From e71a53a49d80ba3cc72e678a00f50c2b5b7ca47e Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Wed, 10 Apr 2019 19:33:12 -0400
Subject: Add braces to param exps in arith substs

---
(limited to 'src')

diff --git a/src/control.sh b/src/control.sh
index 56c70a1..8c180dd 100644
--- a/src/control.sh
+++ b/src/control.sh
@@ -43,7 +43,7 @@ parse_control()
 	got_fields="${LF}"
 
 	while IFS='' read -r line; do
-		control_line_nr=$(($control_line_nr + 1))
+		control_line_nr=$((${control_line_nr} + 1))
 		if [ "x$(echo ${line})" = 'x' ]; then
 			parse_control_error 'control_empty_line'
 		elif [ "x${line#\#}" != "x${line}" ]; then
diff --git a/src/db.sh b/src/db.sh
index 15c8685..a18b76d 100644
--- a/src/db.sh
+++ b/src/db.sh
@@ -252,7 +252,7 @@ db_inc_references()
 	dir="${dir}/${binver}_${arch}_${plat}"
 	if [ -f "${dir}/references" ]; then
 		refs="$(cat "${dir}/references")"
-		refs=$(($refs + 1))
+		refs=$((${refs} + 1))
 	else
 		refs=1
 		mkdir -p "${dir}"
@@ -276,7 +276,7 @@ db_dec_references()
 	dir="${dir}/${binver}_${arch}_${plat}"
 	if [ -f "${dir}/references" ]; then
 		refs="$(cat "${dir}/references")"
-		refs=$(($refs - 1))
+		refs=$((${refs} - 1))
 	else
 		refs=0
 	fi
diff --git a/src/garbage.sh b/src/garbage.sh
index 556f3db..4a47b4e 100644
--- a/src/garbage.sh
+++ b/src/garbage.sh
@@ -64,7 +64,7 @@ collect_garbage()
 			while [ ${dirs} -gt 0 ]; do
 				file="${file%/*}"
 				try_rmdir "${base_dir}/${file}"
-				dirs=$(($dirs - 1))
+				dirs=$((${dirs} - 1))
 			done
 		done <"${garbage}"
 		rm -f "${garbage}"
@@ -81,7 +81,7 @@ mark_pool_garbage()
 	info_v "$(get_msg 'marking_garbage_file')" "${file}"
 
 	time=$(time)
-	time=$(($time + $conf_pool_gc_delay))
+	time=$((${time} + ${conf_pool_gc_delay}))
 
 	mkdir -p "${base_dir}/.db/garbage"
 	printf '2 %s\n' "${file}" >>"${base_dir}/.db/garbage/${time}"
diff --git a/src/main.sh b/src/main.sh
index f83495c..75532d1 100644
--- a/src/main.sh
+++ b/src/main.sh
@@ -58,7 +58,7 @@ main()
 	load_locale
 
 	get_options "${@}"
-	shift $(($OPTIND - 1))
+	shift $((${OPTIND} - 1))
 
 	base_dir="${opt_b:-.}"
 
@@ -90,7 +90,7 @@ init_sigs()
 	# as in the following loop hack.
 	i=0
 	while [ ${i} -lt 127 ]; do
-		i=$(($i + 1))
+		i=$((${i} + 1))
 		sig="$(kill -l ${i} 2>/dev/null)" || continue
 		case "${sig}" in
 			'HUP' | 'INT' | 'QUIT' | 'ABRT' | 'ALRM' | 'TERM')
@@ -182,6 +182,6 @@ handle_sig()
 	if [ "x${exit_status:+set}" = 'xset' ]; then
 		exit ${exit_status}
 	else
-		exit $((128 + $sig))
+		exit $((128 + ${sig}))
 	fi
 }
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