-z "$var" and not -z $var it would seem

diff --git a/examples/formfiller/formfiller b/examples/formfiller/formfiller
index f0a588a..7071455 100755 (executable)
--- a/examples/formfiller/formfiller
+++ b/examples/formfiller/formfiller
@@ -14,7 +14,7 @@
 # dmenu command use in case multiple files are found for current domain
 DMENU="dmenu -l 7"
 
-if [[ -z $XDG_CONFIG_HOME ]]
+if [[ -z "$XDG_CONFIG_HOME" ]]
 then
         XDG_CONFIG_HOME=$HOME/.config
 fi