UTS #10: Unicode Collation Algorithm (UCA)

From: Mark Davis (mark.davis@jtcsv.com)
Date: Wed Jul 17 2002 - 13:30:31 EDT

There is a new version of the UCA on http://www.unicode.org/reports/tr10/

The most significant changes are:

- Additional collation weights for newer characters
- Weight fixes for well-formedness and consistency
- An additional conformance clause
- Additional well-formedness constraints
- Removal of completely ignorable characters
- Treatment of ignorables after variables
- Modified and reorganized implicit weight derivation.
  (In particular, CJK characters and unassigned characters are given
different weights.)
- Use of the Logical_Order_Exception property
- Notes on notes on linguistic applicability.
- More discussion of stability

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