct 28 2003 - 04:35:22 CST

On 27/10/2003 16:39, Philippe Verdy wrote:

> ...
>The backwards marking is not restricted to French accents in collation
>level 2. You can use reverse ordering at any tailored level to fit other
>needs, and you can also insert an extra collation level.
>So I think that Mark is right here as it gives you full control on the
>of the collating sequence at each level of the collation keys. The case 2
>is effectively an exception.
>The bad thing is that the current default UCA ordering table does not create
>such collation keys with intermediate levels for Hebrew vowels, and you
>need tailoring to create a base level with consonnants, one level with
>vowels, a third level for sin/shin dots, a fourth for meteg, a fifth for
>unless the text is encoded in logical order using the CCO-convention.
Also, if I am correct, the results of inserting an extra level e.g. for
sin/shin dots (which would have to be above that for vowels) are not
identical to that of having them at the same level but with sin/shin dot
preceding the vowel in the string. It is perhaps uncertain which is
preferable. But the default certainly needs to be one or the other, not
sin/shin dot on the same level as vowels but after them in the string.

Peter Kirk (personal) (work)

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