Re: Internationalized CLASS attributes
On Oct 17, 8:37pm, Keld J|rn Simonsen wrote:
> 1. some characters may only have a lower case form, so converting
> to upper case is not posssible. Example: German <ss>, Greenlandic <kra>.
Yes. As the quote says, there are "many more lowercase forms than there are
upper". Hence the recommendation that if case folding is performed, the
conversion is to lower case.
> 2. a number of lower case forms exists where there is only one upper
> case form, example Greek sigma, where there is a terminal sigma.
> In the first instance I can see a reason to normalize on lower-case,
> but in the second case I see problems in chosing which lower case
> to normalize on.
Yes. There is also a problem with accented characters, as the
typewriter-inflicted convention in some languages is to omit accents on
upper-case letters. I certainly did not mean to suggest that folding to
lower case was problem free; rather that there are more problems when
folding to upper case.
> I would rather that you did not normalize, but made a case-independent,
> or case-and-accent-independent comparison,
Sorry, could you eplain how a case-independent comparison differs from case
folding (or normalization) ?
> for example using the functions and tables of the forthcoming ISO
> sorting standard ISO/IEC 14651.
Thanks for the reference. Are these tables available online?
Chris Lilley, W3C [ http://www.w3.org/ ]
Graphics and Fonts Guy The World Wide Web Consortium
http://www.w3.org/people/chris/ INRIA, Projet W3C
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