From 752fc2f1dc5c45a703ed5c822777e2bd1b4064a0 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Mon, 18 Mar 2019 13:08:19 -0400
Subject: ob-gencontrol: Track md5sum additions with var, not head cmd

---
diff --git a/src/ob-gencontrol.sh b/src/ob-gencontrol.sh
index c25fb89..79ea56c 100644
--- a/src/ob-gencontrol.sh
+++ b/src/ob-gencontrol.sh
@@ -169,20 +169,23 @@ gen_md5sums()
 {
 	local binary="${1}"
 	shift 1
+	local has_data=
 	local sum=
 	local file=
 
+	has_data=false
 	exec 3>"${binary}.control/md5sums"
 	while read -r sum file; do
 		case "${file}" in '-') continue;; esac
 		file="${file#${binary}.data}"
 		printf '%s  %s\n' "${sum}" "${file}" >&3
+		has_data=true
 	done <<-EOF
 		$(find "${binary}.data" -type f | sort | xargs md5sum)
 		EOF
 	exec 3>&-
 
-	if [ -z "$(head -n 1 "${binary}.control/md5sums")" ]; then
+	if ! ${has_data}; then
 		rm -f -- "${binary}.control/md5sums"
 	else
 		chmod 644 "${binary}.control/md5sums"
--
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