#include "cache.h"
#include "tree.h"
-int main(int ac, char **av)
+int cmd_main(int ac, const char **av)
{
unsigned char hash1[20], hash2[20], shifted[20];
struct tree *one, *two;
+ setup_git_directory();
+
if (get_sha1(av[1], hash1))
die("cannot parse %s as an object name", av[1]);
if (get_sha1(av[2], hash2))