=== modified file 'bin/confz'
--- old/bin/confz	2022-06-23 10:01:28 +0000
+++ new/bin/confz	2021-01-15 18:03:40 +0000
@@ -174,7 +174,7 @@
 			(:*)   ((${+vars_prev[${1#:}]})) || \
 				die "variable ${(qqq)1#:} not set, passed as :argument"
 				setvar ${1#:} "${vars_prev[${1#:}]}";;
-			(\?*=*) (($+vars_prev[${${1#\?}#*=}])) && \
+			(\?*=*) (($+vars_prev[${${1#\?}#*=})) && \
 				setvar ${${1#\?}%%=*} "$vars_prev[${${1#\?}#*=}";;
 			(\?*)  ((${+vars_prev[${1#\?}]})) && \
 				setvar ${1#\?} "${vars_prev[${1#\?}]}";;