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authorLibravatar René Scharfe <l.s.r@web.de>2020-05-24 09:23:00 +0200
committerLibravatar Junio C Hamano <gitster@pobox.com>2020-05-24 16:21:30 -0700
commitbb2198fb91ada94cfc6f8ec81b9dadcf3959fe10 (patch)
tree362c4c74b87ae64dd97371de02c57d47f6582148
parentcheckout: add tests for -b and --track (diff)
downloadtgif-bb2198fb91ada94cfc6f8ec81b9dadcf3959fe10.tar.xz
checkout: improve error messages for -b with extra argument
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 <peff@peff.net> Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/checkout.c2
-rwxr-xr-xt/t2018-checkout-branch.sh2
-rwxr-xr-xt/t2027-checkout-track.sh2
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
'