--- /dev/null
+#ifndef LOG_TREE_H
+#define LOG_TREE_H
+
+struct log_tree_opt {
+ struct diff_options diffopt;
+ int show_root_diff;
+ int no_commit_id;
+ int verbose_header;
+ int ignore_merges;
+ int combine_merges;
+ int dense_combined_merges;
+ int always_show_header;
+ const char *header_prefix;
+ const char *header;
+ enum cmit_fmt commit_format;
+};
+
+void init_log_tree_opt(struct log_tree_opt *);
+int log_tree_diff_flush(struct log_tree_opt *);
+int log_tree_commit(struct log_tree_opt *, struct commit *);
+int log_tree_opt_parse(struct log_tree_opt *, const char **, int);
+
+#endif