-extern void init_revisions(struct rev_info *revs, const char *prefix);
-extern int setup_revisions(int argc, const char **argv, struct rev_info *revs,
- struct setup_revision_opt *);
-extern void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
- const struct option *options,
- const char * const usagestr[]);
+void init_revisions(struct rev_info *revs, const char *prefix);
+int setup_revisions(int argc, const char **argv, struct rev_info *revs,
+ struct setup_revision_opt *);
+void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
+ const struct option *options,
+ const char * const usagestr[]);