From 46fbc8bacfff66fdd5d6a7bade6ebb816e0dd792 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Thu, 25 Apr 2019 21:00:06 -0400
Subject: mutex_unlock(), mutex_is_unlockable(): Delimit cmd operands

---
diff --git a/src/mutex.sh b/src/mutex.sh
index be63d96..32a2469 100644
--- a/src/mutex.sh
+++ b/src/mutex.sh
@@ -44,13 +44,13 @@ mutex_unlock()
 {
 	local mutex="${1}"
 
-	rm -f "${mutex}"
+	rm -f -- "${mutex}"
 }
 
 mutex_is_unlockable()
 {
 	local mutex="${1}"
 
-	[ "x$(cat "${mutex}" 2>/dev/null)" = "x${$}" ] || return ${?}
+	[ "x$(cat -- "${mutex}" 2>/dev/null)" = "x${$}" ] || return ${?}
 	return 0
 }
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