Specifically strip mentions for search indexing

priv/scrubbers/search_indexing.ex

@@ -0,0 +1,24 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.HTML.Scrubber.SearchIndexing do
+  @moduledoc """
+  An HTML scrubbing policy that scrubs things for searching.
+  """
+
+  require FastSanitize.Sanitizer.Meta
+  alias FastSanitize.Sanitizer.Meta
+
+  # Explicitly remove mentions
+  def scrub({:a, attrs, children}) do
+    if(Enum.any?(attrs, fn {att, val} -> att == "class" and String.contains?(val, "mention") end),
+      do: nil,
+      # Strip the tag itself, leave only children (text, presumably)
+      else: children
+    )
+  end
+
+  Meta.strip_comments()
+  Meta.strip_everything_not_covered()
+end