<p></p>
<p><b>@iandees</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6448#discussion_r2443505832">app/helpers/browse_helper.rb</a>:</p>
<pre style='color:#555'>> @@ -72,6 +72,63 @@ def link_follow(object)
     "nofollow" if object.tags.empty?
   end
 
+  # Tag change highlighting methods for history view
+  def tag_changes_for_version(current_version, all_versions)
+    return {} unless current_version && all_versions
+
+    current_tags = current_version.tags || {}
+
+    # Find the previous version by sorting all versions and finding the one before current
+    sorted_versions = all_versions.sort_by(&:version)
+    current_index = sorted_versions.find_index { |v| v.version == current_version.version }
+    previous_version = current_index&.positive? ? sorted_versions[current_index - 1] : nil
+
+    # Don't compare with redacted versions unless we're showing redactions
+    previous_tags = if previous_version && (!previous_version.redacted? || params[:show_redactions])
</pre>
<p dir="auto">Yep, definitely. I tried to do this with <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/openstreetmap/openstreetmap-website/commit/3530bce8eddc6a48013c3227357ea55c4bc65e20/hovercard" href="https://github.com/openstreetmap/openstreetmap-website/commit/3530bce8eddc6a48013c3227357ea55c4bc65e20"><tt>3530bce</tt></a>.</p>

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