From bb2198fb91ada94cfc6f8ec81b9dadcf3959fe10 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ren=C3=A9=20Scharfe?= Date: Sun, 24 May 2020 09:23:00 +0200 Subject: [PATCH] checkout: improve error messages for -b with extra argument MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When we try to create a branch "foo" based on "origin/master" and give git commit -b an extra unsupported argument "bar", it confusingly reports: $ git checkout -b foo origin/master bar fatal: 'bar' is not a commit and a branch 'foo' cannot be created from it $ git checkout --track -b foo origin/master bar fatal: 'bar' is not a commit and a branch 'foo' cannot be created from it That's wrong, because it very well understands that "origin/master" is supposed to be the start point for the new branch and not "bar". Check if we got a commit and show more fitting messages in that case instead: $ git checkout -b foo origin/master bar fatal: Cannot update paths and switch to branch 'foo' at the same time. $ git checkout --track -b foo origin/master bar fatal: '--track' cannot be used with updating paths Original-patch-by: Jeff King Signed-off-by: René Scharfe Signed-off-by: Junio C Hamano --- builtin/checkout.c | 2 +- t/t2018-checkout-branch.sh | 2 +- t/t2027-checkout-track.sh | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/builtin/checkout.c b/builtin/checkout.c index e9d111bb83..24336e1017 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -1689,7 +1689,7 @@ static int checkout_main(int argc, const char **argv, const char *prefix, * Try to give more helpful suggestion. * new_branch && argc > 1 will be caught later. */ - if (opts->new_branch && argc == 1) + if (opts->new_branch && argc == 1 && !new_branch_info.commit) die(_("'%s' is not a commit and a branch '%s' cannot be created from it"), argv[0], opts->new_branch); diff --git a/t/t2018-checkout-branch.sh b/t/t2018-checkout-branch.sh index b166cb302f..5f761bc616 100755 --- a/t/t2018-checkout-branch.sh +++ b/t/t2018-checkout-branch.sh @@ -265,7 +265,7 @@ test_expect_success 'checkout -b rejects an invalid start point' ' test_i18ngrep "is not a commit" err ' -test_expect_failure 'checkout -b rejects an extra path argument' ' +test_expect_success 'checkout -b rejects an extra path argument' ' test_must_fail git checkout -b branch5 branch1 file1 2>err && test_i18ngrep "Cannot update paths and switch to branch" err ' diff --git a/t/t2027-checkout-track.sh b/t/t2027-checkout-track.sh index d0b41d7cd0..bcba1bf90c 100755 --- a/t/t2027-checkout-track.sh +++ b/t/t2027-checkout-track.sh @@ -16,7 +16,7 @@ test_expect_success 'checkout --track -b creates a new tracking branch' ' test $(git config --get branch.branch1.merge) = refs/heads/master ' -test_expect_failure 'checkout --track -b rejects an extra path argument' ' +test_expect_success 'checkout --track -b rejects an extra path argument' ' test_must_fail git checkout --track -b branch2 master one.t 2>err && test_i18ngrep "cannot be used with updating paths" err ' -- 2.11.4.GIT