1 files changed, 114 insertions, 100 deletions

diff --git a/merge-recursive.c b/merge-recursive.c
index 59ba4b4a1a..6c40c61c47 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -146,7 +146,8 @@ static int err(struct merge_options *o, const char *err, ...)
 	return -1;
 }
 
-static struct tree *shift_tree_object(struct tree *one, struct tree *two,
+static struct tree *shift_tree_object(struct repository *repo,
+				      struct tree *one, struct tree *two,
 				      const char *subtree_shift)
 {
 	struct object_id shifted;
@@ -159,12 +160,14 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two,
 	}
 	if (oideq(&two->object.oid, &shifted))
 		return two;
-	return lookup_tree(the_repository, &shifted);
+	return lookup_tree(repo, &shifted);
 }
 
-static struct commit *make_virtual_commit(struct tree *tree, const char *comment)
+static struct commit *make_virtual_commit(struct repository *repo,
+					  struct tree *tree,
+					  const char *comment)
 {
-	struct commit *commit = alloc_commit_node(the_repository);
+	struct commit *commit = alloc_commit_node(repo);
 
 	set_merge_remote_desc(commit, comment, (struct object *)commit);
 	commit->maybe_tree = tree;
@@ -343,22 +346,24 @@ static int add_cacheinfo(struct merge_options *o,
 			 unsigned int mode, const struct object_id *oid,
 			 const char *path, int stage, int refresh, int options)
 {
+	struct index_state *istate = o->repo->index;
 	struct cache_entry *ce;
 	int ret;
 
-	ce = make_cache_entry(&the_index, mode, oid ? oid : &null_oid, path, stage, 0);
+	ce = make_cache_entry(istate, mode, oid ? oid : &null_oid, path, stage, 0);
 	if (!ce)
 		return err(o, _("add_cacheinfo failed for path '%s'; merge aborting."), path);
 
-	ret = add_cache_entry(ce, options);
+	ret = add_index_entry(istate, ce, options);
 	if (refresh) {
 		struct cache_entry *nce;
 
-		nce = refresh_cache_entry(&the_index, ce, CE_MATCH_REFRESH | CE_MATCH_IGNORE_MISSING);
+		nce = refresh_cache_entry(istate, ce,
+					  CE_MATCH_REFRESH | CE_MATCH_IGNORE_MISSING);
 		if (!nce)
 			return err(o, _("add_cacheinfo failed to refresh for path '%s'; merge aborting."), path);
 		if (nce != ce)
-			ret = add_cache_entry(nce, options);
+			ret = add_index_entry(istate, nce, options);
 	}
 	return ret;
 }
@@ -386,7 +391,7 @@ static int unpack_trees_start(struct merge_options *o,
 	o->unpack_opts.merge = 1;
 	o->unpack_opts.head_idx = 2;
 	o->unpack_opts.fn = threeway_merge;
-	o->unpack_opts.src_index = &the_index;
+	o->unpack_opts.src_index = o->repo->index;
 	o->unpack_opts.dst_index = &tmp_index;
 	o->unpack_opts.aggressive = !merge_detect_rename(o);
 	setup_unpack_trees_porcelain(&o->unpack_opts, "merge");
@@ -396,16 +401,16 @@ static int unpack_trees_start(struct merge_options *o,
 	init_tree_desc_from_tree(t+2, merge);
 
 	rc = unpack_trees(3, t, &o->unpack_opts);
-	cache_tree_free(&active_cache_tree);
+	cache_tree_free(&o->repo->index->cache_tree);
 
 	/*
-	 * Update the_index to match the new results, AFTER saving a copy
+	 * Update o->repo->index to match the new results, AFTER saving a copy
 	 * in o->orig_index.  Update src_index to point to the saved copy.
 	 * (verify_uptodate() checks src_index, and the original index is
 	 * the one that had the necessary modification timestamps.)
 	 */
-	o->orig_index = the_index;
-	the_index = tmp_index;
+	o->orig_index = *o->repo->index;
+	*o->repo->index = tmp_index;
 	o->unpack_opts.src_index = &o->orig_index;
 
 	return rc;
@@ -420,12 +425,13 @@ static void unpack_trees_finish(struct merge_options *o)
 struct tree *write_tree_from_memory(struct merge_options *o)
 {
 	struct tree *result = NULL;
+	struct index_state *istate = o->repo->index;
 
-	if (unmerged_cache()) {
+	if (unmerged_index(istate)) {
 		int i;
 		fprintf(stderr, "BUG: There are unmerged index entries:\n");
-		for (i = 0; i < active_nr; i++) {
-			const struct cache_entry *ce = active_cache[i];
+		for (i = 0; i < istate->cache_nr; i++) {
+			const struct cache_entry *ce = istate->cache[i];
 			if (ce_stage(ce))
 				fprintf(stderr, "BUG: %d %.*s\n", ce_stage(ce),
 					(int)ce_namelen(ce), ce->name);
@@ -433,16 +439,16 @@ struct tree *write_tree_from_memory(struct merge_options *o)
 		BUG("unmerged index entries in merge-recursive.c");
 	}
 
-	if (!active_cache_tree)
-		active_cache_tree = cache_tree();
+	if (!istate->cache_tree)
+		istate->cache_tree = cache_tree();
 
-	if (!cache_tree_fully_valid(active_cache_tree) &&
-	    cache_tree_update(&the_index, 0) < 0) {
+	if (!cache_tree_fully_valid(istate->cache_tree) &&
+	    cache_tree_update(istate, 0) < 0) {
 		err(o, _("error building trees"));
 		return NULL;
 	}
 
-	result = lookup_tree(the_repository, &active_cache_tree->oid);
+	result = lookup_tree(o->repo, &istate->cache_tree->oid);
 
 	return result;
 }
@@ -513,17 +519,17 @@ static struct stage_data *insert_stage_data(const char *path,
  * Create a dictionary mapping file names to stage_data objects. The
  * dictionary contains one entry for every path with a non-zero stage entry.
  */
-static struct string_list *get_unmerged(void)
+static struct string_list *get_unmerged(struct index_state *istate)
 {
 	struct string_list *unmerged = xcalloc(1, sizeof(struct string_list));
 	int i;
 
 	unmerged->strdup_strings = 1;
 
-	for (i = 0; i < active_nr; i++) {
+	for (i = 0; i < istate->cache_nr; i++) {
 		struct string_list_item *item;
 		struct stage_data *e;
-		const struct cache_entry *ce = active_cache[i];
+		const struct cache_entry *ce = istate->cache[i];
 		if (!ce_stage(ce))
 			continue;
 
@@ -683,7 +689,7 @@ static int update_stages(struct merge_options *opt, const char *path,
 	int clear = 1;
 	int options = ADD_CACHE_OK_TO_ADD | ADD_CACHE_SKIP_DFCHECK;
 	if (clear)
-		if (remove_file_from_cache(path))
+		if (remove_file_from_index(opt->repo->index, path))
 			return -1;
 	if (o)
 		if (add_cacheinfo(opt, o->mode, &o->oid, path, 1, 0, options))
@@ -718,13 +724,14 @@ static int remove_file(struct merge_options *o, int clean,
 	int update_working_directory = !o->call_depth && !no_wd;
 
 	if (update_cache) {
-		if (remove_file_from_cache(path))
+		if (remove_file_from_index(o->repo->index, path))
 			return -1;
 	}
 	if (update_working_directory) {
 		if (ignore_case) {
 			struct cache_entry *ce;
-			ce = cache_file_exists(path, strlen(path), ignore_case);
+			ce = index_file_exists(o->repo->index, path, strlen(path),
+					       ignore_case);
 			if (ce && ce_stage(ce) == 0 && strcmp(path, ce->name))
 				return 0;
 		}
@@ -774,7 +781,8 @@ static char *unique_path(struct merge_options *o, const char *path, const char *
  * check the working directory.  If empty_ok is non-zero, also return
  * 0 in the case where the working-tree dir exists but is empty.
  */
-static int dir_in_way(const char *path, int check_working_copy, int empty_ok)
+static int dir_in_way(struct index_state *istate, const char *path,
+		      int check_working_copy, int empty_ok)
 {
 	int pos;
 	struct strbuf dirpath = STRBUF_INIT;
@@ -783,12 +791,12 @@ static int dir_in_way(const char *path, int check_working_copy, int empty_ok)
 	strbuf_addstr(&dirpath, path);
 	strbuf_addch(&dirpath, '/');
 
-	pos = cache_name_pos(dirpath.buf, dirpath.len);
+	pos = index_name_pos(istate, dirpath.buf, dirpath.len);
 
 	if (pos < 0)
 		pos = -1 - pos;
-	if (pos < active_nr &&
-	    !strncmp(dirpath.buf, active_cache[pos]->name, dirpath.len)) {
+	if (pos < istate->cache_nr &&
+	    !strncmp(dirpath.buf, istate->cache[pos]->name, dirpath.len)) {
 		strbuf_release(&dirpath);
 		return 1;
 	}
@@ -831,8 +839,10 @@ static int was_tracked(struct merge_options *o, const char *path)
 	return 0;
 }
 
-static int would_lose_untracked(const char *path)
+static int would_lose_untracked(struct merge_options *o, const char *path)
 {
+	struct index_state *istate = o->repo->index;
+
 	/*
 	 * This may look like it can be simplified to:
 	 *   return !was_tracked(o, path) && file_exists(path)
@@ -850,19 +860,19 @@ static int would_lose_untracked(const char *path)
 	 * update_file()/would_lose_untracked(); see every comment in this
 	 * file which mentions "update_stages".
 	 */
-	int pos = cache_name_pos(path, strlen(path));
+	int pos = index_name_pos(istate, path, strlen(path));
 
 	if (pos < 0)
 		pos = -1 - pos;
-	while (pos < active_nr &&
-	       !strcmp(path, active_cache[pos]->name)) {
+	while (pos < istate->cache_nr &&
+	       !strcmp(path, istate->cache[pos]->name)) {
 		/*
 		 * If stage #0, it is definitely tracked.
 		 * If it has stage #2 then it was tracked
 		 * before this merge started.  All other
 		 * cases the path was not tracked.
 		 */
-		switch (ce_stage(active_cache[pos])) {
+		switch (ce_stage(istate->cache[pos])) {
 		case 0:
 		case 2:
 			return 0;
@@ -922,7 +932,7 @@ static int make_room_for_path(struct merge_options *o, const char *path)
 	 * Do not unlink a file in the work tree if we are not
 	 * tracking it.
 	 */
-	if (would_lose_untracked(path))
+	if (would_lose_untracked(o, path))
 		return err(o, _("refusing to lose untracked file at '%s'"),
 			   path);
 
@@ -972,7 +982,7 @@ static int update_file_flags(struct merge_options *o,
 		}
 		if (S_ISREG(mode)) {
 			struct strbuf strbuf = STRBUF_INIT;
-			if (convert_to_working_tree(&the_index, path, buf, size, &strbuf)) {
+			if (convert_to_working_tree(o->repo->index, path, buf, size, &strbuf)) {
 				free(buf);
 				size = strbuf.len;
 				buf = strbuf_detach(&strbuf, NULL);
@@ -1092,7 +1102,7 @@ static int merge_3way(struct merge_options *o,
 
 	merge_status = ll_merge(result_buf, a->path, &orig, base_name,
 				&src1, name1, &src2, name2,
-				&the_index, &ll_opts);
+				o->repo->index, &ll_opts);
 
 	free(base_name);
 	free(name1);
@@ -1103,7 +1113,8 @@ static int merge_3way(struct merge_options *o,
 	return merge_status;
 }
 
-static int find_first_merges(struct object_array *result, const char *path,
+static int find_first_merges(struct repository *repo,
+			     struct object_array *result, const char *path,
 			     struct commit *a, struct commit *b)
 {
 	int i, j;
@@ -1123,7 +1134,7 @@ static int find_first_merges(struct object_array *result, const char *path,
 	/* get all revisions that merge commit a */
 	xsnprintf(merged_revision, sizeof(merged_revision), "^%s",
 		  oid_to_hex(&a->object.oid));
-	repo_init_revisions(the_repository, &revs, NULL);
+	repo_init_revisions(repo, &revs, NULL);
 	rev_opts.submodule = path;
 	/* FIXME: can't handle linked worktrees in submodules yet */
 	revs.single_worktree = path != NULL;
@@ -1201,9 +1212,9 @@ static int merge_submodule(struct merge_options *o,
 		return 0;
 	}
 
-	if (!(commit_base = lookup_commit_reference(the_repository, base)) ||
-	    !(commit_a = lookup_commit_reference(the_repository, a)) ||
-	    !(commit_b = lookup_commit_reference(the_repository, b))) {
+	if (!(commit_base = lookup_commit_reference(o->repo, base)) ||
+	    !(commit_a = lookup_commit_reference(o->repo, a)) ||
+	    !(commit_b = lookup_commit_reference(o->repo, b))) {
 		output(o, 1, _("Failed to merge submodule %s (commits not present)"), path);
 		return 0;
 	}
@@ -1253,7 +1264,8 @@ static int merge_submodule(struct merge_options *o,
 		return 0;
 
 	/* find commit which merges them */
-	parent_count = find_first_merges(&merges, path, commit_a, commit_b);
+	parent_count = find_first_merges(o->repo, &merges, path,
+					 commit_a, commit_b);
 	switch (parent_count) {
 	case 0:
 		output(o, 1, _("Failed to merge submodule %s (merge following commits not found)"), path);
@@ -1390,8 +1402,7 @@ static int merge_mode_and_contents(struct merge_options *o,
 
 static int handle_rename_via_dir(struct merge_options *o,
 				 struct diff_filepair *pair,
-				 const char *rename_branch,
-				 const char *other_branch)
+				 const char *rename_branch)
 {
 	/*
 	 * Handle file adds that need to be renamed due to directory rename
@@ -1401,7 +1412,7 @@ static int handle_rename_via_dir(struct merge_options *o,
 	 */
 	const struct diff_filespec *dest = pair->two;
 
-	if (!o->call_depth && would_lose_untracked(dest->path)) {
+	if (!o->call_depth && would_lose_untracked(o, dest->path)) {
 		char *alt_path = unique_path(o, dest->path, rename_branch);
 
 		output(o, 1, _("Error: Refusing to lose untracked file at %s; "
@@ -1439,8 +1450,8 @@ static int handle_change_delete(struct merge_options *o,
 	const char *update_path = path;
 	int ret = 0;
 
-	if (dir_in_way(path, !o->call_depth, 0) ||
-	    (!o->call_depth && would_lose_untracked(path))) {
+	if (dir_in_way(o->repo->index, path, !o->call_depth, 0) ||
+	    (!o->call_depth && would_lose_untracked(o, path))) {
 		update_path = alt_path = unique_path(o, path, change_branch);
 	}
 
@@ -1450,7 +1461,7 @@ static int handle_change_delete(struct merge_options *o,
 		 * correct; since there is no true "middle point" between
 		 * them, simply reuse the base version for virtual merge base.
 		 */
-		ret = remove_file_from_cache(path);
+		ret = remove_file_from_index(o->repo->index, path);
 		if (!ret)
 			ret = update_file(o, 0, o_oid, o_mode, update_path);
 	} else {
@@ -1526,7 +1537,7 @@ static int handle_rename_delete(struct merge_options *o,
 		return -1;
 
 	if (o->call_depth)
-		return remove_file_from_cache(dest->path);
+		return remove_file_from_index(o->repo->index, dest->path);
 	else
 		return update_stages(o, dest->path, NULL,
 				     rename_branch == o->branch1 ? dest : NULL,
@@ -1607,10 +1618,10 @@ static int handle_file_collision(struct merge_options *o,
 	/* Remove rename sources if rename/add or rename/rename(2to1) */
 	if (prev_path1)
 		remove_file(o, 1, prev_path1,
-			    o->call_depth || would_lose_untracked(prev_path1));
+			    o->call_depth || would_lose_untracked(o, prev_path1));
 	if (prev_path2)
 		remove_file(o, 1, prev_path2,
-			    o->call_depth || would_lose_untracked(prev_path2));
+			    o->call_depth || would_lose_untracked(o, prev_path2));
 
 	/*
 	 * Remove the collision path, if it wouldn't cause dirty contents
@@ -1621,7 +1632,7 @@ static int handle_file_collision(struct merge_options *o,
 		output(o, 1, _("Refusing to lose dirty file at %s"),
 		       collide_path);
 		update_path = alt_path = unique_path(o, collide_path, "merged");
-	} else if (would_lose_untracked(collide_path)) {
+	} else if (would_lose_untracked(o, collide_path)) {
 		/*
 		 * Only way we get here is if both renames were from
 		 * a directory rename AND user had an untracked file
@@ -1717,12 +1728,12 @@ static char *find_path_for_conflict(struct merge_options *o,
 				    const char *branch2)
 {
 	char *new_path = NULL;
-	if (dir_in_way(path, !o->call_depth, 0)) {
+	if (dir_in_way(o->repo->index, path, !o->call_depth, 0)) {
 		new_path = unique_path(o, path, branch1);
 		output(o, 1, _("%s is a directory in %s adding "
 			       "as %s instead"),
 		       path, branch2, new_path);
-	} else if (would_lose_untracked(path)) {
+	} else if (would_lose_untracked(o, path)) {
 		new_path = unique_path(o, path, branch1);
 		output(o, 1, _("Refusing to lose untracked file"
 			       " at %s; adding as %s instead"),
@@ -1783,14 +1794,14 @@ static int handle_rename_rename_1to2(struct merge_options *o,
 				return -1;
 		}
 		else
-			remove_file_from_cache(a->path);
+			remove_file_from_index(o->repo->index, a->path);
 		add = filespec_from_entry(&other, ci->dst_entry2, 3 ^ 1);
 		if (add) {
 			if (update_file(o, 0, &add->oid, add->mode, b->path))
 				return -1;
 		}
 		else
-			remove_file_from_cache(b->path);
+			remove_file_from_index(o->repo->index, b->path);
 	} else {
 		/*
 		 * For each destination path, we need to see if there is a
@@ -1887,7 +1898,7 @@ static struct diff_queue_struct *get_diffpairs(struct merge_options *o,
 	struct diff_queue_struct *ret;
 	struct diff_options opts;
 
-	repo_diff_setup(the_repository, &opts);
+	repo_diff_setup(o->repo, &opts);
 	opts.flags.recursive = 1;
 	opts.flags.rename_empty = 0;
 	opts.detect_rename = merge_detect_rename(o);
@@ -2201,8 +2212,7 @@ static void handle_directory_level_conflicts(struct merge_options *o,
 	remove_hashmap_entries(dir_re_merge, &remove_from_merge);
 }
 
-static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs,
-					     struct tree *tree)
+static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs)
 {
 	struct hashmap *dir_renames;
 	struct hashmap_iter iter;
@@ -2448,8 +2458,7 @@ static void apply_directory_rename_modifications(struct merge_options *o,
 						 struct tree *o_tree,
 						 struct tree *a_tree,
 						 struct tree *b_tree,
-						 struct string_list *entries,
-						 int *clean)
+						 struct string_list *entries)
 {
 	struct string_list_item *item;
 	int stage = (tree == a_tree ? 2 : 3);
@@ -2620,8 +2629,7 @@ static struct string_list *get_renames(struct merge_options *o,
 			apply_directory_rename_modifications(o, pair, new_path,
 							     re, tree, o_tree,
 							     a_tree, b_tree,
-							     entries,
-							     clean_merge);
+							     entries);
 	}
 
 	hashmap_iter_init(&collisions, &iter);
@@ -2932,8 +2940,8 @@ static int detect_and_process_renames(struct merge_options *o,
 	merge_pairs = get_diffpairs(o, common, merge);
 
 	if (o->detect_directory_renames) {
-		dir_re_head = get_directory_renames(head_pairs, head);
-		dir_re_merge = get_directory_renames(merge_pairs, merge);
+		dir_re_head = get_directory_renames(head_pairs);
+		dir_re_merge = get_directory_renames(merge_pairs);
 
 		handle_directory_level_conflicts(o,
 						 dir_re_head, head,
@@ -3042,8 +3050,8 @@ static int blob_unchanged(struct merge_options *opt,
 	 * performed.  Comparison can be skipped if both files are
 	 * unchanged since their sha1s have already been compared.
 	 */
-	if (renormalize_buffer(&the_index, path, o.buf, o.len, &o) |
-	    renormalize_buffer(&the_index, path, a.buf, a.len, &a))
+	if (renormalize_buffer(opt->repo->index, path, o.buf, o.len, &o) |
+	    renormalize_buffer(opt->repo->index, path, a.buf, a.len, &a))
 		ret = (o.len == a.len && !memcmp(o.buf, a.buf, o.len));
 
 error_return:
@@ -3124,7 +3132,7 @@ static int handle_content_merge(struct merge_options *o,
 		a.path = (char *)path1;
 		b.path = (char *)path2;
 
-		if (dir_in_way(path, !o->call_depth,
+		if (dir_in_way(o->repo->index, path, !o->call_depth,
 			       S_ISGITLINK(pair1->two->mode)))
 			df_conflict_remains = 1;
 	}
@@ -3158,8 +3166,8 @@ static int handle_content_merge(struct merge_options *o,
 		pos = index_name_pos(&o->orig_index, path, strlen(path));
 		ce = o->orig_index.cache[pos];
 		if (ce_skip_worktree(ce)) {
-			pos = index_name_pos(&the_index, path, strlen(path));
-			ce = the_index.cache[pos];
+			pos = index_name_pos(o->repo->index, path, strlen(path));
+			ce = o->repo->index->cache[pos];
 			ce->ce_flags |= CE_SKIP_WORKTREE;
 		}
 		return mfi.clean;
@@ -3178,7 +3186,7 @@ static int handle_content_merge(struct merge_options *o,
 	if (df_conflict_remains || is_dirty) {
 		char *new_path;
 		if (o->call_depth) {
-			remove_file_from_cache(path);
+			remove_file_from_index(o->repo->index, path);
 		} else {
 			if (!mfi.clean) {
 				if (update_stages(o, path, &one, &a, &b))
@@ -3256,8 +3264,7 @@ static int process_entry(struct merge_options *o,
 			clean_merge = 1;
 			if (handle_rename_via_dir(o,
 						  conflict_info->pair1,
-						  conflict_info->branch1,
-						  conflict_info->branch2))
+						  conflict_info->branch1))
 				clean_merge = -1;
 			break;
 		case RENAME_ADD:
@@ -3338,7 +3345,7 @@ static int process_entry(struct merge_options *o,
 			oid = b_oid;
 			conf = _("directory/file");
 		}
-		if (dir_in_way(path,
+		if (dir_in_way(o->repo->index, path,
 			       !o->call_depth && !S_ISGITLINK(a_mode),
 			       0)) {
 			char *new_path = unique_path(o, path, add_branch);
@@ -3349,7 +3356,7 @@ static int process_entry(struct merge_options *o,
 			if (update_file(o, 0, oid, mode, new_path))
 				clean_merge = -1;
 			else if (o->call_depth)
-				remove_file_from_cache(path);
+				remove_file_from_index(o->repo->index, path);
 			free(new_path);
 		} else {
 			output(o, 2, _("Adding %s"), path);
@@ -3397,18 +3404,19 @@ int merge_trees(struct merge_options *o,
 		struct tree *common,
 		struct tree **result)
 {
+	struct index_state *istate = o->repo->index;
 	int code, clean;
 	struct strbuf sb = STRBUF_INIT;
 
-	if (!o->call_depth && index_has_changes(&the_index, head, &sb)) {
+	if (!o->call_depth && repo_index_has_changes(o->repo, head, &sb)) {
 		err(o, _("Your local changes to the following files would be overwritten by merge:\n  %s"),
 		    sb.buf);
 		return -1;
 	}
 
 	if (o->subtree_shift) {
-		merge = shift_tree_object(head, merge, o->subtree_shift);
-		common = shift_tree_object(head, common, o->subtree_shift);
+		merge = shift_tree_object(o->repo, head, merge, o->subtree_shift);
+		common = shift_tree_object(o->repo, head, common, o->subtree_shift);
 	}
 
 	if (oid_eq(&common->object.oid, &merge->object.oid)) {
@@ -3428,7 +3436,7 @@ int merge_trees(struct merge_options *o,
 		return -1;
 	}
 
-	if (unmerged_cache()) {
+	if (unmerged_index(istate)) {
 		struct string_list *entries;
 		struct rename_info re_info;
 		int i;
@@ -3443,7 +3451,7 @@ int merge_trees(struct merge_options *o,
 		get_files_dirs(o, head);
 		get_files_dirs(o, merge);
 
-		entries = get_unmerged();
+		entries = get_unmerged(o->repo->index);
 		clean = detect_and_process_renames(o, common, head, merge,
 						   entries, &re_info);
 		record_df_conflict_files(o, entries);
@@ -3544,8 +3552,8 @@ int merge_recursive(struct merge_options *o,
 		/* if there is no common ancestor, use an empty tree */
 		struct tree *tree;
 
-		tree = lookup_tree(the_repository, the_repository->hash_algo->empty_tree);
-		merged_common_ancestors = make_virtual_commit(tree, "ancestor");
+		tree = lookup_tree(o->repo, o->repo->hash_algo->empty_tree);
+		merged_common_ancestors = make_virtual_commit(o->repo, tree, "ancestor");
 	}
 
 	for (iter = ca; iter; iter = iter->next) {
@@ -3559,7 +3567,7 @@ int merge_recursive(struct merge_options *o,
 		 * overwritten it: the committed "conflicts" were
 		 * already resolved.
 		 */
-		discard_cache();
+		discard_index(o->repo->index);
 		saved_b1 = o->branch1;
 		saved_b2 = o->branch2;
 		o->branch1 = "Temporary merge branch 1";
@@ -3575,9 +3583,9 @@ int merge_recursive(struct merge_options *o,
 			return err(o, _("merge returned no commit"));
 	}
 
-	discard_cache();
+	discard_index(o->repo->index);
 	if (!o->call_depth)
-		read_cache();
+		repo_read_index(o->repo);
 
 	o->ancestor = "merged common ancestors";
 	clean = merge_trees(o, get_commit_tree(h1), get_commit_tree(h2),
@@ -3589,7 +3597,7 @@ int merge_recursive(struct merge_options *o,
 	}
 
 	if (o->call_depth) {
-		*result = make_virtual_commit(mrtree, "merged tree");
+		*result = make_virtual_commit(o->repo, mrtree, "merged tree");
 		commit_list_insert(h1, &(*result)->parents);
 		commit_list_insert(h2, &(*result)->parents->next);
 	}
@@ -3602,17 +3610,17 @@ int merge_recursive(struct merge_options *o,
 	return clean;
 }
 
-static struct commit *get_ref(const struct object_id *oid, const char *name)
+static struct commit *get_ref(struct repository *repo, const struct object_id *oid,
+			      const char *name)
 {
 	struct object *object;
 
-	object = deref_tag(the_repository, parse_object(the_repository, oid),
-			   name,
-			   strlen(name));
+	object = deref_tag(repo, parse_object(repo, oid),
+			   name, strlen(name));
 	if (!object)
 		return NULL;
 	if (object->type == OBJ_TREE)
-		return make_virtual_commit((struct tree*)object, name);
+		return make_virtual_commit(repo, (struct tree*)object, name);
 	if (object->type != OBJ_COMMIT)
 		return NULL;
 	if (parse_commit((struct commit *)object))
@@ -3629,22 +3637,22 @@ int merge_recursive_generic(struct merge_options *o,
 {
 	int clean;
 	struct lock_file lock = LOCK_INIT;
-	struct commit *head_commit = get_ref(head, o->branch1);
-	struct commit *next_commit = get_ref(merge, o->branch2);
+	struct commit *head_commit = get_ref(o->repo, head, o->branch1);
+	struct commit *next_commit = get_ref(o->repo, merge, o->branch2);
 	struct commit_list *ca = NULL;
 
 	if (base_list) {
 		int i;
 		for (i = 0; i < num_base_list; ++i) {
 			struct commit *base;
-			if (!(base = get_ref(base_list[i], oid_to_hex(base_list[i]))))
+			if (!(base = get_ref(o->repo, base_list[i], oid_to_hex(base_list[i]))))
 				return err(o, _("Could not parse object '%s'"),
 					   oid_to_hex(base_list[i]));
 			commit_list_insert(base, &ca);
 		}
 	}
 
-	hold_locked_index(&lock, LOCK_DIE_ON_ERROR);
+	repo_hold_locked_index(o->repo, &lock, LOCK_DIE_ON_ERROR);
 	clean = merge_recursive(o, head_commit, next_commit, ca,
 				result);
 	if (clean < 0) {
@@ -3652,7 +3660,7 @@ int merge_recursive_generic(struct merge_options *o,
 		return clean;
 	}
 
-	if (write_locked_index(&the_index, &lock,
+	if (write_locked_index(o->repo->index, &lock,
 			       COMMIT_LOCK | SKIP_IF_UNCHANGED))
 		return err(o, _("Unable to write index."));
 
@@ -3676,10 +3684,12 @@ static void merge_recursive_config(struct merge_options *o)
 	git_config(git_xmerge_config, NULL);
 }
 
-void init_merge_options(struct merge_options *o)
+void init_merge_options(struct merge_options *o,
+			struct repository *repo)
 {
 	const char *merge_verbosity;
 	memset(o, 0, sizeof(struct merge_options));
+	o->repo = repo;
 	o->verbosity = 2;
 	o->buffer_output = 1;
 	o->diff_rename_limit = -1;
@@ -3749,6 +3759,10 @@ int parse_merge_opt(struct merge_options *o, const char *s)
 			return -1;
 		o->merge_detect_rename = 1;
 	}
+	/*
+	 * Please update $__git_merge_strategy_options in
+	 * git-completion.bash when you add new options
+	 */
 	else
 		return -1;
 	return 0;