};
 
 extern int non_ascii(int);
-extern enum cmit_fmt get_commit_format(const char *arg);
+struct rev_info; /* in revision.h, it circularly uses enum cmit_fmt */
+extern void get_commit_format(const char *arg, struct rev_info *);
 extern void format_commit_message(const struct commit *commit,
                                   const void *format, struct strbuf *sb);
 extern void pretty_print_commit(enum cmit_fmt fmt, const struct commit*,
                                 struct strbuf *,
                                 int abbrev, const char *subject,
                                 const char *after_subject, enum date_mode,
-                               int non_ascii_present);
+                               int need_8bit_cte);
 void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
                   const char *line, enum date_mode dmode,
                   const char *encoding);
                   const char *subject,
                   const char *after_subject,
                   const char *encoding,
-                  int plain_non_ascii);
+                  int need_8bit_cte);
 void pp_remainder(enum cmit_fmt fmt,
                  const char **msg_p,
                  struct strbuf *sb,