Re: locale specific ordering in EN_US vs. characterset collation rules for UTF-8

[Linda Walsh]

Paolo Bonzini wrote:
> Il 28/06/2013 07:04, Linda Walsh ha scritto:
> >
> > Chet Ramey wrote:
> >> The world is larger than glibc and the glibc locale definitions.  We need
> >> a solution that encompasses all of it.  That solution should, and maybe
> >> will, include glibc, but that is not sufficient by itself.
> > ----
> >     I don't suppose it is possible to use the Unicode
> > collation order when using unicode?
>
> When matching regular expressions, people usually want to treat case
> specially; for example [A-E] should exclude lowercase a/b/c/d/e.
> Unfortunately, this is not the case when collating other things.  The
> Unicode collation standard in fact says ("1.1 Multi-Level Comparison"):
>
>    Case differences (uppercase versus lowercase), are typically
>    ignored, if the base letters or their accents differ
That's not the unicode algorithm I referred to.

A-Z < a-z in the one I referred to.

The ordering looks very similar to 'C' with extensions to cover
accents... but the case for latin letterin in particular was ordered just as in
the 'C' local.