git.oblomov.eu Git - git/blob - git-rebase--interactive.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2006 Johannes E. Schindelin
   4
   5 # SHORT DESCRIPTION
   6 #
   7 # This script makes it easy to fix up commits in the middle of a series,
   8 # and rearrange commits.
   9 #
  10 # The original idea comes from Eric W. Biederman, in
  11 # http://article.gmane.org/gmane.comp.version-control.git/22407
  12
  13 OPTIONS_KEEPDASHDASH=
  14 OPTIONS_SPEC="\
  15 git-rebase [-i] [options] [--] <upstream> [<branch>]
  16 git-rebase [-i] (--continue | --abort | --skip)
  17 --
  18  Available options are
  19 v,verbose          display a diffstat of what changed upstream
  20 onto=              rebase onto given branch instead of upstream
  21 p,preserve-merges  try to recreate merges instead of ignoring them
  22 s,strategy=        use the given merge strategy
  23 m,merge            always used (no-op)
  24 i,interactive      always used (no-op)
  25  Actions:
  26 continue           continue rebasing process
  27 abort              abort rebasing process and restore original branch
  28 skip               skip current patch and continue rebasing process
  29 no-verify          override pre-rebase hook from stopping the operation
  30 "
  31
  32 . git-sh-setup
  33 require_work_tree
  34
  35 DOTEST="$GIT_DIR/rebase-merge"
  36 TODO="$DOTEST"/git-rebase-todo
  37 DONE="$DOTEST"/done
  38 MSG="$DOTEST"/message
  39 SQUASH_MSG="$DOTEST"/message-squash
  40 REWRITTEN="$DOTEST"/rewritten
  41 DROPPED="$DOTEST"/dropped
  42 PRESERVE_MERGES=
  43 STRATEGY=
  44 ONTO=
  45 VERBOSE=
  46 OK_TO_SKIP_PRE_REBASE=
  47
  48 GIT_CHERRY_PICK_HELP="  After resolving the conflicts,
  49 mark the corrected paths with 'git add <paths>', and
  50 run 'git rebase --continue'"
  51 export GIT_CHERRY_PICK_HELP
  52
  53 warn () {
  54         echo "$*" >&2
  55 }
  56
  57 output () {
  58         case "$VERBOSE" in
  59         '')
  60                 output=$("$@" 2>&1 )
  61                 status=$?
  62                 test $status != 0 && printf "%s\n" "$output"
  63                 return $status
  64                 ;;
  65         *)
  66                 "$@"
  67                 ;;
  68         esac
  69 }
  70
  71 run_pre_rebase_hook () {
  72         if test -z "$OK_TO_SKIP_PRE_REBASE" &&
  73            test -x "$GIT_DIR/hooks/pre-rebase"
  74         then
  75                 "$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || {
  76                         echo >&2 "The pre-rebase hook refused to rebase."
  77                         exit 1
  78                 }
  79         fi
  80 }
  81
  82 require_clean_work_tree () {
  83         # test if working tree is dirty
  84         git rev-parse --verify HEAD > /dev/null &&
  85         git update-index --ignore-submodules --refresh &&
  86         git diff-files --quiet --ignore-submodules &&
  87         git diff-index --cached --quiet HEAD --ignore-submodules -- ||
  88         die "Working tree is dirty"
  89 }
  90
  91 ORIG_REFLOG_ACTION="$GIT_REFLOG_ACTION"
  92
  93 comment_for_reflog () {
  94         case "$ORIG_REFLOG_ACTION" in
  95         ''|rebase*)
  96                 GIT_REFLOG_ACTION="rebase -i ($1)"
  97                 export GIT_REFLOG_ACTION
  98                 ;;
  99         esac
 100 }
 101
 102 last_count=
 103 mark_action_done () {
 104         sed -e 1q < "$TODO" >> "$DONE"
 105         sed -e 1d < "$TODO" >> "$TODO".new
 106         mv -f "$TODO".new "$TODO"
 107         count=$(grep -c '^[^#]' < "$DONE")
 108         total=$(($count+$(grep -c '^[^#]' < "$TODO")))
 109         if test "$last_count" != "$count"
 110         then
 111                 last_count=$count
 112                 printf "Rebasing (%d/%d)\r" $count $total
 113                 test -z "$VERBOSE" || echo
 114         fi
 115 }
 116
 117 make_patch () {
 118         parent_sha1=$(git rev-parse --verify "$1"^) ||
 119                 die "Cannot get patch for $1^"
 120         git diff-tree -p "$parent_sha1".."$1" > "$DOTEST"/patch
 121         test -f "$DOTEST"/message ||
 122                 git cat-file commit "$1" | sed "1,/^$/d" > "$DOTEST"/message
 123         test -f "$DOTEST"/author-script ||
 124                 get_author_ident_from_commit "$1" > "$DOTEST"/author-script
 125 }
 126
 127 die_with_patch () {
 128         make_patch "$1"
 129         git rerere
 130         die "$2"
 131 }
 132
 133 die_abort () {
 134         rm -rf "$DOTEST"
 135         die "$1"
 136 }
 137
 138 has_action () {
 139         grep '^[^#]' "$1" >/dev/null
 140 }
 141
 142 pick_one () {
 143         no_ff=
 144         case "$1" in -n) sha1=$2; no_ff=t ;; *) sha1=$1 ;; esac
 145         output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1"
 146         test -d "$REWRITTEN" &&
 147                 pick_one_preserving_merges "$@" && return
 148         parent_sha1=$(git rev-parse --verify $sha1^) ||
 149                 die "Could not get the parent of $sha1"
 150         current_sha1=$(git rev-parse --verify HEAD)
 151         if test "$no_ff$current_sha1" = "$parent_sha1"; then
 152                 output git reset --hard $sha1
 153                 test "a$1" = a-n && output git reset --soft $current_sha1
 154                 sha1=$(git rev-parse --short $sha1)
 155                 output warn Fast forward to $sha1
 156         else
 157                 output git cherry-pick "$@"
 158         fi
 159 }
 160
 161 pick_one_preserving_merges () {
 162         fast_forward=t
 163         case "$1" in
 164         -n)
 165                 fast_forward=f
 166                 sha1=$2
 167                 ;;
 168         *)
 169                 sha1=$1
 170                 ;;
 171         esac
 172         sha1=$(git rev-parse $sha1)
 173
 174         if test -f "$DOTEST"/current-commit
 175         then
 176                 if test "$fast_forward" = t
 177                 then
 178                         cat "$DOTEST"/current-commit | while read current_commit
 179                         do
 180                                 git rev-parse HEAD > "$REWRITTEN"/$current_commit
 181                         done
 182                         rm "$DOTEST"/current-commit ||
 183                         die "Cannot write current commit's replacement sha1"
 184                 fi
 185         fi
 186
 187         echo $sha1 >> "$DOTEST"/current-commit
 188
 189         # rewrite parents; if none were rewritten, we can fast-forward.
 190         new_parents=
 191         pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)"
 192         while [ "$pend" != "" ]
 193         do
 194                 p=$(expr "$pend" : ' \([^ ]*\)')
 195                 pend="${pend# $p}"
 196
 197                 if test -f "$REWRITTEN"/$p
 198                 then
 199                         new_p=$(cat "$REWRITTEN"/$p)
 200
 201                         # If the todo reordered commits, and our parent is marked for
 202                         # rewriting, but hasn't been gotten to yet, assume the user meant to
 203                         # drop it on top of the current HEAD
 204                         if test -z "$new_p"
 205                         then
 206                                 new_p=$(git rev-parse HEAD)
 207                         fi
 208
 209                         test $p != $new_p && fast_forward=f
 210                         case "$new_parents" in
 211                         *$new_p*)
 212                                 ;; # do nothing; that parent is already there
 213                         *)
 214                                 new_parents="$new_parents $new_p"
 215                                 ;;
 216                         esac
 217                 else
 218                         if test -f "$DROPPED"/$p
 219                         then
 220                                 fast_forward=f
 221                                 pend=" $(cat "$DROPPED"/$p)$pend"
 222                         else
 223                                 new_parents="$new_parents $p"
 224                         fi
 225                 fi
 226         done
 227         case $fast_forward in
 228         t)
 229                 output warn "Fast forward to $sha1"
 230                 output git reset --hard $sha1 ||
 231                         die "Cannot fast forward to $sha1"
 232                 ;;
 233         f)
 234                 first_parent=$(expr "$new_parents" : ' \([^ ]*\)')
 235
 236                 if [ "$1" != "-n" ]
 237                 then
 238                         # detach HEAD to current parent
 239                         output git checkout $first_parent 2> /dev/null ||
 240                                 die "Cannot move HEAD to $first_parent"
 241                 fi
 242
 243                 case "$new_parents" in
 244                 ' '*' '*)
 245                         test "a$1" = a-n && die "Refusing to squash a merge: $sha1"
 246
 247                         # redo merge
 248                         author_script=$(get_author_ident_from_commit $sha1)
 249                         eval "$author_script"
 250                         msg="$(git cat-file commit $sha1 | sed -e '1,/^$/d')"
 251                         # No point in merging the first parent, that's HEAD
 252                         new_parents=${new_parents# $first_parent}
 253                         if ! GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \
 254                                 GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \
 255                                 GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \
 256                                 output git merge $STRATEGY -m "$msg" \
 257                                         $new_parents
 258                         then
 259                                 git rerere
 260                                 printf "%s\n" "$msg" > "$GIT_DIR"/MERGE_MSG
 261                                 die Error redoing merge $sha1
 262                         fi
 263                         ;;
 264                 *)
 265                         output git cherry-pick "$@" ||
 266                                 die_with_patch $sha1 "Could not pick $sha1"
 267                         ;;
 268                 esac
 269                 ;;
 270         esac
 271 }
 272
 273 nth_string () {
 274         case "$1" in
 275         *1[0-9]|*[04-9]) echo "$1"th;;
 276         *1) echo "$1"st;;
 277         *2) echo "$1"nd;;
 278         *3) echo "$1"rd;;
 279         esac
 280 }
 281
 282 make_squash_message () {
 283         if test -f "$SQUASH_MSG"; then
 284                 COUNT=$(($(sed -n "s/^# This is [^0-9]*\([1-9][0-9]*\).*/\1/p" \
 285                         < "$SQUASH_MSG" | sed -ne '$p')+1))
 286                 echo "# This is a combination of $COUNT commits."
 287                 sed -e 1d -e '2,/^./{
 288                         /^$/d
 289                 }' <"$SQUASH_MSG"
 290         else
 291                 COUNT=2
 292                 echo "# This is a combination of two commits."
 293                 echo "# The first commit's message is:"
 294                 echo
 295                 git cat-file commit HEAD | sed -e '1,/^$/d'
 296         fi
 297         echo
 298         echo "# This is the $(nth_string $COUNT) commit message:"
 299         echo
 300         git cat-file commit $1 | sed -e '1,/^$/d'
 301 }
 302
 303 peek_next_command () {
 304         sed -n "1s/ .*$//p" < "$TODO"
 305 }
 306
 307 do_next () {
 308         rm -f "$DOTEST"/message "$DOTEST"/author-script \
 309                 "$DOTEST"/amend || exit
 310         read command sha1 rest < "$TODO"
 311         case "$command" in
 312         '#'*|''|noop)
 313                 mark_action_done
 314                 ;;
 315         pick|p)
 316                 comment_for_reflog pick
 317
 318                 mark_action_done
 319                 pick_one $sha1 ||
 320                         die_with_patch $sha1 "Could not apply $sha1... $rest"
 321                 ;;
 322         edit|e)
 323                 comment_for_reflog edit
 324
 325                 mark_action_done
 326                 pick_one $sha1 ||
 327                         die_with_patch $sha1 "Could not apply $sha1... $rest"
 328                 make_patch $sha1
 329                 git rev-parse --verify HEAD > "$DOTEST"/amend
 330                 warn "Stopped at $sha1... $rest"
 331                 warn "You can amend the commit now, with"
 332                 warn
 333                 warn "  git commit --amend"
 334                 warn
 335                 warn "Once you are satisfied with your changes, run"
 336                 warn
 337                 warn "  git rebase --continue"
 338                 warn
 339                 exit 0
 340                 ;;
 341         squash|s)
 342                 comment_for_reflog squash
 343
 344                 has_action "$DONE" ||
 345                         die "Cannot 'squash' without a previous commit"
 346
 347                 mark_action_done
 348                 make_squash_message $sha1 > "$MSG"
 349                 failed=f
 350                 author_script=$(get_author_ident_from_commit HEAD)
 351                 output git reset --soft HEAD^
 352                 pick_one -n $sha1 || failed=t
 353                 case "$(peek_next_command)" in
 354                 squash|s)
 355                         EDIT_COMMIT=
 356                         USE_OUTPUT=output
 357                         MSG_OPT=-F
 358                         MSG_FILE="$MSG"
 359                         cp "$MSG" "$SQUASH_MSG"
 360                         ;;
 361                 *)
 362                         EDIT_COMMIT=-e
 363                         USE_OUTPUT=
 364                         MSG_OPT=
 365                         MSG_FILE=
 366                         rm -f "$SQUASH_MSG" || exit
 367                         cp "$MSG" "$GIT_DIR"/SQUASH_MSG
 368                         rm -f "$GIT_DIR"/MERGE_MSG || exit
 369                         ;;
 370                 esac
 371                 echo "$author_script" > "$DOTEST"/author-script
 372                 if test $failed = f
 373                 then
 374                         # This is like --amend, but with a different message
 375                         eval "$author_script"
 376                         GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \
 377                         GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \
 378                         GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \
 379                         $USE_OUTPUT git commit --no-verify $MSG_OPT "$MSG_FILE" $EDIT_COMMIT || failed=t
 380                 fi
 381                 if test $failed = t
 382                 then
 383                         cp "$MSG" "$GIT_DIR"/MERGE_MSG
 384                         warn
 385                         warn "Could not apply $sha1... $rest"
 386                         die_with_patch $sha1 ""
 387                 fi
 388                 ;;
 389         *)
 390                 warn "Unknown command: $command $sha1 $rest"
 391                 die_with_patch $sha1 "Please fix this in the file $TODO."
 392                 ;;
 393         esac
 394         test -s "$TODO" && return
 395
 396         comment_for_reflog finish &&
 397         HEADNAME=$(cat "$DOTEST"/head-name) &&
 398         OLDHEAD=$(cat "$DOTEST"/head) &&
 399         SHORTONTO=$(git rev-parse --short $(cat "$DOTEST"/onto)) &&
 400         NEWHEAD=$(git rev-parse HEAD) &&
 401         case $HEADNAME in
 402         refs/*)
 403                 message="$GIT_REFLOG_ACTION: $HEADNAME onto $SHORTONTO)" &&
 404                 git update-ref -m "$message" $HEADNAME $NEWHEAD $OLDHEAD &&
 405                 git symbolic-ref HEAD $HEADNAME
 406                 ;;
 407         esac && {
 408                 test ! -f "$DOTEST"/verbose ||
 409                         git diff-tree --stat $(cat "$DOTEST"/head)..HEAD
 410         } &&
 411         rm -rf "$DOTEST" &&
 412         git gc --auto &&
 413         warn "Successfully rebased and updated $HEADNAME."
 414
 415         exit
 416 }
 417
 418 do_rest () {
 419         while :
 420         do
 421                 do_next
 422         done
 423 }
 424
 425 # check if no other options are set
 426 is_standalone () {
 427         test $# -eq 2 -a "$2" = '--' &&
 428         test -z "$ONTO" &&
 429         test -z "$PRESERVE_MERGES" &&
 430         test -z "$STRATEGY" &&
 431         test -z "$VERBOSE"
 432 }
 433
 434 get_saved_options () {
 435         test -d "$REWRITTEN" && PRESERVE_MERGES=t
 436         test -f "$DOTEST"/strategy && STRATEGY="$(cat "$DOTEST"/strategy)"
 437         test -f "$DOTEST"/verbose && VERBOSE=t
 438 }
 439
 440 while test $# != 0
 441 do
 442         case "$1" in
 443         --no-verify)
 444                 OK_TO_SKIP_PRE_REBASE=yes
 445                 ;;
 446         --verify)
 447                 ;;
 448         --continue)
 449                 is_standalone "$@" || usage
 450                 get_saved_options
 451                 comment_for_reflog continue
 452
 453                 test -d "$DOTEST" || die "No interactive rebase running"
 454
 455                 # Sanity check
 456                 git rev-parse --verify HEAD >/dev/null ||
 457                         die "Cannot read HEAD"
 458                 git update-index --ignore-submodules --refresh &&
 459                         git diff-files --quiet --ignore-submodules ||
 460                         die "Working tree is dirty"
 461
 462                 # do we have anything to commit?
 463                 if git diff-index --cached --quiet --ignore-submodules HEAD --
 464                 then
 465                         : Nothing to commit -- skip this
 466                 else
 467                         . "$DOTEST"/author-script ||
 468                                 die "Cannot find the author identity"
 469                         amend=
 470                         if test -f "$DOTEST"/amend
 471                         then
 472                                 amend=$(git rev-parse --verify HEAD)
 473                                 test "$amend" = $(cat "$DOTEST"/amend) ||
 474                                 die "\
 475 You have uncommitted changes in your working tree. Please, commit them
 476 first and then run 'git rebase --continue' again."
 477                                 git reset --soft HEAD^ ||
 478                                 die "Cannot rewind the HEAD"
 479                         fi
 480                         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE &&
 481                         git commit --no-verify -F "$DOTEST"/message -e || {
 482                                 test -n "$amend" && git reset --soft $amend
 483                                 die "Could not commit staged changes."
 484                         }
 485                 fi
 486
 487                 require_clean_work_tree
 488                 do_rest
 489                 ;;
 490         --abort)
 491                 is_standalone "$@" || usage
 492                 get_saved_options
 493                 comment_for_reflog abort
 494
 495                 git rerere clear
 496                 test -d "$DOTEST" || die "No interactive rebase running"
 497
 498                 HEADNAME=$(cat "$DOTEST"/head-name)
 499                 HEAD=$(cat "$DOTEST"/head)
 500                 case $HEADNAME in
 501                 refs/*)
 502                         git symbolic-ref HEAD $HEADNAME
 503                         ;;
 504                 esac &&
 505                 output git reset --hard $HEAD &&
 506                 rm -rf "$DOTEST"
 507                 exit
 508                 ;;
 509         --skip)
 510                 is_standalone "$@" || usage
 511                 get_saved_options
 512                 comment_for_reflog skip
 513
 514                 git rerere clear
 515                 test -d "$DOTEST" || die "No interactive rebase running"
 516
 517                 output git reset --hard && do_rest
 518                 ;;
 519         -s)
 520                 case "$#,$1" in
 521                 *,*=*)
 522                         STRATEGY="-s "$(expr "z$1" : 'z-[^=]*=\(.*\)') ;;
 523                 1,*)
 524                         usage ;;
 525                 *)
 526                         STRATEGY="-s $2"
 527                         shift ;;
 528                 esac
 529                 ;;
 530         -m)
 531                 # we use merge anyway
 532                 ;;
 533         -v)
 534                 VERBOSE=t
 535                 ;;
 536         -p)
 537                 PRESERVE_MERGES=t
 538                 ;;
 539         -i)
 540                 # yeah, we know
 541                 ;;
 542         --onto)
 543                 shift
 544                 ONTO=$(git rev-parse --verify "$1") ||
 545                         die "Does not point to a valid commit: $1"
 546                 ;;
 547         --)
 548                 shift
 549                 run_pre_rebase_hook ${1+"$@"}
 550                 test $# -eq 1 -o $# -eq 2 || usage
 551                 test -d "$DOTEST" &&
 552                         die "Interactive rebase already started"
 553
 554                 git var GIT_COMMITTER_IDENT >/dev/null ||
 555                         die "You need to set your committer info first"
 556
 557                 comment_for_reflog start
 558
 559                 require_clean_work_tree
 560
 561                 UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base"
 562                 test -z "$ONTO" && ONTO=$UPSTREAM
 563
 564                 if test ! -z "$2"
 565                 then
 566                         output git show-ref --verify --quiet "refs/heads/$2" ||
 567                                 die "Invalid branchname: $2"
 568                         output git checkout "$2" ||
 569                                 die "Could not checkout $2"
 570                 fi
 571
 572                 HEAD=$(git rev-parse --verify HEAD) || die "No HEAD?"
 573                 mkdir "$DOTEST" || die "Could not create temporary $DOTEST"
 574
 575                 : > "$DOTEST"/interactive || die "Could not mark as interactive"
 576                 git symbolic-ref HEAD > "$DOTEST"/head-name 2> /dev/null ||
 577                         echo "detached HEAD" > "$DOTEST"/head-name
 578
 579                 echo $HEAD > "$DOTEST"/head
 580                 echo $UPSTREAM > "$DOTEST"/upstream
 581                 echo $ONTO > "$DOTEST"/onto
 582                 test -z "$STRATEGY" || echo "$STRATEGY" > "$DOTEST"/strategy
 583                 test t = "$VERBOSE" && : > "$DOTEST"/verbose
 584                 if test t = "$PRESERVE_MERGES"
 585                 then
 586                         # $REWRITTEN contains files for each commit that is
 587                         # reachable by at least one merge base of $HEAD and
 588                         # $UPSTREAM. They are not necessarily rewritten, but
 589                         # their children might be.
 590                         # This ensures that commits on merged, but otherwise
 591                         # unrelated side branches are left alone. (Think "X"
 592                         # in the man page's example.)
 593                         mkdir "$REWRITTEN" &&
 594                         for c in $(git merge-base --all $HEAD $UPSTREAM)
 595                         do
 596                                 echo $ONTO > "$REWRITTEN"/$c ||
 597                                         die "Could not init rewritten commits"
 598                         done
 599                         # No cherry-pick because our first pass is to determine
 600                         # parents to rewrite and skipping dropped commits would
 601                         # prematurely end our probe
 602                         MERGES_OPTION=
 603                         first_after_upstream="$(git rev-list --reverse --first-parent $UPSTREAM..$HEAD | head -n 1)"
 604                 else
 605                         MERGES_OPTION="--no-merges --cherry-pick"
 606                 fi
 607
 608                 SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
 609                 SHORTHEAD=$(git rev-parse --short $HEAD)
 610                 SHORTONTO=$(git rev-parse --short $ONTO)
 611                 git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
 612                         --abbrev=7 --reverse --left-right --topo-order \
 613                         $UPSTREAM...$HEAD | \
 614                         sed -n "s/^>//p" | while read shortsha1 rest
 615                 do
 616                         if test t != "$PRESERVE_MERGES"
 617                         then
 618                                 echo "pick $shortsha1 $rest" >> "$TODO"
 619                         else
 620                                 sha1=$(git rev-parse $shortsha1)
 621                                 preserve=t
 622                                 for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)
 623                                 do
 624                                         if test -f "$REWRITTEN"/$p -a \( $p != $UPSTREAM -o $sha1 = $first_after_upstream \)
 625                                         then
 626                                                 preserve=f
 627                                         fi
 628                                 done
 629                                 if test f = "$preserve"
 630                                 then
 631                                         touch "$REWRITTEN"/$sha1
 632                                         echo "pick $shortsha1 $rest" >> "$TODO"
 633                                 fi
 634                         fi
 635                 done
 636
 637                 # Watch for commits that been dropped by --cherry-pick
 638                 if test t = "$PRESERVE_MERGES"
 639                 then
 640                         mkdir "$DROPPED"
 641                         # Save all non-cherry-picked changes
 642                         git rev-list $UPSTREAM...$HEAD --left-right --cherry-pick | \
 643                                 sed -n "s/^>//p" > "$DOTEST"/not-cherry-picks
 644                         # Now all commits and note which ones are missing in
 645                         # not-cherry-picks and hence being dropped
 646                         git rev-list $UPSTREAM..$HEAD |
 647                         while read rev
 648                         do
 649                                 if test -f "$REWRITTEN"/$rev -a "$(grep "$rev" "$DOTEST"/not-cherry-picks)" = ""
 650                                 then
 651                                         # Use -f2 because if rev-list is telling us this commit is
 652                                         # not worthwhile, we don't want to track its multiple heads,
 653                                         # just the history of its first-parent for others that will
 654                                         # be rebasing on top of it
 655                                         git rev-list --parents -1 $rev | cut -d' ' -f2 > "$DROPPED"/$rev
 656                                         short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev)
 657                                         grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO"
 658                                         rm "$REWRITTEN"/$rev
 659                                 fi
 660                         done
 661                 fi
 662                 test -s "$TODO" || echo noop >> "$TODO"
 663                 cat >> "$TODO" << EOF
 664
 665 # Rebase $SHORTUPSTREAM..$SHORTHEAD onto $SHORTONTO
 666 #
 667 # Commands:
 668 #  p, pick = use commit
 669 #  e, edit = use commit, but stop for amending
 670 #  s, squash = use commit, but meld into previous commit
 671 #
 672 # If you remove a line here THAT COMMIT WILL BE LOST.
 673 # However, if you remove everything, the rebase will be aborted.
 674 #
 675 EOF
 676
 677                 has_action "$TODO" ||
 678                         die_abort "Nothing to do"
 679
 680                 cp "$TODO" "$TODO".backup
 681                 git_editor "$TODO" ||
 682                         die "Could not execute editor"
 683
 684                 has_action "$TODO" ||
 685                         die_abort "Nothing to do"
 686
 687                 git update-ref ORIG_HEAD $HEAD
 688                 output git checkout $ONTO && do_rest
 689                 ;;
 690         esac
 691         shift
 692 done