Bug#63717: marked as done (isalpha()/toupper() functions do not work for non-ASCII characters)
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From: srittau <srittau@jroger.in-berlin.de>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: isalpha()/toupper() functions do not work for non-ASCII characters
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Date: Sun, 07 May 2000 18:04:03 +0200
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Package: libc6
Version: 2.1.3-10
Severity: normal
The is*() and toupper()/tolower() functions do not work on non-ASCII
characters, even if LC_CTYPE etc. are set to the correct language used:
-----------------------------------------------------------------------
srittau@moby:~$ locale
LANG=de_DE
LC_CTYPE="de_DE"
LC_NUMERIC="de_DE"
LC_TIME="de_DE"
LC_COLLATE="de_DE"
LC_MONETARY="de_DE"
LC_MESSAGES="de_DE"
LC_ALL=
srittau@moby:~$ cat try.c
#include <ctype.h>
#include <stdio.h>
int main()
{
int c = 'ä';
printf("%c: %d\n", c, isprint(c));
return 0;
}
srittau@moby:~$ gcc try.c -o try -Wall
srittau@moby:~$ ./try
ä: 0
srittau@moby:~$
-----------------------------------------------------------------------
ä is a valid printing character, especially in the german language
(LANG=de_DE).
-- System Information
Debian Release: 2.2
Architecture: i386
Kernel: Linux moby 2.3.99-pre3 #1 Son Apr 2 11:15:37 CEST 2000 i686
Versions of packages libc6 depends on:
ii ldso 1.9.11-8 The Linux dynamic linker, library
---------------------------------------
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Date: Mon, 8 May 2000 13:52:33 -0400
From: Daniel Jacobowitz <dan@debian.org>
To: 63717-done@bugs.debian.org
Subject: [gaia@iki.fi: Bug#63717: isalpha()/toupper() functions do not work for non-ASCII characters]
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Saving Joel the work...
----- Forwarded message from Antti-Juhani Kaijanaho <gaia@iki.fi> -----
Date: Mon, 8 May 2000 10:32:46 +0300
From: Antti-Juhani Kaijanaho <gaia@iki.fi>
Subject: Bug#63717: isalpha()/toupper() functions do not work for non-ASCII characters
To: srittau <srittau@jroger.in-berlin.de>, 63717@bugs.debian.org
Reply-To: Antti-Juhani Kaijanaho <gaia@iki.fi>, 63717@bugs.debian.org
On Sun, May 07, 2000 at 06:04:03PM +0200, srittau wrote:
> The is*() and toupper()/tolower() functions do not work on non-ASCII
> characters, even if LC_CTYPE etc. are set to the correct language used:
Yes they do.
> srittau@moby:~$ locale
> LANG=de_DE
> LC_CTYPE="de_DE"
> LC_NUMERIC="de_DE"
> LC_TIME="de_DE"
> LC_COLLATE="de_DE"
> LC_MONETARY="de_DE"
> LC_MESSAGES="de_DE"
> LC_ALL=
> srittau@moby:~$ cat try.c
> #include <ctype.h>
> #include <stdio.h>
>
> int main()
> {
> int c = 'ä';
> printf("%c: %d\n", c, isprint(c));
>
> return 0;
> }
> srittau@moby:~$ gcc try.c -o try -Wall
> srittau@moby:~$ ./try
> ä: 0
> srittau@moby:~$
This is expected behaviour. In the absence of a "setlocale" call the
program's locale is C. To use the locale settings from the environment,
call setlocale(LC_ALL, ""). Observe:
$ locale
LANG=fi_FI
LC_CTYPE="fi_FI"
LC_NUMERIC="fi_FI"
LC_TIME="fi_FI"
LC_COLLATE="fi_FI"
LC_MONETARY="fi_FI"
LC_MESSAGES="fi_FI"
LC_ALL=
$ cat try-orig.c
#include <ctype.h>
#include <stdio.h>
int main()
{
int c = 'ä';
printf("%c: %d\n", c, isprint(c));
return 0;
}
$ gcc try-orig.c -o try-orig -Wall
$ ./try-orig
ä: 0
$ cat try.c
#include <ctype.h>
#include <locale.h>
#include <stdio.h>
int main()
{
int c = 'ä';
setlocale(LC_ALL, "");
printf("%c: %d\n", c, isprint(c));
return 0;
}
$ gcc try.c -o try -Wall
$ ./try
ä: 16384
$
This behaviour is (AFAIK) described in the ISO C standards, and in the
setlocale(3) manual page.
To the maintainer: you may close this bug.
--
%%% Antti-Juhani Kaijanaho % gaia@iki.fi % http://www.iki.fi/gaia/ %%%
I'm moving IRL on May 2, 2000.
New contact information on the home page
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Dan
/--------------------------------\ /--------------------------------\
| Daniel Jacobowitz |__| SCS Class of 2002 |
| Debian GNU/Linux Developer __ Carnegie Mellon University |
| dan@debian.org | | dmj+@andrew.cmu.edu |
\--------------------------------/ \--------------------------------/
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