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-rw-r--r--lib/diff/lcs/string.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/diff/lcs/string.rb b/lib/diff/lcs/string.rb
index 8545bcf..9ab32e9 100644
--- a/lib/diff/lcs/string.rb
+++ b/lib/diff/lcs/string.rb
@@ -1,4 +1,4 @@
-# -*- ruby encoding: utf-8 -*-
+# frozen_string_literal: true
class String
include Diff::LCS