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2020-11-19t3[0-3]*: adjust the references to the default branch name "main"Johannes Schindelin
Carefully excluding t3040, which sees independent development elsewhere at the time of writing, we transition above-mentioned tests to the default branch name `main`. This trick was performed via $ (cd t && sed -i -e 's/master/main/g' -e 's/MASTER/MAIN/g' \ -e 's/Master/Main/g' -- t3[0-3]*.sh t3206/* && git checkout HEAD -- t3040\*) This allows us to define `GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main` for those tests. Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2020-11-19tests: mark tests relying on the current default for `init.defaultBranch`Johannes Schindelin
In addition to the manual adjustment to let the `linux-gcc` CI job run the test suite with `master` and then with `main`, this patch makes sure that GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is set in all test scripts that currently rely on the initial branch name being `master by default. To determine which test scripts to mark up, the first step was to force-set the default branch name to `master` in - all test scripts that contain the keyword `master`, - t4211, which expects `t/t4211/history.export` with a hard-coded ref to initialize the default branch, - t5560 because it sources `t/t556x_common` which uses `master`, - t8002 and t8012 because both source `t/` which also uses `master`) This trick was performed by this command: $ sed -i '/^ *\. \.\/\(test-lib\|lib-\(bash\|cvs\|git-svn\)\|gitweb-lib\)\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' $(git grep -l master t/t[0-9]*.sh) \ t/t4211*.sh t/t5560*.sh t/t8002*.sh t/t8012*.sh After that, careful, manual inspection revealed that some of the test scripts containing the needle `master` do not actually rely on a specific default branch name: either they mention `master` only in a comment, or they initialize that branch specificially, or they do not actually refer to the current default branch. Therefore, the aforementioned modification was undone in those test scripts thusly: $ git checkout HEAD -- \ t/ t/ \ t/ \ t/ t/ \ t/ t/ \ t/ \ t/ \ t/ t/ \ t/ t/ \ t/ \ t/ t/ \ t/ t/ \ t/ t/ \ t/ t/ \ t/ \ t/ \ t/ t/ \ t/ \ t/ t/ \ t/ We excluded one set of test scripts in these commands, though: the range of `git p4` tests. The reason? `git p4` stores the (foreign) remote branch in the branch called `p4/master`, which is obviously not the default branch. Manual analysis revealed that only five of these tests actually require a specific default branch name to pass; They were modified thusly: $ sed -i '/^ *\. \.\/lib-git-p4\.sh$/i\ GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master\ export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME\ ' t/t980[0167]*.sh t/t9811*.sh Signed-off-by: Johannes Schindelin <> Signed-off-by: Junio C Hamano <>
2017-03-02checkout: restrict @-expansions when finding branchJeff King
When we parse "git checkout $NAME", we try to interpret $NAME as a local branch-name. If it is, then we point HEAD to that branch. Otherwise, we detach the HEAD at whatever commit $NAME points to. We do the interpretation by calling strbuf_branchname(), and then blindly sticking "refs/heads/" on the front. This leads to nonsense results when expansions like "@{upstream}" or "@" point to something besides a local branch. We end up with a local branch name like "refs/heads/origin/master" or "refs/heads/HEAD". Normally this has no user-visible effect because those branches don't exist, and so we fallback to feeding the result to get_sha1(), which resolves them correctly. But as the new test in t3204 shows, there are corner cases where the effect is observable, and we check out the wrong local branch rather than detaching to the correct one. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2017-03-02strbuf_check_ref_format(): expand only local branchesJeff King
This function asks strbuf_branchname() to expand any @-marks in the branchname, and then we blindly stick refs/heads/ in front of the result. This is obviously nonsense if the expansion is "HEAD" or a ref in refs/remotes/. The most obvious end-user effect is that creating or renaming a branch with an expansion may have confusing results (e.g., creating refs/heads/origin/master from "@{upstream}" when the operation should be disallowed). We can fix this by telling strbuf_branchname() that we are only interested in local expansions. Any unexpanded bits are then fed to check_ref_format(), which either disallows them (in the case of "@{upstream}") or lets them through ("refs/heads/@" is technically valid, if a bit silly). Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2017-03-02branch: restrict @-expansions when deletingJeff King
We use strbuf_branchname() to expand the branch name from the command line, so you can delete the branch given by @{-1}, for example. However, we allow other nonsense like "@", and we do not respect our "-r" flag (so we may end up deleting an oddly-named local ref instead of a remote one). We can fix this by passing the appropriate "allowed" flag to strbuf_branchname(). Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>
2017-03-02t3204: test git-branch @-expansion corner casesJeff King
git-branch feeds the branch names from the command line to strbuf_branchname(), but we do not yet tell that function which kinds of expansions should be allowed. Let's create a set of tests that cover both the allowed and disallowed cases. That shows off some breakages where we currently create or delete the wrong ref (and will make sure that we do not break any cases that _should_ be working when we do add more restrictions). Note that we check branch creation and deletion, but do not bother with renames. Those follow the same code path as creation. Signed-off-by: Jeff King <> Signed-off-by: Junio C Hamano <>