1 files changed, 11 insertions, 0 deletions
diff --git a/app/models/compare.rb b/app/models/compare.rb
index b2d46ada831..f1ed84ab5a5 100644
--- a/app/models/compare.rb
+++ b/app/models/compare.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'set'
+
 class Compare
   include Gitlab::Utils::StrongMemoize
 
@@ -77,4 +79,13 @@ class Compare
       head_sha: head_commit_sha
     )
   end
+
+  def modified_paths
+    paths = Set.new
+    diffs.diff_files.each do |diff|
+      paths.add diff.old_path
+      paths.add diff.new_path
+    end
+    paths.to_a
+  end
 end