longest_ancestor_length(): use string_list_split()

diff --git a/Documentation/technical/api-string-list.txt b/Documentation/technical/api-string-list.txt
index 0f8b7cee364c3b9944b2f7a521fc2ce4789651a7..94d7a2bd999ce5e8603f6d6639ba34d224c2bee5 100644 (file)
--- a/Documentation/technical/api-string-list.txt
+++ b/Documentation/technical/api-string-list.txt
@@ -1,8 +1,9 @@
 string-list API
 ===============
 
-The string_list API offers a data structure and functions to handle sorted
-and unsorted string lists.
+The string_list API offers a data structure and functions to handle
+sorted and unsorted string lists.  A "sorted" list is one whose
+entries are sorted by string value in `strcmp()` order.
 
 The 'string_list' struct used to be called 'path_list', but was renamed
 because it is not specific to paths.
@@ -44,10 +45,9 @@ member (you need this if you add things later) and you should set the
 Example:
 
 ----
-struct string_list list;
+struct string_list list = STRING_LIST_INIT_NODUP;
 int i;
 
-memset(&list, 0, sizeof(struct string_list));
 string_list_append(&list, "foo");
 string_list_append(&list, "bar");
 for (i = 0; i < list.nr; i++)
@@ -75,6 +75,14 @@ Functions
        to be deleted.  Preserve the order of the items that are
        retained.
 
+`string_list_longest_prefix`::
+
+       Return the longest string within a string_list that is a
+       prefix (in the sense of prefixcmp()) of the specified string,
+       or NULL if no such prefix exists.  This function does not
+       require the string_list to be sorted (it does a linear
+       search).
+
 `print_string_list`::
 
        Dump a string_list to stdout, useful mainly for debugging purposes. It
@@ -136,7 +144,7 @@ write `string_list_insert(...)->util = ...;`.
 
 `sort_string_list`::
 
-       Make an unsorted list sorted.
+       Sort the list's entries by string value in `strcmp()` order.
 
 `unsorted_string_list_has_string`::