diff --git a/ddg b/ddg
index d54f882..558ab4a 100755
--- a/ddg
+++ b/ddg
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+function join_by { local IFS="$1"; shift; echo "$*"; }
+
 if [ "$#" -eq 0 ] ; then
   echo "WARNING! All your communication will bypass VPN and firewall!"
   su no-fw -c 'lynx http://detectportal.firefox.com'