Andrew's git / gitweb.git / git-rebase.sh
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git-rebase.shon commit t4042: abstract away SHA-1-specific constants (e4c5652)
   1#!/bin/sh
   2#
   3# Copyright (c) 2005 Junio C Hamano.
   4#
   5
   6SUBDIRECTORY_OK=Yes
   7OPTIONS_KEEPDASHDASH=
   8OPTIONS_STUCKLONG=t
   9OPTIONS_SPEC="\
  10git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] [<upstream>] [<branch>]
  11git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] --root [<branch>]
  12git rebase --continue | --abort | --skip | --edit-todo
  13--
  14 Available options are
  15v,verbose!         display a diffstat of what changed upstream
  16q,quiet!           be quiet. implies --no-stat
  17autostash          automatically stash/stash pop before and after
  18fork-point         use 'merge-base --fork-point' to refine upstream
  19onto=!             rebase onto given branch instead of upstream
  20p,preserve-merges! try to recreate merges instead of ignoring them
  21s,strategy=!       use the given merge strategy
  22no-ff!             cherry-pick all commits, even if unchanged
  23m,merge!           use merging strategies to rebase
  24i,interactive!     let the user edit the list of commits to rebase
  25x,exec=!           add exec lines after each commit of the editable list
  26k,keep-empty       preserve empty commits during rebase
  27allow-empty-message allow rebasing commits with empty messages
  28f,force-rebase!    force rebase even if branch is up to date
  29X,strategy-option=! pass the argument through to the merge strategy
  30stat!              display a diffstat of what changed upstream
  31n,no-stat!         do not show diffstat of what changed upstream
  32verify             allow pre-rebase hook to run
  33rerere-autoupdate  allow rerere to update index with resolved conflicts
  34root!              rebase all reachable commits up to the root(s)
  35autosquash         move commits that begin with squash!/fixup! under -i
  36committer-date-is-author-date! passed to 'git am'
  37ignore-date!       passed to 'git am'
  38signoff            passed to 'git am'
  39whitespace=!       passed to 'git apply'
  40ignore-whitespace! passed to 'git apply'
  41C=!                passed to 'git apply'
  42S,gpg-sign?        GPG-sign commits
  43 Actions:
  44continue!          continue
  45abort!             abort and check out the original branch
  46skip!              skip current patch and continue
  47edit-todo!         edit the todo list during an interactive rebase
  48quit!              abort but keep HEAD where it is
  49show-current-patch! show the patch file being applied or merged
  50"
  51. git-sh-setup
  52set_reflog_action rebase
  53require_work_tree_exists
  54cd_to_toplevel
  55
  56LF='
  57'
  58ok_to_skip_pre_rebase=
  59resolvemsg="
  60$(gettext 'Resolve all conflicts manually, mark them as resolved with
  61"git add/rm <conflicted_files>", then run "git rebase --continue".
  62You can instead skip this commit: run "git rebase --skip".
  63To abort and get back to the state before "git rebase", run "git rebase --abort".')
  64"
  65squash_onto=
  66unset onto
  67unset restrict_revision
  68cmd=
  69strategy=
  70strategy_opts=
  71do_merge=
  72merge_dir="$GIT_DIR"/rebase-merge
  73apply_dir="$GIT_DIR"/rebase-apply
  74verbose=
  75diffstat=
  76test "$(git config --bool rebase.stat)" = true && diffstat=t
  77autostash="$(git config --bool rebase.autostash || echo false)"
  78fork_point=auto
  79git_am_opt=
  80git_format_patch_opt=
  81rebase_root=
  82force_rebase=
  83allow_rerere_autoupdate=
  84# Non-empty if a rebase was in progress when 'git rebase' was invoked
  85in_progress=
  86# One of {am, merge, interactive}
  87type=
  88# One of {"$GIT_DIR"/rebase-apply, "$GIT_DIR"/rebase-merge}
  89state_dir=
  90# One of {'', continue, skip, abort}, as parsed from command line
  91action=
  92preserve_merges=
  93autosquash=
  94keep_empty=
  95allow_empty_message=
  96signoff=
  97test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t
  98case "$(git config --bool commit.gpgsign)" in
  99true)   gpg_sign_opt=-S ;;
 100*)      gpg_sign_opt= ;;
 101esac
 102
 103read_basic_state () {
 104        test -f "$state_dir/head-name" &&
 105        test -f "$state_dir/onto" &&
 106        head_name=$(cat "$state_dir"/head-name) &&
 107        onto=$(cat "$state_dir"/onto) &&
 108        # We always write to orig-head, but interactive rebase used to write to
 109        # head. Fall back to reading from head to cover for the case that the
 110        # user upgraded git with an ongoing interactive rebase.
 111        if test -f "$state_dir"/orig-head
 112        then
 113                orig_head=$(cat "$state_dir"/orig-head)
 114        else
 115                orig_head=$(cat "$state_dir"/head)
 116        fi &&
 117        GIT_QUIET=$(cat "$state_dir"/quiet) &&
 118        test -f "$state_dir"/verbose && verbose=t
 119        test -f "$state_dir"/strategy && strategy="$(cat "$state_dir"/strategy)"
 120        test -f "$state_dir"/strategy_opts &&
 121                strategy_opts="$(cat "$state_dir"/strategy_opts)"
 122        test -f "$state_dir"/allow_rerere_autoupdate &&
 123                allow_rerere_autoupdate="$(cat "$state_dir"/allow_rerere_autoupdate)"
 124        test -f "$state_dir"/gpg_sign_opt &&
 125                gpg_sign_opt="$(cat "$state_dir"/gpg_sign_opt)"
 126        test -f "$state_dir"/signoff && {
 127                signoff="$(cat "$state_dir"/signoff)"
 128                force_rebase=t
 129        }
 130}
 131
 132write_basic_state () {
 133        echo "$head_name" > "$state_dir"/head-name &&
 134        echo "$onto" > "$state_dir"/onto &&
 135        echo "$orig_head" > "$state_dir"/orig-head &&
 136        echo "$GIT_QUIET" > "$state_dir"/quiet &&
 137        test t = "$verbose" && : > "$state_dir"/verbose
 138        test -n "$strategy" && echo "$strategy" > "$state_dir"/strategy
 139        test -n "$strategy_opts" && echo "$strategy_opts" > \
 140                "$state_dir"/strategy_opts
 141        test -n "$allow_rerere_autoupdate" && echo "$allow_rerere_autoupdate" > \
 142                "$state_dir"/allow_rerere_autoupdate
 143        test -n "$gpg_sign_opt" && echo "$gpg_sign_opt" > "$state_dir"/gpg_sign_opt
 144        test -n "$signoff" && echo "$signoff" >"$state_dir"/signoff
 145}
 146
 147output () {
 148        case "$verbose" in
 149        '')
 150                output=$("$@" 2>&1 )
 151                status=$?
 152                test $status != 0 && printf "%s\n" "$output"
 153                return $status
 154                ;;
 155        *)
 156                "$@"
 157                ;;
 158        esac
 159}
 160
 161move_to_original_branch () {
 162        case "$head_name" in
 163        refs/*)
 164                message="rebase finished: $head_name onto $onto"
 165                git update-ref -m "$message" \
 166                        $head_name $(git rev-parse HEAD) $orig_head &&
 167                git symbolic-ref \
 168                        -m "rebase finished: returning to $head_name" \
 169                        HEAD $head_name ||
 170                die "$(eval_gettext "Could not move back to \$head_name")"
 171                ;;
 172        esac
 173}
 174
 175apply_autostash () {
 176        if test -f "$state_dir/autostash"
 177        then
 178                stash_sha1=$(cat "$state_dir/autostash")
 179                if git stash apply $stash_sha1 >/dev/null 2>&1
 180                then
 181                        echo "$(gettext 'Applied autostash.')" >&2
 182                else
 183                        git stash store -m "autostash" -q $stash_sha1 ||
 184                        die "$(eval_gettext "Cannot store \$stash_sha1")"
 185                        gettext 'Applying autostash resulted in conflicts.
 186Your changes are safe in the stash.
 187You can run "git stash pop" or "git stash drop" at any time.
 188' >&2
 189                fi
 190        fi
 191}
 192
 193finish_rebase () {
 194        rm -f "$(git rev-parse --git-path REBASE_HEAD)"
 195        apply_autostash &&
 196        { git gc --auto || true; } &&
 197        rm -rf "$state_dir"
 198}
 199
 200run_specific_rebase () {
 201        if [ "$interactive_rebase" = implied ]; then
 202                GIT_EDITOR=:
 203                export GIT_EDITOR
 204                autosquash=
 205        fi
 206        . git-rebase--$type
 207        git_rebase__$type${preserve_merges:+__preserve_merges}
 208        ret=$?
 209        if test $ret -eq 0
 210        then
 211                finish_rebase
 212        elif test $ret -eq 2 # special exit status for rebase -i
 213        then
 214                apply_autostash &&
 215                rm -rf "$state_dir" &&
 216                die "Nothing to do"
 217        fi
 218        exit $ret
 219}
 220
 221run_pre_rebase_hook () {
 222        if test -z "$ok_to_skip_pre_rebase" &&
 223           test -x "$(git rev-parse --git-path hooks/pre-rebase)"
 224        then
 225                "$(git rev-parse --git-path hooks/pre-rebase)" ${1+"$@"} ||
 226                die "$(gettext "The pre-rebase hook refused to rebase.")"
 227        fi
 228}
 229
 230test -f "$apply_dir"/applying &&
 231        die "$(gettext "It looks like 'git am' is in progress. Cannot rebase.")"
 232
 233if test -d "$apply_dir"
 234then
 235        type=am
 236        state_dir="$apply_dir"
 237elif test -d "$merge_dir"
 238then
 239        if test -f "$merge_dir"/interactive
 240        then
 241                type=interactive
 242                interactive_rebase=explicit
 243        else
 244                type=merge
 245        fi
 246        state_dir="$merge_dir"
 247fi
 248test -n "$type" && in_progress=t
 249
 250total_argc=$#
 251while test $# != 0
 252do
 253        case "$1" in
 254        --no-verify)
 255                ok_to_skip_pre_rebase=yes
 256                ;;
 257        --verify)
 258                ok_to_skip_pre_rebase=
 259                ;;
 260        --continue|--skip|--abort|--quit|--edit-todo|--show-current-patch)
 261                test $total_argc -eq 2 || usage
 262                action=${1##--}
 263                ;;
 264        --onto=*)
 265                onto="${1#--onto=}"
 266                ;;
 267        --exec=*)
 268                cmd="${cmd}exec ${1#--exec=}${LF}"
 269                test -z "$interactive_rebase" && interactive_rebase=implied
 270                ;;
 271        --interactive)
 272                interactive_rebase=explicit
 273                ;;
 274        --keep-empty)
 275                keep_empty=yes
 276                ;;
 277        --allow-empty-message)
 278                allow_empty_message=--allow-empty-message
 279                ;;
 280        --no-keep-empty)
 281                keep_empty=
 282                ;;
 283        --preserve-merges)
 284                preserve_merges=t
 285                test -z "$interactive_rebase" && interactive_rebase=implied
 286                ;;
 287        --autosquash)
 288                autosquash=t
 289                ;;
 290        --no-autosquash)
 291                autosquash=
 292                ;;
 293        --fork-point)
 294                fork_point=t
 295                ;;
 296        --no-fork-point)
 297                fork_point=
 298                ;;
 299        --merge)
 300                do_merge=t
 301                ;;
 302        --strategy-option=*)
 303                strategy_opts="$strategy_opts $(git rev-parse --sq-quote "--${1#--strategy-option=}")"
 304                do_merge=t
 305                test -z "$strategy" && strategy=recursive
 306                ;;
 307        --strategy=*)
 308                strategy="${1#--strategy=}"
 309                do_merge=t
 310                ;;
 311        --no-stat)
 312                diffstat=
 313                ;;
 314        --stat)
 315                diffstat=t
 316                ;;
 317        --autostash)
 318                autostash=true
 319                ;;
 320        --no-autostash)
 321                autostash=false
 322                ;;
 323        --verbose)
 324                verbose=t
 325                diffstat=t
 326                GIT_QUIET=
 327                ;;
 328        --quiet)
 329                GIT_QUIET=t
 330                git_am_opt="$git_am_opt -q"
 331                verbose=
 332                diffstat=
 333                ;;
 334        --whitespace=*)
 335                git_am_opt="$git_am_opt --whitespace=${1#--whitespace=}"
 336                case "${1#--whitespace=}" in
 337                fix|strip)
 338                        force_rebase=t
 339                        ;;
 340                esac
 341                ;;
 342        --ignore-whitespace)
 343                git_am_opt="$git_am_opt $1"
 344                ;;
 345        --signoff)
 346                signoff=--signoff
 347                ;;
 348        --no-signoff)
 349                signoff=
 350                ;;
 351        --committer-date-is-author-date|--ignore-date)
 352                git_am_opt="$git_am_opt $1"
 353                force_rebase=t
 354                ;;
 355        -C*)
 356                git_am_opt="$git_am_opt $1"
 357                ;;
 358        --root)
 359                rebase_root=t
 360                ;;
 361        --force-rebase|--no-ff)
 362                force_rebase=t
 363                ;;
 364        --rerere-autoupdate|--no-rerere-autoupdate)
 365                allow_rerere_autoupdate="$1"
 366                ;;
 367        --gpg-sign)
 368                gpg_sign_opt=-S
 369                ;;
 370        --gpg-sign=*)
 371                gpg_sign_opt="-S${1#--gpg-sign=}"
 372                ;;
 373        --)
 374                shift
 375                break
 376                ;;
 377        *)
 378                usage
 379                ;;
 380        esac
 381        shift
 382done
 383test $# -gt 2 && usage
 384
 385if test -n "$action"
 386then
 387        test -z "$in_progress" && die "$(gettext "No rebase in progress?")"
 388        # Only interactive rebase uses detailed reflog messages
 389        if test "$type" = interactive && test "$GIT_REFLOG_ACTION" = rebase
 390        then
 391                GIT_REFLOG_ACTION="rebase -i ($action)"
 392                export GIT_REFLOG_ACTION
 393        fi
 394fi
 395
 396if test "$action" = "edit-todo" && test "$type" != "interactive"
 397then
 398        die "$(gettext "The --edit-todo action can only be used during interactive rebase.")"
 399fi
 400
 401case "$action" in
 402continue)
 403        # Sanity check
 404        git rev-parse --verify HEAD >/dev/null ||
 405                die "$(gettext "Cannot read HEAD")"
 406        git update-index --ignore-submodules --refresh &&
 407        git diff-files --quiet --ignore-submodules || {
 408                echo "$(gettext "You must edit all merge conflicts and then
 409mark them as resolved using git add")"
 410                exit 1
 411        }
 412        read_basic_state
 413        run_specific_rebase
 414        ;;
 415skip)
 416        output git reset --hard HEAD || exit $?
 417        read_basic_state
 418        run_specific_rebase
 419        ;;
 420abort)
 421        git rerere clear
 422        read_basic_state
 423        case "$head_name" in
 424        refs/*)
 425                git symbolic-ref -m "rebase: aborting" HEAD $head_name ||
 426                die "$(eval_gettext "Could not move back to \$head_name")"
 427                ;;
 428        esac
 429        output git reset --hard $orig_head
 430        finish_rebase
 431        exit
 432        ;;
 433quit)
 434        exec rm -rf "$state_dir"
 435        ;;
 436edit-todo)
 437        run_specific_rebase
 438        ;;
 439show-current-patch)
 440        run_specific_rebase
 441        die "BUG: run_specific_rebase is not supposed to return here"
 442        ;;
 443esac
 444
 445# Make sure no rebase is in progress
 446if test -n "$in_progress"
 447then
 448        state_dir_base=${state_dir##*/}
 449        cmd_live_rebase="git rebase (--continue | --abort | --skip)"
 450        cmd_clear_stale_rebase="rm -fr \"$state_dir\""
 451        die "
 452$(eval_gettext 'It seems that there is already a $state_dir_base directory, and
 453I wonder if you are in the middle of another rebase.  If that is the
 454case, please try
 455        $cmd_live_rebase
 456If that is not the case, please
 457        $cmd_clear_stale_rebase
 458and run me again.  I am stopping in case you still have something
 459valuable there.')"
 460fi
 461
 462if test -n "$rebase_root" && test -z "$onto"
 463then
 464        test -z "$interactive_rebase" && interactive_rebase=implied
 465fi
 466
 467if test -n "$keep_empty"
 468then
 469        test -z "$interactive_rebase" && interactive_rebase=implied
 470fi
 471
 472if test -n "$interactive_rebase"
 473then
 474        type=interactive
 475        state_dir="$merge_dir"
 476elif test -n "$do_merge"
 477then
 478        type=merge
 479        state_dir="$merge_dir"
 480else
 481        type=am
 482        state_dir="$apply_dir"
 483fi
 484
 485if test -t 2 && test -z "$GIT_QUIET"
 486then
 487        git_format_patch_opt="$git_format_patch_opt --progress"
 488fi
 489
 490if test -n "$signoff"
 491then
 492        test -n "$preserve_merges" &&
 493                die "$(gettext "error: cannot combine '--signoff' with '--preserve-merges'")"
 494        git_am_opt="$git_am_opt $signoff"
 495        force_rebase=t
 496fi
 497
 498if test -z "$rebase_root"
 499then
 500        case "$#" in
 501        0)
 502                if ! upstream_name=$(git rev-parse --symbolic-full-name \
 503                        --verify -q @{upstream} 2>/dev/null)
 504                then
 505                        . git-parse-remote
 506                        error_on_missing_default_upstream "rebase" "rebase" \
 507                                "against" "git rebase $(gettext '<branch>')"
 508                fi
 509
 510                test "$fork_point" = auto && fork_point=t
 511                ;;
 512        *)      upstream_name="$1"
 513                if test "$upstream_name" = "-"
 514                then
 515                        upstream_name="@{-1}"
 516                fi
 517                shift
 518                ;;
 519        esac
 520        upstream=$(peel_committish "${upstream_name}") ||
 521        die "$(eval_gettext "invalid upstream '\$upstream_name'")"
 522        upstream_arg="$upstream_name"
 523else
 524        if test -z "$onto"
 525        then
 526                empty_tree=$(git hash-object -t tree /dev/null)
 527                onto=$(git commit-tree $empty_tree </dev/null)
 528                squash_onto="$onto"
 529        fi
 530        unset upstream_name
 531        unset upstream
 532        test $# -gt 1 && usage
 533        upstream_arg=--root
 534fi
 535
 536# Make sure the branch to rebase onto is valid.
 537onto_name=${onto-"$upstream_name"}
 538case "$onto_name" in
 539*...*)
 540        if      left=${onto_name%...*} right=${onto_name#*...} &&
 541                onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
 542        then
 543                case "$onto" in
 544                ?*"$LF"?*)
 545                        die "$(eval_gettext "\$onto_name: there are more than one merge bases")"
 546                        ;;
 547                '')
 548                        die "$(eval_gettext "\$onto_name: there is no merge base")"
 549                        ;;
 550                esac
 551        else
 552                die "$(eval_gettext "\$onto_name: there is no merge base")"
 553        fi
 554        ;;
 555*)
 556        onto=$(peel_committish "$onto_name") ||
 557        die "$(eval_gettext "Does not point to a valid commit: \$onto_name")"
 558        ;;
 559esac
 560
 561# If the branch to rebase is given, that is the branch we will rebase
 562# $branch_name -- branch/commit being rebased, or HEAD (already detached)
 563# $orig_head -- commit object name of tip of the branch before rebasing
 564# $head_name -- refs/heads/<that-branch> or "detached HEAD"
 565switch_to=
 566case "$#" in
 5671)
 568        # Is it "rebase other $branchname" or "rebase other $commit"?
 569        branch_name="$1"
 570        switch_to="$1"
 571
 572        # Is it a local branch?
 573        if git show-ref --verify --quiet -- "refs/heads/$branch_name" &&
 574           orig_head=$(git rev-parse -q --verify "refs/heads/$branch_name")
 575        then
 576                head_name="refs/heads/$branch_name"
 577        # If not is it a valid ref (branch or commit)?
 578        elif orig_head=$(git rev-parse -q --verify "$branch_name")
 579        then
 580                head_name="detached HEAD"
 581
 582        else
 583                die "$(eval_gettext "fatal: no such branch/commit '\$branch_name'")"
 584        fi
 585        ;;
 5860)
 587        # Do not need to switch branches, we are already on it.
 588        if branch_name=$(git symbolic-ref -q HEAD)
 589        then
 590                head_name=$branch_name
 591                branch_name=$(expr "z$branch_name" : 'zrefs/heads/\(.*\)')
 592        else
 593                head_name="detached HEAD"
 594                branch_name=HEAD
 595        fi
 596        orig_head=$(git rev-parse --verify HEAD) || exit
 597        ;;
 598*)
 599        die "BUG: unexpected number of arguments left to parse"
 600        ;;
 601esac
 602
 603if test "$fork_point" = t
 604then
 605        new_upstream=$(git merge-base --fork-point "$upstream_name" \
 606                        "${switch_to:-HEAD}")
 607        if test -n "$new_upstream"
 608        then
 609                restrict_revision=$new_upstream
 610        fi
 611fi
 612
 613if test "$autostash" = true && ! (require_clean_work_tree) 2>/dev/null
 614then
 615        stash_sha1=$(git stash create "autostash") ||
 616        die "$(gettext 'Cannot autostash')"
 617
 618        mkdir -p "$state_dir" &&
 619        echo $stash_sha1 >"$state_dir/autostash" &&
 620        stash_abbrev=$(git rev-parse --short $stash_sha1) &&
 621        echo "$(eval_gettext 'Created autostash: $stash_abbrev')" &&
 622        git reset --hard
 623fi
 624
 625require_clean_work_tree "rebase" "$(gettext "Please commit or stash them.")"
 626
 627# Now we are rebasing commits $upstream..$orig_head (or with --root,
 628# everything leading up to $orig_head) on top of $onto
 629
 630# Check if we are already based on $onto with linear history,
 631# but this should be done only when upstream and onto are the same
 632# and if this is not an interactive rebase.
 633mb=$(git merge-base "$onto" "$orig_head")
 634if test "$type" != interactive && test "$upstream" = "$onto" &&
 635        test "$mb" = "$onto" && test -z "$restrict_revision" &&
 636        # linear history?
 637        ! (git rev-list --parents "$onto".."$orig_head" | sane_grep " .* ") > /dev/null
 638then
 639        if test -z "$force_rebase"
 640        then
 641                # Lazily switch to the target branch if needed...
 642                test -z "$switch_to" ||
 643                GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to" \
 644                        git checkout -q "$switch_to" --
 645                if test "$branch_name" = "HEAD" &&
 646                         ! git symbolic-ref -q HEAD
 647                then
 648                        say "$(eval_gettext "HEAD is up to date.")"
 649                else
 650                        say "$(eval_gettext "Current branch \$branch_name is up to date.")"
 651                fi
 652                finish_rebase
 653                exit 0
 654        else
 655                if test "$branch_name" = "HEAD" &&
 656                         ! git symbolic-ref -q HEAD
 657                then
 658                        say "$(eval_gettext "HEAD is up to date, rebase forced.")"
 659                else
 660                        say "$(eval_gettext "Current branch \$branch_name is up to date, rebase forced.")"
 661                fi
 662        fi
 663fi
 664
 665# If a hook exists, give it a chance to interrupt
 666run_pre_rebase_hook "$upstream_arg" "$@"
 667
 668if test -n "$diffstat"
 669then
 670        if test -n "$verbose"
 671        then
 672                echo "$(eval_gettext "Changes from \$mb to \$onto:")"
 673        fi
 674        # We want color (if set), but no pager
 675        GIT_PAGER='' git diff --stat --summary "$mb" "$onto"
 676fi
 677
 678test "$type" = interactive && run_specific_rebase
 679
 680# Detach HEAD and reset the tree
 681say "$(gettext "First, rewinding head to replay your work on top of it...")"
 682
 683GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name" \
 684        git checkout -q "$onto^0" || die "could not detach HEAD"
 685git update-ref ORIG_HEAD $orig_head
 686
 687# If the $onto is a proper descendant of the tip of the branch, then
 688# we just fast-forwarded.
 689if test "$mb" = "$orig_head"
 690then
 691        say "$(eval_gettext "Fast-forwarded \$branch_name to \$onto_name.")"
 692        move_to_original_branch
 693        finish_rebase
 694        exit 0
 695fi
 696
 697if test -n "$rebase_root"
 698then
 699        revisions="$onto..$orig_head"
 700else
 701        revisions="${restrict_revision-$upstream}..$orig_head"
 702fi
 703
 704run_specific_rebase