Issue #9992: On Mac OS X, decode command line arguments from utf-8 instead of

the locale encoding.

Misc/NEWS

@@ -10,6 +10,9 @@ What's New in Python 3.2 Beta 1?
 Core and Builtins
 -----------------
 
+- Issue #9992: On Mac OS X, decode command line arguments from utf-8 instead of
+  the locale encoding.
+
 - Issue #9992: Remove PYTHONFSENCODING environment variable.
 
 Library

Modules/python.c

@@ -41,7 +41,15 @@ main(int argc, char **argv)
     oldloc = strdup(setlocale(LC_ALL, NULL));
     setlocale(LC_ALL, "");
     for (i = 0; i < argc; i++) {
-        argv_copy2[i] = argv_copy[i] = _Py_char2wchar(argv[i]);
+#ifdef __APPLE__
+        /* Use utf-8 on Mac OS X */
+        PyObject *unicode = PyUnicode_FromString(argv[i]);
+        argv_copy[i] = PyUnicode_AsWideCharString(unicode, NULL);
+        Py_DECREF(unicode);
+#else
+        argv_copy[i] = _Py_char2wchar(argv[i]);
+#endif
+        argv_copy2[i] = argv_copy[i];
         if (!argv_copy[i])
             return 1;
     }