From 782fd488d7abc7ccb0c8072349182ea8beb902f0 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 21 Jan 2016 16:09:09 +0000
Subject: [PATCH] * regparse.c (fetch_name_with_level): allow non word
 characters   at the first character.  [Feature #11949]

* regparse.c (fetch_name): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53610 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog                |  7 +++++++
 regparse.c               | 21 ++++++++++++++-------
 test/ruby/test_regexp.rb |  7 +++++++
 3 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index b6c0c75721..d86197f6a7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Fri Jan 22 00:25:57 2016  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* regparse.c (fetch_name_with_level): allow non word characters
+	  at the first character.  [Feature #11949]
+
+	* regparse.c (fetch_name): ditto.
+
 Thu Jan 21 17:34:01 2016  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* marshal.c (r_object0): honor Marshal.load post proc
diff --git a/regparse.c b/regparse.c
index 094332f90e..d3907de7d9 100644
--- a/regparse.c
+++ b/regparse.c
@@ -2617,6 +2617,7 @@ get_name_end_code_point(OnigCodePoint start)
 }
 
 #ifdef USE_NAMED_GROUP
+#define ONIGENC_IS_CODE_NAME(enc, c) TRUE
 #ifdef USE_BACKREF_WITH_LEVEL
 /*
    \k<name+n>, \k<name-n>
@@ -2662,7 +2663,7 @@ fetch_name_with_level(OnigCodePoint start_code, UChar** src, UChar* end,
       sign = -1;
       pnum_head = p;
     }
-    else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
+    else if (!ONIGENC_IS_CODE_NAME(enc, c)) {
       r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
     }
   }
@@ -2684,7 +2685,7 @@ fetch_name_with_level(OnigCodePoint start_code, UChar** src, UChar* end,
         is_num = 0;
       }
     }
-    else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
+    else if (!ONIGENC_IS_CODE_NAME(enc, c)) {
       r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
     }
   }
@@ -2785,7 +2786,7 @@ fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
 	is_num = 0;
       }
     }
-    else if (!ONIGENC_IS_CODE_WORD(enc, c)) {
+    else if (!ONIGENC_IS_CODE_NAME(enc, c)) {
       r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
     }
   }
@@ -2795,8 +2796,11 @@ fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
       name_end = p;
       PFETCH_S(c);
       if (c == end_code || c == ')') {
-	if (is_num == 2) r = ONIGERR_INVALID_GROUP_NAME;
-	break;
+        if (is_num == 2) {
+          r = ONIGERR_INVALID_GROUP_NAME;
+          goto teardown;
+        }
+        break;
       }
 
       if (is_num != 0) {
@@ -2808,12 +2812,13 @@ fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
             r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
           else
             r = ONIGERR_INVALID_GROUP_NAME;
-          is_num = 0;
+          goto teardown;
         }
       }
       else {
-        if (!ONIGENC_IS_CODE_WORD(enc, c)) {
+        if (!ONIGENC_IS_CODE_NAME(enc, c)) {
           r = ONIGERR_INVALID_CHAR_IN_GROUP_NAME;
+          goto teardown;
         }
       }
     }
@@ -2821,6 +2826,7 @@ fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
     if (c != end_code) {
       r = ONIGERR_INVALID_GROUP_NAME;
       name_end = end;
+      goto err;
     }
 
     if (is_num != 0) {
@@ -2839,6 +2845,7 @@ fetch_name(OnigCodePoint start_code, UChar** src, UChar* end,
     return 0;
   }
   else {
+  teardown:
     while (!PEND) {
       name_end = p;
       PFETCH_S(c);
diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index 96b0bfacb1..db83ee3ee7 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -142,6 +142,8 @@ class TestRegexp < Test::Unit::TestCase
     assert_equal("a[b]c", "abc".sub(/(?<x>[bc])/, "[\\k<x>]"))
 
     assert_equal("o", "foo"[/(?<bar>o)/, "bar"])
+    assert_equal("o", "foo"[/(?<@bar>o)/, "@bar"])
+    assert_equal("o", "foo"[/(?<@bar>.)\g<@bar>\k<@bar>/, "@bar"])
 
     s = "foo"
     s[/(?<bar>o)/, "bar"] = "baz"
@@ -175,6 +177,7 @@ class TestRegexp < Test::Unit::TestCase
 
   def test_assign_named_capture
     assert_equal("a", eval('/(?<foo>.)/ =~ "a"; foo'))
+    assert_equal(nil, eval('/(?<@foo>.)/ =~ "a"; defined?(@foo)'))
     assert_equal("a", eval('foo = 1; /(?<foo>.)/ =~ "a"; foo'))
     assert_equal("a", eval('1.times {|foo| /(?<foo>.)/ =~ "a"; break foo }'))
     assert_nothing_raised { eval('/(?<Foo>.)/ =~ "a"') }
@@ -939,6 +942,10 @@ class TestRegexp < Test::Unit::TestCase
     h = {a => 42}
     assert_equal(42, h[b], '[ruby-core:24748]')
     assert_match(/#<TestRegexp::MatchData_\u{3042}:/, MatchData_A.allocate.inspect)
+
+    h = /^(?<@time>\d+): (?<body>.*)/.match("123456: hoge fuga")
+    assert_equal("123456", h["@time"])
+    assert_equal("hoge fuga", h["body"])
   end
 
   def test_regexp_poped