=== modified file 'bin/confz'
--- bin/confz	2014-06-25 09:00:52 +0000
+++ bin/confz	2014-06-24 21:39:56 +0000
@@ -49,7 +49,7 @@
 
 # set $vars parameter if it's empty (ie. set default value)
 defvar() {
-	! (($+vars[$1])) && [[ -z $vars[$1] ]] && setvar $1 $2
+	[[ -z $vars[$1] ]] && setvar $1 $2
 }
 
 # check if variables are nonempty