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This function find_shared_symref() is used in a couple places:
1) in builtin/branch.c: it's used to detect if a branch is checked out
elsewhere and refuse to delete the branch.
2) in builtin/notes.c: it's used to detect if a note is being merged in
another worktree
3) in branch.c, the function die_if_checked_out() is actually used by
"git checkout" and "git worktree add" to see if a branch is already
checked out elsewhere and refuse the operation.
In cases 1 and 3, if a rebase is ongoing, "HEAD" will be in detached
mode, find_shared_symref() fails to detect it and declares "no branch is
checked out here", which is not really what we want.
This patch tightens the test. If the given symref is "HEAD", we try to
detect if rebase is ongoing. If so return the branch being rebased. This
makes checkout and branch delete operations safer because you can't
checkout a branch being rebased in another place, or delete it.
Special case for checkout. If the current branch is being rebased,
git-rebase.sh may use "git checkout" to abort and return back to the
original branch. The updated test in find_shared_symref() will prevent
that and "git rebase --abort" will fail as a result.
find_shared_symref() and die_if_checked_out() have to learn a new
option ignore_current_worktree to loosen the test a bit.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When renaming a branch, currently only the HEAD of current working tree
is updated, but it must update HEADs of all working trees which point at
the old branch.
This is the current behavior, /path/to/wt's HEAD is not updated:
% git worktree list
/path/to 2c3c5f2 [master]
/path/to/wt 2c3c5f2 [oldname]
% git branch -m master master2
% git worktree list
/path/to 2c3c5f2 [master2]
/path/to/wt 2c3c5f2 [oldname]
% git branch -m oldname newname
% git worktree list
/path/to 2c3c5f2 [master2]
/path/to/wt 0000000 [oldname]
This patch fixes this issue by updating all relevant worktree HEADs
when renaming a branch.
Signed-off-by: Kazuki Yamaguchi <k@rhe.jp>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When setting up a new tracking branch fails due to issues with
the configuration file we do not report any errors to the user
and pretend setting the tracking branch succeeded.
Setting up the tracking branch is handled by the
`install_branch_config` function. We do not want to simply die
there as the function is not only invoked when explicitly setting
upstream information with `git branch --set-upstream-to=`, but
also by `git push --set-upstream` and `git clone`. While it is
reasonable to die in the explict first case, we would lose
information in the latter two cases, so we only print the error
message but continue the program as usual.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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worktree.c contains functions to work with and get information from
worktrees. This introduction moves functions related to worktrees
from branch.c into worktree.c
Signed-off-by: Michael Rappazzo <rappazzo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a new function, find_shared_symref, which contains the heart of
die_if_checked_out, but works for any symref, not just HEAD. Refactor
die_if_checked_out to use the same infrastructure as
find_shared_symref.
Soon, we will use find_shared_symref to protect notes merges in
worktrees.
Signed-off-by: David Turner <dturner@twopensource.com>
Reviewed-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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git-worktree currently conflates new branch creation, setting of HEAD in
the new wortkree, and worktree population into a single sub-invocation
of git-checkout. However, these operations will eventually be separated,
and git-worktree itself will need to be able to detect if the branch is
already checked out elsewhere, rather than relying upon git-branch to
make this determination, so publish die_if_checked_out().
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Like the "switched to..." message (which is already
suppressed by "-q"), this message is purely informational.
Let's silence it if the user asked us to be quiet.
This patch is slightly more than a one-liner, because we
have to teach create_branch to propagate the flag all the
way down to install_branch_config.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jn/branch-move-to-self:
Allow checkout -B <current-branch> to update the current branch
branch: allow a no-op "branch -M <current-branch> HEAD"
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When on master, "git checkout -B master <commit>" is a more natural way to
say "git reset --keep <commit>", which was originally invented for the
exact purpose of moving to the named commit while keeping the local changes
around.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This will be used by various callers that make use of the branch
description throughout the system, so that if we need to update
the implementation the callers do not have to be modified.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "git branch" command, while not in listing mode, calls create_branch()
even when the target branch already exists, and it does so even when it is
not interested in updating the value of the branch (i.e. the name of the
commit object that sits at the tip of the existing branch). This happens
when the command is run with "--set-upstream" option.
The earlier safety-measure to prevent "git branch -f $branch $commit" from
updating the currently checked out branch did not take it into account,
and we no longer can update the tracking information of the current branch.
Minimally fix this regression by telling the validation code if it is
called to really update the value of a potentially existing branch, or if
the caller merely is interested in updating auxiliary aspects of a branch.
Reported-and-Tested-by: Jay Soffian
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git branch -M <foo> <current-branch>" allows updating the current branch
which HEAD points, without the necessary house-keeping that git reset
normally does to make this operation sensible. It also leaves the reflog
in a confusing state (you would be warned when trying to read it).
"git checkout -B <current branch> <foo>" is also partly vulnerable to this
bug; due to inconsistent pre-flight checks it would perform half of its
task and then abort just before rewriting the branch. Again this
manifested itself as the index file getting out-of-sync with HEAD.
"git branch -f" already guarded against this problem, and aborts with
a fatal error.
Update "git branch -M", "git checkout -B" and "git branch -f" to share the
same check before allowing a branch to be created. These prevent you from
updating the current branch.
We considered suggesting the use of "git reset" in the failure message
but concluded that it was not possible to discern what the user was
actually trying to do.
Signed-off-by: Conrad Irwin <conrad.irwin@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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(Just like we did for documentation already)
In the process, we change "non-remote branch" to "branch outside the
refs/remotes/ hierarchy" to avoid the ugly "non-remote-tracking branch".
The new formulation actually corresponds to how the code detects this
case (i.e. prefixcmp(refname, "refs/remotes")).
Also, we use 'remote-tracking branch' in generated merge messages (by
merge an fmt-merge-msg).
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When git-clone creates an initial branch it was not checking the
branch.autosetuprebase configuration option (which may exist in
~/.gitconfig). Refactor the code used by "git branch" to create
a new branch, and use it instead of the insufficiently duplicated code
in builtin-clone.
Changes are partly, and the test is mostly, based on the previous work by
Pat Notz.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git branch" and "git checkout -b" now honor --track option even when
the upstream branch is local. Previously --track was silently ignored
when forking from a local branch. Also the command did not error out
when --track was explicitly asked for but the forked point specified
was not an existing branch (i.e. when there is no way to set up the
tracking configuration), but now it correctly does.
The configuration setting branch.autosetupmerge can now be set to
"always", which is equivalent to using --track from the command line.
Setting branch.autosetupmerge to "true" will retain the former behavior
of only setting up branch.*.merge for remote upstream branches.
Includes test cases for the new functionality.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
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You can also create branches, in exactly the same way, with checkout -b.
This introduces branch.{c,h} library files for doing porcelain-level
operations on branches (such as creating them with their appropriate
default configuration).
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
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Nguyễn Thái Ngọc Duy
Kazuki Yamaguchi
Patrick Steinhardt
Michael Rappazzo
David Turner
Eric Sunshine
Jeff King
Junio C Hamano
Jonathan Nieder
Conrad Irwin
Matthieu Moy
Jay Soffian
Daniel Barkalow