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-rw-r--r--diff-tree.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/diff-tree.c b/diff-tree.c
index 382011a2a..ed323d877 100644
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -149,8 +149,10 @@ static int diff_tree_stdin(char *line)
}
static const char diff_tree_usage[] =
-"git-diff-tree [--stdin] [-m] [-s] [-v] [--pretty] [-t] "
-"[<common diff options>] <tree-ish> <tree-ish>"
+"git-diff-tree [--stdin] [-m] [-s] [-v] [--pretty] [-t] [-r] [--root] "
+"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
+" -r diff recursively\n"
+" --root include the initial commit as diff against /dev/null\n"
COMMON_DIFF_OPTIONS_HELP;
int main(int argc, const char **argv)