=== modified file 'bin/confz'
--- bin/confz	2014-06-25 09:03:07 +0000
+++ bin/confz	2014-06-25 09:00:52 +0000
@@ -49,9 +49,7 @@
 
 # set $vars parameter if it's empty (ie. set default value)
 defvar() {
-	if ! (($+vars[$1])) || [[ -z $vars[$1] ]]; then
-		setvar $1 $2
-	fi
+	! (($+vars[$1])) && [[ -z $vars[$1] ]] && setvar $1 $2
 }
 
 # check if variables are nonempty