=== modified file 'zsh-functions/confz_fs_init'
--- zsh-functions/confz_fs_init	2014-06-25 09:05:17 +0000
+++ zsh-functions/confz_fs_init	2014-06-19 19:03:09 +0000
@@ -7,11 +7,11 @@
 
 # configure LVM2 logical volume
 confz_logical_volume_check() {
-	defvar vg_name ${DEFAULT_VG:-}
+	defvar vg_name $DEFAULT_VG
 	[[ -n ${vars[vg_name]} ]] || \
 		die "$0: DEFAULT_VG is unset and no 'vg_name' was passed"
 
-	defvar size ${DEFAULT_VOLUME_SIZE:-}
+	defvar size $DEFAULT_VOLUME_SIZE
 	[[ -n ${vars[size]} ]] || \
 		die "$0: DEFAULT_VOLUME_SIZE is unset and no 'size' was passed"
 
@@ -33,7 +33,7 @@
 
 # create filesystem on block device
 confz_filesystem_check() {
-	defvar filesystem ${DEFAULT_FS:-}
+	defvar filesystem $DEFAULT_FS
 	[[ -n ${vars[filesystem]} ]] || \
 		die "$0: DEFAULT_FS is unset and no 'filesystem' was passed"