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Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?
From: |
Greg Wooledge |
Subject: |
Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z? |
Date: |
Mon, 21 May 2012 15:27:38 -0400 |
User-agent: |
Mutt/1.4.2.3i |
On Mon, May 21, 2012 at 12:19:26PM -0700, Linda Walsh wrote:
> Greg Wooledge wrote:
> >For instance, on HP-UX 10.20, in the en_US.iso88591 locale:
> > A a ... B b
> >Meanwhile, on Debian 6.0, in the en_US.iso88591 locale:
> > a A ... b B
> So which is correct?
Both. Locale collating order is determined by the OS. You cannot
rely on it, unless you set the LC_COLLATE variable to "C" or "POSIX",
in which case you get ASCII behavior (accented letters are not part
of the character set at all).
> Anyone wanting to reference an upper or lower case range
> [a-z] or [A-Z], is gonna hurt from this.
Correct.
imadev:~$ echo Hello World | tr 'A-Z' 'a-z'
hÉMMÓ wÓSMÐ
imadev:~$ echo Hello World | tr '[:upper:]' '[:lower:]'
hello world
You *cannot* use [a-z] or [A-Z] any more, except in the C/POSIX locale.
If you want to match lowercase characters, you should be using [[:lower:]],
and for uppercase characters, [[:upper:]].
- locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/20
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Greg Wooledge, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Chris F.A. Johnson, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?,
Greg Wooledge <=
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Chet Ramey, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Eric Blake, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Chet Ramey, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Eric Blake, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Eric Blake, 2012/05/21
- Re: locale specific ordering in EN_US -- why is a<A<b<B<y<Y<z<Z?, Linda Walsh, 2012/05/21