diff --git a/sh/main.sh b/sh/main.sh
index 92edc7b..2c240b6 100644
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -9,18 +9,27 @@ SH_MAIN="${SH_ROOT}/${SH_MAIN_NAME}"
 
 [ -n "${ENV}" ] || export ENV="${SH_MAIN}"
 
-sh_source_check() {
-	local file=".shellcheck.sh"
-	local ifs module modules
-	modules="$(sh_source_find "." "${file}")"
-	rm --force "${file}"
-	ifs="${IFS}"
+_sh_ifs_new() {
+	SH_IFS="${IFS}"
 	IFS="
 "
+}
+
+_sh_ifs_pop() {
+	IFS="${SH_IFS}"
+	unset SH_IFS
+}
+
+sh_source_check() {
+	local file=".shellcheck.sh"
+	local module modules
+	modules="$(sh_source_find "." "${file}")"
+	rm --force "${file}"
+	_sh_ifs_new
 	for module in ${modules}; do
 		echo ". \"${module}\"" >>"${file}"
 	done
-	IFS="${ifs}"
+	_sh_ifs_pop
 	shellcheck \
 		--check-sourced \
 		"${file}"
@@ -69,9 +78,7 @@ main_source_directory() {
 	fi
 	local cmd count ifs module modules
 	modules="$(sh_source_find "${path}" "${SH_MAIN_NAME}")"
-	ifs="${IFS}"
-	IFS="
-"
+	_sh_ifs_new
 	count=0
 	_sh_main_log "" \
 		". ${path}"
@@ -88,7 +95,7 @@ main_source_directory() {
 			CMD="${CMD}${cmd}"
 		fi
 	done
-	IFS="${ifs}"
+	_sh_ifs_pop
 }
 
 main_source_file() {