[PATCH v2 5/5] commit-graph: show usage on "commit-graph [write|verify] garbage"

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Change the parse_options() invocation in the commit-graph code to make
sense. We're calling it twice, once for common options parsing, and
then for the sub-commands.

But we never checked if we had something leftover in argc in "write"
or "verify", as a result we'd silently accept garbage in these
subcommands. Let's not do that.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 builtin/commit-graph.c  | 10 ++++++++--
 t/t5318-commit-graph.sh |  4 +++-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index 16d2c517e72..bb3e767db33 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -104,7 +104,10 @@ static int graph_verify(int argc, const char **argv)
 	opts.progress = isatty(2);
 	argc = parse_options(argc, argv, NULL,
 			     options,
-			     builtin_commit_graph_verify_usage, 0);
+			     builtin_commit_graph_verify_usage,
+			     PARSE_OPT_KEEP_UNKNOWN);
+	if (argc)
+		usage_with_options(builtin_commit_graph_verify_usage, options);
 
 	if (!opts.obj_dir)
 		opts.obj_dir = get_object_directory();
@@ -261,7 +264,10 @@ static int graph_write(int argc, const char **argv)
 
 	argc = parse_options(argc, argv, NULL,
 			     options,
-			     builtin_commit_graph_write_usage, 0);
+			     builtin_commit_graph_write_usage,
+			     PARSE_OPT_KEEP_UNKNOWN);
+	if (argc)
+		usage_with_options(builtin_commit_graph_write_usage, options);
 
 	if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 		die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
index 5fccce95724..5cf07a6dded 100755
--- a/t/t5318-commit-graph.sh
+++ b/t/t5318-commit-graph.sh
@@ -7,7 +7,9 @@ GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS=0
 
 test_expect_success 'usage' '
 	test_expect_code 129 git commit-graph -h 2>err &&
-	! grep error: err
+	! grep error: err &&
+	test_expect_code 129 git commit-graph write blah &&
+	test_expect_code 129 git commit-graph write verify
 '
 
 test_expect_success 'setup full repo' '
-- 
2.32.0.873.g94a0c75983d




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