full_index:1,
                 silent_on_remove:1,
                 find_copies_harder:1,
+                follow_renames:1,
                 color_diff:1,
                 color_diff_words:1,
                 has_changes:1,
                 quiet:1,
+                no_index:1,
+                allow_external:1,
                 exit_with_status:1;
        int context;
        int break_opt;
        int detect_rename;
+       int skip_stat_unmatch;
        int line_termination;
        int output_format;
        int pickaxe_opts;
                         unsigned mode,
                         const unsigned char *sha1);
 
-extern int diff_scoreopt_parse(const char *opt);
-
 #define DIFF_SETUP_REVERSE             1
 #define DIFF_SETUP_USE_CACHE           2
 #define DIFF_SETUP_USE_SIZE_CACHE      4