[PATCH 07/10] sparse-checkout: fill in some options boilerplate

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The sparse-checkout passes along argv and argc to its sub-command helper
functions. Many of these sub-commands do not yet take any command-line
options, and ignore those parameters.

Let's instead add empty option lists and make sure we call
parse_options(). That will give a useful error message for something
like:

  git sparse-checkout list --nonsense

which currently just silently ignores the unknown option.

As a bonus, it also silences some -Wunused-parameter warnings.

Signed-off-by: Jeff King <peff@xxxxxxxx>
---
 builtin/sparse-checkout.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c
index 4003f4d13a..e3140db2a0 100644
--- a/builtin/sparse-checkout.c
+++ b/builtin/sparse-checkout.c
@@ -46,12 +46,24 @@ static void write_patterns_to_file(FILE *fp, struct pattern_list *pl)
 	}
 }
 
+static char const * const builtin_sparse_checkout_list_usage[] = {
+	N_("git sparse-checkout list"),
+	NULL
+};
+
 static int sparse_checkout_list(int argc, const char **argv)
 {
+	static struct option builtin_sparse_checkout_list_options[] = {
+		OPT_END(),
+	};
 	struct pattern_list pl;
 	char *sparse_filename;
 	int res;
 
+	argc = parse_options(argc, argv, NULL,
+			     builtin_sparse_checkout_list_options,
+			     builtin_sparse_checkout_list_usage, 0);
+
 	memset(&pl, 0, sizeof(pl));
 
 	pl.use_cone_patterns = core_sparse_checkout_cone;
@@ -560,17 +572,42 @@ static int sparse_checkout_set(int argc, const char **argv, const char *prefix,
 	return modify_pattern_list(argc, argv, m);
 }
 
+static char const * const builtin_sparse_checkout_reapply_usage[] = {
+	N_("git sparse-checkout reapply"),
+	NULL
+};
+
 static int sparse_checkout_reapply(int argc, const char **argv)
 {
+	static struct option builtin_sparse_checkout_reapply_options[] = {
+		OPT_END(),
+	};
+
+	argc = parse_options(argc, argv, NULL,
+			     builtin_sparse_checkout_reapply_options,
+			     builtin_sparse_checkout_reapply_usage, 0);
+
 	repo_read_index(the_repository);
 	return update_working_directory(NULL);
 }
 
+static char const * const builtin_sparse_checkout_disable_usage[] = {
+	N_("git sparse-checkout disable"),
+	NULL
+};
+
 static int sparse_checkout_disable(int argc, const char **argv)
 {
+	static struct option builtin_sparse_checkout_disable_options[] = {
+		OPT_END(),
+	};
 	struct pattern_list pl;
 	struct strbuf match_all = STRBUF_INIT;
 
+	argc = parse_options(argc, argv, NULL,
+			     builtin_sparse_checkout_disable_options,
+			     builtin_sparse_checkout_disable_usage, 0);
+
 	repo_read_index(the_repository);
 
 	memset(&pl, 0, sizeof(pl));
-- 
2.28.0.1173.gad90222cf0




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