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-rw-r--r--t/detach.ru1
1 files changed, 1 insertions, 0 deletions
diff --git a/t/detach.ru b/t/detach.ru
index bbd998e..8d35951 100644
--- a/t/detach.ru
+++ b/t/detach.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentType, "text/plain"
 fifo_path = ENV["TEST_FIFO"] or abort "TEST_FIFO not set"
 run lambda { |env|