From 0fbde94b27d9ed08c96944717bf7bfa76897276e Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 10 Sep 2021 23:25:02 +0900
Subject: [PATCH] [ruby/rdoc] Convert upper case copyright and registered marks

https://github.com/ruby/rdoc/commit/3bca7dc093
---
 lib/rdoc/text.rb            | 4 ++--
 test/rdoc/test_rdoc_text.rb | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/rdoc/text.rb b/lib/rdoc/text.rb
index 407421f453..0bc4aba428 100644
--- a/lib/rdoc/text.rb
+++ b/lib/rdoc/text.rb
@@ -218,10 +218,10 @@ module RDoc::Text
       when s.scan(/\.\.\.(\.?)/) then
         html << s[1] << encoded[:ellipsis]
         after_word = nil
-      when s.scan(/\(c\)/) then
+      when s.scan(/\(c\)/i) then
         html << encoded[:copyright]
         after_word = nil
-      when s.scan(/\(r\)/) then
+      when s.scan(/\(r\)/i) then
         html << encoded[:trademark]
         after_word = nil
       when s.scan(/---/) then
diff --git a/test/rdoc/test_rdoc_text.rb b/test/rdoc/test_rdoc_text.rb
index 590d41c3d9..a6b1597bbf 100644
--- a/test/rdoc/test_rdoc_text.rb
+++ b/test/rdoc/test_rdoc_text.rb
@@ -502,6 +502,7 @@ The comments associated with
 
   def test_to_html_copyright
     assert_equal '©', to_html('(c)')
+    assert_equal '©', to_html('(C)')
   end
 
   def test_to_html_dash
@@ -557,6 +558,7 @@ The comments associated with
 
   def test_to_html_registered_trademark
     assert_equal '®', to_html('(r)')
+    assert_equal '®', to_html('(R)')
   end
 
   def test_to_html_tt_tag