/* add an element to a list */
string_list_t *mutt_add_list_n(string_list_t*, const void*, size_t len);
static inline string_list_t *mutt_add_list(string_list_t *head, const char *data) {
/* add an element to a list */
string_list_t *mutt_add_list_n(string_list_t*, const void*, size_t len);
static inline string_list_t *mutt_add_list(string_list_t *head, const char *data) {