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2011-11-07pull: introduce a pull.rebase option to enable --rebaseLibravatar Ævar Arnfjörð Bjarmason1-2/+21
Currently we either need to set branch.<name>.rebase for existing branches if we'd like "git pull" to mean "git pull --rebase", or have the forethought of setting "branch.autosetuprebase" before we create the branch. Introduce a "pull.rebase" option to globally configure "git pull" to mean "git pull --rebase" for any branch. This option will be considered at a lower priority than branch.<name>.rebase, i.e. we could set pull.rebase=true and branch.<name>.rebase=false and the latter configuration option would win. Reviewed-by: Sverre Rabbelier <srabbelier@gmail.com> Reviewed-by: Fernando Vezzosi <buccia@repnz.net> Reviewed-by: Eric Herman <eric@freesa.org> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Liked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-25pull: do not clobber untracked files on initial pullLibravatar Jeff King1-0/+11
For a pull into an unborn branch, we do not use "git merge" at all. Instead, we call read-tree directly. However, we used the --reset parameter instead of "-m", which turns off the safety features. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-29Use reflog in 'pull --rebase . foo'Libravatar Martin von Zweigbergk1-0/+7
Since c85c792 (pull --rebase: be cleverer with rebased upstream branches, 2008-01-26), "git pull --rebase" has used the reflog to try to rebase from the old upstream onto the new upstream. Make this work if the local repository is explicitly passed on the command line as in 'git pull --rebase . foo'. Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> Acked-by: Santi Béjar <santi@agolina.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-21Merge branch 'en/rebase-against-rebase-fix'Libravatar Junio C Hamano1-0/+62
* en/rebase-against-rebase-fix: pull --rebase: Avoid spurious conflicts and reapplying unnecessary patches t5520-pull: Add testcases showing spurious conflicts from git pull --rebase
2010-08-12pull --rebase: Avoid spurious conflicts and reapplying unnecessary patchesLibravatar Elijah Newren1-2/+2
Prior to c85c792 (pull --rebase: be cleverer with rebased upstream branches, 2008-01-26), pull --rebase would run git rebase $merge_head which resulted in a call to git format-patch ... --ignore-if-in-upstream $merge_head..$cur_branch This resulted in patches from $merge_head..$cur_branch being applied, as long as they did not already exist in $cur_branch..$merge_head. Unfortunately, when upstream is rebased, $merge_head..$cur_branch also refers to "old" commits that have already been rebased upstream, meaning that many patches that were already fixed upstream would be reapplied. This could result in many spurious conflicts, as well as reintroduce patches that were intentionally dropped upstream. So the algorithm was changed in c85c792 (pull --rebase: be cleverer with rebased upstream branches, 2008-01-26) and d44e712 (pull: support rebased upstream + fetch + pull --rebase, 2009-07-19). Defining $old_remote_ref to be the most recent entry in the reflog for @{upstream} that is an ancestor of $cur_branch, pull --rebase was changed to run git rebase --onto $merge_head $old_remote_ref which results in a call to git format-patch ... --ignore-if-in-upstream $old_remote_ref..$cur_branch The whole point of this change was to reduce the number of commits being reapplied, by avoiding commits that upstream already has or had. In the rebased upstream case, this change achieved that purpose. It is worth noting, though, that since $old_remote_ref is always an ancestor of $cur_branch (by its definition), format-patch will not know what upstream is and thus will not be able to determine if any patches are already upstream; they will all be reapplied. In the non-rebased upstream case, this new form is usually the same as the original code but in some cases $old_remote_ref can be an ancestor of $(git merge-base $merge_head $cur_branch) meaning that instead of avoiding reapplying commits that upstream already has, it actually includes more such commits. Combined with the fact that format-patch can no longer detect commits that are already upstream (since it is no longer told what upstream is), results in lots of confusion for users (e.g. "git is giving me lots of conflicts in stuff I didn't even change since my last push.") Cases where additional commits could be reapplied include forking from a commit other than the tracking branch, or amending/rebasing after pushing. Cases where the inability to detect upstreamed commits cause problems include independent discovery of a fix and having your patches get upstreamed by some alternative route (e.g. pulling your changes to a third machine, pushing from there, and then going back to your original machine and trying to pull --rebase). Fix the non-rebased upstream case by ignoring $old_remote_ref whenever it is contained in $(git merge-base $merge_head $cur_branch). This should have no affect on the rebased upstream case. Acked-by: Santi Béjar <santi@agolina.net> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-12t5520-pull: Add testcases showing spurious conflicts from git pull --rebaseLibravatar Elijah Newren1-0/+62
Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-05-31tests: use "test_cmp", not "diff", when verifying the resultLibravatar Gary V. Vaughan1-1/+1
In tests, call test_cmp rather than raw diff where possible (i.e. if the output does not go to a pipe), to allow the use of, say, 'cmp' when the default 'diff -u' is not compatible with a vendor diff. When that is not possible, use $DIFF, as set in GIT-BUILD-OPTIONS. Signed-off-by: Gary V. Vaughan <gary@thewrittenword.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-12allow pull --rebase on branch yet to be bornLibravatar Jeff King1-0/+11
When doing a "pull --rebase", we check to make sure that the index and working tree are clean. The index-clean check compares the index against HEAD. The test erroneously reports dirtiness if we don't have a HEAD yet. In such an "unborn branch" case, by definition, a non-empty index won't be based on whatever we are pulling down from the remote, and will lose the local change. Just check if $GIT_DIR/index exists and error out. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-19pull: support rebased upstream + fetch + pull --rebaseLibravatar Santi Béjar1-3/+2
You cannot do a "git pull --rebase" with a rebased upstream, if you have already run "git fetch". Try to behave as if the "git fetch" was not run. In other words, find the fork point of the current branch, where the tip of upstream branch used to be, and use it as the upstream parameter of "git rebase". This patch computes the fork point by walking the reflog to find the first commit which is an ancestor of the current branch. Maybe there are smarter ways to compute it, but this is a straight forward implementation. Signed-off-by: Santi Béjar <santi@agolina.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-19t5520-pull: Test for rebased upstream + fetch + pull --rebaseLibravatar Santi Béjar1-0/+14
If your upstream has rebased you can do: git pull --rebase but only if you haven't fetch before. Mark this case as test_expect_failure, in a later patch it will be changed to test_expect_success. Signed-off-by: Santi Béjar <santi@agolina.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-11parse-remote: support default reflist in get_remote_merge_branchLibravatar Santi Béjar1-0/+14
Expand get_remote_merge_branch to compute the tracking branch to merge when called without arguments (or only the remote name). This allows "git pull --rebase" without arguments (default upstream branch) to work with a rebased upstream. With explicit arguments it already worked. Also add a test to check for this case. Signed-off-by: Santi Béjar <santi@agolina.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-17pull: allow "git pull origin $something:$current_branch" into an unborn branchLibravatar Junio C Hamano1-0/+12
Some misguided documents floating on the Net suggest this sequence: mkdir newdir && cd newdir git init git remote add origin $url git pull origin master:master "git pull" has known about misguided "pull" that lets the underlying fetch update the current branch for a long time. It also has known about "git pull origin master" into a branch yet to be born. These two workarounds however were not aware of the existence of each other and did not work well together. This fixes it. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-22pull --rebase: exit early when the working directory is dirtyLibravatar Johannes Schindelin1-0/+18
When rebasing fails during "pull --rebase", you cannot just clean up the working directory and call "pull --rebase" again, since the remote branch was already fetched. Therefore, die early when the working directory is dirty. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-26pull --rebase: be cleverer with rebased upstream branchesLibravatar Johannes Schindelin1-0/+17
When the upstream branch is tracked, we can detect if that branch was rebased since it was last fetched. Teach git to use that information to rebase from the old remote head onto the new remote head. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-28Teach 'git pull' about --rebaseLibravatar Johannes Schindelin1-0/+22
When calling 'git pull' with the '--rebase' option, it performs a fetch + rebase instead of a fetch + merge. This behavior is more desirable than fetch + pull when a topic branch is ready to be submitted and needs to be update. fetch + rebase might also be considered a better workflow with shared repositories in any case, or for contributors to a centrally managed repository, such as WINE's. As a convenience, you can set the default behavior for a branch by defining the config variable branch.<name>.rebase, which is interpreted as a bool. This setting can be overridden on the command line by --rebase and --no-rebase. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-07War on whitespaceLibravatar Junio C Hamano1-1/+0
This uses "git-apply --whitespace=strip" to fix whitespace errors that have crept in to our source files over time. There are a few files that need to have trailing whitespaces (most notably, test vectors). The results still passes the test, and build result in Documentation/ area is unchanged. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-03-16git-fetch, git-branch: Support local --track via a special remote '.'Libravatar Paolo Bonzini1-0/+24
This patch adds support for a dummy remote '.' to avoid having to declare a fake remote like [remote "local"] url = . fetch = refs/heads/*:refs/heads/* Such a builtin remote simplifies the operation of "git-fetch", which will populate FETCH_HEAD but will not pretend that two repositories are in use, will not create a thin pack, and will not perform any useless remapping of names. The speed improvement is around 20%, and it should improve more if "git-fetch" is converted to a builtin. To this end, git-parse-remote is grown with a new kind of remote, 'builtin'. In git-fetch.sh, we treat the builtin remote specially in that it needs no pack/store operations. In fact, doing git-fetch on a builtin remote will simply populate FETCH_HEAD appropriately. The patch also improves of the --track/--no-track support, extending it so that branch.<name>.remote items referring '.' can be created. Finally, it fixes a typo in git-checkout.sh. Signed-off-by: Paolo Bonzini <bonzini@gnu.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-12use 'init' instead of 'init-db' for shipped docs and toolsLibravatar Nicolas Pitre1-1/+1
While 'init-db' still is and probably will always remain a valid git command for obvious backward compatibility reasons, it would be a good idea to move shipped tools and docs to using 'init' instead. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-11-16git-pull: allow pulling into an empty repositoryLibravatar Linus Torvalds1-0/+33
We used to complain that we cannot merge anything we fetched with a local branch that does not exist yet. Just treat the case as a natural extension of fast forwarding and make the local branch'es tip point at the same commit we just fetched. After all an empty repository without an initial commit is an ancestor of any commit. [jc: I added a trivial test. We've become sloppy but we should stick to the discipline of covering new behaviour with new tests. ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>