=== modified file 'common.zsh'
--- common.zsh	2017-12-13 01:13:24 +0000
+++ common.zsh	2017-12-13 01:09:04 +0000
@@ -67,11 +67,7 @@
 }
 
 defvar() {
-	(($# == 2)) || die "usage: $0 <variable> <value>"
 	# set variable only if unbound
-	if ! (($+vars[$1])); then
-		fresh $1
-	fi
 	if ! ground $1; then
 		setvar $1 $2
 	fi
@@ -126,12 +122,7 @@
 				ground ${arg%!} \
 					|| die "$0: Required argument ${(qqq)${arg%!}} not defined"
 				;;
-			(*)
-				args+=( $arg )
-				if ! (($+vars[$arg])); then
-					fresh $arg
-				fi
-				;;
+			(*) args+=( $arg );;
 		esac
 	done
 	for arg in $args; do