"[<common diff options>] <tree-ish> [<path>...]"
COMMON_DIFF_OPTIONS_HELP;
-int cmd_diff_index(int argc, const char **argv, char **envp)
+int cmd_diff_index(int argc, const char **argv, const char *prefix)
{
struct rev_info rev;
int cached = 0;
int i;
+ init_revisions(&rev, prefix);
git_config(git_default_config); /* no "diff" UI options */
- init_revisions(&rev);
rev.abbrev = 0;
argc = setup_revisions(argc, argv, &rev, NULL);