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-rw-r--r--guides/rails_guides/generator.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/guides/rails_guides/generator.rb b/guides/rails_guides/generator.rb
index 35f014747c..04ab89093a 100644
--- a/guides/rails_guides/generator.rb
+++ b/guides/rails_guides/generator.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
require "set"
require "fileutils"