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2011-12-28Merge branch 'jn/maint-sequencer-fixes' into maintLibravatar Junio C Hamano1-2/+0
* jn/maint-sequencer-fixes: revert: stop creating and removing sequencer-old directory Revert "reset: Make reset remove the sequencer state" revert: do not remove state until sequence is finished revert: allow single-pick in the middle of cherry-pick sequence revert: pass around rev-list args in already-parsed form revert: allow cherry-pick --continue to commit before resuming revert: give --continue handling its own function
2011-12-12Revert "reset: Make reset remove the sequencer state"Libravatar Jonathan Nieder1-2/+0
This reverts commit 95eb88d8ee588d89b4f06d2753ed4d16ab13b39f, which was a UI experiment that did not reflect how "git reset" actually gets used. The reversion also fixes a test, indicated in the patch. Encouraged-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-28Allow checkout -B <current-branch> to update the current branchLibravatar Jonathan Nieder1-2/+4
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>
2011-11-22revert: write REVERT_HEAD pseudoref during conflicted revertLibravatar Jonathan Nieder1-0/+1
When conflicts are encountered while reverting a commit, it can be handy to have the name of that commit easily available. For example, to produce a copy of the patch to refer to while resolving conflicts: $ git revert 2eceb2a8 error: could not revert 2eceb2a8... awesome, buggy feature $ git show -R REVERT_HEAD >the-patch $ edit $(git diff --name-only) Set a REVERT_HEAD pseudoref when "git revert" does not make a commit, for cases like this. This also makes it possible for scripts to distinguish between a revert that encountered conflicts and other sources of an unmerged index. After successfully committing, resetting with "git reset", or moving to another commit with "git checkout" or "git reset", the pseudoref is no longer useful, so remove it. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-05Merge branch 'rr/revert-cherry-pick-continue'Libravatar Junio C Hamano1-0/+2
* rr/revert-cherry-pick-continue: builtin/revert.c: make commit_list_append() static revert: Propagate errors upwards from do_pick_commit revert: Introduce --continue to continue the operation revert: Don't implicitly stomp pending sequencer operation revert: Remove sequencer state when no commits are pending reset: Make reset remove the sequencer state revert: Introduce --reset to remove sequencer state revert: Make pick_commits functionally act on a commit list revert: Save command-line options for continuing operation revert: Save data for continuing after conflict resolution revert: Don't create invalid replay_opts in parse_args revert: Separate cmdline parsing from functional code revert: Introduce struct to keep command-line options revert: Eliminate global "commit" variable revert: Rename no_replay to record_origin revert: Don't check lone argument in get_encoding revert: Simplify and inline add_message_to_msg config: Introduce functions to write non-standard file advice: Introduce error_resolve_conflict
2011-09-16Merge branch 'ci/forbid-unwanted-current-branch-update'Libravatar Junio C Hamano1-9/+12
* ci/forbid-unwanted-current-branch-update: branch --set-upstream: regression fix
2011-09-16branch --set-upstream: regression fixLibravatar Junio C Hamano1-9/+12
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>
2011-08-28Merge branch 'ci/forbid-unwanted-current-branch-update'Libravatar Junio C Hamano1-10/+24
* ci/forbid-unwanted-current-branch-update: Show interpreted branch name in error messages Prevent force-updating of the current branch
2011-08-22Show interpreted branch name in error messagesLibravatar Conrad Irwin1-1/+1
Change the error message when doing: "git branch @{-1}", "git checkout -b @{-1}", or "git branch -m foo @{-1}" * was: A branch named '@{-1}' already exists. * now: A branch named 'bar' already exists. Signed-off-by: Conrad Irwin <conrad.irwin@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-22Prevent force-updating of the current branchLibravatar Conrad Irwin1-10/+24
"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>
2011-08-19branch.c: use the parsed branch nameLibravatar Michael J Gruber1-1/+1
When setting up tracking info, branch.c uses the given branch specifier ("name"). Use the parsed name ("ref.buf") instead so that git branch --set-upstream @{-1} foo sets up tracking info for the previous branch rather than for a branch named "@{-1}". Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-08reset: Make reset remove the sequencer stateLibravatar Ramkumar Ramachandra1-0/+2
Years of muscle memory have trained users to use "git reset --hard" to remove the branch state after any sort operation. Make it also remove the sequencer state to facilitate this established workflow: $ git cherry-pick foo..bar ... conflict encountered ... $ git reset --hard # Oops, I didn't mean that $ git cherry-pick quux..bar ... cherry-pick succeeded ... Guard against accidental removal of the sequencer state by providing one level of "undo". In the first "reset" invocation, ".git/sequencer" is moved to ".git/sequencer-old"; it is completely removed only in the second invocation. Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-15Merge branch 'jh/maint-do-not-track-non-branches'Libravatar Junio C Hamano1-3/+8
* jh/maint-do-not-track-non-branches: branch/checkout --track: Ensure that upstream branch is indeed a branch
2011-02-21Introduce CHERRY_PICK_HEADLibravatar Jay Soffian1-0/+1
When a cherry-pick conflicts git advises: $ git commit -c <original commit id> to preserve the original commit message and authorship. Instead, let's record the original commit id in CHERRY_PICK_HEAD and advise: $ git commit -c CHERRY_PICK_HEAD A later patch teaches git to handle the '-c CHERRY_PICK_HEAD' part. Note that we record CHERRY_PICK_HEAD even in the case where there are no conflicts so that we may use it to communicate authorship to commit; this will then allow us to remove set_author_ident_env from revert.c. However, we do not record CHERRY_PICK_HEAD when --no-commit is used, as presumably the user intends to further edit the commit and possibly even cherry-pick additional commits on top. Tests and documentation contributed by Jonathan Nieder. Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Jay Soffian <jaysoffian@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-16branch/checkout --track: Ensure that upstream branch is indeed a branchLibravatar Johan Herland1-3/+8
When creating a new branch using the --track option, we must make sure that we don't try to set an upstream that does not make sense to follow (using 'git pull') or update (using 'git push'). The current code checks against using HEAD as upstream (since tracking a symref doesn't make sense). However, tracking a tag doesn't make sense either. Indeed, tracking _any_ ref that is not a (local or remote) branch doesn't make sense, and should be disallowed. This patch achieves this by checking that the ref we're trying to --track resides within refs/heads/* or refs/remotes/*. This new check replaces the previous check against HEAD. A couple of testcases are also added, verifying that we cannot create branches with tags as upstreams. Finally, some selftests relying on using a non-branch as an upstream have been reworked or removed: - t6040: Reverse the meaning of two tests that depend on the ability to use (lightweight and annotated) tags as upstreams. These two tests were originally added in commits 1be570f and 57ffc5f, and this patch reverts the intention of those two commits. - t7201: Remove part of a test (introduced in 9188ed8) relying on a non-branch as upstream. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-09builtin/checkout: handle -B from detached HEAD correctlyLibravatar Tay Ray Chuan1-1/+1
Ensure that strcmp() isn't called when head is null. Previously we were getting segfaults when checkout -B was done from a detached HEAD. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-09Merge branch 'rc/maint-reflog-msg-for-forced-branch'Libravatar Junio C Hamano1-1/+1
* rc/maint-reflog-msg-for-forced-branch: branch: say "Reset to" in reflog entries for 'git branch -f' operations Conflicts: builtin-branch.c
2010-01-18branch: warn and refuse to set a branch as a tracking branch of itself.Libravatar Matthieu Moy1-2/+12
Previous patch allows commands like "git branch --set-upstream foo foo", which doesn't make much sense. Warn the user and don't change the configuration in this case. Don't die to let the caller finish its job in such case. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-18Add branch --set-upstreamLibravatar Ilari Liusvaara1-10/+21
Add --set-upstream option to branch that works like --track, except that when branch exists already, its upstream info is changed without changing the ref value. Based-on-patch-from: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-27Convert existing die(..., strerror(errno)) to die_errno()Libravatar Thomas Rast1-2/+2
Change calls to die(..., strerror(errno)) to use the new die_errno(). In the process, also make slight style adjustments: at least state _something_ about the function that failed (instead of just printing the pathname), and put paths in single quotes. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-22strbuf_check_branch_ref(): a helper to check a refname for a branchLibravatar Junio C Hamano1-4/+1
This allows a common calling sequence strbuf_branchname(&ref, name); strbuf_splice(&ref, 0, 0, "refs/heads/", 11); if (check_ref_format(ref.buf)) die(...); to be refactored into if (strbuf_check_branch_ref(&ref, name)) die(...); Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-22strbuf_branchname(): a wrapper for branch name shorthandsLibravatar Junio C Hamano1-6/+1
The function takes a user-supplied string that is supposed to be a branch name, and puts it in a strbuf after expanding possible shorthand notation. A handful of open coded sequence to do this in the existing code have been changed to use this helper function. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-22Rename interpret/substitute nth_last_branch functionsLibravatar Junio C Hamano1-1/+1
These allow you to say "git checkout @{-2}" to switch to the branch two "branch switching" ago by pretending as if you typed the name of that branch. As it is likely that we will be introducing more short-hands to write the name of a branch without writing it explicitly, rename the functions from "nth_last_branch" to more generic "branch_name", to prepare for different semantics. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-10Improve "git branch --tracking" outputLibravatar Junio C Hamano1-6/+17
An earlier patch always spelled the full name of the ref that we track (e.g. "refs/heads/frotz" instead of just "frotz" when we mean the branch whose name is "frotz"). Worse yet, because we now use the true name of the ref at the original repository when talk about a tracking branch that copies from a remote, such a full name alone still does not give enough information. This reorganizes the verbose codepath to: - differentiate "refs/heads/something" and everything else; we say that the branch tracks "branch <something>" if it begins with "refs/heads/", and otherwise the branch tracks "ref refs/<someother>/<something>"; - report the name of the remote when we talk about a tracking branch, by saying "branch frotz from origin"; - not say "by merging" at the end; it is the default and is not worth reporting. Signed-off-by: Junio C Hamano <junio@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-03Make git-clone respect branch.autosetuprebaseLibravatar Junio C Hamano1-16/+33
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>
2009-02-13Teach the "@{-1} syntax to "git branch"Libravatar Junio C Hamano1-5/+14
This teaches the new "@{-1} syntax to refer to the previous branch to "git branch". After looking at somebody's faulty patch series on a topic branch too long, if you decide it is not worth merging, you can just say: $ git checkout master $ git branch -D @{-1} to get rid of it without having to type the name of the topic you now hate so much for wasting a lot of your time. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-21Merge branch 'jc/maint-co-track'Libravatar Junio C Hamano1-1/+3
* jc/maint-co-track: Enhance hold_lock_file_for_{update,append}() API demonstrate breakage of detached checkout with symbolic link HEAD Fix "checkout --track -b newbranch" on detached HEAD Conflicts: builtin-commit.c
2008-10-17Fix "checkout --track -b newbranch" on detached HEADLibravatar Junio C Hamano1-1/+3
The test to make sure that checkout fails when --track was asked for and we cannot set up tracking information in t7201 was wrong, and it turns out that the implementation for that feature itself was buggy. This fixes it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-03builtin-commit: use reduce_heads() only when appropriateLibravatar Miklos Vajna1-0/+1
Since commit 6bb6b034 (builtin-commit: use commit_tree(), 2008-09-10), builtin-commit performs a reduce_heads() unconditionally. However, it's not always needed, and in some cases even harmful. reduce_heads() is not needed for the initial commit or for an "ordinary" commit, because they don't have any or have only one parent, respectively. reduce_heads() must be avoided when 'git commit' is run after a 'git merge --no-ff --no-commit', otherwise it will turn the non-fast-forward merge into fast-forward. For the same reason, reduce_heads() must be avoided when amending such a merge commit. To resolve this issue, 'git merge' will write info about whether fast-forward is allowed or not to $GIT_DIR/MERGE_MODE. Based on this info, 'git commit' will only perform reduce_heads() when it's committing a merge and fast-forward is enabled. Also add test cases to ensure that non-fast-forward merges are committed and amended properly. Signed-off-by: Miklos Vajna <vmiklos@frugalware.org> Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-07-13Move MERGE_RR from .git/rr-cache/ into .git/Libravatar Johannes Schindelin1-1/+1
If you want to reuse the rerere cache in another repository, and set a symbolic link to it, you do not want to have the two repositories interfer with each other by accessing the _same_ MERGE_RR. For example, if you use contrib/git-new-workdir to set up a second working directory, and you have a conflict in one working directory, but commit in the other working directory first, the wrong "resolution" will be recorded. The easy solution is to move MERGE_RR out of the rr-cache/ directory, which also corresponds with the notion that rr-cache/ contains cached resolutions, not some intermediate temporary states. Noticed by Kalle Olavi Niemitalo. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-11Allow tracking branches to set up rebase by default.Libravatar Dustin Sallings1-1/+21
Change cd67e4d4 introduced a new configuration parameter that told pull to automatically perform a rebase instead of a merge. This change provides a configuration option to enable this feature automatically when creating a new branch. If the variable branch.autosetuprebase applies for a branch that's being created, that branch will have branch.<name>.rebase set to true. Signed-off-by: Dustin Sallings <dustin@spy.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-19branch: optionally setup branch.*.merge from upstream local branchesLibravatar Jay Soffian1-20/+24
"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>
2008-02-09Move code to clean up after a branch change to branch.cLibravatar Daniel Barkalow1-0/+8
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09Move create_branch into a library fileLibravatar Daniel Barkalow1-0/+140
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>