* g_string_append_uri_escaped:
* @string: a #GString
* @unescaped: a string
- * @reserved_chars_allowed: a string of reserved characters allowed to be used
+ * @reserved_chars_allowed: a string of reserved characters allowed to be used, or %NULL
* @allow_utf8: set %TRUE if the escaped string may include UTF8 characters
*
* Appends @unescaped to @string, escaped any characters that
* g_uri_escape_string:
* @unescaped: the unescaped input string.
* @reserved_chars_allowed: a string of reserved characters that are
- * allowed to be used.
+ * allowed to be used, or %NULL.
* @allow_utf8: %TRUE if the result can include UTF-8 characters.
*
* Escapes a string for use in a URI.