From: Kristoffer Haugsbakk Date: Mon, 5 Jan 2026 19:53:19 +0000 (+0100) Subject: replay: die descriptively when invalid commit-ish is given X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3074d08cfa1bfb75f96fa4a240c575fad4cb8060;p=thirdparty%2Fgit.git replay: die descriptively when invalid commit-ish is given Giving an invalid commit-ish to `--onto` makes git-replay(1) fail with: fatal: Replaying down to root commit is not supported yet! Going backwards from this point: 1. `onto` is `NULL` from `set_up_replay_mode`; 2. that function in turn calls `peel_committish`; and 3. here we return `NULL` if `repo_get_oid` fails. Let’s die immediately with a descriptive error message instead. Doing this also provides us with a descriptive error if we “forget” to provide an argument to `--onto` (but we really do unintentionally):[1] $ git replay --onto ^main topic1 fatal: '^main' is not a valid commit-ish Note that the `--advance` case won’t be triggered in practice because of the “argument to --advance must be a reference” check (see the previous test, and commit). † 1: The argument to `--onto` is mandatory and the option parser accepts both `--onto=` (stuck form) and `--onto name`. The latter form makes it easy to unintentionally pass something to the option when you really meant to pass a positional argument. Signed-off-by: Kristoffer Haugsbakk Signed-off-by: Junio C Hamano --- diff --git a/builtin/replay.c b/builtin/replay.c index 9265ebcd05..1899ccc7cc 100644 --- a/builtin/replay.c +++ b/builtin/replay.c @@ -33,13 +33,15 @@ static const char *short_commit_name(struct repository *repo, DEFAULT_ABBREV); } -static struct commit *peel_committish(struct repository *repo, const char *name) +static struct commit *peel_committish(struct repository *repo, + const char *name, + const char *mode) { struct object *obj; struct object_id oid; if (repo_get_oid(repo, name, &oid)) - return NULL; + die(_("'%s' is not a valid commit-ish for %s"), name, mode); obj = parse_object(repo, &oid); return (struct commit *)repo_peel_to_type(repo, name, 0, obj, OBJ_COMMIT); @@ -178,7 +180,7 @@ static void set_up_replay_mode(struct repository *repo, die_for_incompatible_opt2(!!onto_name, "--onto", !!*advance_name, "--advance"); if (onto_name) { - *onto = peel_committish(repo, onto_name); + *onto = peel_committish(repo, onto_name, "--onto"); if (rinfo.positive_refexprs < strset_get_size(&rinfo.positive_refs)) die(_("all positive revisions given must be references")); @@ -199,7 +201,7 @@ static void set_up_replay_mode(struct repository *repo, } else { die(_("argument to --advance must be a reference")); } - *onto = peel_committish(repo, *advance_name); + *onto = peel_committish(repo, *advance_name, "--advance"); if (rinfo.positive_refexprs > 1) die(_("cannot advance target with multiple sources because ordering would be ill-defined")); } @@ -416,8 +418,7 @@ int cmd_replay(int argc, onto_name, &advance_name, &onto, &update_refs); - if (!onto) /* FIXME: Should handle replaying down to root commit */ - die("Replaying down to root commit is not supported yet!"); + /* FIXME: Should handle replaying down to root commit */ /* Build reflog message */ if (advance_name_opt) diff --git a/t/t3650-replay-basics.sh b/t/t3650-replay-basics.sh index 8ef0b1984d..8d82dad714 100755 --- a/t/t3650-replay-basics.sh +++ b/t/t3650-replay-basics.sh @@ -58,6 +58,13 @@ test_expect_success 'argument to --advance must be a reference' ' test_cmp expect actual ' +test_expect_success '--onto with invalid commit-ish' ' + printf "fatal: ${SQ}refs/not-valid${SQ} is not " >expect && + printf "a valid commit-ish for --onto\n" >>expect && + test_must_fail git replay --onto=refs/not-valid topic1..topic2 2>actual && + test_cmp expect actual +' + test_expect_success 'using replay to rebase two branches, one on top of other' ' git replay --ref-action=print --onto main topic1..topic2 >result &&