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-rw-r--r--guides/rails_guides.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/guides/rails_guides.rb b/guides/rails_guides.rb
index 0f611c8f2b..52e66d5324 100644
--- a/guides/rails_guides.rb
+++ b/guides/rails_guides.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
$:.unshift __dir__
as_lib = File.expand_path("../activesupport/lib", __dir__)