struct string_list_item *string_list_insert(struct string_list *list, const char *string);
struct string_list_item *string_list_insert_at_index(struct string_list *list,
int insert_at, const char *string);
-struct string_list_item *string_list_lookup(const char *string, struct string_list *list);
+struct string_list_item *string_list_lookup(struct string_list *list, const char *string);
/* Use these functions only on unsorted lists: */
-struct string_list_item *string_list_append(const char *string, struct string_list *list);
+struct string_list_item *string_list_append(struct string_list *list, const char *string);
void sort_string_list(struct string_list *list);
int unsorted_string_list_has_string(struct string_list *list, const char *string);
struct string_list_item *unsorted_string_list_lookup(struct string_list *list,