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-rw-r--r--actionpack/lib/abstract_controller/url_for.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actionpack/lib/abstract_controller/url_for.rb b/actionpack/lib/abstract_controller/url_for.rb
index 72d07b0927..bd74c27d3b 100644
--- a/actionpack/lib/abstract_controller/url_for.rb
+++ b/actionpack/lib/abstract_controller/url_for.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module AbstractController
# Includes +url_for+ into the host class (e.g. an abstract controller or mailer). The class
# has to provide a +RouteSet+ by implementing the <tt>_routes</tt> methods. Otherwise, an