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I have the following gettext .po file, which has been translated from a .pot file. I am working on a Linux system (openSUSE if it matters), running gettext 0.17.

# 
# <[email protected]>, 2011
# transer <[email protected]>, 2011
msgid ""
msgstr ""
"Project-Id-Version: transtest\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2011年05月24日 22:47+0100\n"
"PO-Revision-Date: 2011年05月30日 23:03+0100\n"
"Last-Translator: \n"
"Language-Team: German (Germany)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: de_DE\n"
"Plural-Forms: nplurals=2; plural=(n != 1)\n"
#: transtest.cpp:12
msgid "Min Size"
msgstr "Min Größe"

Now, when I create the .mo file via

msgfmt -c transtest_de_DE.po -o transtest.mo

I then check the encoding with the "file" command,

file --mime transtest_de_DE.po
transtest_de_DE.po: text/x-po; charset=utf-8

and then install it to my locale folder and run the program after exporting LANG and LC_CTYPE, I end up with garbage where the two non-ASCII chars are.

If I set my terminal encoding to ISO-8859-2, rather than UTF-8, then I see the two characters correctly.

Looking inside the generated .mo file with a text editor the file appears to be in UTF-8 as well (I can see the symbols if I set my editor encoding to UTF-8).

The program is very simple, and it looks like so:

#include <iostream>
#include <locale>
const char *PROGRAM_NAME="transtest";
using namespace std;
int main()
{
 setlocale (LC_ALL, "");
 bindtextdomain( PROGRAM_NAME, "/usr/share/locale" );
 textdomain( PROGRAM_NAME );
 cerr << gettext("Min Size") << endl;
}

I am installing the .mo file to /usr/share/locale/de_DE/LC_MESSAGES/transstest.mo, and I have exported LC_CTYPE and LANG as "de_DE".

$ echo $LC_CTYPE; echo $LANG
de_DE
de_DE

Where am I going wrong? Why is gettext giving me the wrong encoding (ISO-8859-2) for my strings, rather than the requested (in the .po file) UTF-8?

###Edit:

The solution was in Stack Overflow question Can't make (UTF-8) traditional Chinese character to work in PHP gettext extension (.po and .mo files created in poEdit) and it appears that I needed to explicitly call

bind_textdomain_codeset(PROGRAM_NAME, "utf-8");

The final program looks like so:

#include <iostream>
#include <locale>
const char *PROGRAM_NAME="transtest";
using namespace std;
int main()
{
 setlocale (LC_ALL, "");
 bindtextdomain( PROGRAM_NAME, "/usr/share/locale" );
 bind_textdomain_codeset(PROGRAM_NAME, "utf-8");
 textdomain( PROGRAM_NAME );
 cerr << gettext("Min Size") << endl;
}

No changes to any of my gettext files were needed.