#!/bin/sh # # Copyright (c) 2005 Junio C Hamano. # SUBDIRECTORY_OK=Yes OPTIONS_KEEPDASHDASH= OPTIONS_SPEC="\ git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] [<upstream>] [<branch>] git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] --root [<branch>] git-rebase --continue | --abort | --skip | --edit-todo -- Available options are v,verbose! display a diffstat of what changed upstream q,quiet! be quiet. implies --no-stat autostash! automatically stash/stash pop before and after onto=! rebase onto given branch instead of upstream p,preserve-merges! try to recreate merges instead of ignoring them s,strategy=! use the given merge strategy no-ff! cherry-pick all commits, even if unchanged m,merge! use merging strategies to rebase i,interactive! let the user edit the list of commits to rebase x,exec=! add exec lines after each commit of the editable list k,keep-empty preserve empty commits during rebase f,force-rebase! force rebase even if branch is up to date X,strategy-option=! pass the argument through to the merge strategy stat! display a diffstat of what changed upstream n,no-stat! do not show diffstat of what changed upstream verify allow pre-rebase hook to run rerere-autoupdate allow rerere to update index with resolved conflicts root! rebase all reachable commits up to the root(s) autosquash move commits that begin with squash!/fixup! under -i committer-date-is-author-date! passed to 'git am' ignore-date! passed to 'git am' whitespace=! passed to 'git apply' ignore-whitespace! passed to 'git apply' C=! passed to 'git apply' Actions: continue! continue abort! abort and check out the original branch skip! skip current patch and continue edit-todo! edit the todo list during an interactive rebase " . git-sh-setup . git-sh-i18n set_reflog_action rebase require_work_tree_exists cd_to_toplevel LF=' ' ok_to_skip_pre_rebase= resolvemsg=" $(gettext 'When you have resolved this problem, run "git rebase --continue". If you prefer to skip this patch, run "git rebase --skip" instead. To check out the original branch and stop rebasing, run "git rebase --abort".') " unset onto cmd= strategy= strategy_opts= do_merge= merge_dir="$GIT_DIR"/rebase-merge apply_dir="$GIT_DIR"/rebase-apply verbose= diffstat= test "$(git config --bool rebase.stat)" = true && diffstat=t autostash="$(git config --bool rebase.autostash || echo false)" git_am_opt= rebase_root= force_rebase= allow_rerere_autoupdate= # Non-empty if a rebase was in progress when 'git rebase' was invoked in_progress= # One of {am, merge, interactive} type= # One of {"$GIT_DIR"/rebase-apply, "$GIT_DIR"/rebase-merge} state_dir= # One of {'', continue, skip, abort}, as parsed from command line action= preserve_merges= autosquash= keep_empty= test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t read_basic_state () { test -f "$state_dir/head-name" && test -f "$state_dir/onto" && head_name=$(cat "$state_dir"/head-name) && onto=$(cat "$state_dir"/onto) && # We always write to orig-head, but interactive rebase used to write to # head. Fall back to reading from head to cover for the case that the # user upgraded git with an ongoing interactive rebase. if test -f "$state_dir"/orig-head then orig_head=$(cat "$state_dir"/orig-head) else orig_head=$(cat "$state_dir"/head) fi && GIT_QUIET=$(cat "$state_dir"/quiet) && test -f "$state_dir"/verbose && verbose=t test -f "$state_dir"/strategy && strategy="$(cat "$state_dir"/strategy)" test -f "$state_dir"/strategy_opts && strategy_opts="$(cat "$state_dir"/strategy_opts)" test -f "$state_dir"/allow_rerere_autoupdate && allow_rerere_autoupdate="$(cat "$state_dir"/allow_rerere_autoupdate)" } write_basic_state () { echo "$head_name" > "$state_dir"/head-name && echo "$onto" > "$state_dir"/onto && echo "$orig_head" > "$state_dir"/orig-head && echo "$GIT_QUIET" > "$state_dir"/quiet && test t = "$verbose" && : > "$state_dir"/verbose test -n "$strategy" && echo "$strategy" > "$state_dir"/strategy test -n "$strategy_opts" && echo "$strategy_opts" > \ "$state_dir"/strategy_opts test -n "$allow_rerere_autoupdate" && echo "$allow_rerere_autoupdate" > \ "$state_dir"/allow_rerere_autoupdate } output () { case "$verbose" in '') output=$("$@" 2>&1 ) status=$? test $status != 0 && printf "%s\n" "$output" return $status ;; *) "$@" ;; esac } move_to_original_branch () { case "$head_name" in refs/*) message="rebase finished: $head_name onto $onto" git update-ref -m "$message" \ $head_name $(git rev-parse HEAD) $orig_head && git symbolic-ref \ -m "rebase finished: returning to $head_name" \ HEAD $head_name || die "$(gettext "Could not move back to $head_name")" ;; esac } finish_rebase () { if test -f "$state_dir/autostash" then stash_sha1=$(cat "$state_dir/autostash") if git stash apply $stash_sha1 2>&1 >/dev/null then echo "$(gettext 'Applied autostash.')" else git stash store -m "autostash" -q $stash_sha1 || die "$(eval_gettext "Cannot store \$stash_sha1")" gettext 'Applying autostash resulted in conflicts. Your changes are safe in the stash. You can run "git stash pop" or "git stash drop" at any time. ' fi fi git gc --auto && rm -rf "$state_dir" } run_specific_rebase_internal () { if [ "$interactive_rebase" = implied ]; then GIT_EDITOR=: export GIT_EDITOR autosquash= fi # On FreeBSD, the shell's "return" returns from the current # function, not from the current file inclusion. # run_specific_rebase_internal has the file inclusion as a # last statement, so POSIX and FreeBSD's return will do the # same thing. . git-rebase--$type } run_specific_rebase () { run_specific_rebase_internal ret=$? if test $ret -eq 0 then finish_rebase fi exit $ret } run_pre_rebase_hook () { if test -z "$ok_to_skip_pre_rebase" && test -x "$GIT_DIR/hooks/pre-rebase" then "$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || die "$(gettext "The pre-rebase hook refused to rebase.")" fi } test -f "$apply_dir"/applying && die "$(gettext "It looks like git-am is in progress. Cannot rebase.")" if test -d "$apply_dir" then type=am state_dir="$apply_dir" elif test -d "$merge_dir" then if test -f "$merge_dir"/interactive then type=interactive interactive_rebase=explicit else type=merge fi state_dir="$merge_dir" fi test -n "$type" && in_progress=t total_argc=$# while test $# != 0 do case "$1" in --no-verify) ok_to_skip_pre_rebase=yes ;; --verify) ok_to_skip_pre_rebase= ;; --continue|--skip|--abort|--edit-todo) test $total_argc -eq 2 || usage action=${1##--} ;; --onto) test 2 -le "$#" || usage onto="$2" shift ;; -x) test 2 -le "$#" || usage cmd="${cmd}exec $2${LF}" shift ;; -i) interactive_rebase=explicit ;; -k) keep_empty=yes ;; -p) preserve_merges=t test -z "$interactive_rebase" && interactive_rebase=implied ;; --autosquash) autosquash=t ;; --no-autosquash) autosquash= ;; -M|-m) do_merge=t ;; -X) shift strategy_opts="$strategy_opts $(git rev-parse --sq-quote "--$1")" do_merge=t test -z "$strategy" && strategy=recursive ;; -s) shift strategy="$1" do_merge=t ;; -n) diffstat= ;; --stat) diffstat=t ;; --autostash) autostash=true ;; -v) verbose=t diffstat=t GIT_QUIET= ;; -q) GIT_QUIET=t git_am_opt="$git_am_opt -q" verbose= diffstat= ;; --whitespace) shift git_am_opt="$git_am_opt --whitespace=$1" case "$1" in fix|strip) force_rebase=t ;; esac ;; --ignore-whitespace) git_am_opt="$git_am_opt $1" ;; --committer-date-is-author-date|--ignore-date) git_am_opt="$git_am_opt $1" force_rebase=t ;; -C) shift git_am_opt="$git_am_opt -C$1" ;; --root) rebase_root=t ;; -f|--no-ff) force_rebase=t ;; --rerere-autoupdate|--no-rerere-autoupdate) allow_rerere_autoupdate="$1" ;; --) shift break ;; esac shift done test $# -gt 2 && usage if test -n "$cmd" && test "$interactive_rebase" != explicit then die "$(gettext "The --exec option must be used with the --interactive option")" fi if test -n "$action" then test -z "$in_progress" && die "$(gettext "No rebase in progress?")" # Only interactive rebase uses detailed reflog messages if test "$type" = interactive && test "$GIT_REFLOG_ACTION" = rebase then GIT_REFLOG_ACTION="rebase -i ($action)" export GIT_REFLOG_ACTION fi fi if test "$action" = "edit-todo" && test "$type" != "interactive" then die "$(gettext "The --edit-todo action can only be used during interactive rebase.")" fi case "$action" in continue) # Sanity check git rev-parse --verify HEAD >/dev/null || die "$(gettext "Cannot read HEAD")" git update-index --ignore-submodules --refresh && git diff-files --quiet --ignore-submodules || { echo "$(gettext "You must edit all merge conflicts and then mark them as resolved using git add")" exit 1 } read_basic_state run_specific_rebase ;; skip) output git reset --hard HEAD || exit $? read_basic_state run_specific_rebase ;; abort) git rerere clear read_basic_state case "$head_name" in refs/*) git symbolic-ref -m "rebase: aborting" HEAD $head_name || die "$(eval_gettext "Could not move back to \$head_name")" ;; esac output git reset --hard $orig_head finish_rebase exit ;; edit-todo) run_specific_rebase ;; esac # Make sure no rebase is in progress if test -n "$in_progress" then state_dir_base=${state_dir##*/} cmd_live_rebase="git rebase (--continue | --abort | --skip)" cmd_clear_stale_rebase="rm -fr \"$state_dir\"" die " $(eval_gettext 'It seems that there is already a $state_dir_base directory, and I wonder if you are in the middle of another rebase. If that is the case, please try $cmd_live_rebase If that is not the case, please $cmd_clear_stale_rebase and run me again. I am stopping in case you still have something valuable there.')" fi if test -n "$rebase_root" && test -z "$onto" then test -z "$interactive_rebase" && interactive_rebase=implied fi if test -n "$interactive_rebase" then type=interactive state_dir="$merge_dir" elif test -n "$do_merge" then type=merge state_dir="$merge_dir" else type=am state_dir="$apply_dir" fi if test -z "$rebase_root" then case "$#" in 0) if ! upstream_name=$(git rev-parse --symbolic-full-name \ --verify -q @{upstream} 2>/dev/null) then . git-parse-remote error_on_missing_default_upstream "rebase" "rebase" \ "against" "git rebase <branch>" fi ;; *) upstream_name="$1" shift ;; esac upstream=$(peel_committish "${upstream_name}") || die "$(eval_gettext "invalid upstream \$upstream_name")" upstream_arg="$upstream_name" else if test -z "$onto" then empty_tree=`git hash-object -t tree /dev/null` onto=`git commit-tree $empty_tree </dev/null` squash_onto="$onto" fi unset upstream_name unset upstream test $# -gt 1 && usage upstream_arg=--root fi # Make sure the branch to rebase onto is valid. onto_name=${onto-"$upstream_name"} case "$onto_name" in *...*) if left=${onto_name%...*} right=${onto_name#*...} && onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD}) then case "$onto" in ?*"$LF"?*) die "$(eval_gettext "\$onto_name: there are more than one merge bases")" ;; '') die "$(eval_gettext "\$onto_name: there is no merge base")" ;; esac else die "$(eval_gettext "\$onto_name: there is no merge base")" fi ;; *) onto=$(peel_committish "$onto_name") || die "$(eval_gettext "Does not point to a valid commit: \$onto_name")" ;; esac # If the branch to rebase is given, that is the branch we will rebase # $branch_name -- branch being rebased, or HEAD (already detached) # $orig_head -- commit object name of tip of the branch before rebasing # $head_name -- refs/heads/<that-branch> or "detached HEAD" switch_to= case "$#" in 1) # Is it "rebase other $branchname" or "rebase other $commit"? branch_name="$1" switch_to="$1" if git show-ref --verify --quiet -- "refs/heads/$1" && orig_head=$(git rev-parse -q --verify "refs/heads/$1") then head_name="refs/heads/$1" elif orig_head=$(git rev-parse -q --verify "$1") then head_name="detached HEAD" else die "$(eval_gettext "fatal: no such branch: \$branch_name")" fi ;; 0) # Do not need to switch branches, we are already on it. if branch_name=`git symbolic-ref -q HEAD` then head_name=$branch_name branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'` else head_name="detached HEAD" branch_name=HEAD ;# detached fi orig_head=$(git rev-parse --verify HEAD) || exit ;; *) die "BUG: unexpected number of arguments left to parse" ;; esac if test "$autostash" = true && ! (require_clean_work_tree) 2>/dev/null then stash_sha1=$(git stash create "autostash") || die "$(gettext 'Cannot autostash')" mkdir -p "$state_dir" && echo $stash_sha1 >"$state_dir/autostash" && stash_abbrev=$(git rev-parse --short $stash_sha1) && echo "$(eval_gettext 'Created autostash: $stash_abbrev')" && git reset --hard fi require_clean_work_tree "rebase" "$(gettext "Please commit or stash them.")" # Now we are rebasing commits $upstream..$orig_head (or with --root, # everything leading up to $orig_head) on top of $onto # Check if we are already based on $onto with linear history, # but this should be done only when upstream and onto are the same # and if this is not an interactive rebase. mb=$(git merge-base "$onto" "$orig_head") if test "$type" != interactive && test "$upstream" = "$onto" && test "$mb" = "$onto" && # linear history? ! (git rev-list --parents "$onto".."$orig_head" | sane_grep " .* ") > /dev/null then if test -z "$force_rebase" then # Lazily switch to the target branch if needed... test -z "$switch_to" || GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to" \ git checkout "$switch_to" -- say "$(eval_gettext "Current branch \$branch_name is up to date.")" finish_rebase exit 0 else say "$(eval_gettext "Current branch \$branch_name is up to date, rebase forced.")" fi fi # If a hook exists, give it a chance to interrupt run_pre_rebase_hook "$upstream_arg" "$@" if test -n "$diffstat" then if test -n "$verbose" then echo "$(eval_gettext "Changes from \$mb to \$onto:")" fi # We want color (if set), but no pager GIT_PAGER='' git diff --stat --summary "$mb" "$onto" fi test "$type" = interactive && run_specific_rebase # Detach HEAD and reset the tree say "$(gettext "First, rewinding head to replay your work on top of it...")" GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name" \ git checkout -q "$onto^0" || die "could not detach HEAD" git update-ref ORIG_HEAD $orig_head # If the $onto is a proper descendant of the tip of the branch, then # we just fast-forwarded. if test "$mb" = "$orig_head" then say "$(eval_gettext "Fast-forwarded \$branch_name to \$onto_name.")" move_to_original_branch finish_rebase exit 0 fi if test -n "$rebase_root" then revisions="$onto..$orig_head" else revisions="$upstream..$orig_head" fi run_specific_rebase