From 291e2b7e8bd9a2c7de5e0413a115dd7907a02941 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 2 May 2023 13:10:43 +0900
Subject: [PATCH] Fix references to nested label in table_of_contents

Fixes #1000
---
 .../template/darkfish/table_of_contents.rhtml        |  2 +-
 test/rdoc/test_rdoc_generator_darkfish.rb            | 12 +++++++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml b/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
index 941ff9d630..09b5379fc0 100644
--- a/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
+++ b/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
@@ -36,7 +36,7 @@
    unless table.empty? then %>
     <ul>
 <%- table.each do |item| -%>
-      <li><a href="<%= klass.path %>#<%= item.aref %>"><%= item.plain_html %></a>
+      <li><a href="<%= klass.path %>#<%= item.label(klass) %>"><%= item.plain_html %></a>
 <%-   end -%>
     </ul>
 <%- end -%>
diff --git a/test/rdoc/test_rdoc_generator_darkfish.rb b/test/rdoc/test_rdoc_generator_darkfish.rb
index bb6be28201..96319bb4f7 100644
--- a/test/rdoc/test_rdoc_generator_darkfish.rb
+++ b/test/rdoc/test_rdoc_generator_darkfish.rb
@@ -113,7 +113,9 @@ def test_generate
     refute_match(/Ignored/, File.binread('index.html'))
     summary = File.binread('index.html')[%r[<summary.*Klass\.html.*</summary>.*</details>]m]
     assert_match(%r[Klass/Inner\.html".*>Inner<], summary)
-    klassnav = File.binread('Klass.html')[%r[<div class="nav-section">.*<div id="class-metadata">]m]
+
+    klass = File.binread('Klass.html')
+    klassnav = klass[%r[<div class="nav-section">.*<div id="class-metadata">]m]
     assert_match(
       %r[<li>\s*<details open>\s*<summary>\s*<a href=\S+>Heading 1</a>\s*</summary>\s*<ul]m,
       klassnav
@@ -122,6 +124,14 @@ def test_generate
       %r[<li>\s*<a href=\S+>Heading 1.1.1.1</a>\s*</ul>\s*</details>\s*</li>]m,
       klassnav
     )
+
+    assert_match(/<h1 id="class-Klass-label-Heading\+1">Heading 1(?!\.)/,
+                 klass[%r[<section class=\"description\">.*</section>]m])
+    toc = File.binread('table_of_contents.html')
+    assert_match(
+      %r[<a\s+href="Klass\.html#class-Klass-label-Heading\+1">Heading 1</a>]m,
+      toc[%r[<h2\s+id=\"classes\">.*(?=<h2\b)]m][%r[<a\s+href="Klass\.html".*(?=</li\b)]m]
+    )
   end
 
   def test_generate_page