diff options
| -rw-r--r-- | builtin/checkout.c | 23 | ||||
| -rwxr-xr-x | t/t2019-checkout-amiguous-ref.sh | 59 |
2 files changed, 72 insertions, 10 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c index a54583b3a4..953abdd0fa 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -678,7 +678,7 @@ static const char *unique_tracking_name(const char *name) int cmd_checkout(int argc, const char **argv, const char *prefix) { struct checkout_opts opts; - unsigned char rev[20]; + unsigned char rev[20], branch_rev[20]; const char *arg; struct branch_info new; struct tree *source_tree = NULL; @@ -832,18 +832,21 @@ int cmd_checkout(int argc, const char **argv, const char *prefix) argc--; new.name = arg; - if ((new.commit = lookup_commit_reference_gently(rev, 1))) { - setup_branch_path(&new); + setup_branch_path(&new); - if ((check_ref_format(new.path) == CHECK_REF_FORMAT_OK) && - resolve_ref(new.path, rev, 1, NULL)) - ; - else - new.path = NULL; + if (check_ref_format(new.path) == CHECK_REF_FORMAT_OK && + resolve_ref(new.path, branch_rev, 1, NULL)) + hashcpy(rev, branch_rev); + else + new.path = NULL; /* not an existing branch */ + + if (!(new.commit = lookup_commit_reference_gently(rev, 1))) { + /* not a commit */ + source_tree = parse_tree_indirect(rev); + } else { parse_commit(new.commit); source_tree = new.commit->tree; - } else - source_tree = parse_tree_indirect(rev); + } if (!source_tree) /* case (1): want a tree */ die("reference is not a tree: %s", arg); diff --git a/t/t2019-checkout-amiguous-ref.sh b/t/t2019-checkout-amiguous-ref.sh new file mode 100755 index 0000000000..943541d40d --- /dev/null +++ b/t/t2019-checkout-amiguous-ref.sh @@ -0,0 +1,59 @@ +#!/bin/sh + +test_description='checkout handling of ambiguous (branch/tag) refs' +. ./test-lib.sh + +test_expect_success 'setup ambiguous refs' ' + test_commit branch file && + git branch ambiguity && + git branch vagueness && + test_commit tag file && + git tag ambiguity && + git tag vagueness HEAD:file && + test_commit other file +' + +test_expect_success 'checkout ambiguous ref succeeds' ' + git checkout ambiguity >stdout 2>stderr +' + +test_expect_success 'checkout produces ambiguity warning' ' + grep "warning.*ambiguous" stderr +' + +test_expect_success 'checkout chooses branch over tag' ' + echo refs/heads/ambiguity >expect && + git symbolic-ref HEAD >actual && + test_cmp expect actual && + echo branch >expect && + test_cmp expect file +' + +test_expect_success 'checkout reports switch to branch' ' + grep "Switched to branch" stderr && + ! grep "^HEAD is now at" stderr +' + +test_expect_success 'checkout vague ref succeeds' ' + git checkout vagueness >stdout 2>stderr && + test_set_prereq VAGUENESS_SUCCESS +' + +test_expect_success VAGUENESS_SUCCESS 'checkout produces ambiguity warning' ' + grep "warning.*ambiguous" stderr +' + +test_expect_success VAGUENESS_SUCCESS 'checkout chooses branch over tag' ' + echo refs/heads/vagueness >expect && + git symbolic-ref HEAD >actual && + test_cmp expect actual && + echo branch >expect && + test_cmp expect file +' + +test_expect_success VAGUENESS_SUCCESS 'checkout reports switch to branch' ' + grep "Switched to branch" stderr && + ! grep "^HEAD is now at" stderr +' + +test_done |