From df10a27067056f07f246494e8d9a715d2720f1a1 Mon Sep 17 00:00:00 2001
From: Penar Musaraj <pmusaraj@gmail.com>
Date: Wed, 6 Apr 2022 16:06:45 -0400
Subject: [PATCH] FIX: Exclude automatic anchors from search index (#16396)

---
 app/services/search_indexer.rb       | 4 ++++
 spec/services/search_indexer_spec.rb | 6 ++++++
 2 files changed, 10 insertions(+)

diff --git a/app/services/search_indexer.rb b/app/services/search_indexer.rb
index 1885a4c6f47..33d18b41c9a 100644
--- a/app/services/search_indexer.rb
+++ b/app/services/search_indexer.rb
@@ -337,6 +337,10 @@ class SearchIndexer
         if node["href"] == node.text || MENTION_CLASSES.include?(node["class"])
           node.remove_attribute("href")
         end
+
+        if node["class"] == "anchor" && node["href"].starts_with?("#")
+          node.remove_attribute("href")
+        end
       end
 
       html_scrubber = new
diff --git a/spec/services/search_indexer_spec.rb b/spec/services/search_indexer_spec.rb
index 180d1d0be82..b132c88080d 100644
--- a/spec/services/search_indexer_spec.rb
+++ b/spec/services/search_indexer_spec.rb
@@ -42,6 +42,12 @@ describe SearchIndexer do
     expect(scrubbed).to eq("http://meta.discourse.org/ link")
   end
 
+  it 'ignores autogenerated link anchors' do
+    html = "<a class='anchor' href='#something-special'>something special</a>"
+    scrubbed = SearchIndexer::HtmlScrubber.scrub(html)
+    expect(scrubbed).to eq("something special")
+  end
+
   it 'extracts @username from mentions' do
     html = '<p><a class="mention" href="/u/%E7%8B%AE%E5%AD%90">@狮子</a> <a class="mention" href="/u/foo">@foo</a></p>'
     scrubbed = SearchIndexer::HtmlScrubber.scrub(html)