https://git.ruby-lang.org/ruby.git/commit/?id=59ed372bcb

From 59ed372bcb5ddcb04f743509fb7c318645261149 Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 26 Aug 2019 14:06:52 +0000
Subject: merge revision(s) 179045acaf5de8398c321ada86a76f1afb77a796: [Backport
 #14539]

	regparse.c: Suppress duplicated range warning by mere \X

	* regparse.c (node_extended_grapheme_cluster): as Unicode 10 has
	  added Grapheme_Cluster_Break properties to some characters,
	  remove duplicated ranges for Unicode 9.

	git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65086 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@67752 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

diff --git a/enc/unicode.c b/enc/unicode.c
index 72ff5a9..c909022 100644
--- a/enc/unicode.c
+++ b/enc/unicode.c
@@ -786,7 +786,6 @@ SpecialsCopy: https://github.com/ruby/ruby/blob/trunk/enc/unicode.c#L786
   return (int )(to - to_start);
 }
 
-#if 0
 const char onigenc_unicode_version_string[] =
 #ifdef ONIG_UNICODE_VERSION_STRING
     ONIG_UNICODE_VERSION_STRING
@@ -802,4 +801,3 @@ const int onigenc_unicode_version_number[3] = { https://github.com/ruby/ruby/blob/trunk/enc/unicode.c#L801
     0
 #endif
 };
-#endif
diff --git a/regparse.c b/regparse.c
index 431aad9..c281292 100644
--- a/regparse.c
+++ b/regparse.c
@@ -35,6 +35,7 @@ https://github.com/ruby/ruby/blob/trunk/regparse.c#L35
 
 #define CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS
 
+extern const int onigenc_unicode_version_number[3];
 
 const OnigSyntaxType OnigSyntaxRuby = {
   (( SYN_GNU_REGEX_OP | ONIG_SYN_OP_QMARK_NON_GREEDY |
@@ -6063,7 +6064,7 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env) https://github.com/ruby/ruby/blob/trunk/regparse.c#L6064
     np1 = node_new_cclass();
     if (IS_NULL(np1)) goto err;
     cc = NCCLASS(np1);
-    {
+    if (onigenc_unicode_version_number[0] < 10) {
       static const OnigCodePoint ranges[] = {
 	13,
 	0x1F308, 0x1F308,
@@ -6205,7 +6206,7 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env) https://github.com/ruby/ruby/blob/trunk/regparse.c#L6206
     if (IS_NULL(np1)) goto err;
     cc = NCCLASS(np1);
     {
-      static const OnigCodePoint ranges[] = {
+      static const OnigCodePoint ranges9[] = {
 	8,
 	0x1F3C2, 0x1F3C2,
 	0x1F3C7, 0x1F3C7,
@@ -6216,6 +6217,14 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env) https://github.com/ruby/ruby/blob/trunk/regparse.c#L6217
 	0x1F574, 0x1F574,
 	0x1F6CC, 0x1F6CC,
       };
+      static const OnigCodePoint ranges10[] = {
+	3,
+	0x1F3F3, 0x1F3F3,
+	0x1F441, 0x1F441,
+	0x1F46F, 0x1F46F,
+      };
+      const OnigCodePoint *ranges =
+        (onigenc_unicode_version_number[0] < 10) ? ranges9 : ranges10;
       r = add_ctype_to_cc_by_range(cc, -1, 0, env, sb_out, ranges);
       if (r != 0) goto err;
     }
diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index 85d5b2c..a22975d 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -955,6 +955,8 @@ class TestRegexp < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_regexp.rb#L955
     assert_match /\A\X\z/, "\u{1F468 200D 1F393}"
     assert_match /\A\X\z/, "\u{1F46F 200D 2642 FE0F}"
     assert_match /\A\X\z/, "\u{1f469 200d 2764 fe0f 200d 1f469}"
+
+    assert_warning('') {/\X/ =~ "\u{a0}"}
   end
 
   def test_backward
diff --git a/version.h b/version.h
index d3c912d..eb5ba2c 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@ https://github.com/ruby/ruby/blob/trunk/version.h#L1
 #define RUBY_VERSION "2.5.6"
 #define RUBY_RELEASE_DATE "2019-08-26"
-#define RUBY_PATCHLEVEL 171
+#define RUBY_PATCHLEVEL 172
 
 #define RUBY_RELEASE_YEAR 2019
 #define RUBY_RELEASE_MONTH 8
-- 
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