difftool: handle unmerged files in dir-diff mode

diff --git a/Documentation/technical/api-argv-array.txt b/Documentation/technical/api-argv-array.txt
index 8076172a08ce0dfc80e9656cd1ee7712c32c1d3e..cfc063018c996a61b333b38d7b387f40b21e7a00 100644 (file)
--- a/Documentation/technical/api-argv-array.txt
+++ b/Documentation/technical/api-argv-array.txt
@@ -56,3 +56,10 @@ Functions
 `argv_array_clear`::
        Free all memory associated with the array and return it to the
        initial, empty state.
+
+`argv_array_detach`::
+       Disconnect the `argv` member from the `argv_array` struct and
+       return it. The caller is responsible for freeing the memory used
+       by the array, and by the strings it references. After detaching,
+       the `argv_array` is in a reinitialized state and can be pushed
+       into again.