From 7d7eddf98a26e3bd87fa20fa72778906bd414242 Mon Sep 17 00:00:00 2001
From: Alexandre Aubin <alex.aubin@mailoo.org>
Date: Tue, 16 Nov 2021 00:22:23 +0100
Subject: [PATCH] ! -z -> -n

---
 conf/ynh-hotspot | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/conf/ynh-hotspot b/conf/ynh-hotspot
index 18e498d..fa09592 100644
--- a/conf/ynh-hotspot
+++ b/conf/ynh-hotspot
@@ -358,13 +358,13 @@ start)
     touch /tmp/.ynh-hotspot-started
 
     # Check old state of the ipv4 NAT settings
-    if [ ! -z "${old_gateway_interface}" -a "${new_gateway_interface}" != "${old_gateway_interface}" ] && is_nat_set "${old_gateway_interface}"; then
+    if [ -n "${old_gateway_interface}" ] && [ "${new_gateway_interface}" != "${old_gateway_interface}" ] && is_nat_set "${old_gateway_interface}"; then
 
         unset_nat "${old_gateway_interface}"
     fi
 
     # Set ipv4 NAT
-    if [ ! -z "${new_gateway_interface}" ] && ! is_nat_set "${new_gateway_interface}"; then
+    if [ -n "${new_gateway_interface}" ] && ! is_nat_set "${new_gateway_interface}"; then
         echo "Set NAT"
         set_nat "${new_gateway_interface}"
     fi
@@ -442,7 +442,7 @@ stop)
     echo "[hotspot] Stopping..."
     rm -f /tmp/.ynh-hotspot-started
 
-    if [ ! -z "${old_gateway_interface}" ] && is_nat_set "${old_gateway_interface}"; then
+    if [ -n "${old_gateway_interface}" ] && is_nat_set "${old_gateway_interface}"; then
         echo "Unset NAT"
         unset_nat "${old_gateway_interface}"
     fi