From cd86032be2ec198395884f9e985401463438b096 Mon Sep 17 00:00:00 2001
From: Oliver Jowett <oliver@mutability.co.uk>
Date: Sun, 24 Jan 2016 22:11:48 +0000
Subject: [PATCH] Fix return value sense of is_port_list

Probably fixes #91
---
 debian/dump1090-mutability.config | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/debian/dump1090-mutability.config b/debian/dump1090-mutability.config
index ced85dd..e0b8e15 100644
--- a/debian/dump1090-mutability.config
+++ b/debian/dump1090-mutability.config
@@ -184,9 +184,9 @@ is_port_number() {
 
 is_port_list() {
   for port in $(echo $1 | sed 's@,@ @g'); do
-    if ! is_port_number "$port"; then return 0; fi
+    if ! is_port_number "$port"; then return 1; fi
   done
-  return 1
+  return 0
 }
 
 db_input high $NAME/auto-start || true