git-rebase.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Junio C Hamano.
   4 #
   5
   6 SUBDIRECTORY_OK=Yes
   7 OPTIONS_KEEPDASHDASH=
   8 OPTIONS_STUCKLONG=t
   9 OPTIONS_SPEC="\
  10 git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] [<upstream>] [<branch>]
  11 git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] --root [<branch>]
  12 git rebase --continue | --abort | --skip | --edit-todo
  13 --
  14  Available options are
  15 v,verbose!         display a diffstat of what changed upstream
  16 q,quiet!           be quiet. implies --no-stat
  17 autostash          automatically stash/stash pop before and after
  18 fork-point         use 'merge-base --fork-point' to refine upstream
  19 onto=!             rebase onto given branch instead of upstream
  20 r,rebase-merges!   try to rebase merges instead of skipping them
  21 p,preserve-merges! try to recreate merges instead of ignoring them
  22 s,strategy=!       use the given merge strategy
  23 no-ff!             cherry-pick all commits, even if unchanged
  24 m,merge!           use merging strategies to rebase
  25 i,interactive!     let the user edit the list of commits to rebase
  26 x,exec=!           add exec lines after each commit of the editable list
  27 k,keep-empty       preserve empty commits during rebase
  28 allow-empty-message allow rebasing commits with empty messages
  29 f,force-rebase!    force rebase even if branch is up to date
  30 X,strategy-option=! pass the argument through to the merge strategy
  31 stat!              display a diffstat of what changed upstream
  32 n,no-stat!         do not show diffstat of what changed upstream
  33 verify             allow pre-rebase hook to run
  34 rerere-autoupdate  allow rerere to update index with resolved conflicts
  35 root!              rebase all reachable commits up to the root(s)
  36 autosquash         move commits that begin with squash!/fixup! under -i
  37 committer-date-is-author-date! passed to 'git am'
  38 ignore-date!       passed to 'git am'
  39 signoff            passed to 'git am'
  40 whitespace=!       passed to 'git apply'
  41 ignore-whitespace! passed to 'git apply'
  42 C=!                passed to 'git apply'
  43 S,gpg-sign?        GPG-sign commits
  44  Actions:
  45 continue!          continue
  46 abort!             abort and check out the original branch
  47 skip!              skip current patch and continue
  48 edit-todo!         edit the todo list during an interactive rebase
  49 quit!              abort but keep HEAD where it is
  50 show-current-patch! show the patch file being applied or merged
  51 "
  52 . git-sh-setup
  53 set_reflog_action rebase
  54 require_work_tree_exists
  55 cd_to_toplevel
  56
  57 LF='
  58 '
  59 ok_to_skip_pre_rebase=
  60 resolvemsg="
  61 $(gettext 'Resolve all conflicts manually, mark them as resolved with
  62 "git add/rm <conflicted_files>", then run "git rebase --continue".
  63 You can instead skip this commit: run "git rebase --skip".
  64 To abort and get back to the state before "git rebase", run "git rebase --abort".')
  65 "
  66 squash_onto=
  67 unset onto
  68 unset restrict_revision
  69 cmd=
  70 strategy=
  71 strategy_opts=
  72 do_merge=
  73 merge_dir="$GIT_DIR"/rebase-merge
  74 apply_dir="$GIT_DIR"/rebase-apply
  75 verbose=
  76 diffstat=
  77 test "$(git config --bool rebase.stat)" = true && diffstat=t
  78 autostash="$(git config --bool rebase.autostash || echo false)"
  79 fork_point=auto
  80 git_am_opt=
  81 git_format_patch_opt=
  82 rebase_root=
  83 force_rebase=
  84 allow_rerere_autoupdate=
  85 # Non-empty if a rebase was in progress when 'git rebase' was invoked
  86 in_progress=
  87 # One of {am, merge, interactive}
  88 type=
  89 # One of {"$GIT_DIR"/rebase-apply, "$GIT_DIR"/rebase-merge}
  90 state_dir=
  91 # One of {'', continue, skip, abort}, as parsed from command line
  92 action=
  93 rebase_merges=
  94 preserve_merges=
  95 autosquash=
  96 keep_empty=
  97 allow_empty_message=
  98 signoff=
  99 test "$(git config --bool rebase.autosquash)" = "true" && autosquash=t
 100 case "$(git config --bool commit.gpgsign)" in
 101 true)   gpg_sign_opt=-S ;;
 102 *)      gpg_sign_opt= ;;
 103 esac
 104
 105 read_basic_state () {
 106         test -f "$state_dir/head-name" &&
 107         test -f "$state_dir/onto" &&
 108         head_name=$(cat "$state_dir"/head-name) &&
 109         onto=$(cat "$state_dir"/onto) &&
 110         # We always write to orig-head, but interactive rebase used to write to
 111         # head. Fall back to reading from head to cover for the case that the
 112         # user upgraded git with an ongoing interactive rebase.
 113         if test -f "$state_dir"/orig-head
 114         then
 115                 orig_head=$(cat "$state_dir"/orig-head)
 116         else
 117                 orig_head=$(cat "$state_dir"/head)
 118         fi &&
 119         GIT_QUIET=$(cat "$state_dir"/quiet) &&
 120         test -f "$state_dir"/verbose && verbose=t
 121         test -f "$state_dir"/strategy && strategy="$(cat "$state_dir"/strategy)"
 122         test -f "$state_dir"/strategy_opts &&
 123                 strategy_opts="$(cat "$state_dir"/strategy_opts)"
 124         test -f "$state_dir"/allow_rerere_autoupdate &&
 125                 allow_rerere_autoupdate="$(cat "$state_dir"/allow_rerere_autoupdate)"
 126         test -f "$state_dir"/gpg_sign_opt &&
 127                 gpg_sign_opt="$(cat "$state_dir"/gpg_sign_opt)"
 128         test -f "$state_dir"/signoff && {
 129                 signoff="$(cat "$state_dir"/signoff)"
 130                 force_rebase=t
 131         }
 132 }
 133
 134 write_basic_state () {
 135         echo "$head_name" > "$state_dir"/head-name &&
 136         echo "$onto" > "$state_dir"/onto &&
 137         echo "$orig_head" > "$state_dir"/orig-head &&
 138         echo "$GIT_QUIET" > "$state_dir"/quiet &&
 139         test t = "$verbose" && : > "$state_dir"/verbose
 140         test -n "$strategy" && echo "$strategy" > "$state_dir"/strategy
 141         test -n "$strategy_opts" && echo "$strategy_opts" > \
 142                 "$state_dir"/strategy_opts
 143         test -n "$allow_rerere_autoupdate" && echo "$allow_rerere_autoupdate" > \
 144                 "$state_dir"/allow_rerere_autoupdate
 145         test -n "$gpg_sign_opt" && echo "$gpg_sign_opt" > "$state_dir"/gpg_sign_opt
 146         test -n "$signoff" && echo "$signoff" >"$state_dir"/signoff
 147 }
 148
 149 output () {
 150         case "$verbose" in
 151         '')
 152                 output=$("$@" 2>&1 )
 153                 status=$?
 154                 test $status != 0 && printf "%s\n" "$output"
 155                 return $status
 156                 ;;
 157         *)
 158                 "$@"
 159                 ;;
 160         esac
 161 }
 162
 163 move_to_original_branch () {
 164         case "$head_name" in
 165         refs/*)
 166                 message="rebase finished: $head_name onto $onto"
 167                 git update-ref -m "$message" \
 168                         $head_name $(git rev-parse HEAD) $orig_head &&
 169                 git symbolic-ref \
 170                         -m "rebase finished: returning to $head_name" \
 171                         HEAD $head_name ||
 172                 die "$(eval_gettext "Could not move back to \$head_name")"
 173                 ;;
 174         esac
 175 }
 176
 177 apply_autostash () {
 178         if test -f "$state_dir/autostash"
 179         then
 180                 stash_sha1=$(cat "$state_dir/autostash")
 181                 if git stash apply $stash_sha1 >/dev/null 2>&1
 182                 then
 183                         echo "$(gettext 'Applied autostash.')" >&2
 184                 else
 185                         git stash store -m "autostash" -q $stash_sha1 ||
 186                         die "$(eval_gettext "Cannot store \$stash_sha1")"
 187                         gettext 'Applying autostash resulted in conflicts.
 188 Your changes are safe in the stash.
 189 You can run "git stash pop" or "git stash drop" at any time.
 190 ' >&2
 191                 fi
 192         fi
 193 }
 194
 195 finish_rebase () {
 196         rm -f "$(git rev-parse --git-path REBASE_HEAD)"
 197         apply_autostash &&
 198         { git gc --auto || true; } &&
 199         rm -rf "$state_dir"
 200 }
 201
 202 run_specific_rebase () {
 203         if [ "$interactive_rebase" = implied ]; then
 204                 GIT_EDITOR=:
 205                 export GIT_EDITOR
 206                 autosquash=
 207         fi
 208         . git-rebase--$type
 209         git_rebase__$type${preserve_merges:+__preserve_merges}
 210         ret=$?
 211         if test $ret -eq 0
 212         then
 213                 finish_rebase
 214         elif test $ret -eq 2 # special exit status for rebase -i
 215         then
 216                 apply_autostash &&
 217                 rm -rf "$state_dir" &&
 218                 die "Nothing to do"
 219         fi
 220         exit $ret
 221 }
 222
 223 run_pre_rebase_hook () {
 224         if test -z "$ok_to_skip_pre_rebase" &&
 225            test -x "$(git rev-parse --git-path hooks/pre-rebase)"
 226         then
 227                 "$(git rev-parse --git-path hooks/pre-rebase)" ${1+"$@"} ||
 228                 die "$(gettext "The pre-rebase hook refused to rebase.")"
 229         fi
 230 }
 231
 232 test -f "$apply_dir"/applying &&
 233         die "$(gettext "It looks like 'git am' is in progress. Cannot rebase.")"
 234
 235 if test -d "$apply_dir"
 236 then
 237         type=am
 238         state_dir="$apply_dir"
 239 elif test -d "$merge_dir"
 240 then
 241         if test -f "$merge_dir"/interactive
 242         then
 243                 type=interactive
 244                 interactive_rebase=explicit
 245         else
 246                 type=merge
 247         fi
 248         state_dir="$merge_dir"
 249 fi
 250 test -n "$type" && in_progress=t
 251
 252 total_argc=$#
 253 while test $# != 0
 254 do
 255         case "$1" in
 256         --no-verify)
 257                 ok_to_skip_pre_rebase=yes
 258                 ;;
 259         --verify)
 260                 ok_to_skip_pre_rebase=
 261                 ;;
 262         --continue|--skip|--abort|--quit|--edit-todo|--show-current-patch)
 263                 test $total_argc -eq 2 || usage
 264                 action=${1##--}
 265                 ;;
 266         --onto=*)
 267                 onto="${1#--onto=}"
 268                 ;;
 269         --exec=*)
 270                 cmd="${cmd}exec ${1#--exec=}${LF}"
 271                 test -z "$interactive_rebase" && interactive_rebase=implied
 272                 ;;
 273         --interactive)
 274                 interactive_rebase=explicit
 275                 ;;
 276         --keep-empty)
 277                 keep_empty=yes
 278                 ;;
 279         --allow-empty-message)
 280                 allow_empty_message=--allow-empty-message
 281                 ;;
 282         --no-keep-empty)
 283                 keep_empty=
 284                 ;;
 285         --rebase-merges)
 286                 rebase_merges=t
 287                 test -z "$interactive_rebase" && interactive_rebase=implied
 288                 ;;
 289         --preserve-merges)
 290                 preserve_merges=t
 291                 test -z "$interactive_rebase" && interactive_rebase=implied
 292                 ;;
 293         --autosquash)
 294                 autosquash=t
 295                 ;;
 296         --no-autosquash)
 297                 autosquash=
 298                 ;;
 299         --fork-point)
 300                 fork_point=t
 301                 ;;
 302         --no-fork-point)
 303                 fork_point=
 304                 ;;
 305         --merge)
 306                 do_merge=t
 307                 ;;
 308         --strategy-option=*)
 309                 strategy_opts="$strategy_opts $(git rev-parse --sq-quote "--${1#--strategy-option=}")"
 310                 do_merge=t
 311                 test -z "$strategy" && strategy=recursive
 312                 ;;
 313         --strategy=*)
 314                 strategy="${1#--strategy=}"
 315                 do_merge=t
 316                 ;;
 317         --no-stat)
 318                 diffstat=
 319                 ;;
 320         --stat)
 321                 diffstat=t
 322                 ;;
 323         --autostash)
 324                 autostash=true
 325                 ;;
 326         --no-autostash)
 327                 autostash=false
 328                 ;;
 329         --verbose)
 330                 verbose=t
 331                 diffstat=t
 332                 GIT_QUIET=
 333                 ;;
 334         --quiet)
 335                 GIT_QUIET=t
 336                 git_am_opt="$git_am_opt -q"
 337                 verbose=
 338                 diffstat=
 339                 ;;
 340         --whitespace=*)
 341                 git_am_opt="$git_am_opt --whitespace=${1#--whitespace=}"
 342                 case "${1#--whitespace=}" in
 343                 fix|strip)
 344                         force_rebase=t
 345                         ;;
 346                 esac
 347                 ;;
 348         --ignore-whitespace)
 349                 git_am_opt="$git_am_opt $1"
 350                 ;;
 351         --signoff)
 352                 signoff=--signoff
 353                 ;;
 354         --no-signoff)
 355                 signoff=
 356                 ;;
 357         --committer-date-is-author-date|--ignore-date)
 358                 git_am_opt="$git_am_opt $1"
 359                 force_rebase=t
 360                 ;;
 361         -C*)
 362                 git_am_opt="$git_am_opt $1"
 363                 ;;
 364         --root)
 365                 rebase_root=t
 366                 ;;
 367         --force-rebase|--no-ff)
 368                 force_rebase=t
 369                 ;;
 370         --rerere-autoupdate|--no-rerere-autoupdate)
 371                 allow_rerere_autoupdate="$1"
 372                 ;;
 373         --gpg-sign)
 374                 gpg_sign_opt=-S
 375                 ;;
 376         --gpg-sign=*)
 377                 gpg_sign_opt="-S${1#--gpg-sign=}"
 378                 ;;
 379         --)
 380                 shift
 381                 break
 382                 ;;
 383         *)
 384                 usage
 385                 ;;
 386         esac
 387         shift
 388 done
 389 test $# -gt 2 && usage
 390
 391 if test -n "$action"
 392 then
 393         test -z "$in_progress" && die "$(gettext "No rebase in progress?")"
 394         # Only interactive rebase uses detailed reflog messages
 395         if test "$type" = interactive && test "$GIT_REFLOG_ACTION" = rebase
 396         then
 397                 GIT_REFLOG_ACTION="rebase -i ($action)"
 398                 export GIT_REFLOG_ACTION
 399         fi
 400 fi
 401
 402 if test "$action" = "edit-todo" && test "$type" != "interactive"
 403 then
 404         die "$(gettext "The --edit-todo action can only be used during interactive rebase.")"
 405 fi
 406
 407 case "$action" in
 408 continue)
 409         # Sanity check
 410         git rev-parse --verify HEAD >/dev/null ||
 411                 die "$(gettext "Cannot read HEAD")"
 412         git update-index --ignore-submodules --refresh &&
 413         git diff-files --quiet --ignore-submodules || {
 414                 echo "$(gettext "You must edit all merge conflicts and then
 415 mark them as resolved using git add")"
 416                 exit 1
 417         }
 418         read_basic_state
 419         run_specific_rebase
 420         ;;
 421 skip)
 422         output git reset --hard HEAD || exit $?
 423         read_basic_state
 424         run_specific_rebase
 425         ;;
 426 abort)
 427         git rerere clear
 428         read_basic_state
 429         case "$head_name" in
 430         refs/*)
 431                 git symbolic-ref -m "rebase: aborting" HEAD $head_name ||
 432                 die "$(eval_gettext "Could not move back to \$head_name")"
 433                 ;;
 434         esac
 435         output git reset --hard $orig_head
 436         finish_rebase
 437         exit
 438         ;;
 439 quit)
 440         exec rm -rf "$state_dir"
 441         ;;
 442 edit-todo)
 443         run_specific_rebase
 444         ;;
 445 show-current-patch)
 446         run_specific_rebase
 447         die "BUG: run_specific_rebase is not supposed to return here"
 448         ;;
 449 esac
 450
 451 # Make sure no rebase is in progress
 452 if test -n "$in_progress"
 453 then
 454         state_dir_base=${state_dir##*/}
 455         cmd_live_rebase="git rebase (--continue | --abort | --skip)"
 456         cmd_clear_stale_rebase="rm -fr \"$state_dir\""
 457         die "
 458 $(eval_gettext 'It seems that there is already a $state_dir_base directory, and
 459 I wonder if you are in the middle of another rebase.  If that is the
 460 case, please try
 461         $cmd_live_rebase
 462 If that is not the case, please
 463         $cmd_clear_stale_rebase
 464 and run me again.  I am stopping in case you still have something
 465 valuable there.')"
 466 fi
 467
 468 if test -n "$rebase_root" && test -z "$onto"
 469 then
 470         test -z "$interactive_rebase" && interactive_rebase=implied
 471 fi
 472
 473 if test -n "$keep_empty"
 474 then
 475         test -z "$interactive_rebase" && interactive_rebase=implied
 476 fi
 477
 478 if test -n "$interactive_rebase"
 479 then
 480         type=interactive
 481         state_dir="$merge_dir"
 482 elif test -n "$do_merge"
 483 then
 484         type=merge
 485         state_dir="$merge_dir"
 486 else
 487         type=am
 488         state_dir="$apply_dir"
 489 fi
 490
 491 if test -t 2 && test -z "$GIT_QUIET"
 492 then
 493         git_format_patch_opt="$git_format_patch_opt --progress"
 494 fi
 495
 496 if test -n "$signoff"
 497 then
 498         test -n "$preserve_merges" &&
 499                 die "$(gettext "error: cannot combine '--signoff' with '--preserve-merges'")"
 500         git_am_opt="$git_am_opt $signoff"
 501         force_rebase=t
 502 fi
 503
 504 if test -z "$rebase_root"
 505 then
 506         case "$#" in
 507         0)
 508                 if ! upstream_name=$(git rev-parse --symbolic-full-name \
 509                         --verify -q @{upstream} 2>/dev/null)
 510                 then
 511                         . git-parse-remote
 512                         error_on_missing_default_upstream "rebase" "rebase" \
 513                                 "against" "git rebase $(gettext '<branch>')"
 514                 fi
 515
 516                 test "$fork_point" = auto && fork_point=t
 517                 ;;
 518         *)      upstream_name="$1"
 519                 if test "$upstream_name" = "-"
 520                 then
 521                         upstream_name="@{-1}"
 522                 fi
 523                 shift
 524                 ;;
 525         esac
 526         upstream=$(peel_committish "${upstream_name}") ||
 527         die "$(eval_gettext "invalid upstream '\$upstream_name'")"
 528         upstream_arg="$upstream_name"
 529 else
 530         if test -z "$onto"
 531         then
 532                 empty_tree=$(git hash-object -t tree /dev/null)
 533                 onto=$(git commit-tree $empty_tree </dev/null)
 534                 squash_onto="$onto"
 535         fi
 536         unset upstream_name
 537         unset upstream
 538         test $# -gt 1 && usage
 539         upstream_arg=--root
 540 fi
 541
 542 # Make sure the branch to rebase onto is valid.
 543 onto_name=${onto-"$upstream_name"}
 544 case "$onto_name" in
 545 *...*)
 546         if      left=${onto_name%...*} right=${onto_name#*...} &&
 547                 onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
 548         then
 549                 case "$onto" in
 550                 ?*"$LF"?*)
 551                         die "$(eval_gettext "\$onto_name: there are more than one merge bases")"
 552                         ;;
 553                 '')
 554                         die "$(eval_gettext "\$onto_name: there is no merge base")"
 555                         ;;
 556                 esac
 557         else
 558                 die "$(eval_gettext "\$onto_name: there is no merge base")"
 559         fi
 560         ;;
 561 *)
 562         onto=$(peel_committish "$onto_name") ||
 563         die "$(eval_gettext "Does not point to a valid commit: \$onto_name")"
 564         ;;
 565 esac
 566
 567 # If the branch to rebase is given, that is the branch we will rebase
 568 # $branch_name -- branch/commit being rebased, or HEAD (already detached)
 569 # $orig_head -- commit object name of tip of the branch before rebasing
 570 # $head_name -- refs/heads/<that-branch> or "detached HEAD"
 571 switch_to=
 572 case "$#" in
 573 1)
 574         # Is it "rebase other $branchname" or "rebase other $commit"?
 575         branch_name="$1"
 576         switch_to="$1"
 577
 578         # Is it a local branch?
 579         if git show-ref --verify --quiet -- "refs/heads/$branch_name" &&
 580            orig_head=$(git rev-parse -q --verify "refs/heads/$branch_name")
 581         then
 582                 head_name="refs/heads/$branch_name"
 583         # If not is it a valid ref (branch or commit)?
 584         elif orig_head=$(git rev-parse -q --verify "$branch_name")
 585         then
 586                 head_name="detached HEAD"
 587
 588         else
 589                 die "$(eval_gettext "fatal: no such branch/commit '\$branch_name'")"
 590         fi
 591         ;;
 592 0)
 593         # Do not need to switch branches, we are already on it.
 594         if branch_name=$(git symbolic-ref -q HEAD)
 595         then
 596                 head_name=$branch_name
 597                 branch_name=$(expr "z$branch_name" : 'zrefs/heads/\(.*\)')
 598         else
 599                 head_name="detached HEAD"
 600                 branch_name=HEAD
 601         fi
 602         orig_head=$(git rev-parse --verify HEAD) || exit
 603         ;;
 604 *)
 605         die "BUG: unexpected number of arguments left to parse"
 606         ;;
 607 esac
 608
 609 if test "$fork_point" = t
 610 then
 611         new_upstream=$(git merge-base --fork-point "$upstream_name" \
 612                         "${switch_to:-HEAD}")
 613         if test -n "$new_upstream"
 614         then
 615                 restrict_revision=$new_upstream
 616         fi
 617 fi
 618
 619 if test "$autostash" = true && ! (require_clean_work_tree) 2>/dev/null
 620 then
 621         stash_sha1=$(git stash create "autostash") ||
 622         die "$(gettext 'Cannot autostash')"
 623
 624         mkdir -p "$state_dir" &&
 625         echo $stash_sha1 >"$state_dir/autostash" &&
 626         stash_abbrev=$(git rev-parse --short $stash_sha1) &&
 627         echo "$(eval_gettext 'Created autostash: $stash_abbrev')" &&
 628         git reset --hard
 629 fi
 630
 631 require_clean_work_tree "rebase" "$(gettext "Please commit or stash them.")"
 632
 633 # Now we are rebasing commits $upstream..$orig_head (or with --root,
 634 # everything leading up to $orig_head) on top of $onto
 635
 636 # Check if we are already based on $onto with linear history,
 637 # but this should be done only when upstream and onto are the same
 638 # and if this is not an interactive rebase.
 639 mb=$(git merge-base "$onto" "$orig_head")
 640 if test "$type" != interactive && test "$upstream" = "$onto" &&
 641         test "$mb" = "$onto" && test -z "$restrict_revision" &&
 642         # linear history?
 643         ! (git rev-list --parents "$onto".."$orig_head" | sane_grep " .* ") > /dev/null
 644 then
 645         if test -z "$force_rebase"
 646         then
 647                 # Lazily switch to the target branch if needed...
 648                 test -z "$switch_to" ||
 649                 GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to" \
 650                         git checkout -q "$switch_to" --
 651                 if test "$branch_name" = "HEAD" &&
 652                          ! git symbolic-ref -q HEAD
 653                 then
 654                         say "$(eval_gettext "HEAD is up to date.")"
 655                 else
 656                         say "$(eval_gettext "Current branch \$branch_name is up to date.")"
 657                 fi
 658                 finish_rebase
 659                 exit 0
 660         else
 661                 if test "$branch_name" = "HEAD" &&
 662                          ! git symbolic-ref -q HEAD
 663                 then
 664                         say "$(eval_gettext "HEAD is up to date, rebase forced.")"
 665                 else
 666                         say "$(eval_gettext "Current branch \$branch_name is up to date, rebase forced.")"
 667                 fi
 668         fi
 669 fi
 670
 671 # If a hook exists, give it a chance to interrupt
 672 run_pre_rebase_hook "$upstream_arg" "$@"
 673
 674 if test -n "$diffstat"
 675 then
 676         if test -n "$verbose"
 677         then
 678                 echo "$(eval_gettext "Changes from \$mb to \$onto:")"
 679         fi
 680         # We want color (if set), but no pager
 681         GIT_PAGER='' git diff --stat --summary "$mb" "$onto"
 682 fi
 683
 684 test "$type" = interactive && run_specific_rebase
 685
 686 # Detach HEAD and reset the tree
 687 say "$(gettext "First, rewinding head to replay your work on top of it...")"
 688
 689 GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name" \
 690         git checkout -q "$onto^0" || die "could not detach HEAD"
 691 git update-ref ORIG_HEAD $orig_head
 692
 693 # If the $onto is a proper descendant of the tip of the branch, then
 694 # we just fast-forwarded.
 695 if test "$mb" = "$orig_head"
 696 then
 697         say "$(eval_gettext "Fast-forwarded \$branch_name to \$onto_name.")"
 698         move_to_original_branch
 699         finish_rebase
 700         exit 0
 701 fi
 702
 703 if test -n "$rebase_root"
 704 then
 705         revisions="$onto..$orig_head"
 706 else
 707         revisions="${restrict_revision-$upstream}..$orig_head"
 708 fi
 709
 710 run_specific_rebase