[EMAIL PROTECTED] wrote:
> [...] �(why couldn't I find this in uppercase?) [...]
Because the corresponding uppercase is not a character, it is two: "IJ". In
fact, "�" is a ligature, optionally used in Dutch to represent the sequence
"ij". E.g. "ijs" (= ice, ice-cream) is also spelled "�s", and both are
capitalized as "IJs" (not a typo: "Ijs" would be a spelling error).
A similar case is the German ligature "�", that can also be spelled "ss"
(this is just an alternate spelling in Germany, but it is mandatory in
Switzerland), and is uppercased as "SS".
These are just a few ("easy") examples of cases not handled by
case-folding-based sorting algorithms. There are much worse cases, like
letters having different uppercase forms in different languages. E.g., in
Turkish, "I" is not the uppercase of "i": it is the uppercase of a different
letter (dotless "i"), that sorts after "i" (or was it before "i"?).
_ Marco
