From 44e452fb3c8cc7a093d72fbc280be3973e627a62 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Fri, 19 Apr 2019 21:26:04 -0400
Subject: Add braces to param exps in arith substs

---
(limited to 'src/cmd')

diff --git a/src/cmd/install.sh b/src/cmd/install.sh
index 638cbd1..a6c208a 100644
--- a/src/cmd/install.sh
+++ b/src/cmd/install.sh
@@ -32,7 +32,7 @@ cmd_install_main()
 		print_cmd_usage 'install' >&2
 		return 1
 	fi
-	shift $(($OPTIND - 1))
+	shift $((${OPTIND} - 1))
 
 	if [ ${#} -lt 2 ]; then
 		print_cmd_usage 'install' >&2
diff --git a/src/cmd/installer-pc.sh b/src/cmd/installer-pc.sh
index 0c16ddf..19836c4 100644
--- a/src/cmd/installer-pc.sh
+++ b/src/cmd/installer-pc.sh
@@ -35,7 +35,7 @@ cmd_installer_pc_main()
 		print_cmd_usage 'installer-pc' >&2
 		return 1
 	fi
-	shift $(($OPTIND - 1))
+	shift $((${OPTIND} - 1))
 
 	if [ "x${cmd_installer_pc_opt_a-}" = 'x' ]; then
 		print_cmd_usage 'installer-pc' >&2
diff --git a/src/cmd/mkinitramfs.sh b/src/cmd/mkinitramfs.sh
index 41e6327..3177071 100644
--- a/src/cmd/mkinitramfs.sh
+++ b/src/cmd/mkinitramfs.sh
@@ -31,7 +31,7 @@ cmd_mkinitramfs_main()
 		print_cmd_usage 'mkinitramfs' >&2
 		return 1
 	fi
-	shift $(($OPTIND - 1))
+	shift $((${OPTIND} - 1))
 
 	if [ "x${cmd_mkinitramfs_opt_l-}" = 'x' ]; then
 		print_cmd_usage 'mkinitramfs' >&2
--
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