#define DIFF_OPT_RELATIVE_NAME (1 << 17)
#define DIFF_OPT_IGNORE_SUBMODULES (1 << 18)
#define DIFF_OPT_DIRSTAT_CUMULATIVE (1 << 19)
+#define DIFF_OPT_DIRSTAT_BY_FILE (1 << 20)
#define DIFF_OPT_TST(opts, flag) ((opts)->flags & DIFF_OPT_##flag)
#define DIFF_OPT_SET(opts, flag) ((opts)->flags |= DIFF_OPT_##flag)
#define DIFF_OPT_CLR(opts, flag) ((opts)->flags &= ~DIFF_OPT_##flag)
extern void diff_tree_combined_merge(const unsigned char *sha1, int, struct rev_info *);
+void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b);
+
extern void diff_addremove(struct diff_options *,
int addremove,
unsigned mode,