git-rebase(1)
=============
NAME
----
git-rebase - Reapply commits on top of another base tip
SYNOPSIS
--------
[verse]
'git rebase' [-i | --interactive] [] [--exec ]
[--onto | --keep-base] [ []]
'git rebase' [-i | --interactive] [] [--exec ] [--onto ]
--root []
'git rebase' (--continue | --skip | --abort | --quit | --edit-todo | --show-current-patch)
DESCRIPTION
-----------
If `` is specified, `git rebase` will perform an automatic
`git switch ` before doing anything else. Otherwise
it remains on the current branch.
If `` is not specified, the upstream configured in
`branch..remote` and `branch..merge` options will be used (see
linkgit:git-config[1] for details) and the `--fork-point` option is
assumed. If you are currently not on any branch or if the current
branch does not have a configured upstream, the rebase will abort.
All changes made by commits in the current branch but that are not
in `` are saved to a temporary area. This is the same set
of commits that would be shown by `git log ..HEAD`; or by
`git log 'fork_point'..HEAD`, if `--fork-point` is active (see the
description on `--fork-point` below); or by `git log HEAD`, if the
`--root` option is specified.
The current branch is reset to `` or `` if the
`--onto` option was supplied. This has the exact same effect as
`git reset --hard ` (or ``). `ORIG_HEAD` is set
to point at the tip of the branch before the reset.
[NOTE]
`ORIG_HEAD` is not guaranteed to still point to the previous branch tip
at the end of the rebase if other commands that write that pseudo-ref
(e.g. `git reset`) are used during the rebase. The previous branch tip,
however, is accessible using the reflog of the current branch
(i.e. `@{1}`, see linkgit:gitrevisions[7]).
The commits that were previously saved into the temporary area are
then reapplied to the current branch, one by one, in order. Note that
any commits in `HEAD` which introduce the same textual changes as a commit
in `HEAD..` are omitted (i.e., a patch already accepted upstream
with a different commit message or timestamp will be skipped).
It is possible that a merge failure will prevent this process from being
completely automatic. You will have to resolve any such merge failure
and run `git rebase --continue`. Another option is to bypass the commit
that caused the merge failure with `git rebase --skip`. To check out the
original `` and remove the `.git/rebase-apply` working files, use
the command `git rebase --abort` instead.
Assume the following history exists and the current branch is "topic":
------------
A---B---C topic
/
D---E---F---G master
------------
From this point, the result of either of the following commands:
git rebase master
git rebase master topic
would be:
------------
A'--B'--C' topic
/
D---E---F---G master
------------
*NOTE:* The latter form is just a short-hand of `git checkout topic`
followed by `git rebase master`. When rebase exits `topic` will
remain the checked-out branch.
If the upstream branch already contains a change you have made (e.g.,
because you mailed a patch which was applied upstream), then that commit
will be skipped and warnings will be issued (if the 'merge' backend is
used). For example, running `git rebase master` on the following
history (in which `A'` and `A` introduce the same set of changes, but
have different committer information):
------------
A---B---C topic
/
D---E---A'---F master
------------
will result in:
------------
B'---C' topic
/
D---E---A'---F master
------------
Here is how you would transplant a topic branch based on one
branch to another, to pretend that you forked the topic branch
from the latter branch, using `rebase --onto`.
First let's assume your 'topic' is based on branch 'next'.
For example, a feature developed in 'topic' depends on some
functionality which is found in 'next'.
------------
o---o---o---o---o master
\
o---o---o---o---o next
\
o---o---o topic
------------
We want to make 'topic' forked from branch 'master'; for example,
because the functionality on which 'topic' depends was merged into the
more stable 'master' branch. We want our tree to look like this:
------------
o---o---o---o---o master
| \
| o'--o'--o' topic
\
o---o---o---o---o next
------------
We can get this using the following command:
git rebase --onto master next topic
Another example of --onto option is to rebase part of a
branch. If we have the following situation:
------------
H---I---J topicB
/
E---F---G topicA
/
A---B---C---D master
------------
then the command
git rebase --onto master topicA topicB
would result in:
------------
H'--I'--J' topicB
/
| E---F---G topicA
|/
A---B---C---D master
------------
This is useful when topicB does not depend on topicA.
A range of commits could also be removed with rebase. If we have
the following situation:
------------
E---F---G---H---I---J topicA
------------
then the command
git rebase --onto topicA~5 topicA~3 topicA
would result in the removal of commits F and G:
------------
E---H'---I'---J' topicA
------------
This is useful if F and G were flawed in some way, or should not be
part of topicA. Note that the argument to `--onto` and the ``
parameter can be any valid commit-ish.
In case of conflict, `git rebase` will stop at the first problematic commit
and leave conflict markers in the tree. You can use `git diff` to locate
the markers (<<<<<<) and make edits to resolve the conflict. For each
file you edit, you need to tell Git that the conflict has been resolved,
typically this would be done with
git add
After resolving the conflict manually and updating the index with the
desired resolution, you can continue the rebasing process with
git rebase --continue
Alternatively, you can undo the 'git rebase' with
git rebase --abort
MODE OPTIONS
------------
The options in this section cannot be used with any other option,
including not with each other:
--continue::
Restart the rebasing process after having resolved a merge conflict.
--skip::
Restart the rebasing process by skipping the current patch.
--abort::
Abort the rebase operation and reset HEAD to the original
branch. If `` was provided when the rebase operation was
started, then `HEAD` will be reset to ``. Otherwise `HEAD`
will be reset to where it was when the rebase operation was
started.
--quit::
Abort the rebase operation but `HEAD` is not reset back to the
original branch. The index and working tree are also left
unchanged as a result. If a temporary stash entry was created
using `--autostash`, it will be saved to the stash list.
--edit-todo::
Edit the todo list during an interactive rebase.
--show-current-patch::
Show the current patch in an interactive rebase or when rebase
is stopped because of conflicts. This is the equivalent of
`git show REBASE_HEAD`.
OPTIONS
-------
--onto ::
Starting point at which to create the new commits. If the
`--onto` option is not specified, the starting point is
``. May be any valid commit, and not just an
existing branch name.
+
As a special case, you may use "A\...B" as a shortcut for the
merge base of A and B if there is exactly one merge base. You can
leave out at most one of A and B, in which case it defaults to HEAD.
--keep-base::
Set the starting point at which to create the new commits to the
merge base of `` and ``. Running
`git rebase --keep-base ` is equivalent to
running
`git rebase --reapply-cherry-picks --no-fork-point --onto ...`.
+
This option is useful in the case where one is developing a feature on
top of an upstream branch. While the feature is being worked on, the
upstream branch may advance and it may not be the best idea to keep
rebasing on top of the upstream but to keep the base commit as-is. As
the base commit is unchanged this option implies `--reapply-cherry-picks`
to avoid losing commits.
+
Although both this option and `--fork-point` find the merge base between
`` and ``, this option uses the merge base as the _starting
point_ on which new commits will be created, whereas `--fork-point` uses
the merge base to determine the _set of commits_ which will be rebased.
+
See also INCOMPATIBLE OPTIONS below.
::
Upstream branch to compare against. May be any valid commit,
not just an existing branch name. Defaults to the configured
upstream for the current branch.
::
Working branch; defaults to `HEAD`.
--apply::
Use applying strategies to rebase (calling `git-am`
internally). This option may become a no-op in the future
once the merge backend handles everything the apply one does.
+
See also INCOMPATIBLE OPTIONS below.
--empty=(drop|keep|ask)::
How to handle commits that are not empty to start and are not
clean cherry-picks of any upstream commit, but which become
empty after rebasing (because they contain a subset of already
upstream changes). With drop (the default), commits that
become empty are dropped. With keep, such commits are kept.
With ask (implied by `--interactive`), the rebase will halt when
an empty commit is applied allowing you to choose whether to
drop it, edit files more, or just commit the empty changes.
Other options, like `--exec`, will use the default of drop unless
`-i`/`--interactive` is explicitly specified.
+
Note that commits which start empty are kept (unless `--no-keep-empty`
is specified), and commits which are clean cherry-picks (as determined
by `git log --cherry-mark ...`) are detected and dropped as a
preliminary step (unless `--reapply-cherry-picks` or `--keep-base` is
passed).
+
See also INCOMPATIBLE OPTIONS below.
--no-keep-empty::
--keep-empty::
Do not keep commits that start empty before the rebase
(i.e. that do not change anything from its parent) in the
result. The default is to keep commits which start empty,
since creating such commits requires passing the `--allow-empty`
override flag to `git commit`, signifying that a user is very
intentionally creating such a commit and thus wants to keep
it.
+
Usage of this flag will probably be rare, since you can get rid of
commits that start empty by just firing up an interactive rebase and
removing the lines corresponding to the commits you don't want. This
flag exists as a convenient shortcut, such as for cases where external
tools generate many empty commits and you want them all removed.
+
For commits which do not start empty but become empty after rebasing,
see the `--empty` flag.
+
See also INCOMPATIBLE OPTIONS below.
--reapply-cherry-picks::
--no-reapply-cherry-picks::
Reapply all clean cherry-picks of any upstream commit instead
of preemptively dropping them. (If these commits then become
empty after rebasing, because they contain a subset of already
upstream changes, the behavior towards them is controlled by
the `--empty` flag.)
+
In the absence of `--keep-base` (or if `--no-reapply-cherry-picks` is
given), these commits will be automatically dropped. Because this
necessitates reading all upstream commits, this can be expensive in
repositories with a large number of upstream commits that need to be
read. When using the 'merge' backend, warnings will be issued for each
dropped commit (unless `--quiet` is given). Advice will also be issued
unless `advice.skippedCherryPicks` is set to false (see
linkgit:git-config[1]).
+
`--reapply-cherry-picks` allows rebase to forgo reading all upstream
commits, potentially improving performance.
+
See also INCOMPATIBLE OPTIONS below.
--allow-empty-message::
No-op. Rebasing commits with an empty message used to fail
and this option would override that behavior, allowing commits
with empty messages to be rebased. Now commits with an empty
message do not cause rebasing to halt.
+
See also INCOMPATIBLE OPTIONS below.
-m::
--merge::
Using merging strategies to rebase (default).
+
Note that a rebase merge works by replaying each commit from the working
branch on top of the `` branch. Because of this, when a merge
conflict happens, the side reported as 'ours' is the so-far rebased
series, starting with ``, and 'theirs' is the working branch.
In other words, the sides are swapped.
+
See also INCOMPATIBLE OPTIONS below.
-s ::
--strategy=::
Use the given merge strategy, instead of the default `ort`.
This implies `--merge`.
+
Because `git rebase` replays each commit from the working branch
on top of the `` branch using the given strategy, using
the `ours` strategy simply empties all patches from the ``,
which makes little sense.
+
See also INCOMPATIBLE OPTIONS below.
-X ::
--strategy-option=::
Pass the through to the merge strategy.
This implies `--merge` and, if no strategy has been
specified, `-s ort`. Note the reversal of 'ours' and
'theirs' as noted above for the `-m` option.
+
See also INCOMPATIBLE OPTIONS below.
include::rerere-options.txt[]
-S[]::
--gpg-sign[=]::
--no-gpg-sign::
GPG-sign commits. The `keyid` argument is optional and
defaults to the committer identity; if specified, it must be
stuck to the option without a space. `--no-gpg-sign` is useful to
countermand both `commit.gpgSign` configuration variable, and
earlier `--gpg-sign`.
-q::
--quiet::
Be quiet. Implies `--no-stat`.
-v::
--verbose::
Be verbose. Implies `--stat`.
--stat::
Show a diffstat of what changed upstream since the last rebase. The
diffstat is also controlled by the configuration option rebase.stat.
-n::
--no-stat::
Do not show a diffstat as part of the rebase process.
--no-verify::
This option bypasses the pre-rebase hook. See also linkgit:githooks[5].
--verify::
Allows the pre-rebase hook to run, which is the default. This option can
be used to override `--no-verify`. See also linkgit:githooks[5].
-C::
Ensure at least `` lines of surrounding context match before
and after each change. When fewer lines of surrounding
context exist they all must match. By default no context is
ever ignored. Implies `--apply`.
+
See also INCOMPATIBLE OPTIONS below.
--no-ff::
--force-rebase::
-f::
Individually replay all rebased commits instead of fast-forwarding
over the unchanged ones. This ensures that the entire history of
the rebased branch is composed of new commits.
+
You may find this helpful after reverting a topic branch merge, as this option
recreates the topic branch with fresh commits so it can be remerged
successfully without needing to "revert the reversion" (see the
link:howto/revert-a-faulty-merge.html[revert-a-faulty-merge How-To] for
details).
--fork-point::
--no-fork-point::
Use reflog to find a better common ancestor between ``
and `` when calculating which commits have been
introduced by ``.
+
When `--fork-point` is active, 'fork_point' will be used instead of
`` to calculate the set of commits to rebase, where
'fork_point' is the result of `git merge-base --fork-point ` command (see linkgit:git-merge-base[1]). If 'fork_point'
ends up being empty, the `` will be used as a fallback.
+
If `` or `--keep-base` is given on the command line, then
the default is `--no-fork-point`, otherwise the default is
`--fork-point`. See also `rebase.forkpoint` in linkgit:git-config[1].
+
If your branch was based on `` but `` was rewound and
your branch contains commits which were dropped, this option can be used
with `--keep-base` in order to drop those commits from your branch.
+
See also INCOMPATIBLE OPTIONS below.
--ignore-whitespace::
Ignore whitespace differences when trying to reconcile
differences. Currently, each backend implements an approximation of
this behavior:
+
apply backend;;
When applying a patch, ignore changes in whitespace in context
lines. Unfortunately, this means that if the "old" lines being
replaced by the patch differ only in whitespace from the existing
file, you will get a merge conflict instead of a successful patch
application.
+
merge backend;;
Treat lines with only whitespace changes as unchanged when merging.
Unfortunately, this means that any patch hunks that were intended
to modify whitespace and nothing else will be dropped, even if the
other side had no changes that conflicted.
--whitespace=