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ruby-changes:56934

From: nagachika <ko1@a...>
Date: Sun, 11 Aug 2019 21:18:23 +0900 (JST)
Subject: [ruby-changes:56934] nagachika: ad6ffac7d6 (ruby_2_6): merge revision(s) 8aecc90974ab1ac87056f77e2cb3406c5c041504,2f6cc15cdb3d64135b29cfd5ee376a5a03ebbee7: [Backport #15965]

https://git.ruby-lang.org/ruby.git/commit/?id=ad6ffac7d6

From ad6ffac7d6121c193b95c15bc011c9969967f554 Mon Sep 17 00:00:00 2001
From: nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 11 Aug 2019 12:17:58 +0000
Subject: merge revision(s)
 8aecc90974ab1ac87056f77e2cb3406c5c041504,2f6cc15cdb3d64135b29cfd5ee376a5a03ebbee7:
 [Backport #15965]

	Hoisted out WIDE_ENCODINGS


	Fixed String#grapheme_clusters with wide encodings

	* string.c (get_reg_grapheme_cluster): make regexp from properly
	  encoded sources fro wide-char encodings.  [Bug #15965]

	* regparse.c (node_extended_grapheme_cluster): suppress false
	  duplicated range warning for the time being.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67741 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

diff --git a/regparse.c b/regparse.c
index 5e51e39..574a07e 100644
--- a/regparse.c
+++ b/regparse.c
@@ -5961,6 +5961,10 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env) https://github.com/ruby/ruby/blob/trunk/regparse.c#L5961
         if (ONIGENC_MBC_MINLEN(env->enc) > 1) { /* UTF-16/UTF-32 */
           BBuf *inverted_buf = NULL;
 
+          /* TODO: fix false warning */
+          const int dup_not_warned = env->warnings_flag | ~ONIG_SYN_WARN_CC_DUP;
+          env->warnings_flag |= ONIG_SYN_WARN_CC_DUP;
+
           /* Start with a positive buffer and invert at the end.
            * Otherwise, adding single-character ranges work the wrong way. */
           R_ERR(add_property_to_cc(cc, "Grapheme_Cluster_Break=Control", 0, env));
@@ -5968,6 +5972,8 @@ node_extended_grapheme_cluster(Node** np, ScanEnv* env) https://github.com/ruby/ruby/blob/trunk/regparse.c#L5972
           R_ERR(add_code_range(&(cc->mbuf), env, 0x000D, 0x000D)); /* LF */
           R_ERR(not_code_range_buf(env->enc, cc->mbuf, &inverted_buf, env));
           cc->mbuf = inverted_buf; /* TODO: check what to do with buffer before inversion */
+
+          env->warnings_flag &= dup_not_warned; /* TODO: fix false warning */
         }
         else {
           R_ERR(add_property_to_cc(cc, "Grapheme_Cluster_Break=Control", 1, env));
diff --git a/string.c b/string.c
index f7e9c3d..1d1cd2f 100644
--- a/string.c
+++ b/string.c
@@ -8474,9 +8474,30 @@ get_reg_grapheme_cluster(rb_encoding *enc) https://github.com/ruby/ruby/blob/trunk/string.c#L8474
 	reg_grapheme_cluster = reg_grapheme_cluster_utf8;
     }
     if (!reg_grapheme_cluster) {
-	const OnigUChar source[] = "\\X";
+	const OnigUChar source_ascii[] = "\\X";
         OnigErrorInfo einfo;
-	int r = onig_new(&reg_grapheme_cluster, source, source + sizeof(source) - 1,
+        const OnigUChar *source = source_ascii;
+        size_t source_len = sizeof(source_ascii) - 1;
+        switch (encidx) {
+#define CHARS_16BE(x) (OnigUChar)((x)>>8), (OnigUChar)(x)
+#define CHARS_16LE(x) (OnigUChar)(x), (OnigUChar)((x)>>8)
+#define CHARS_32BE(x) CHARS_16BE((x)>>16), CHARS_16BE(x)
+#define CHARS_32LE(x) CHARS_16LE(x), CHARS_16LE((x)>>16)
+#define CASE_UTF(e) \
+          case ENCINDEX_UTF_##e: { \
+            static const OnigUChar source_UTF_##e[] = {CHARS_##e('\\'), CHARS_##e('X')}; \
+            source = source_UTF_##e; \
+            source_len = sizeof(source_UTF_##e); \
+            break; \
+          }
+            CASE_UTF(16BE); CASE_UTF(16LE); CASE_UTF(32BE); CASE_UTF(32LE);
+#undef CASE_UTF
+#undef CHARS_16BE
+#undef CHARS_16LE
+#undef CHARS_32BE
+#undef CHARS_32LE
+        }
+	int r = onig_new(&reg_grapheme_cluster, source, source + source_len,
                          ONIG_OPTION_DEFAULT, enc, OnigDefaultSyntax, &einfo);
 	if (r) {
             UChar message[ONIG_MAX_ERROR_MESSAGE_LEN];
diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 55dcfb5..aad4277 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -4,6 +4,11 @@ require 'test/unit' https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L4
 class TestString < Test::Unit::TestCase
   ENUMERATOR_WANTARRAY = RUBY_VERSION >= "3.0.0"
 
+  WIDE_ENCODINGS = [
+     Encoding::UTF_16BE, Encoding::UTF_16LE,
+     Encoding::UTF_32BE, Encoding::UTF_32LE,
+  ]
+
   def initialize(*args)
     @cls = String
     @aref_re_nth = true
@@ -667,8 +672,7 @@ CODE https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L672
     assert_raise(ArgumentError) {S("mypassword").crypt(S("\0a"))}
     assert_raise(ArgumentError) {S("mypassword").crypt(S("a\0"))}
     assert_raise(ArgumentError) {S("poison\u0000null").crypt(S("aa"))}
-    [Encoding::UTF_16BE, Encoding::UTF_16LE,
-     Encoding::UTF_32BE, Encoding::UTF_32LE].each do |enc|
+    WIDE_ENCODINGS.each do |enc|
       assert_raise(ArgumentError) {S("mypassword").crypt(S("aa".encode(enc)))}
       assert_raise(ArgumentError) {S("mypassword".encode(enc)).crypt(S("aa"))}
     end
@@ -1032,13 +1036,20 @@ CODE https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L1036
       "\u{1F468 200D 1F393}",
       "\u{1F46F 200D 2642 FE0F}",
       "\u{1f469 200d 2764 fe0f 200d 1f469}",
-    ].each do |g|
+    ].product([Encoding::UTF_8, *WIDE_ENCODINGS]) do |g, enc|
+      g = g.encode(enc)
       assert_equal [g], g.grapheme_clusters
-      assert_predicate g.dup.taint.grapheme_clusters[0], :tainted?
+      assert_predicate g.taint.grapheme_clusters[0], :tainted?
     end
 
-    assert_equal ["\u000A", "\u0324"], "\u{a 324}".grapheme_clusters
-    assert_equal ["\u000D", "\u0324"], "\u{d 324}".grapheme_clusters
+    [
+      "\u{a 324}",
+      "\u{d 324}",
+      "abc",
+    ].product([Encoding::UTF_8, *WIDE_ENCODINGS]) do |g, enc|
+      g = g.encode(enc)
+      assert_equal g.chars, g.grapheme_clusters
+    end
     assert_equal ["a", "b", "c"], "abc".b.grapheme_clusters
 
     if ENUMERATOR_WANTARRAY
@@ -1805,10 +1816,7 @@ CODE https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L1816
 
   def test_split_wchar
     bug8642 = '[ruby-core:56036] [Bug #8642]'
-    [
-     Encoding::UTF_16BE, Encoding::UTF_16LE,
-     Encoding::UTF_32BE, Encoding::UTF_32LE,
-    ].each do |enc|
+    WIDE_ENCODINGS.each do |enc|
       s = S("abc,def".encode(enc))
       assert_equal(["abc", "def"].map {|c| c.encode(enc)},
                    s.split(",".encode(enc)),
@@ -3018,8 +3026,7 @@ CODE https://github.com/ruby/ruby/blob/trunk/test/ruby/test_string.rb#L3026
 
   def test_ascii_incomat_inspect
     bug4081 = '[ruby-core:33283]'
-    [Encoding::UTF_16LE, Encoding::UTF_16BE,
-     Encoding::UTF_32LE, Encoding::UTF_32BE].each do |e|
+    WIDE_ENCODINGS.each do |e|
       assert_equal('"abc"', "abc".encode(e).inspect)
       assert_equal('"\\u3042\\u3044\\u3046"', "\u3042\u3044\u3046".encode(e).inspect)
       assert_equal('"ab\\"c"', "ab\"c".encode(e).inspect, bug4081)
diff --git a/version.h b/version.h
index f043008..7ff4100 100644
--- a/version.h
+++ b/version.h
@@ -1,10 +1,10 @@ https://github.com/ruby/ruby/blob/trunk/version.h#L1
 #define RUBY_VERSION "2.6.3"
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 91
+#define RUBY_PATCHLEVEL 92
 
 #define RUBY_RELEASE_YEAR 2019
 #define RUBY_RELEASE_MONTH 8
-#define RUBY_RELEASE_DAY 9
+#define RUBY_RELEASE_DAY 11
 
 #include "ruby/version.h"
 
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