merge-{ort,recursive}: remove add_submodule_odb()

After the parent commit and some of its ancestors, the only place
commits are being accessed through alternates is in the user-facing
message formatting code. Fix those, and remove the add_submodule_odb()
calls.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

merge-ort.c

@@ -609,6 +609,7 @@ static int err(struct merge_options *opt, const char *err, ...)
 
 static void format_commit(struct strbuf *sb,
 			  int indent,
+			  struct repository *repo,
 			  struct commit *commit)
 {
 	struct merge_remote_desc *desc;
@@ -622,7 +623,7 @@ static void format_commit(struct strbuf *sb,
 		return;
 	}
 
-	format_commit_message(commit, "%h %s", sb, &ctx);
+	repo_format_commit_message(repo, commit, "%h %s", sb, &ctx);
 	strbuf_addch(sb, '\n');
 }
 
@@ -1578,17 +1579,6 @@ static int merge_submodule(struct merge_options *opt,
 	if (is_null_oid(b))
 		return 0;
 
-	/*
-	 * NEEDSWORK: Remove this when all submodule object accesses are
-	 * through explicitly specified repositores.
-	 */
-	if (add_submodule_odb(path)) {
-		path_msg(opt, path, 0,
-			 _("Failed to merge submodule %s (not checked out)"),
-			 path);
-		return 0;
-	}
-
 	if (repo_submodule_init(&subrepo, opt->repo, path, null_oid())) {
 		path_msg(opt, path, 0,
 				_("Failed to merge submodule %s (not checked out)"),
@@ -1653,7 +1643,7 @@ static int merge_submodule(struct merge_options *opt,
 		break;
 
 	case 1:
-		format_commit(&sb, 4,
+		format_commit(&sb, 4, &subrepo,
 			      (struct commit *)merges.objects[0].item);
 		path_msg(opt, path, 0,
 			 _("Failed to merge submodule %s, but a possible merge "
@@ -1670,7 +1660,7 @@ static int merge_submodule(struct merge_options *opt,
 		break;
 	default:
 		for (i = 0; i < merges.nr; i++)
-			format_commit(&sb, 4,
+			format_commit(&sb, 4, &subrepo,
 				      (struct commit *)merges.objects[i].item);
 		path_msg(opt, path, 0,
 			 _("Failed to merge submodule %s, but multiple "

merge-recursive.c

@@ -334,7 +334,9 @@ static void output(struct merge_options *opt, int v, const char *fmt, ...)
 		flush_output(opt);
 }
 
-static void output_commit_title(struct merge_options *opt, struct commit *commit)
+static void repo_output_commit_title(struct merge_options *opt,
+				     struct repository *repo,
+				     struct commit *commit)
 {
 	struct merge_remote_desc *desc;
 
@@ -343,23 +345,29 @@ static void output_commit_title(struct merge_options *opt, struct commit *commit
 	if (desc)
 		strbuf_addf(&opt->obuf, "virtual %s\n", desc->name);
 	else {
-		strbuf_add_unique_abbrev(&opt->obuf, &commit->object.oid,
-					 DEFAULT_ABBREV);
+		strbuf_repo_add_unique_abbrev(&opt->obuf, repo,
+					      &commit->object.oid,
+					      DEFAULT_ABBREV);
 		strbuf_addch(&opt->obuf, ' ');
-		if (parse_commit(commit) != 0)
+		if (repo_parse_commit(repo, commit) != 0)
 			strbuf_addstr(&opt->obuf, _("(bad commit)\n"));
 		else {
 			const char *title;
-			const char *msg = get_commit_buffer(commit, NULL);
+			const char *msg = repo_get_commit_buffer(repo, commit, NULL);
 			int len = find_commit_subject(msg, &title);
 			if (len)
 				strbuf_addf(&opt->obuf, "%.*s\n", len, title);
-			unuse_commit_buffer(commit, msg);
+			repo_unuse_commit_buffer(repo, commit, msg);
 		}
 	}
 	flush_output(opt);
 }
 
+static void output_commit_title(struct merge_options *opt, struct commit *commit)
+{
+	repo_output_commit_title(opt, the_repository, commit);
+}
+
 static int add_cacheinfo(struct merge_options *opt,
 			 const struct diff_filespec *blob,
 			 const char *path, int stage, int refresh, int options)
@@ -1149,14 +1157,14 @@ static int find_first_merges(struct repository *repo,
 	return result->nr;
 }
 
-static void print_commit(struct commit *commit)
+static void print_commit(struct repository *repo, struct commit *commit)
 {
 	struct strbuf sb = STRBUF_INIT;
 	struct pretty_print_context ctx = {0};
 	ctx.date_mode.type = DATE_NORMAL;
 	/* FIXME: Merge this with output_commit_title() */
 	assert(!merge_remote_util(commit));
-	format_commit_message(commit, " %h: %m %s", &sb, &ctx);
+	repo_format_commit_message(repo, commit, " %h: %m %s", &sb, &ctx);
 	fprintf(stderr, "%s\n", sb.buf);
 	strbuf_release(&sb);
 }
@@ -1196,15 +1204,6 @@ static int merge_submodule(struct merge_options *opt,
 	if (is_null_oid(b))
 		return 0;
 
-	/*
-	 * NEEDSWORK: Remove this when all submodule object accesses are
-	 * through explicitly specified repositores.
-	 */
-	if (add_submodule_odb(path)) {
-		output(opt, 1, _("Failed to merge submodule %s (not checked out)"), path);
-		return 0;
-	}
-
 	if (repo_submodule_init(&subrepo, opt->repo, path, null_oid())) {
 		output(opt, 1, _("Failed to merge submodule %s (not checked out)"), path);
 		return 0;
@@ -1229,7 +1228,7 @@ static int merge_submodule(struct merge_options *opt,
 		oidcpy(result, b);
 		if (show(opt, 3)) {
 			output(opt, 3, _("Fast-forwarding submodule %s to the following commit:"), path);
-			output_commit_title(opt, commit_b);
+			repo_output_commit_title(opt, &subrepo, commit_b);
 		} else if (show(opt, 2))
 			output(opt, 2, _("Fast-forwarding submodule %s"), path);
 		else
@@ -1242,7 +1241,7 @@ static int merge_submodule(struct merge_options *opt,
 		oidcpy(result, a);
 		if (show(opt, 3)) {
 			output(opt, 3, _("Fast-forwarding submodule %s to the following commit:"), path);
-			output_commit_title(opt, commit_a);
+			repo_output_commit_title(opt, &subrepo, commit_a);
 		} else if (show(opt, 2))
 			output(opt, 2, _("Fast-forwarding submodule %s"), path);
 		else
@@ -1274,7 +1273,7 @@ static int merge_submodule(struct merge_options *opt,
 	case 1:
 		output(opt, 1, _("Failed to merge submodule %s (not fast-forward)"), path);
 		output(opt, 2, _("Found a possible merge resolution for the submodule:\n"));
-		print_commit((struct commit *) merges.objects[0].item);
+		print_commit(&subrepo, (struct commit *) merges.objects[0].item);
 		output(opt, 2, _(
 		       "If this is correct simply add it to the index "
 		       "for example\n"
@@ -1287,7 +1286,7 @@ static int merge_submodule(struct merge_options *opt,
 	default:
 		output(opt, 1, _("Failed to merge submodule %s (multiple merges found)"), path);
 		for (i = 0; i < merges.nr; i++)
-			print_commit((struct commit *) merges.objects[i].item);
+			print_commit(&subrepo, (struct commit *) merges.objects[i].item);
 	}
 
 	object_array_clear(&merges);

strbuf.c

@@ -1059,15 +1059,21 @@ void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm,
 	strbuf_setlen(sb, sb->len + len);
 }
 
-void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid,
-			      int abbrev_len)
+void strbuf_repo_add_unique_abbrev(struct strbuf *sb, struct repository *repo,
+				   const struct object_id *oid, int abbrev_len)
 {
 	int r;
 	strbuf_grow(sb, GIT_MAX_HEXSZ + 1);
-	r = find_unique_abbrev_r(sb->buf + sb->len, oid, abbrev_len);
+	r = repo_find_unique_abbrev_r(repo, sb->buf + sb->len, oid, abbrev_len);
 	strbuf_setlen(sb, sb->len + r);
 }
 
+void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid,
+			      int abbrev_len)
+{
+	strbuf_repo_add_unique_abbrev(sb, the_repository, oid, abbrev_len);
+}
+
 /*
  * Returns the length of a line, without trailing spaces.
  *

strbuf.h

@@ -634,8 +634,10 @@ void strbuf_list_free(struct strbuf **list);
  * Add the abbreviation, as generated by find_unique_abbrev, of `sha1` to
  * the strbuf `sb`.
  */
-void strbuf_add_unique_abbrev(struct strbuf *sb,
-			      const struct object_id *oid,
+struct repository;
+void strbuf_repo_add_unique_abbrev(struct strbuf *sb, struct repository *repo,
+				   const struct object_id *oid, int abbrev_len);
+void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid,
 			      int abbrev_len);
 
 /**

t/t6437-submodule-merge.sh

@@ -5,6 +5,9 @@ test_description='merging with submodules'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+GIT_TEST_FATAL_REGISTER_SUBMODULE_ODB=1
+export GIT_TEST_FATAL_REGISTER_SUBMODULE_ODB
+
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-merge.sh