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-rw-r--r--lib/yahns/queue_quitter_pipe.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/yahns/queue_quitter_pipe.rb b/lib/yahns/queue_quitter_pipe.rb
index a886957..e5806e9 100644
--- a/lib/yahns/queue_quitter_pipe.rb
+++ b/lib/yahns/queue_quitter_pipe.rb
@@ -1,5 +1,6 @@
 # Copyright (C) 2013-2015 all contributors <yahns-public@yhbt.net>
 # License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+# frozen_string_literal: true
 #
 # POSIX pipe version, see queue_quitter.rb for the (preferred) eventfd one
 class Yahns::QueueQuitter # :nodoc: