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-rw-r--r--activesupport/lib/active_support/core_ext/string/exclude.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/string/exclude.rb b/activesupport/lib/active_support/core_ext/string/exclude.rb
index 0ac684f6ee..2893a6eeed 100644
--- a/activesupport/lib/active_support/core_ext/string/exclude.rb
+++ b/activesupport/lib/active_support/core_ext/string/exclude.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
class String
# The inverse of <tt>String#include?</tt>. Returns true if the string
# does not include the other string.