fixes

sh/core/code.sh

@@ -289,10 +289,11 @@ rwx_code_main() {
 	# find user modules
 	rwx_code_modules_user="$(rwx_main_find "${rwx_code_root}")"
 	# source user modules
-	while IFS= read -r module; do
-		# shellcheck disable=SC1090
-		. "${rwx_code_root}/${module}.${RWX_MAIN_EXTENSION}"
-	done <<EOF
+	[ "${rwx_code_modules_user}" ] &&
+		while IFS= read -r module; do
+			# shellcheck disable=SC1090
+			. "${rwx_code_root}/${module}.${RWX_MAIN_EXTENSION}"
+		done <<EOF
 ${rwx_code_modules_user}
 EOF
 	# cache main modules
@@ -306,13 +307,14 @@ $(cat "${rwx_main_root}/${module}.${RWX_MAIN_EXTENSION}")
 ${modules_main}
 EOF
 	# cache user modules
-	while IFS= read -r module; do
-		# cache user module
-		rwx_code_cache_user="${rwx_code_cache_user}\
+	[ "${rwx_code_modules_user}" ] &&
+		while IFS= read -r module; do
+			# cache user module
+			rwx_code_cache_user="${rwx_code_cache_user}\
 #. ${module}
 $(cat "${rwx_code_root}/${module}.${RWX_MAIN_EXTENSION}")
 "
-	done <<EOF
+		done <<EOF
 ${rwx_code_modules_user}
 EOF
 	# load code cache

sh/main.sh

@@ -39,13 +39,14 @@ rwx_main_path="${rwx_main_root}/${rwx_main_file}"
 #| sort
 rwx_main_find() {
 	local root="${1}"
-	find \
-		"${root}" \
-		-name "*.${RWX_MAIN_EXTENSION}" \
-		-type "f" \
-		-printf "%P\n" |
-		sed "s|\\.[^.]*\$||" |
-		sort
+	[ -d "${root}" ] &&
+		find \
+			"${root}" \
+			-name "*.${RWX_MAIN_EXTENSION}" \
+			-type "f" \
+			-printf "%P\n" |
+			sed "s|\\.[^.]*\$||" |
+			sort
 }
 
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