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authorLibravatar Junio C Hamano <gitster@pobox.com>2008-09-21 23:50:05 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2008-09-21 23:50:05 -0700
commit666599d798102df2d7b32196cadb7dfb737e0b32 (patch)
tree21db458120cf33e1031f135f060d21805d3bb825
parentt5510: test "git fetch" following tags minimally (diff)
parentCheck early that a new branch is new and valid (diff)
downloadtgif-666599d798102df2d7b32196cadb7dfb737e0b32.tar.xz
Merge branch 'db/maint-checkout-b'
* db/maint-checkout-b: Check early that a new branch is new and valid
-rw-r--r--builtin-checkout.c12
-rwxr-xr-xt/t7201-co.sh10
2 files changed, 22 insertions, 0 deletions
diff --git a/builtin-checkout.c b/builtin-checkout.c
index 9377a1c71e..4497b7092d 100644
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -580,6 +580,18 @@ no_reference:
return checkout_paths(source_tree, pathspec);
}
+ if (opts.new_branch) {
+ struct strbuf buf;
+ strbuf_init(&buf, 0);
+ strbuf_addstr(&buf, "refs/heads/");
+ strbuf_addstr(&buf, opts.new_branch);
+ if (!get_sha1(buf.buf, rev))
+ die("git checkout: branch %s already exists", opts.new_branch);
+ if (check_ref_format(buf.buf))
+ die("git checkout: we do not like '%s' as a branch name.", opts.new_branch);
+ strbuf_release(&buf);
+ }
+
if (new.name && !new.commit) {
die("Cannot switch branch to a non-commit.");
}
diff --git a/t/t7201-co.sh b/t/t7201-co.sh
index 25181388f8..62d73f934a 100755
--- a/t/t7201-co.sh
+++ b/t/t7201-co.sh
@@ -391,4 +391,14 @@ test_expect_success 'checkout an unmerged path should fail' '
test_cmp sample file
'
+test_expect_success 'failing checkout -b should not break working tree' '
+ git reset --hard master &&
+ git symbolic-ref HEAD refs/heads/master &&
+ test_must_fail git checkout -b renamer side^ &&
+ test $(git symbolic-ref HEAD) = refs/heads/master &&
+ git diff --exit-code &&
+ git diff --cached --exit-code
+
+'
+
test_done