V8.13.294.2025.10.28

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

lib/lib_usage.sh

@@ -12,8 +12,12 @@
 
 #######################################
 # Usage Wrapper CISS.debian.live.builder
+# Globals:
+#   None
 # Arguments:
-#   0: Script name
+#   None
+# Returns:
+#   0: on success
 #######################################
 usage() {
   # shellcheck disable=SC2155
@@ -162,5 +166,10 @@ usage() {
     echo
     echo -e "\e[1;97m${var_footer}\e[0m"
   } | less -R
+
+  return 0
 }
+### Prevents accidental 'unset -f'.
+# shellcheck disable=SC2034
+readonly -f usage
 # vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh