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Merge branch 'jc/branch-name-sanity'

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"git branch" and "git checkout -b" are now forbidden from creating
a branch whose name is "HEAD".

* jc/branch-name-sanity:
  builtin/branch: remove redundant check for HEAD
  branch: correctly reject refs/heads/{-dash,HEAD}
  branch: split validate_new_branchname() into two
  branch: streamline "attr_only" handling in validate_new_branchname()
This commit is contained in:
Junio C Hamano
2017-11-28 13:41:49 +09:00
parent 5f9953d2c3 662a4c8a09
commit 16169285f1
6 changed files with 106 additions and 43 deletions
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43
t/t1430-bad-ref-name.sh
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@ -331,4 +331,47 @@ test_expect_success 'update-ref --stdin -z fails delete with bad ref name' '
grep "fatal: invalid ref format: ~a" err
'
test_expect_success 'branch rejects HEAD as a branch name' '
test_must_fail git branch HEAD HEAD^ &&
test_must_fail git show-ref refs/heads/HEAD
'
test_expect_success 'checkout -b rejects HEAD as a branch name' '
test_must_fail git checkout -B HEAD HEAD^ &&
test_must_fail git show-ref refs/heads/HEAD
'
test_expect_success 'update-ref can operate on refs/heads/HEAD' '
git update-ref refs/heads/HEAD HEAD^ &&
git show-ref refs/heads/HEAD &&
git update-ref -d refs/heads/HEAD &&
test_must_fail git show-ref refs/heads/HEAD
'
test_expect_success 'branch -d can remove refs/heads/HEAD' '
git update-ref refs/heads/HEAD HEAD^ &&
git branch -d HEAD &&
test_must_fail git show-ref refs/heads/HEAD
'
test_expect_success 'branch -m can rename refs/heads/HEAD' '
git update-ref refs/heads/HEAD HEAD^ &&
git branch -m HEAD tail &&
test_must_fail git show-ref refs/heads/HEAD &&
git show-ref refs/heads/tail
'
test_expect_success 'branch -d can remove refs/heads/-dash' '
git update-ref refs/heads/-dash HEAD^ &&
git branch -d -- -dash &&
test_must_fail git show-ref refs/heads/-dash
'
test_expect_success 'branch -m can rename refs/heads/-dash' '
git update-ref refs/heads/-dash HEAD^ &&
git branch -m -- -dash dash &&
test_must_fail git show-ref refs/heads/-dash &&
git show-ref refs/heads/dash
'
test_done