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Merge branch 'db/maint-checkout-b'

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* db/maint-checkout-b:
  Check early that a new branch is new and valid
This commit is contained in:
Junio C Hamano 2008-09-21 23:50:05 -07:00
commit 666599d798
2 changed files with 22 additions and 0 deletions
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12
builtin-checkout.c
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@ -580,6 +580,18 @@ no_reference:
return checkout_paths(source_tree, pathspec); 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) { if (new.name && !new.commit) {
die("Cannot switch branch to a non-commit."); die("Cannot switch branch to a non-commit.");
} }

10
t/t7201-co.sh
View File

@ -391,4 +391,14 @@ test_expect_success 'checkout an unmerged path should fail' '
test_cmp sample file 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 test_done