Peter Wullinger pointed out that curl should call setlocale() properly to

initiate the specific language operations, to make the IDN stuff work better.

src/config.h.in

@@ -95,6 +95,12 @@
 /* Define if you have the <limits.h> header file */
 #undef HAVE_LIMITS_H
 
+/* Define to 1 if you have the <locale.h> header file. */
+#undef HAVE_LOCALE_H
+
+/* Define to 1 if you have the `setlocale' function. */
+#undef HAVE_SETLOCALE
+
 /* type to use in place of socklen_t if not defined */
 #undef socklen_t
 

src/main.c

@@ -90,7 +90,7 @@
 #include <sys/utime.h>
 #endif
 
-#endif
+#endif /* HAVE_UTIME_H */
 
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
@@ -100,6 +100,10 @@
 #include <sys/poll.h>
 #endif
 
+#ifdef HAVE_LOCALE_H
+#include <locale.h> /* for setlocale() */
+#endif
+
 #define ENABLE_CURLX_PRINTF
 /* make the curlx header define all printf() functions to use the curlx_*
    versions instead */
@@ -2790,6 +2794,11 @@ operate(struct Configurable *config, int argc, char *argv[])
 
   errorbuffer[0]=0; /* prevent junk from being output */
 
+  /* setup proper locale from environment */
+#ifdef HAVE_SETLOCALE
+  setlocale(LC_ALL, "");
+#endif
+
   /* inits */
   if (main_init() != CURLE_OK) {
     helpf("error initializing curl library\n");