[Lazarus] UTF8 string compare with correct locale sorting

Hans-Peter Diettrich DrDiettrich1 at aol.com
Thu Oct 17 21:56:17 CEST 2013

Jürgen Hestermann schrieb:
> I fully aggree on this
> http://www.utf8everywhere.org/
> and therefore want to use UTF8 in all my programs.
> But the problem is sorting UTF8 strings.
> According to
> http://forum.lazarus.freepascal.org/index.php?topic=15256.0
> UTF8CompareText would be the best choice and it runs quite fast.
> But it does not obey sorting by locale (i.e. german umlauts end
> up at the end of the list although they need to be sorted together with
> their corresponding non-umlaut  characters (Ü at U, Ä at A, and so on).
> Does *any* Pascal UTF8 string compare function exist that does this?

Such functions should be provided by the system's 
Unicode/internationalization library. When they can be located there, a 
wrapper can be added to the RTL.


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