extern const char *diff_unique_abbrev(const unsigned char *, int);
extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
+extern int setup_diff_no_index(struct rev_info *revs,
+ int argc, const char ** argv, int nongit, const char *prefix);
extern int run_diff_files_cmd(struct rev_info *revs, int argc, const char **argv);
extern int run_diff_index(struct rev_info *revs, int cached);