=== modified file 'build'
--- build	2017-11-15 00:37:32 +0000
+++ build	2017-11-14 09:47:48 +0000
@@ -1,18 +1,9 @@
 #!/bin/zsh
-autoload -Uz colors; colors
-setopt no_unset warn_create_global extended_glob
 set -x
 cd $0:h || exit
 
-# helper that prints out error message and exits
-die() {
-	print -r - "$fg_bold[red]*$reset_color $@" >&2
-	exit 1
-}
-
 name=$1
 shift
-target=$(base64 -w 0 <<<${(j::)${(oq)@}} | tr /+ _-).$name \
-	|| die "Failed to generate target name"
+target=${(j::)${(oq)@}}.$name
 mkdir -p meta || exit $?
 redo-ifchange meta/$target

=== modified file 'common.zsh'
--- common.zsh	2017-11-15 00:46:28 +0000
+++ common.zsh	2017-11-15 00:12:49 +0000
@@ -20,15 +20,14 @@
 	fpath=( $FUNCDIR $fpath )
 	for f in $FUNCDIR/*(.); do
 		[[ $f:t =~ '^[-_[:alnum:]]*$' ]] || continue
-		functions[$f:t]='redo-ifchange $FUNCDIR/'$f:t' && autoload -UXz'
+		functions[$f:t]='redo-ifchange $FUNCDIR/'$f' && autoload -Uz '$f' && '$f' "$@"'
 	done
 }
 
 decode_args() {
 	typeset -gA vars
-	local arg decoded
-	decoded=$(tr <<<${BASE##*/} _- /+ | base64 -d)
-	for arg in "${(s::Q)decoded}"; do
+	local arg
+	for arg in "${(s::Q)BASE}"; do
 		if [[ "$arg" != *=* ]]; then
 			echo >&2 "Malformed argument: ${(qqq)arg}"
 			exit 1
@@ -119,15 +118,13 @@
 	else
 		run=( redo-ifchange )
 	fi
-	target=$(base64 -w 0 <<<${(j::)${(oq)new_vars}} | tr /+ _-).$name \
-		|| die "Failed to generate target name"
-	"$run[@]" meta/$target || die "Building $name failed ($new_vars)"
+	target=${(j::)${(oq)new_vars}}.$name
+	"$run[@]" meta/$target || die "Building $name failed ($target)"
 
 	if (($#lift)); then
-		[[ -f meta/$target ]] || die "Building $name produced no output ($new_vars)"
 		# lift %variables from calee to caller
 		local lift_vars arg
-		for arg in "${(s::Q)$(<meta/$target)}"; do
+		for arg in "${(s::Q)$(<meta$target)}"; do
 			if [[ "$arg" != *=* ]]; then
 				die "Malformed argument: ${(qqq)arg}"
 			fi

=== modified file 'default.download-file.do'
--- default.download-file.do	2017-11-15 00:59:59 +0000
+++ default.download-file.do	2017-11-15 00:57:22 +0000
@@ -4,11 +4,11 @@
 	redo-always
 	local scheme rest
 
-	scheme=${vars[url]%%:*}
-	rest=${${${vars[url]#*:}#/}#/}
-	vars[filename]=${DO:h:a}/downloads/$scheme/${rest:a}
+	scheme=${args[url]%%:*}
+	rest=${${${args[url]#*:}#/}#/}
+	args[filename]=${DO:h:a}/downloads/$scheme/${rest:a}
 
-	wget --timestamping --force-directories --protocol-directories -P downloads $vars[url]
+	wget --timestamping --force-directories --protocol-directories -P downloads $args[url]
 }
 . ./common.zsh
 # vim: fileencoding=utf8 ft=zsh noet sw=4 ts=4 sts=4