-# XXX I can't get quoting right without arrays
-[ -n "$from" ] && from=(--from "$from")
-[ -n "$to" ] && to=(--to "$to") # FIXME there could be multimple To
-
-people=()
-[ -n "$from" ] && people=("${people[@]}" "${from[@]}")
-[ -n "$to" ] && people=("${people[@]}" "${to[@]}")
-
+people=
+[ -n "$from" ] && people="$people --from '$from'"
+# FIXME: there could be multimple To
+[ -n "$to" ] && people="$people --to '$to'"