+ * cli_simple_process_macros() - Expand $() and ${} format env. variables
+ *
+ * @param input Input string possible containing $() / ${} vars
+ * @param output Output string with $() / ${} vars expanded
+ * @param max_size Maximum size of @output (including terminator)
+ * Return: 0 if OK, -ENOSPC if we ran out of space in @output
+ */
+int cli_simple_process_macros(const char *input, char *output, int max_size);
+
+/**