Fix up previous commit

[git.git] / diff-tree.c

diff --git a/diff-tree.c b/diff-tree.c
index b43df18..5559dd3 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -11,6 +11,7 @@ static int read_stdin = 0;
 static int line_termination = '\n';
 static int generate_patch = 0;
 static int detect_rename = 0;
+static int reverse_diff = 0;
 static int diff_score_opt = 0;
 static const char *header = NULL;
 static const char *header_prefix = "";
@@ -270,7 +271,7 @@ static int diff_tree_sha1_top(const unsigned char *old,
 {
        int ret;
 
-       diff_setup(detect_rename, diff_score_opt, 0,
+       diff_setup(detect_rename, diff_score_opt, reverse_diff,
                   (generate_patch ? -1 : line_termination),
                   0, 0);
        ret = diff_tree_sha1(old, new, base);
@@ -284,7 +285,7 @@ static int diff_root_tree(const unsigned char *new, const char *base)
        void *tree;
        unsigned long size;
 
-       diff_setup(detect_rename, diff_score_opt, 0,
+       diff_setup(detect_rename, diff_score_opt, reverse_diff,
                   (generate_patch ? -1 : line_termination),
                   0, 0);
        tree = read_object_with_reference(new, "tree", &size, 0);
@@ -429,7 +430,7 @@ static int diff_tree_stdin(char *line)
 }
 
 static char *diff_tree_usage =
-"git-diff-tree [-p] [-r] [-z] [--stdin] [-M] [-m] [-s] [-v] <tree-ish> <tree-ish>";
+"git-diff-tree [-p] [-r] [-z] [--stdin] [-M] [-R] [-m] [-s] [-v] <tree-ish> <tree-ish>";
 
 int main(int argc, char **argv)
 {
@@ -464,6 +465,10 @@ int main(int argc, char **argv)
                        recursive = 1;
                        continue;
                }
+               if (!strcmp(arg, "-R")) {
+                       reverse_diff = 1;
+                       continue;
+               }
                if (!strcmp(arg, "-p")) {
                        recursive = generate_patch = 1;
                        continue;