diff -Nru a2ps-4.15.6_copy/src/main.c a2ps-4.15.6/src/main.c
--- a2ps-4.15.6_copy/src/main.c	2025-02-28 17:01:52.916699393 +0800
+++ a2ps-4.15.6/src/main.c	2025-02-28 17:23:29.851947397 +0800
@@ -26,6 +26,7 @@
 
 #include <signal.h>
 #include <locale.h>
+#include <string.h>
 
 #include "a2ps.h"
 #include "argmatch.h"
@@ -917,6 +918,7 @@
 main (int argc, char *argv[])
 {
   int argn;
+  char *locale;
 
   /* Name under which this program was called. */
   program_name = base_name (argv[0]);
@@ -928,6 +930,9 @@
   setlocale (LC_CTYPE, "");
   setlocale (LC_PAPER, "");
 
+  locale = setlocale (LC_ALL, "");
+  /* fprintf(stderr, "locale : %s\n", locale); */
+
   bindtextdomain (PACKAGE, LOCALEDIR);
   bindtextdomain (PACKAGE "-gnulib", LOCALEDIR);
   textdomain (PACKAGE);
@@ -988,6 +993,10 @@
   sheets_map = sheets_map_new ();
   style_sheets = new_style_sheets ();
 
+  /* Process special case: Japanese Document */
+  if (! strncmp (locale, "ja", 2) )
+    job->requested_encoding_name = xstrdup ("euc-jp");
+
   /* Process the command line options. */
   argn = a2ps_handle_options (job, argc, argv);
   switch (behavior) {