int log_tree_opt_parse(struct rev_info *, const char **, int);
void show_log(struct rev_info *opt, const char *sep);
void show_decorations(struct commit *commit);
+void log_write_email_headers(struct rev_info *opt, const char *name,
+ const char **subject_p,
+ const char **extra_headers_p,
+ int *need_8bit_cte_p);
#endif