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/control.sh')

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
--
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