Update upstream source from tag 'upstream/6.9.7.1'

Update to upstream version '6.9.7.1'
with Debian dir c2c92e088b7e91033d7f5bee51ac7827148eaf4b

7 files changed, 454 insertions, 42 deletions

diff --git a/test/Makefile.am b/test/Makefile.am
index f12eebe..36f8dbe 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -1,14 +1,14 @@
 ## Makefile.am for Oniguruma
 lib_onig = ../src/libonig.la
 
-AM_LDFLAGS  = -L$(prefix)/lib
+AM_LDFLAGS  = -L$(libdir)
 AM_CFLAGS = -Wall -Wno-invalid-source-encoding
 AM_CPPFLAGS = -I$(top_srcdir)/src
 
 if ENABLE_POSIX_API
-TESTS = test_utf8 test_syntax testc testp testcu test_regset test_back
+TESTS = test_utf8 test_syntax test_options testc testp testcu test_regset test_back
 else
-TESTS = test_utf8 test_syntax testc testcu test_regset test_back
+TESTS = test_utf8 test_syntax test_options testc testcu test_regset test_back
 endif
 
 check_PROGRAMS = $(TESTS)
@@ -18,6 +18,8 @@ test: test_uchar $(TESTS)
 	@./test_utf8  | grep RESULT
 	@echo "[Oniguruma API, SYNTAX check]"
 	@./test_syntax  | grep RESULT
+	@echo "[Oniguruma API, Options check]"
+	@./test_options  | grep RESULT
 	@echo "[Oniguruma API, EUC-JP check]"
 	@./testc  | grep RESULT
 if ENABLE_POSIX_API
@@ -43,6 +45,9 @@ test_utf8_LDADD = $(lib_onig)
 test_syntax_SOURCES = test_syntax.c
 test_syntax_LDADD = $(lib_onig)
 
+test_options_SOURCES = test_options.c
+test_options_LDADD = $(lib_onig)
+
 testc_SOURCES = testc.c
 testc_LDADD = $(lib_onig)
 
@@ -62,6 +67,7 @@ test_back_LDADD = $(lib_onig)
 gcov:
 	make CFLAGS="--coverage" test_utf8
 	make CFLAGS="--coverage" test_syntax
+	make CFLAGS="--coverage" test_options
 	make CFLAGS="--coverage" testc
 if ENABLE_POSIX_API
 	make CFLAGS="--coverage" testp
diff --git a/test/test_back.c b/test/test_back.c
index 6bf5159..9a6e4a8 100644
--- a/test/test_back.c
+++ b/test/test_back.c
@@ -1,8 +1,7 @@
 /*
  * test_back.c
- * Copyright (c) 2020  K.Kosako
+ * Copyright (c) 2020-2021  K.Kosako
  */
-#include "config.h"
 #ifdef ONIG_ESCAPE_UCHAR_COLLISION
 #undef ONIG_ESCAPE_UCHAR_COLLISION
 #endif
@@ -141,7 +140,7 @@ static void xe(char* pattern, char* str, int error_no, int line_no)
 #define x2(p,s,f,t)    xx2(p,s,f,t, __LINE__)
 #define x3(p,s,f,t,m)  xx3(p,s,f,t,m, __LINE__)
 #define n(p,s)          xn(p,s,   __LINE__)
-#define e(p,s,e)        xe(p,s,e, __LINE__)
+#define e(p,s,en)       xe(p,s,en, __LINE__)
 
 extern int main(int argc, char* argv[])
 {
@@ -1331,10 +1330,10 @@ extern int main(int argc, char* argv[])
   x2("(?<!v|^t|^a+.*[efg])z", "uabcdfz", 6, 7);
 
   x2("((?(a)\\g<1>|b))", "aab", 2, 3);
-  x2("((?(a)\\g<1>))", "aab", 1, 2);
+  x2("((?(a)\\g<1>))", "aab", 3, 3);
   x2("(b(?(a)|\\g<1>))", "bba", 1, 3);
   e("(()(?(2)\\g<1>))", "", ONIGERR_NEVER_ENDING_RECURSION);
-  x2("(?(a)(?:b|c))", "ac", 0, 2);
+  x2("(?(a)(?:b|c))", "ac", 2, 2);
   n("^(?(a)b|c)", "ac");
   x2("(?i)a|b", "B", 0, 1);
   n("((?i)a|b.)|c", "C");
diff --git a/test/test_options.c b/test/test_options.c
new file mode 100644
index 0000000..7010f0f
--- /dev/null
+++ b/test/test_options.c
@@ -0,0 +1,224 @@
+/*
+ * test_options.c
+ * Copyright (c) 2020-2021  K.Kosako
+ */
+#ifdef ONIG_ESCAPE_UCHAR_COLLISION
+#undef ONIG_ESCAPE_UCHAR_COLLISION
+#endif
+#include <stdio.h>
+
+#include "oniguruma.h"
+
+#include <string.h>
+
+#define SLEN(s)  strlen(s)
+
+static int nsucc  = 0;
+static int nfail  = 0;
+static int nerror = 0;
+
+#ifdef __TRUSTINSOFT_ANALYZER__
+static int nall = 0;
+#endif
+
+static FILE* err_file;
+
+static OnigRegion* region;
+
+static void xx(OnigOptionType options, char* pattern, char* str,
+               int from, int to, int mem, int not, int error_no, int line_no)
+{
+#ifdef __TRUSTINSOFT_ANALYZER__
+  if (nall++ % TIS_TEST_CHOOSE_MAX != TIS_TEST_CHOOSE_CURRENT) return;
+#endif
+
+  int r;
+  regex_t* reg;
+  OnigErrorInfo einfo;
+
+  r = onig_new(&reg, (UChar* )pattern, (UChar* )(pattern + SLEN(pattern)),
+         options, ONIG_ENCODING_UTF8, ONIG_SYNTAX_DEFAULT, &einfo);
+  if (r) {
+    char s[ONIG_MAX_ERROR_MESSAGE_LEN];
+
+    if (error_no == 0) {
+      onig_error_code_to_str((UChar* )s, r, &einfo);
+      fprintf(err_file, "ERROR: %s  /%s/  #%d\n", s, pattern, line_no);
+      nerror++;
+    }
+    else {
+      if (r == error_no) {
+        fprintf(stdout, "OK(ERROR): /%s/ %d  #%d\n", pattern, r, line_no);
+        nsucc++;
+      }
+      else {
+        fprintf(stdout, "FAIL(ERROR): /%s/ '%s', %d, %d  #%d\n", pattern, str,
+                error_no, r, line_no);
+        nfail++;
+      }
+    }
+
+    return ;
+  }
+
+  r = onig_search(reg, (UChar* )str, (UChar* )(str + SLEN(str)),
+                  (UChar* )str, (UChar* )(str + SLEN(str)),
+                  region, options);
+  if (r < ONIG_MISMATCH) {
+    char s[ONIG_MAX_ERROR_MESSAGE_LEN];
+
+    if (error_no == 0) {
+      onig_error_code_to_str((UChar* )s, r);
+      fprintf(err_file, "ERROR: %s  /%s/  #%d\n", s, pattern, line_no);
+      nerror++;
+    }
+    else {
+      if (r == error_no) {
+        fprintf(stdout, "OK(ERROR): /%s/ '%s', %d  #%d\n",
+                pattern, str, r, line_no);
+        nsucc++;
+      }
+      else {
+        fprintf(stdout, "FAIL ERROR NO: /%s/ '%s', %d, %d  #%d\n",
+                pattern, str, error_no, r, line_no);
+        nfail++;
+      }
+    }
+
+    return ;
+  }
+
+  if (r == ONIG_MISMATCH) {
+    if (not) {
+      fprintf(stdout, "OK(N): /%s/ '%s'  #%d\n", pattern, str, line_no);
+      nsucc++;
+    }
+    else {
+      fprintf(stdout, "FAIL: /%s/ '%s'  #%d\n", pattern, str, line_no);
+      nfail++;
+    }
+  }
+  else {
+    if (not) {
+      fprintf(stdout, "FAIL(N): /%s/ '%s'  #%d\n", pattern, str, line_no);
+      nfail++;
+    }
+    else {
+      if (region->beg[mem] == from && region->end[mem] == to) {
+        fprintf(stdout, "OK: /%s/ '%s'  #%d\n", pattern, str, line_no);
+        nsucc++;
+      }
+      else {
+        fprintf(stdout, "FAIL: /%s/ '%s' %d-%d : %d-%d  #%d\n", pattern, str,
+                from, to, region->beg[mem], region->end[mem], line_no);
+        nfail++;
+      }
+    }
+  }
+  onig_free(reg);
+}
+
+static void xx2(OnigOptionType options, char* pattern, char* str,
+                int from, int to, int line_no)
+{
+  xx(options, pattern, str, from, to, 0, 0, 0, line_no);
+}
+
+static void xx3(OnigOptionType options, char* pattern, char* str,
+                int from, int to, int mem, int line_no)
+{
+  xx(options, pattern, str, from, to, mem, 0, 0, line_no);
+}
+
+static void xn(OnigOptionType options, char* pattern, char* str, int line_no)
+{
+  xx(options, pattern, str, 0, 0, 0, 1, 0, line_no);
+}
+
+#if 0
+static void xe(OnigOptionType options, char* pattern, char* str,
+               int error_no, int line_no)
+{
+  xx(options, pattern, str, 0, 0, 0, 0, error_no, line_no);
+}
+#endif
+
+#define x2(o,p,s,f,t)    xx2(o,p,s,f,t, __LINE__)
+#define x3(o,p,s,f,t,m)  xx3(o,p,s,f,t,m, __LINE__)
+#define n(o,p,s)          xn(o,p,s,   __LINE__)
+#define e(o,p,s,en)       xe(o,p,s,en, __LINE__)
+
+#define OIA  (ONIG_OPTION_IGNORECASE | ONIG_OPTION_IGNORECASE_IS_ASCII)
+
+extern int main(int argc, char* argv[])
+{
+  OnigEncoding use_encs[1];
+
+  use_encs[0] = ONIG_ENCODING_UTF8;
+  onig_initialize(use_encs, sizeof(use_encs)/sizeof(use_encs[0]));
+
+  err_file = stdout;
+
+  region = onig_region_new();
+
+  x2(ONIG_OPTION_IGNORECASE, "a", "A", 0, 1);
+  n(ONIG_OPTION_IGNORECASE_IS_ASCII, "a", "A");
+  /* KELVIN SIGN */
+  x2(ONIG_OPTION_IGNORECASE, "\xe2\x84\xaa", "k", 0, 1);
+  x2(ONIG_OPTION_IGNORECASE, "k", "\xe2\x84\xaa", 0, 3);
+  n(OIA, "\xe2\x84\xaa", "k");
+  n(OIA, "k", "\xe2\x84\xaa");
+  x2(OIA, "a", "a", 0, 1);
+  x2(OIA, "A", "A", 0, 1);
+  x2(OIA, "a", "A", 0, 1);
+  x2(OIA, "A", "a", 0, 1);
+  x2(OIA, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz", 0, 26);
+  x2(OIA, "abcdefghijklmnopqrstuvwxyz", "ABCDEFGHIJKLMNOPQRSTUVWXYZ", 0, 26);
+  x2(OIA, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "ABCabcdefghijklmnopqrstuvwxyz", 3, 29);
+  x2(OIA, "abcdefghijklmnopqrstuvwxyz", "abcABCDEFGHIJKLMNOPQRSTUVWXYZ", 3, 29);
+  x3(OIA, "#%(a!;)(b&)", "#%A!;B&", 5, 7, 2);
+
+  x2(ONIG_OPTION_IGNORECASE, "ss", "\xc3\x9f", 0, 2);
+  x2(ONIG_OPTION_IGNORECASE, "\xc3\x9f", "SS", 0, 2);
+  n(OIA, "ss", "\xc3\x9f");
+  n(OIA, "\xc3\x9f", "ss");
+  x2(OIA, "ss", "SS", 0, 2);
+  x2(OIA, "Ss", "sS", 0, 2);
+
+  n(ONIG_OPTION_NOTBOL, "^ab", "ab");
+  n(ONIG_OPTION_NOTBOL, "\\Aab", "ab");
+  n(ONIG_OPTION_NOTEOL, "ab$", "ab");
+  n(ONIG_OPTION_NOTEOL, "ab\\z", "ab");
+  n(ONIG_OPTION_NOTEOL, "ab\\Z", "ab");
+  n(ONIG_OPTION_NOTEOL, "ab\\Z", "ab\n");
+
+  n(ONIG_OPTION_NOT_BEGIN_STRING, "\\Aab", "ab");
+  n(ONIG_OPTION_NOT_END_STRING, "ab\\z", "ab");
+  n(ONIG_OPTION_NOT_END_STRING, "ab\\Z", "ab");
+  n(ONIG_OPTION_NOT_END_STRING, "ab\\Z", "ab\n");
+
+  x2(ONIG_OPTION_WORD_IS_ASCII, "\\w", "@g", 1, 2);
+  n(ONIG_OPTION_WORD_IS_ASCII, "\\w", "あ");
+  x2(ONIG_OPTION_NONE, "\\d", "１", 0, 3);
+  n(ONIG_OPTION_DIGIT_IS_ASCII, "\\d", "１");
+  x2(ONIG_OPTION_SPACE_IS_ASCII, "\\s", " ", 0, 1);
+  x2(ONIG_OPTION_NONE, "\\s", "　", 0, 3);
+  n(ONIG_OPTION_SPACE_IS_ASCII, "\\s", "　");
+
+  x2(ONIG_OPTION_POSIX_IS_ASCII, "\\w\\d\\s", "c3 ", 0, 3);
+  n(ONIG_OPTION_POSIX_IS_ASCII, "\\w|\\d|\\s", "あ４　");
+
+  x2(ONIG_OPTION_EXTEND, " abc  \n def", "abcdef", 0, 6);
+  x2(ONIG_OPTION_FIND_LONGEST, "\\w+", "abc defg hij", 4, 8);
+  x2(ONIG_OPTION_FIND_NOT_EMPTY, "\\w*", "@@@ abc defg hij", 4, 7);
+
+
+  fprintf(stdout,
+       "\nRESULT   SUCC: %4d,  FAIL: %d,  ERROR: %d      (by Oniguruma %s)\n",
+       nsucc, nfail, nerror, onig_version());
+
+  onig_region_free(region, 1);
+  onig_end();
+
+  return ((nfail == 0 && nerror == 0) ? 0 : -1);
+}
diff --git a/test/test_syntax.c b/test/test_syntax.c
index 06fef45..b501ccd 100644
--- a/test/test_syntax.c
+++ b/test/test_syntax.c
@@ -1,8 +1,7 @@
 /*
  * test_syntax.c
- * Copyright (c) 2019-2020  K.Kosako
+ * Copyright (c) 2019-2021  K.Kosako
  */
-#include "config.h"
 #ifdef ONIG_ESCAPE_UCHAR_COLLISION
 #undef ONIG_ESCAPE_UCHAR_COLLISION
 #endif
@@ -139,7 +138,7 @@ static void e(char* pattern, char* str, int error_no)
   xx(pattern, str, 0, 0, 0, 0, error_no);
 }
 
-static int test_fixed_interval()
+static int test_reluctant_interval()
 {
   x2("a{1,3}?", "aaa", 0, 1);
   x2("a{3}", "aaa", 0, 3);
@@ -148,6 +147,11 @@ static int test_fixed_interval()
   x2("a{3,3}?", "aaa", 0, 3);
   n("a{3,3}?", "aa");
 
+  return 0;
+}
+
+static int test_possessive_interval()
+{
   x2("a{1,3}+", "aaaaaa", 0, 3);
   x2("a{3}+", "aaaaaa", 0, 3);
   x2("a{3,3}+", "aaaaaa", 0, 3);
@@ -209,6 +213,52 @@ static int test_look_behind()
   return 0;
 }
 
+static int test_python_option_ascii()
+{
+  x2("(?a)\\w", "a", 0, 1);
+  x2("\\w", "あ", 0, 3);
+  n("(?a)\\w", "あ");
+  x2("\\s", "　", 0, 3);
+  n("(?a)\\s", "　");
+  x2("\\d", "５", 0, 3);
+  n("(?a)\\d", "５");
+  x2("あ\\b ", "あ ", 0, 4);
+  n("(?a)あ\\b ", "あ ");
+  n("あ\\B ", "あ ");
+  x2("(?a)あ\\B ", "あ ", 0, 4);
+  x2("(?a)\\W", "あ", 0, 3);
+  n("\\W", "あ");
+  x2("(?a)\\S", "　", 0, 3);
+  n("\\S", "　");
+  x2("(?a)\\D", "５", 0, 3);
+  n("\\D", "５");
+
+  return 0;
+}
+
+static int test_python_z()
+{
+  x2("a\\Z", "a", 0, 1);
+  n("a\\Z", "a\n");
+  e("\\z", "a", ONIGERR_UNDEFINED_OPERATOR);
+
+  return 0;
+}
+
+static int test_python_single_multi()
+{
+  n(".", "\n");
+  x2("(?s).", "\n", 0, 1);
+
+  n("^abc", "\nabc");
+  x2("(?m)^abc", "\nabc", 1, 4);
+  n("abc$", "abc\ndef");
+  x2("abc$", "abc\n", 0, 3);
+  x2("(?m)abc$", "abc\ndef", 0, 3);
+
+  return 0;
+}
+
 extern int main(int argc, char* argv[])
 {
   OnigEncoding use_encs[1];
@@ -222,7 +272,8 @@ extern int main(int argc, char* argv[])
 
   Syntax = ONIG_SYNTAX_PERL;
 
-  test_fixed_interval();
+  test_reluctant_interval();
+  test_possessive_interval();
   test_isolated_option();
   test_prec_read();
   test_look_behind();
@@ -235,7 +286,8 @@ extern int main(int argc, char* argv[])
 
   Syntax = ONIG_SYNTAX_JAVA;
 
-  test_fixed_interval();
+  test_reluctant_interval();
+  test_possessive_interval();
   test_isolated_option();
   test_prec_read();
   test_look_behind();
@@ -243,6 +295,21 @@ extern int main(int argc, char* argv[])
   n("(?<!ab|b)c", "bbc");
   n("(?<!b|ab)c", "bbc");
 
+  Syntax = ONIG_SYNTAX_PYTHON;
+
+  test_reluctant_interval();
+  test_python_option_ascii();
+  test_python_z();
+  test_python_single_multi();
+  x2("(?P<name>abc)", "abc", 0, 3);
+  x2("(?P<name>abc)(?P=name)", "abcabc", 0, 6);
+  x2("(?P<name>abc){0}(?P>name)", "abc", 0, 3);
+  x2("(?P<expr>[^()]+|\\((?P>expr)\\)){0}(?P>expr)", "((((xyz))))", 0, 11);
+  x2("\\u0041", "A", 0, 1);
+  x2("\\U00000041", "A", 0, 1);
+  e("\\U0041", "A", ONIGERR_INVALID_CODE_POINT_VALUE);
+
+
   fprintf(stdout,
        "\nRESULT   SUCC: %4d,  FAIL: %d,  ERROR: %d      (by Oniguruma %s)\n",
        nsucc, nfail, nerror, onig_version());
diff --git a/test/test_utf8.c b/test/test_utf8.c
index 7a4322d..9822308 100644
--- a/test/test_utf8.c
+++ b/test/test_utf8.c
@@ -1,8 +1,7 @@
 /*
  * test_utf8.c
- * Copyright (c) 2019-2020  K.Kosako
+ * Copyright (c) 2019-2021  K.Kosako
  */
-#include "config.h"
 #ifdef ONIG_ESCAPE_UCHAR_COLLISION
 #undef ONIG_ESCAPE_UCHAR_COLLISION
 #endif
@@ -27,7 +26,7 @@ static FILE* err_file;
 static OnigRegion* region;
 
 static void xx(char* pattern, char* str, int from, int to, int mem, int not,
-               int error_no)
+               int error_no, int line_no)
 {
 #ifdef __TRUSTINSOFT_ANALYZER__
   if (nall++ % TIS_TEST_CHOOSE_MAX != TIS_TEST_CHOOSE_CURRENT) return;
@@ -44,17 +43,17 @@ static void xx(char* pattern, char* str, int from, int to, int mem, int not,
 
     if (error_no == 0) {
       onig_error_code_to_str((UChar* )s, r, &einfo);
-      fprintf(err_file, "ERROR: %s  /%s/\n", s, pattern);
+      fprintf(err_file, "ERROR: %s  /%s/  #%d\n", s, pattern, line_no);
       nerror++;
     }
     else {
       if (r == error_no) {
-        fprintf(stdout, "OK(ERROR): /%s/ %d\n", pattern, r);
+        fprintf(stdout, "OK(ERROR): /%s/ %d  #%d\n", pattern, r, line_no);
         nsucc++;
       }
       else {
-        fprintf(stdout, "FAIL(ERROR): /%s/ '%s', %d, %d\n", pattern, str,
-                error_no, r);
+        fprintf(stdout, "FAIL(ERROR): /%s/ '%s', %d, %d  #%d\n", pattern, str,
+                error_no, r, line_no);
         nfail++;
       }
     }
@@ -70,17 +69,18 @@ static void xx(char* pattern, char* str, int from, int to, int mem, int not,
 
     if (error_no == 0) {
       onig_error_code_to_str((UChar* )s, r);
-      fprintf(err_file, "ERROR: %s  /%s/\n", s, pattern);
+      fprintf(err_file, "ERROR: %s  /%s/  #%d\n", s, pattern, line_no);
       nerror++;
     }
     else {
       if (r == error_no) {
-        fprintf(stdout, "OK(ERROR): /%s/ '%s', %d\n", pattern, str, r);
+        fprintf(stdout, "OK(ERROR): /%s/ '%s', %d  #%d\n",
+                pattern, str, r, line_no);
         nsucc++;
       }
       else {
-        fprintf(stdout, "FAIL ERROR NO: /%s/ '%s', %d, %d\n", pattern, str,
-                error_no, r);
+        fprintf(stdout, "FAIL ERROR NO: /%s/ '%s', %d, %d  #%d\n",
+                pattern, str, error_no, r, line_no);
         nfail++;
       }
     }
@@ -90,27 +90,27 @@ static void xx(char* pattern, char* str, int from, int to, int mem, int not,
 
   if (r == ONIG_MISMATCH) {
     if (not) {
-      fprintf(stdout, "OK(N): /%s/ '%s'\n", pattern, str);
+      fprintf(stdout, "OK(N): /%s/ '%s'  #%d\n", pattern, str, line_no);
       nsucc++;
     }
     else {
-      fprintf(stdout, "FAIL: /%s/ '%s'\n", pattern, str);
+      fprintf(stdout, "FAIL: /%s/ '%s'  #%d\n", pattern, str, line_no);
       nfail++;
     }
   }
   else {
     if (not) {
-      fprintf(stdout, "FAIL(N): /%s/ '%s'\n", pattern, str);
+      fprintf(stdout, "FAIL(N): /%s/ '%s'  #%d\n", pattern, str, line_no);
       nfail++;
     }
     else {
       if (region->beg[mem] == from && region->end[mem] == to) {
-        fprintf(stdout, "OK: /%s/ '%s'\n", pattern, str);
+        fprintf(stdout, "OK: /%s/ '%s'  #%d\n", pattern, str, line_no);
         nsucc++;
       }
       else {
-        fprintf(stdout, "FAIL: /%s/ '%s' %d-%d : %d-%d\n", pattern, str,
-                from, to, region->beg[mem], region->end[mem]);
+        fprintf(stdout, "FAIL: /%s/ '%s' %d-%d : %d-%d  #%d\n", pattern, str,
+                from, to, region->beg[mem], region->end[mem], line_no);
         nfail++;
       }
     }
@@ -118,26 +118,31 @@ static void xx(char* pattern, char* str, int from, int to, int mem, int not,
   onig_free(reg);
 }
 
-static void x2(char* pattern, char* str, int from, int to)
+static void xx2(char* pattern, char* str, int from, int to, int line_no)
 {
-  xx(pattern, str, from, to, 0, 0, 0);
+  xx(pattern, str, from, to, 0, 0, 0, line_no);
 }
 
-static void x3(char* pattern, char* str, int from, int to, int mem)
+static void xx3(char* pattern, char* str, int from, int to, int mem, int line_no)
 {
-  xx(pattern, str, from, to, mem, 0, 0);
+  xx(pattern, str, from, to, mem, 0, 0, line_no);
 }
 
-static void n(char* pattern, char* str)
+static void xn(char* pattern, char* str, int line_no)
 {
-  xx(pattern, str, 0, 0, 0, 1, 0);
+  xx(pattern, str, 0, 0, 0, 1, 0, line_no);
 }
 
-static void e(char* pattern, char* str, int error_no)
+static void xe(char* pattern, char* str, int error_no, int line_no)
 {
-  xx(pattern, str, 0, 0, 0, 0, error_no);
+  xx(pattern, str, 0, 0, 0, 0, error_no, line_no);
 }
 
+#define x2(p,s,f,t)    xx2(p,s,f,t, __LINE__)
+#define x3(p,s,f,t,m)  xx3(p,s,f,t,m, __LINE__)
+#define n(p,s)          xn(p,s,   __LINE__)
+#define e(p,s,en)       xe(p,s,en, __LINE__)
+
 extern int main(int argc, char* argv[])
 {
   OnigEncoding use_encs[1];
@@ -359,6 +364,114 @@ extern int main(int argc, char* argv[])
   x2("(.*)a\\1f", "bacbabf", 3, 7);
   x2("((.*)a\\2f)", "bacbabf", 3, 7);
   x2("(.*)a\\1f", "baczzzzzz\nbazz\nzzzzbabf", 19, 23);
+  x2("(?:x?)?", "", 0, 0);
+  x2("(?:x?)?", "x", 0, 1);
+  x2("(?:x?)?", "xx", 0, 1);
+  x2("(?:x?)*", "", 0, 0);
+  x2("(?:x?)*", "x", 0, 1);
+  x2("(?:x?)*", "xx", 0, 2);
+  x2("(?:x?)+", "", 0, 0);
+  x2("(?:x?)+", "x", 0, 1);
+  x2("(?:x?)+", "xx", 0, 2);
+  x2("(?:x?)\?\?", "", 0, 0);
+  x2("(?:x?)\?\?", "x", 0, 0);
+  x2("(?:x?)\?\?", "xx", 0, 0);
+  x2("(?:x?)*?", "", 0, 0);
+  x2("(?:x?)*?", "x", 0, 0);
+  x2("(?:x?)*?", "xx", 0, 0);
+  x2("(?:x?)+?", "", 0, 0);
+  x2("(?:x?)+?", "x", 0, 1);
+  x2("(?:x?)+?", "xx", 0, 1);
+  x2("(?:x*)?", "", 0, 0);
+  x2("(?:x*)?", "x", 0, 1);
+  x2("(?:x*)?", "xx", 0, 2);
+  x2("(?:x*)*", "", 0, 0);
+  x2("(?:x*)*", "x", 0, 1);
+  x2("(?:x*)*", "xx", 0, 2);
+  x2("(?:x*)+", "", 0, 0);
+  x2("(?:x*)+", "x", 0, 1);
+  x2("(?:x*)+", "xx", 0, 2);
+  x2("(?:x*)\?\?", "", 0, 0);
+  x2("(?:x*)\?\?", "x", 0, 0);
+  x2("(?:x*)\?\?", "xx", 0, 0);
+  x2("(?:x*)*?", "", 0, 0);
+  x2("(?:x*)*?", "x", 0, 0);
+  x2("(?:x*)*?", "xx", 0, 0);
+  x2("(?:x*)+?", "", 0, 0);
+  x2("(?:x*)+?", "x", 0, 1);
+  x2("(?:x*)+?", "xx", 0, 2);
+  x2("(?:x+)?", "", 0, 0);
+  x2("(?:x+)?", "x", 0, 1);
+  x2("(?:x+)?", "xx", 0, 2);
+  x2("(?:x+)*", "", 0, 0);
+  x2("(?:x+)*", "x", 0, 1);
+  x2("(?:x+)*", "xx", 0, 2);
+  n("(?:x+)+", "");
+  x2("(?:x+)+", "x", 0, 1);
+  x2("(?:x+)+", "xx", 0, 2);
+  x2("(?:x+)\?\?", "", 0, 0);
+  x2("(?:x+)\?\?", "x", 0, 0);
+  x2("(?:x+)\?\?", "xx", 0, 0);
+  x2("(?:x+)*?", "", 0, 0);
+  x2("(?:x+)*?", "x", 0, 0);
+  x2("(?:x+)*?", "xx", 0, 0);
+  n("(?:x+)+?", "");
+  x2("(?:x+)+?", "x", 0, 1);
+  x2("(?:x+)+?", "xx", 0, 2);
+  x2("(?:x\?\?)?", "", 0, 0);
+  x2("(?:x\?\?)?", "x", 0, 0);
+  x2("(?:x\?\?)?", "xx", 0, 0);
+  x2("(?:x\?\?)*", "", 0, 0);
+  x2("(?:x\?\?)*", "x", 0, 0);
+  x2("(?:x\?\?)*", "xx", 0, 0);
+  x2("(?:x\?\?)+", "", 0, 0);
+  x2("(?:x\?\?)+", "x", 0, 0);
+  x2("(?:x\?\?)+", "xx", 0, 0);
+  x2("(?:x\?\?)\?\?", "", 0, 0);
+  x2("(?:x\?\?)\?\?", "x", 0, 0);
+  x2("(?:x\?\?)\?\?", "xx", 0, 0);
+  x2("(?:x\?\?)*?", "", 0, 0);
+  x2("(?:x\?\?)*?", "x", 0, 0);
+  x2("(?:x\?\?)*?", "xx", 0, 0);
+  x2("(?:x\?\?)+?", "", 0, 0);
+  x2("(?:x\?\?)+?", "x", 0, 0);
+  x2("(?:x\?\?)+?", "xx", 0, 0);
+  x2("(?:x*?)?", "", 0, 0);
+  x2("(?:x*?)?", "x", 0, 0);
+  x2("(?:x*?)?", "xx", 0, 0);
+  x2("(?:x*?)*", "", 0, 0);
+  x2("(?:x*?)*", "x", 0, 0);
+  x2("(?:x*?)*", "xx", 0, 0);
+  x2("(?:x*?)+", "", 0, 0);
+  x2("(?:x*?)+", "x", 0, 0);
+  x2("(?:x*?)+", "xx", 0, 0);
+  x2("(?:x*?)\?\?", "", 0, 0);
+  x2("(?:x*?)\?\?", "x", 0, 0);
+  x2("(?:x*?)\?\?", "xx", 0, 0);
+  x2("(?:x*?)*?", "", 0, 0);
+  x2("(?:x*?)*?", "x", 0, 0);
+  x2("(?:x*?)*?", "xx", 0, 0);
+  x2("(?:x*?)+?", "", 0, 0);
+  x2("(?:x*?)+?", "x", 0, 0);
+  x2("(?:x*?)+?", "xx", 0, 0);
+  x2("(?:x+?)?", "", 0, 0);
+  x2("(?:x+?)?", "x", 0, 1);
+  x2("(?:x+?)?", "xx", 0, 1);
+  x2("(?:x+?)*", "", 0, 0);
+  x2("(?:x+?)*", "x", 0, 1);
+  x2("(?:x+?)*", "xx", 0, 2);
+  n("(?:x+?)+", "");
+  x2("(?:x+?)+", "x", 0, 1);
+  x2("(?:x+?)+", "xx", 0, 2);
+  x2("(?:x+?)\?\?", "", 0, 0);
+  x2("(?:x+?)\?\?", "x", 0, 0);
+  x2("(?:x+?)\?\?", "xx", 0, 0);
+  x2("(?:x+?)*?", "", 0, 0);
+  x2("(?:x+?)*?", "x", 0, 0);
+  x2("(?:x+?)*?", "xx", 0, 0);
+  n("(?:x+?)+?", "");
+  x2("(?:x+?)+?", "x", 0, 1);
+  x2("(?:x+?)+?", "xx", 0, 1);
   x2("a|b", "a", 0, 1);
   x2("a|b", "b", 0, 1);
   x2("|a", "a", 0, 0);
@@ -1348,9 +1461,12 @@ extern int main(int argc, char* argv[])
 
   x2("((?(a)\\g<1>|b))", "aab", 0, 3);
   x2("((?(a)\\g<1>))", "aab", 0, 2);
+  x2("((?(a)\\g<1>))", "", 0, 0);
   x2("(b(?(a)|\\g<1>))", "bba", 0, 3);
   e("(()(?(2)\\g<1>))", "", ONIGERR_NEVER_ENDING_RECURSION);
   x2("(?(a)(?:b|c))", "ac", 0, 2);
+  x2("(?(a)(?:b|c))", "", 0, 0);
+  x2("(?(a)b)", "", 0, 0);
   n("^(?(a)b|c)", "ac");
   x2("(?i)a|b", "B", 0, 1);
   n("((?i)a|b.)|c", "C");
@@ -1479,6 +1595,7 @@ extern int main(int argc, char* argv[])
   e("[\\x61-\\x{0063-0065}]+", "", ONIGERR_INVALID_CODE_POINT_VALUE);
   x2("[t\\x{0063 0071}]+", "tcqb", 0, 3);
   x2("[\\W\\x{0063 0071}]+", "*cqa", 0, 3);
+  x2("(\\O|(?=z\\g<2>*))(\\g<0>){0}", "a", 0, 1);
 
   n("a(b|)+d", "abbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcd"); /* https://www.haijin-boys.com/discussions/5079 */
   n("   \xfd", ""); /* https://bugs.php.net/bug.php?id=77370 */
@@ -1491,6 +1608,7 @@ extern int main(int argc, char* argv[])
   n("(?x)\n  (?<!\\+\\+|--)(?<=[({\\[,?=>:*]|&&|\\|\\||\\?|\\*\\/|^await|[^\\._$[:alnum:]]await|^return|[^\\._$[:alnum:]]return|^default|[^\\._$[:alnum:]]default|^yield|[^\\._$[:alnum:]]yield|^)\\s*\n  (?!<\\s*[_$[:alpha:]][_$[:alnum:]]*((\\s+extends\\s+[^=>])|,)) # look ahead is not type parameter of arrow\n  (?=(<)\\s*(?:([_$[:alpha:]][-_$[:alnum:].]*)(?<!\\.|-)(:))?((?:[a-z][a-z0-9]*|([_$[:alpha:]][-_$[:alnum:].]*))(?<!\\.|-))(?=((<\\s*)|(\\s+))(?!\\?)|\\/?>))", "    while (i < len && f(array[i]))"); /* Issue #192 */
 
   x2("aaaaaaaaaaaaaaaaaaaaaaaあb", "aaaaaaaaaaaaaaaaaaaaaaaあb", 0, 27); /* Issue #221 */
+  n("d{65538}+{61533} ", "d{65538}+{61533} ");
 
   e("x{55380}{77590}", "", ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
   e("(xyz){40000}{99999}(?<name>vv)", "", ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
diff --git a/test/testc.c b/test/testc.c
index b3a34ea..5f7c4f0 100644
--- a/test/testc.c
+++ b/test/testc.c
@@ -1,8 +1,7 @@
 /*
  * testc.c
- * Copyright (c) 2019-2020  K.Kosako
+ * Copyright (c) 2019-2021  K.Kosako
  */
-#include "config.h"
 #include <stdio.h>
 #include <string.h>
 
diff --git a/test/testp.c b/test/testp.c
index b88d0e3..3158925 100644
--- a/test/testp.c
+++ b/test/testp.c
@@ -1,8 +1,7 @@
 /*
  * testp.c
- * Copyright (c) 2020  K.Kosako
+ * Copyright (c) 2020-2021  K.Kosako
  */
-#include "config.h"
 #include <stdio.h>
 #include <string.h>