https://git.ruby-lang.org/ruby.git/commit/?id=127f735c1e

From 127f735c1e5e0771076caf2a74390757a42fb177 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Thu, 21 Jan 2021 21:03:55 +0900
Subject: [ruby/rdoc] Tweak log entry markdown

* add 3 levels to headings
* prefix commit log to labels to make unique IDs

https://github.com/ruby/rdoc/commit/5074c13209
---
 lib/rdoc/parser/changelog.rb            | 20 +++++++++++++++++-
 test/rdoc/test_rdoc_parser_changelog.rb | 36 ++++++++++++++++++++++++++++++++-
 2 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/lib/rdoc/parser/changelog.rb b/lib/rdoc/parser/changelog.rb
index 763ba03..eca4b56 100644
--- a/lib/rdoc/parser/changelog.rb
+++ b/lib/rdoc/parser/changelog.rb
@@ -229,11 +229,29 @@ class RDoc::Parser::ChangeLog < RDoc::Parser https://github.com/ruby/ruby/blob/trunk/lib/rdoc/parser/changelog.rb#L229
       out = []
       entries.each do |entry, (author, date, body)|
         title = RDoc::Markup::Heading.new(3, "#{date} #{author}")
+        title.extend(Aref)
+        title.aref = "label-#{entry}"
         out << title
-        out.concat RDoc::Markdown.parse(body).parts
+        out.concat parse_log_entry(body, entry)
       end
       out
     end
+
+    def parse_log_entry(content, sha)
+      RDoc::Markdown.parse(content).parts.each do |body|
+        case body
+        when RDoc::Markup::Heading
+          body.level += 3
+          label = body.aref.sub(/\Alabel-/, "label-#{sha}-")
+          body.extend(Aref)
+          body.aref = label
+        end
+      end
+    end
+
+    module Aref
+      attr_accessor :aref
+    end
   end
 end
 
diff --git a/test/rdoc/test_rdoc_parser_changelog.rb b/test/rdoc/test_rdoc_parser_changelog.rb
index 220f008..5f43811 100644
--- a/test/rdoc/test_rdoc_parser_changelog.rb
+++ b/test/rdoc/test_rdoc_parser_changelog.rb
@@ -340,6 +340,29 @@ commit\ a8dc5156e183489c5121fb1759bda5d9406d9175 https://github.com/ruby/ruby/blob/trunk/test/rdoc/test_rdoc_parser_changelog.rb#L340
   Date:   2021-01-20 01:58:26 +0900
 
     * 2021-01-20 [ci skip]
+
+commit de5f8a92d5001799bedb3b1a271a2d9b23c6c8fb
+  Author: Masataka Pocke Kuwabara <kuwabara@p...>
+  Date:   2021-01-01 14:25:08 +0900
+
+    Make args info for RubyVM::AST to available on endless method without parens
+
+    Problem
+    ===
+
+    Arguments information is missing for endless method without parens.
+    For example:
+
+    ```ruby
+    # ok
+    ```
+
+    It causes an error if a program expects `args` node exists.
+
+    Solution
+    ===
+
+    Call `new_args` on this case.
 ChangeLog
 
     parser.scan
@@ -354,7 +377,18 @@ ChangeLog https://github.com/ruby/ruby/blob/trunk/test/rdoc/test_rdoc_parser_changelog.rb#L377
       head(2, '2021-01-20'),
       blank_line,
       head(3, '2021-01-20 01:58:26 +0900 git <svn-admin@r...>'),
-      list(:BULLET, item(nil, para('2021-01-20 [ci skip]'))))
+      list(:BULLET, item(nil, para('2021-01-20 [ci skip]'))),
+      head(2, '2021-01-01'),
+      blank_line,
+      head(3, '2021-01-01 14:25:08 +0900 Masataka Pocke Kuwabara <kuwabara@p...>'),
+      para('Make args info for RubyVM::AST to available on endless method without parens'),
+      head(4, 'Problem'),
+      para("Arguments information is missing for endless method without parens.\n" +
+           "For example:"),
+      verb("# ok\n").tap {|v| v.format = :ruby},
+      para('It causes an error if a program expects <code>args</code> node exists.'),
+      head(4, 'Solution'),
+      para('Call <code>new_args</code> on this case.'))
 
     expected.file = @top_level
 
-- 
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