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+#ifndef MERGE_ORT_H
+#define MERGE_ORT_H
+
+#include "merge-recursive.h"
+
+struct commit;
+struct tree;
+
+struct merge_result {
+ /* Whether the merge is clean */
+ int clean;
+
+ /*
+ * Result of merge. If !clean, represents what would go in worktree
+ * (thus possibly including files containing conflict markers).
+ */
+ struct tree *tree;
+
+ /*
+ * Additional metadata used by merge_switch_to_result() or future calls
+ * to merge_incore_*(). Includes data needed to update the index (if
+ * !clean) and to print "CONFLICT" messages. Not for external use.
+ */
+ void *priv;
+};
+
+/*
+ * rename-detecting three-way merge with recursive ancestor consolidation.
+ * working tree and index are untouched.
+ */
+void merge_incore_recursive(struct merge_options *opt,
+ struct commit_list *merge_bases,
+ struct commit *side1,
+ struct commit *side2,
+ struct merge_result *result);
+
+/*
+ * rename-detecting three-way merge, no recursion.
+ * working tree and index are untouched.
+ */
+void merge_incore_nonrecursive(struct merge_options *opt,
+ struct tree *merge_base,
+ struct tree *side1,
+ struct tree *side2,
+ struct merge_result *result);
+
+/* Update the working tree and index from head to result after incore merge */
+void merge_switch_to_result(struct merge_options *opt,
+ struct tree *head,
+ struct merge_result *result,
+ int update_worktree_and_index,
+ int display_update_msgs);
+
+/* Do needed cleanup when not calling merge_switch_to_result() */
+void merge_finalize(struct merge_options *opt,
+ struct merge_result *result);
+
+#endif