diff -pruN paps-0.6.6.orig/src/paps.c paps-0.6.6/src/paps.c
--- paps-0.6.6.orig/src/paps.c	2007-01-23 18:56:04.000000000 +0900
+++ paps-0.6.6/src/paps.c	2007-01-23 18:59:15.000000000 +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>
@@ -324,6 +325,9 @@ int main(int argc, char *argv[])
   int max_width = 0, w;
   GIConv cvh = NULL;
 
+  /* Set locale from environment. */
+  setlocale(LC_ALL, "");
+
   /* Prerequisite when using glib. */
   g_type_init();
   
@@ -451,6 +455,15 @@ int main(int argc, char *argv[])
       g_object_unref (G_OBJECT (fontmap));
     }
 
+  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);