From 6f5c4a4487c647434bee9a7e049bd085789ba2a8 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Mon, 02 Jul 2018 16:07:30 -0400
Subject: is_cmd(): Replace pipeline and external commands with case

---
diff --git a/src/cmd.sh b/src/cmd.sh
index e50b870..ac84f16 100644
--- a/src/cmd.sh
+++ b/src/cmd.sh
@@ -99,7 +99,7 @@ is_cmd()
 {
 	local cmd="${1}"
 
-	[ "x$(printf '%s\n' ${cmds} | grep "^${cmd}$")" = "x${cmd}" ]
+	case "${cmds}" in *" ${cmd} "*) return 0;; *) return 1;; esac
 
 	return ${?}
 }
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