diff -pruN paps-0.6.8.orig/src/paps.c paps-0.6.8/src/paps.c
--- paps-0.6.8.orig/src/paps.c	2008-09-01 15:07:03.000000000 +0900
+++ paps-0.6.8/src/paps.c	2008-09-01 15:49:10.000000000 +0900
@@ -25,6 +25,7 @@
 #include <pango/pangoft2.h>
 #include "libpaps.h"
 #include <errno.h>
+#include <langinfo.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -331,6 +332,9 @@ int main(int argc, char *argv[])
   GIConv cvh = NULL;
   GOptionGroup *options;
 
+  /* Set locale from environment. */
+  setlocale(LC_ALL, "");
+
   /* Prerequisite when using glib. */
   g_type_init();
 
@@ -480,6 +484,15 @@ int main(int argc, char *argv[])
   page_layout.scale_x = page_layout.scale_y = 1.0;
       
 
+  if (encoding == NULL)
+    {
+      encoding = g_strdup(nl_langinfo(CODESET));
+      if (!strcmp(encoding, "UTF-8"))
+        {
+          g_free(encoding);
+          encoding = NULL;
+        }
+    }
   if (encoding != NULL)
     {
       cvh = g_iconv_open ("UTF-8", encoding);