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Diffstat (limited to 'Documentation/git-rebase.txt')
| -rw-r--r-- | Documentation/git-rebase.txt | 226 |
1 files changed, 170 insertions, 56 deletions
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt index 96680c8456..3cedfb0fd2 100644 --- a/Documentation/git-rebase.txt +++ b/Documentation/git-rebase.txt @@ -3,17 +3,16 @@ git-rebase(1) NAME ---- -git-rebase - Forward-port local commits to the updated upstream head +git-rebase - Reapply commits on top of another base tip SYNOPSIS -------- [verse] -'git rebase' [-i | --interactive] [options] [--onto <newbase>] - <upstream> [<branch>] -'git rebase' [-i | --interactive] [options] --onto <newbase> +'git rebase' [-i | --interactive] [options] [--exec <cmd>] [--onto <newbase>] + [<upstream> [<branch>]] +'git rebase' [-i | --interactive] [options] [--exec <cmd>] [--onto <newbase>] --root [<branch>] - -'git rebase' --continue | --skip | --abort +'git rebase' --continue | --skip | --abort | --quit | --edit-todo DESCRIPTION ----------- @@ -21,10 +20,18 @@ If <branch> is specified, 'git rebase' will perform an automatic `git checkout <branch>` before doing anything else. Otherwise it remains on the current branch. +If <upstream> is not specified, the upstream configured in +branch.<name>.remote and branch.<name>.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 <upstream> are saved to a temporary area. This is the same set -of commits that would be shown by `git log <upstream>..HEAD` (or -`git log HEAD`, if --root is specified). +of commits that would be shown by `git log <upstream>..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 <upstream>, or <newbase> if the --onto option was supplied. This has the exact same effect as @@ -40,7 +47,7 @@ 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 restore the +that caused the merge failure with `git rebase --skip`. To check out the original <branch> and remove the .git/rebase-apply working files, use the command `git rebase --abort` instead. @@ -66,13 +73,14 @@ would be: D---E---F---G master ------------ -The latter form is just a short-hand of `git checkout topic` -followed by `git rebase 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. For example, running `git rebase master` on the -following history (in which A' and A introduce the same set of changes, +following history (in which `A'` and `A` introduce the same set of changes, but have different committer information): ------------ @@ -173,7 +181,7 @@ 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, +file you edit, you need to tell Git that the conflict has been resolved, typically this would be done with @@ -199,12 +207,24 @@ rebase.stat:: Whether to show a diffstat of what changed upstream since the last rebase. False by default. -rebase.autosquash:: - If set to true enable '--autosquash' option by default. +rebase.autoSquash:: + If set to true enable `--autosquash` option by default. + +rebase.autoStash:: + If set to true enable `--autostash` option by default. + +rebase.missingCommitsCheck:: + If set to "warn", print warnings about removed commits in + interactive mode. If set to "error", print the warnings and + stop the rebase. If set to "ignore", no checking is + done. "ignore" by default. + +rebase.instructionFormat:: + Custom commit list format to use during an `--interactive` rebase. OPTIONS ------- -<newbase>:: +--onto <newbase>:: Starting point at which to create the new commits. If the --onto option is not specified, the starting point is <upstream>. May be any valid commit, and not just an @@ -216,7 +236,8 @@ leave out at most one of A and B, in which case it defaults to HEAD. <upstream>:: Upstream branch to compare against. May be any valid commit, - not just an existing branch name. + not just an existing branch name. Defaults to the configured + upstream for the current branch. <branch>:: Working branch; defaults to HEAD. @@ -225,11 +246,27 @@ leave out at most one of A and B, in which case it defaults to HEAD. Restart the rebasing process after having resolved a merge conflict. --abort:: - Restore the original branch and abort the rebase operation. + Abort the rebase operation and reset HEAD to the original + branch. If <branch> was provided when the rebase operation was + started, then HEAD will be reset to <branch>. 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. + +--keep-empty:: + Keep the commits that do not change anything from its + parents in the result. --skip:: Restart the rebasing process by skipping the current patch. +--edit-todo:: + Edit the todo list during an interactive rebase. + -m:: --merge:: Use merging strategies to rebase. When the recursive (default) merge @@ -256,9 +293,15 @@ which makes little sense. -X <strategy-option>:: --strategy-option=<strategy-option>:: Pass the <strategy-option> through to the merge strategy. - This implies `\--merge` and, if no strategy has been + This implies `--merge` and, if no strategy has been specified, `-s recursive`. Note the reversal of 'ours' and - 'theirs' as noted in above for the `-m` option. + 'theirs' as noted above for the `-m` option. + +-S[<keyid>]:: +--gpg-sign[=<keyid>]:: + 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. -q:: --quiet:: @@ -291,17 +334,29 @@ which makes little sense. -f:: --force-rebase:: - Force the rebase even if the current branch is a descendant - of the commit you are rebasing onto. Normally non-interactive rebase will - exit with the message "Current branch is up to date" in such a - situation. - Incompatible with the --interactive option. + Force a rebase even if the current branch is up to date and + the command without `--force` would return without doing anything. + You may find this (or --no-ff with an interactive rebase) 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.txt[revert-a-faulty-merge How-To] for details). +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 <upstream> + and <branch> when calculating which commits have been + introduced by <branch>. ++ +When --fork-point is active, 'fork_point' will be used instead of +<upstream> to calculate the set of commits to rebase, where +'fork_point' is the result of `git merge-base --fork-point <upstream> +<branch>` command (see linkgit:git-merge-base[1]). If 'fork_point' +ends up being empty, the <upstream> will be used as a fallback. ++ +If either <upstream> or --root is given on the command line, then the +default is `--no-fork-point`, otherwise the default is `--fork-point`. --ignore-whitespace:: --whitespace=<option>:: @@ -315,45 +370,90 @@ link:howto/revert-a-faulty-merge.txt[revert-a-faulty-merge How-To] for details). of the rebased commits (see linkgit:git-am[1]). Incompatible with the --interactive option. +--signoff:: + This flag is passed to 'git am' to sign off all the rebased + commits (see linkgit:git-am[1]). Incompatible with the + --interactive option. + -i:: --interactive:: Make a list of the commits which are about to be rebased. Let the user edit that list before rebasing. This mode can also be used to split commits (see SPLITTING COMMITS below). ++ +The commit list format can be changed by setting the configuration option +rebase.instructionFormat. A customized instruction format will automatically +have the long commit hash prepended to the format. -p:: --preserve-merges:: - Instead of ignoring merges, try to recreate them. + Recreate merge commits instead of flattening the history by replaying + commits a merge commit introduces. Merge conflict resolutions or manual + amendments to merge commits are not preserved. + This uses the `--interactive` machinery internally, but combining it with the `--interactive` option explicitly is generally not a good idea unless you know what you are doing (see BUGS below). +-x <cmd>:: +--exec <cmd>:: + Append "exec <cmd>" after each line creating a commit in the + final history. <cmd> will be interpreted as one or more shell + commands. ++ +You may execute several commands by either using one instance of `--exec` +with several commands: ++ + git rebase -i --exec "cmd1 && cmd2 && ..." ++ +or by giving more than one `--exec`: ++ + git rebase -i --exec "cmd1" --exec "cmd2" --exec ... ++ +If `--autosquash` is used, "exec" lines will not be appended for +the intermediate commits, and will only appear at the end of each +squash/fixup series. ++ +This uses the `--interactive` machinery internally, but it can be run +without an explicit `--interactive`. --root:: Rebase all commits reachable from <branch>, instead of limiting them with an <upstream>. This allows you to rebase - the root commit(s) on a branch. Must be used with --onto, and + the root commit(s) on a branch. When used with --onto, it will skip changes already contained in <newbase> (instead of - <upstream>). When used together with --preserve-merges, 'all' - root commits will be rewritten to have <newbase> as parent + <upstream>) whereas without --onto it will operate on every change. + When used together with both --onto and --preserve-merges, + 'all' root commits will be rewritten to have <newbase> as parent instead. --autosquash:: --no-autosquash:: When the commit log message begins with "squash! ..." (or - "fixup! ..."), and there is a commit whose title begins with - the same ..., automatically modify the todo list of rebase -i - so that the commit marked for squashing comes right after the - commit to be modified, and change the action of the moved - commit from `pick` to `squash` (or `fixup`). + "fixup! ..."), and there is already a commit in the todo list that + matches the same `...`, automatically modify the todo list of rebase + -i so that the commit marked for squashing comes right after the + commit to be modified, and change the action of the moved commit + from `pick` to `squash` (or `fixup`). A commit matches the `...` if + the commit subject matches, or if the `...` refers to the commit's + hash. As a fall-back, partial matches of the commit subject work, + too. The recommended way to create fixup/squash commits is by using + the `--fixup`/`--squash` options of linkgit:git-commit[1]. + -This option is only valid when the '--interactive' option is used. +This option is only valid when the `--interactive` option is used. + -If the '--autosquash' option is enabled by default using the -configuration variable `rebase.autosquash`, this option can be +If the `--autosquash` option is enabled by default using the +configuration variable `rebase.autoSquash`, this option can be used to override and disable this setting. +--autostash:: +--no-autostash:: + Automatically create a temporary stash entry before the operation + begins, and apply it after the operation ends. This means + that you can run rebase on a dirty worktree. However, use + with care: the final stash application after a successful + rebase might result in non-trivial conflicts. + --no-ff:: With --interactive, cherry-pick all rebased commits instead of fast-forwarding over the unchanged ones. This ensures that the @@ -364,7 +464,7 @@ Without --interactive, this is a synonym for --force-rebase. 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.txt[revert-a-faulty-merge How-To] for details). +link:howto/revert-a-faulty-merge.html[revert-a-faulty-merge How-To] for details). include::merge-strategies.txt[] @@ -398,10 +498,13 @@ The interactive mode is meant for this type of workflow: where point 2. consists of several instances of -a. regular use +a) regular use + 1. finish something worthy of a commit 2. commit -b. independent fixup + +b) independent fixup + 1. realize that something does not work 2. fix that 3. commit it @@ -439,6 +542,9 @@ rebasing. If you just want to edit the commit message for a commit, replace the command "pick" with the command "reword". +To drop a commit, replace the command "pick" with "drop", or just +delete the matching line. + If you want to fold two or more commits into one, replace the command "pick" for the second and subsequent commits with "squash" or "fixup". If the commits had different authors, the folded commit will be @@ -503,6 +609,24 @@ in `$SHELL`, or the default shell if `$SHELL` is not set), so you can use shell features (like "cd", ">", ";" ...). The command is run from the root of the working tree. +---------------------------------- +$ git rebase -i --exec "make test" +---------------------------------- + +This command lets you check that intermediate commits are compilable. +The todo list becomes like that: + +-------------------- +pick 5928aea one +exec make test +pick 04d0fda two +exec make test +pick ba46169 three +exec make test +pick f4593f9 four +exec make test +-------------------- + SPLITTING COMMITS ----------------- @@ -553,7 +677,7 @@ on this 'subsystem'. You might end up with a history like the following: ------------ - o---o---o---o---o---o---o---o---o master + o---o---o---o---o---o---o---o master \ o---o---o---o---o subsystem \ @@ -597,8 +721,8 @@ Easy case: The changes are literally the same.:: Hard case: The changes are not the same.:: This happens if the 'subsystem' rebase had conflicts, or used - `\--interactive` to omit, edit, squash, or fixup commits; or - if the upstream used one of `commit \--amend`, `reset`, or + `--interactive` to omit, edit, squash, or fixup commits; or + if the upstream used one of `commit --amend`, `reset`, or `filter-branch`. @@ -634,7 +758,7 @@ correspond to the ones before the rebase. NOTE: While an "easy case recovery" sometimes appears to be successful even in the hard case, it may have unintended consequences. For example, a commit that was removed via `git rebase - \--interactive` will be **resurrected**! + --interactive` will be **resurrected**! The idea is to manually tell 'git rebase' "where the old 'subsystem' ended and your 'topic' began", that is, what the old merge-base @@ -642,7 +766,7 @@ between them was. You will have to find a way to name the last commit of the old 'subsystem', for example: * With the 'subsystem' reflog: after 'git fetch', the old tip of - 'subsystem' is at `subsystem@\{1}`. Subsequent fetches will + 'subsystem' is at `subsystem@{1}`. Subsequent fetches will increase the number. (See linkgit:git-reflog[1].) * Relative to the tip of 'topic': knowing that your 'topic' has three @@ -658,7 +782,6 @@ The ripple effect of a "hard case" recovery is especially bad: 'everyone' downstream from 'topic' will now have to perform a "hard case" recovery too! - BUGS ---- The todo list presented by `--preserve-merges --interactive` does not @@ -681,15 +804,6 @@ by moving the "pick 4" line will result in the following history: 1 --- 2 --- 4 --- 5 ------------ -Authors ------- -Written by Junio C Hamano <gitster@pobox.com> and -Johannes E. Schindelin <johannes.schindelin@gmx.de> - -Documentation --------------- -Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>. - GIT --- Part of the linkgit:git[1] suite |