GNU bug report logs - #69951
coreutils: printf formatting bug for nb_NO and nn_NO locales

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From: Thomas Dreibholz <dreibh <at> simula.no>
To: 69951 <at> debbugs.gnu.org
Subject: bug#69951: coreutils: printf formatting bug for nb_NO and nn_NO locales
Date: Fri, 22 Mar 2024 21:22:30 +0100

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Hi,

I just discovered a printf bug for at least the nb_NO and nn_NO locales 
when printing numbers with thousands separator. To reproduce:

#!/bin/bash
for l in de_DE en_US nb_NO ; do
   echo "LC_NUMERIC=$l.UTF-8"
   for n in 1 100 1000 10000 100000 1000000 10000000 ; do
      LC_NUMERIC=$l.UTF-8 /usr/bin/printf "<%'10d>\n" $n
   done
done

The expected output of "%'10d" is a right-formatted number string with 
10 characters.

The output of the test script is fine for e.g. LC_NUMERIC=de_DE.UTF-8 
and LC_NUMERIC=en_US.UTF-8:

LC_NUMERIC=de_DE.UTF-8
<         1>
<       100>
<     1.000>
<    10.000>
<   100.000>
< 1.000.000>
<10.000.000>
LC_NUMERIC=en_US.UTF-8
<         1>
<       100>
<     1,000>
<    10,000>
<   100,000>
< 1,000,000>
<10,000,000>

However, for LC_NUMERIC=nb_NO.UTF-8 and LC_NUMERIC=nn_NO.UTF-8, the 
formatting is wrong:

LC_NUMERIC=nb_NO.UTF-8
<         1>
<       100>
<   1 000>
<  10 000>
< 100 000>
<1 000 000>
<10 000 000>
LC_NUMERIC=nn_NO.UTF-8
<         1>
<       100>
<   1 000>
<  10 000>
< 100 000>
<1 000 000>
<10 000 000>

I reproduced the issue with coreutils-8.32-4.1ubuntu1.1 (Ubuntu 22.04) 
as well as coreutils-9.3-5.fc39.x86_64 (Fedora 39).

Under FreeBSD 14.0-RELEASE (coreutils-9.4_1), the output looks slightly 
better but is still wrong:

LC_NUMERIC=nb_NO.UTF-8
<         1>
<       100>
<    1 000>
<   10 000>
<  100 000>
<1 000 000>
<10 000 000>
LC_NUMERIC=nn_NO.UTF-8
<         1>
<       100>
<    1 000>
<   10 000>
<  100 000>
<1 000 000>
<10 000 000>

May be the issue is that the thousands separator for the Norwegian 
locales is a space " ", while it is "."/"," for German/US English locales.

-- 
Best regards / Mit freundlichen Grüßen / Med vennlig hilsen

=======================================================================
 Thomas Dreibholz

 Simula Metropolitan Centre for Digital Engineering
 Centre for Resilient Networks and Applications
 Pilestredet 52
 0167 Oslo, Norway
-----------------------------------------------------------------------
 E-Mail:dreibh <at> simula.no
 Homepage:http://simula.no/people/dreibh
=======================================================================

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