Re: UTS #10: Unicode Collation Algorithm (UCA)

From: Michael \(michka\) Kaplan (
Date: Sun Jul 21 2002 - 09:15:04 EDT

From: "Michael (michka) Kaplan" <>

> Nit: Microsoft does not actually use the UCA for their collation support.

After receiving many off-list mails asking about why on earth this would be
the case, I'd like to remind the list membership about the sequential flow
of time... :-)

The first DUTR#10 is from the end of March 1997. It remained in draft status
until at least its fourth rev (June 1999). Even in its present form, it does
not contain the tailorings to match the functionality provided in Windows.
Why would Microsoft wait?

The same thing applies to many database engines from Sybase, Oracle, IBM,
and others -- engines whose collation support predates even the notion of
the Unicode Collation Algorithm.

The UCA provides a very nice framework. But if you already have a house, who
needs a new frame?


Michael Kaplan
Trigeminal Software, Inc. --

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