+extern int read_line_with_nul(char *buf, int size, FILE *file);
+extern int fmt_merge_msg(int merge_summary, struct strbuf *in,
+ struct strbuf *out);
+extern int commit_tree(const char *msg, unsigned char *tree,
+ struct commit_list *parents, unsigned char *ret);
+extern int check_pager_config(const char *cmd);