[PATCH 09/12] builtin/show-ref: ensure mutual exclusiveness of subcommands
From: Patrick Steinhardt <hidden>
Date: 2023-10-24 13:11:19
Subsystem:
the rest · Maintainer:
Linus Torvalds
The git-show-ref(1) command has three different modes, of which one is implicit and the other two can be chosen explicitly by passing a flag. But while these modes are standalone and cause us to execute completely separate code paths, we gladly accept the case where a user asks for both `--exclude-existing` and `--verify` at the same time even though it is not obvious what will happen. Spoiler: we ignore `--verify` and execute the `--exclude-existing` mode. Let's explicitly detect this invalid usage and die in case both modes were requested. Signed-off-by: Patrick Steinhardt <redacted> --- builtin/show-ref.c | 3 +++ t/t1403-show-ref.sh | 5 +++++ 2 files changed, 8 insertions(+)
diff --git a/builtin/show-ref.c b/builtin/show-ref.c
index 5d5d7d22ed1..10d0213e687 100644
--- a/builtin/show-ref.c
+++ b/builtin/show-ref.c@@ -269,6 +269,9 @@ int cmd_show_ref(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, show_ref_options, show_ref_usage, 0); + if ((!!exclude_existing_opts.enabled + !!verify) > 1) + die(_("only one of --exclude-existing or --verify can be given")); + if (exclude_existing_opts.enabled) return cmd_show_ref__exclude_existing(&exclude_existing_opts); else if (verify)
diff --git a/t/t1403-show-ref.sh b/t/t1403-show-ref.sh
index 9252a581abf..3a312c8b27c 100755
--- a/t/t1403-show-ref.sh
+++ b/t/t1403-show-ref.sh@@ -196,4 +196,9 @@ test_expect_success 'show-ref --verify with dangling ref' ' ) ' +test_expect_success 'show-ref sub-modes are mutually exclusive' ' + test_must_fail git show-ref --verify --exclude-existing 2>err && + grep "only one of --exclude-existing or --verify can be given" err +' + test_done
--
2.42.0
Attachments
- signature.asc [application/pgp-signature] 833 bytes