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-rw-r--r--actionpack/lib/action_controller/metal/rescue.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/metal/rescue.rb b/actionpack/lib/action_controller/metal/rescue.rb
index 25757938f5..843c99f57b 100644
--- a/actionpack/lib/action_controller/metal/rescue.rb
+++ b/actionpack/lib/action_controller/metal/rescue.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module ActionController #:nodoc:
# This module is responsible for providing `rescue_from` helpers
# to controllers and configuring when detailed exceptions must be