RE: AW: Sorting Upper-Case first. Microsoft bug?

Thank you Mike..

Regards,
Mukul

--- Michael Kay <mhk@xxxxxxxxx> wrote:
> > *It would be interesting to know how Saxon
> implements
> > this behaviour..* if M. Kay will be kind to
> answer..
> > 
> 
> I thought you would never ask. I'm an optimist ;-)
> 
> The answer is different for Saxon 6.x and Saxon 7.x.
> 
> In Saxon 6.x, you can write your own collating
> functions as a plug-in,
> but if you don't, then two strings are compared as
> follows:
>   
>   1. The two strings are compared with case
> normalized and accents
> stripped, using Unicode codepoint order of the
> normalized characters.
> 
>   2. If step (1) finds that the strings are equal,
> they are compared
> with case normalized but without accents stripped,
> again using codepoint
> order.
> 
>   3. If step (2) finds that the strings are equal,
> the outcome depends
> on the case of the first character that differs in
> the two strings,
> taking account of the case-order option on xsl:sort.
> 
> Case normalization relies on the Java method
> toLowerCase. Accent
> stripping is implemented only for characters in the
> upper half of the
> Latin-1 set.
> 
> The above is essentially a simplified implementation
> of the Unicode
> Collation Algorithm.
> 
> In Saxon 7.x, Saxon uses the collation capabilities
> of JDK 1.4. You can
> select any collation supported by the JDK. The
> default is selected
> according to your locale, or according to the
> language if lang is
> specified on xsl:sort. If case-order is upper-first,
> then the action of
> the selected Java collation is modified as follows:
> if the Java
> collation decides that two strings collate as equal,
> then Saxon examines
> the two strings, looking for the first character
> that differs between
> the two strings. If one of these is upper case, then
> that string comes
> first in the sorted order.
> 
> Michael Kay
> 
> 
> 
>  XSL-List info and archive: 
> http://www.mulberrytech.com/xsl/xsl-list
> 


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