diff --git a/build.sh b/build.sh
index a6cfeff..fa07ff6 100755
--- a/build.sh
+++ b/build.sh
@@ -74,14 +74,14 @@ for BUILD_TARGET_LC in $(subst_tgts invariants ${BUILD_TARGETS_META:-world}); do
 				always)	  _pkg_step_cmds="pkg_${1%:*}"; ;;
 				main)	if [ -n "${BUILD_PACKAGES_RESTART}" ]; then
 						if [ -z "${ARG_RESTART_AT}" ]\
-						|| match_list "${ARG_RESTART_AT}" , "${1%:*}"; then
+						|| lmatch "${ARG_RESTART_AT}" , "${1%:*}"; then
 							_pkg_step_cmds="pkg_${PKG_NAME}_${1%:*} pkg_${1%:*}";
 						fi;
 					elif ! is_build_script_done ${PKG_NAME} ${1%:*}; then
 						_pkg_step_cmds="pkg_${PKG_NAME}_${1%:*} pkg_${1%:*}";
 					fi; ;;
 				optional)
-					if match_list "${ARG_RESTART_AT}" "," "${1%:*}"; then
+					if lmatch "${ARG_RESTART_AT}" "," "${1%:*}"; then
 						_pkg_step_cmds="pkg_${PKG_NAME}_${1%:*} pkg_${1%:*}";
 					fi; ;;
 				esac;
diff --git a/subr/build.subr b/subr/build.subr
index 1341e97..afd7607 100644
--- a/subr/build.subr
+++ b/subr/build.subr
@@ -108,6 +108,15 @@ lfilter() {
 	echo ${_lnew};
 };
 
+lmatch() {
+	local _cmp="${3}"; push_IFS "${2}"; set -- ${1}; pop_IFS;
+	while [ ${#} -gt 0 ]; do
+		if [ "${1}" = "${_cmp}" ]; then
+			return 0;
+		fi; shift;
+	done; return 1;
+};
+
 log_env_vars() {
 	local _nvar _arg _arg_len_max;
 	log_msg info "Variables for this ${1:-build}:"; shift;
@@ -148,15 +157,6 @@ log_msg() {
 	fi; [ ${_lvl} = failexit ] && exit 1 || return 0;
 };
 
-match_list() {
-	local _cmp="${3}"; push_IFS "${2}"; set -- ${1}; pop_IFS;
-	while [ ${#} -gt 0 ]; do
-		if [ "${1}" = "${_cmp}" ]; then
-			return 0;
-		fi; shift;
-	done; return 1;
-};
-
 run_cmd_unsplit() {
 	local _cmd="${1}" _cmdline _rc; shift;
 	while [ ${#} -gt 0 ]; do
diff --git a/subr/mode_check_updates.subr b/subr/mode_check_updates.subr
index 51cf707..56423a5 100644
--- a/subr/mode_check_updates.subr
+++ b/subr/mode_check_updates.subr
@@ -54,7 +54,7 @@ mode_check_pkg_updates() {
 	cu_url="$(get_var_unsafe PKG_${cu_NAME}_URL)";
 	cu_url_type="$(get_var_unsafe PKG_${cu_NAME}_URL_TYPE)";
 	. vars/check_updates.vars;
-	if match_list "${CHECK_UPDATES_SKIP}" " " "${cu_name}"; then
+	if lmatch "${CHECK_UPDATES_SKIP}" " " "${cu_name}"; then
 		log_msg vnfo "Skipping \`${cu_name}' (set in \${CHECK_UPDATES_SKIP}.)";
 		return 0;
 	elif [ "${cu_url_type}" = "git" ]; then
diff --git a/subr/pre_setup_env.subr b/subr/pre_setup_env.subr
index 0f2c944..b8e1faa 100644
--- a/subr/pre_setup_env.subr
+++ b/subr/pre_setup_env.subr
@@ -12,7 +12,7 @@ pre_setup_env() {
 		[ -e ${__} ] && . ${__};
 	done;
 	for __ in $(export | sed -e 's/^export //' -e 's/=.*$//'); do
-		if ! match_list "${CLEAR_ENV_VARS_EXCEPT}" " " "${__}"; then
+		if ! lmatch "${CLEAR_ENV_VARS_EXCEPT}" " " "${__}"; then
 			unset "${__}";
 		fi;
 	done;