[PATCH] show changed tree objects with recursive git-diff-tree

[Nicolas Pitre <nico@cam.org>]

When -p is not used, git-diff-tree currently shows changed tree objects
but only when not recursive.  This patch makes the recursive output
show tree objects as well.

This has the immediate benefit of making git-deltafy-script handle
deltafication of tree objects.

Signed-off-by: Nicolas Pitre <nico@cam.org>

diff --git a/diff-tree.c b/diff-tree.c
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -131,7 +131,10 @@ static int compare_tree_entry(void *tree
 
 	if (recursive && S_ISDIR(mode1)) {
 		int retval;
-		char *newbase = malloc_base(base, path1, pathlen1);
+		char *newbase;
+		if (!silent && !generate_patch)
+			diff_change(mode1, mode2, sha1, sha2, base, path1);
+		newbase = malloc_base(base, path1, pathlen1);
 		retval = diff_tree_sha1(sha1, sha2, newbase);
 		free(newbase);
 		return retval;
diff --git a/git-deltafy-script b/git-deltafy-script
--- a/git-deltafy-script
+++ b/git-deltafy-script
@@ -9,8 +9,6 @@
 # NOTE: the "best earlier version" is not implemented in mkdelta yet
 #       and therefore only the next eariler version is used at this time.
 #
-# TODO: deltafy tree objects as well.
-#
 # The -d argument allows to provide a limit on the delta chain depth.
 # If 0 is passed then everything is undeltafied.