[debbugs-tracker] bug#9580: closed (sort 8.5 bug?)

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Your message dated Thu, 22 Sep 2011 16:01:44 -0600
with message-id <address@hidden>
and subject line Re: bug#9580: sort 8.5 bug?
has caused the debbugs.gnu.org bug report #9580,
regarding sort 8.5 bug?
to be marked as done.

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9580: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9580
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> --- Begin Message ---
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>
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> Subject: 
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> sort 8.5 bug?
>
>
>
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> Date: 
>
> Thu, 22 Sep 2011 13:55:05 -0700 (PDT)
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>
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>
> #########################################################
> Ubuntu 11.04
> 2.6.38-11-generic-pae
>
> sort --version
> sort (GNU coreutils) 8.5
> Copyright (C) 2010 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>.
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
>
> Written by Mike Haertel and Paul Eggert.
>
> ##########################################################
> I created two testing files: File_A and File_B.
>
> cat File_​A
> .
> BAD.
>
> sort File_A
> .
> BAD.
>
> cat File_​B
> .s
> BAD.s
>
> sort File_B
> BAD.s
> .s
>
> So basi­cally, append­ing a let­ter after ‘.’ would reverse the sort order.
> That doesn't look quite right. Is there an explanation for this behavior?
> I've tried the same on a Mac, and their sort (5.93) woks just fine.
>
> I've also tried set LC_ALL='C'. Just in case it's a funky locale problem,
> but didn't make a difference.
>
> -- 
> View this message in context: 
> http://old.nabble.com/sort-8.5-bug--tp32503840p32503840.html
> Sent from the Gnu - Coreutils - Discuss mailing list archive at Nabble.com.
>
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#9580: sort 8.5 bug?
>
>
>
>
> Date: 
>
> Thu, 22 Sep 2011 16:01:44 -0600
>
>
>
>
> User-agent: 
>
> Mozilla/5.0 (X11; U; Linux x86_64; en-US;	rv:1.9.2.22) Gecko/20110906 Fedora/3.1.14-1.fc14	Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.14
>
>
>
>
> tag 9580 notabug
> thanks
>
> On 09/22/2011 02:55 PM, Sean Sun wrote:
> > So basi­cally, append­ing a let­ter after ‘.’ would reverse the sort order.
> > That doesn't look quite right. Is there an explanation for this behavior?
> > I've tried the same on a Mac, and their sort (5.93) woks just fine.
>
> Thanks for the report, but this is not a bug in sort.  Actually, both 
> versions that you tried (8.5 and 5.93) sort in the same way, where the 
> difference is in your choice of locale, and you are hitting this FAQ:
> https://www.gnu.org/software/coreutils/faq/#Sort-does-not-sort-in-normal-order_0021
>
> Newer coreutils added a --debug option to help you learn why the bug is 
> in your expectations and not in sort (8.13 is current, but --debug has 
> been present since 8.6).  So let's use it:
>
> $ printf '.\nBAD.\n.s\nBAD.s\n' | sort --debug
> sort: using `en_US.UTF-8' sorting rules
> .
> _
> BAD.
> ____
> BAD.s
> _____
> .s
> __
>
> $ printf '.\nBAD.\n.s\nBAD.s\n' | LC_ALL=C sort --debug
> sort: using simple byte comparison
> .
> _
> .s
> __
> BAD.
> ____
> BAD.s
> _____
>
>
> Remember, the en_US.UTF-8 locale uses dictionary order collation, which 
> treats punctuation as insignificant, and blends case.  That is, 's' and 
> '.s' collate as the same string, and '.s' is larger than 'BAD.' since 
> 's' comes later in the alphabet than 'B'.
>
> On the other hand, the C locale uses ASCII ordering, where every byte is 
> significant, and '.' sorts before 'B'.
>
> > I've also tried set LC_ALL='C'. Just in case it's a funky locale problem,
> > but didn't make a difference.
>
> Are you sure you used the correct syntax?  The way you wrote it, it 
> looks like you tried:
>
> $ set LC_ALL='C'
>
> But that is neither sh (export LC_ALL=C) nor csh (setenv LC_ALL C) 
> syntax.  And your problem is absolutely explained by locale, and would 
> indeed be "solved" if you indeed had set LC_ALL=C like you meant to do.
>
> --
> Eric Blake   address@hidden    +1-801-349-2682
> Libvirt virtualization library http://libvirt.org
>
>
> --- End Message ---