extern int main(int argc, char* argv[])
{
  int r;
  /* ISO 8859-1 test */
  static unsigned char str[] = { 0xc7, 0xd6, 0xfe, 0xea, 0xe0, 0xe2, 0x00 };
  static unsigned char pattern[] = { 0xe7, 0xf6, 0xde, '\\', 'w', '+', 0x00 };

  r = exec(ONIG_ENCODING_CP1251, ONIG_OPTION_IGNORECASE,
	   "aBc", " AbC");

  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
	   " [a-c\337z] ", "  SS  ");
  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
	   " [\330-\341] ", "  SS  ");

  r = exec(ONIG_ENCODING_ISO_8859_2, ONIG_OPTION_IGNORECASE,
	   "\337          ", "          Ss          ");
  r = exec(ONIG_ENCODING_ISO_8859_2, ONIG_OPTION_IGNORECASE,
	   "SS          ", "          \337          ");
  r = exec(ONIG_ENCODING_ISO_8859_2, ONIG_OPTION_IGNORECASE,
	   "\\A\\S\\z", "ss");

  r = exec(ONIG_ENCODING_ISO_8859_2, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");

  r = exec(ONIG_ENCODING_ISO_8859_3, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_4, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_5, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_6, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_7, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_8, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_9, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_10, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_11, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_13, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_14, ONIG_OPTION_IGNORECASE,
	   "[ac]+", "bbbaAaCCC");
  r = exec(ONIG_ENCODING_ISO_8859_15, ONIG_OPTION_IGNORECASE,
	   (char* )pattern, (char* )str);
  r = exec(ONIG_ENCODING_ISO_8859_16, ONIG_OPTION_IGNORECASE,
	   (char* )pattern, (char* )str);

  r = exec(ONIG_ENCODING_KOI8_R, ONIG_OPTION_NONE, "a+", "bbbaaaccc");
  r = exec(ONIG_ENCODING_EUC_TW, ONIG_OPTION_NONE, "b*a+?c+", "bbbaaaccc");
  r = exec(ONIG_ENCODING_EUC_KR, ONIG_OPTION_NONE, "a+", "bbbaaaccc");
  r = exec(ONIG_ENCODING_EUC_CN, ONIG_OPTION_NONE, "c+", "bbbaaaccc");
  r = exec(ONIG_ENCODING_BIG5,   ONIG_OPTION_NONE, "a+", "bbbaaaccc");

  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
           "\337", "SS");
  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
           "SS", "\337");
  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
           "SSb\337ssc", "a\337bSS\337cd");
  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
           "[a\337]{0,2}", "aSS");
  r = exec(ONIG_ENCODING_ISO_8859_1, ONIG_OPTION_IGNORECASE,
           "is", "iss");

  r = exec_deluxe(ONIG_ENCODING_ASCII, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_NONE, "a+",
                  "\000b\000a\000a\000a\000c\000c\000\000");

  r = exec_deluxe(ONIG_ENCODING_ASCII, ONIG_ENCODING_UTF16_LE,
                  ONIG_OPTION_NONE, "a+",
                  "b\000a\000a\000a\000a\000c\000\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_LE,
                  ONIG_OPTION_NONE,
                  "\000b\000a\000a\000a\000c\000c\000\000",
                  "x\000b\000a\000a\000a\000c\000c\000\000\000");

  r = exec_deluxe(ONIG_ENCODING_ISO_8859_1, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
                  "\337", "\000S\000S\000\000");

  r = exec_deluxe(ONIG_ENCODING_ISO_8859_1, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
                  "SS", "\000\337\000\000");

  r = exec_deluxe(ONIG_ENCODING_ISO_8859_1, ONIG_ENCODING_UTF16_LE,
                  ONIG_OPTION_IGNORECASE,
                  "\337", "S\000S\000\000\000");

  r = exec_deluxe(ONIG_ENCODING_ISO_8859_1, ONIG_ENCODING_UTF32_BE,
                  ONIG_OPTION_IGNORECASE,
                  "SS", "\000\000\000\337\000\000\000\000");

  r = exec_deluxe(ONIG_ENCODING_ISO_8859_1, ONIG_ENCODING_UTF32_LE,
                  ONIG_OPTION_IGNORECASE,
                  "\337", "S\000\000\000S\000\000\000\000\000\000\000");

  r = exec(ONIG_ENCODING_UTF16_BE, ONIG_OPTION_NONE,
	   "\000[\000[\000:\000a\000l\000n\000u\000m\000:\000]\000]\000+\000\000",
           "\000#\002\120\000a\000Z\012\077\012\076\012\075\000\000");
  /* 0x0a3d == \012\075 : is not alnum */
  /* 0x0a3e == \012\076 : is alnum */

  r = exec(ONIG_ENCODING_UTF16_BE, ONIG_OPTION_NONE,
	   "\000\\\000d\000+\000\000",
           "\0003\0001\377\020\377\031\377\032\000\000");

  r = exec(ONIG_ENCODING_GB18030, ONIG_OPTION_IGNORECASE,
	   "(Aa\\d)+", "BaA5Aa0234");

  r = exec_deluxe(ONIG_ENCODING_ISO_8859_1, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_NONE,
		  "^\\P{Hiragana}\\p{^Hiragana}(\\p{Hiragana}+)$",
		  "\060\100\060\240\060\101\060\102\060\226\060\237\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\000[\000\337\000]\000\000", "\000S\000S\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\000[\000\337\000]\000\000", "\000s\000S\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\000^\000[\000\001\000-\377\375\000]\000$\000\000",
		  "\000s\000S\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\000S\000S\000\000",
		  "\000S\000T\000\337\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\000S\000T\000S\000S\000\000",
		  "\000S\000t\000s\000S\000\000");

  {
    UChar pat[]  = { 0x1f, 0xfc, 0x00, 0x00 };
    UChar str1[] = { 0x21, 0x26, 0x1f, 0xbe, 0x00, 0x00 };
    UChar str2[] = { 0x1f, 0xf3, 0x00, 0x00 };

    r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
		    ONIG_OPTION_IGNORECASE,
		    (char* )pat, (char* )str1);

    r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
		    ONIG_OPTION_IGNORECASE,
		    (char* )pat, (char* )str2);
  }

#if 0
  /* You should define USE_UNICODE_CASE_FOLD_TURKISH_AZERI in regenc.h. */

  set_case_fold(ONIGENC_CASE_FOLD_TURKISH_AZERI);

  r = exec_deluxe(ONIG_ENCODING_UTF8, ONIG_ENCODING_UTF8,
                  ONIG_OPTION_IGNORECASE,
		  "Ii", "\304\261\304\260");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\000I\000i\000\000", "\001\061\001\060\000\000");

  r = exec_deluxe(ONIG_ENCODING_UTF16_BE, ONIG_ENCODING_UTF16_BE,
                  ONIG_OPTION_IGNORECASE,
		  "\001\061\001\060\000\000", "\000I\000i\000\000");

  set_case_fold(ONIGENC_CASE_FOLD_MIN);
#endif

  return 0;
}