int string_list_has_string(const struct string_list *list, const char *string);
int string_list_find_insert_index(const struct string_list *list, const char *string,
int negative_existing_index);
+/*
+ * Inserts the given string into the sorted list.
+ * If the string already exists, the list is not altered.
+ * Returns the string_list_item, the string is part of.
+ */
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);
+
+/*
+ * Checks if the given string is part of a sorted list. If it is part of the list,
+ * return the coresponding string_list_item, NULL otherwise.
+ */
struct string_list_item *string_list_lookup(struct string_list *list, const char *string);
/*