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                                         $new_parents
 258                         then
 259                                 printf "%s\n" "$msg" > "$GIT_DIR"/MERGE_MSG
 260                                 die_with_patch $sha1 "Error redoing merge $sha1"
 261                         fi
 262                         ;;
 263                 *)
 264                         output git cherry-pick "$@" ||
 265                                 die_with_patch $sha1 "Could not pick $sha1"
 266                         ;;
 267                 esac
 268                 ;;
 269         esac
 270 }
 271
 272 nth_string () {
 273         case "$1" in
 274         *1[0-9]|*[04-9]) echo "$1"th;;
 275         *1) echo "$1"st;;
 276         *2) echo "$1"nd;;
 277         *3) echo "$1"rd;;
 278         esac
 279 }
 280
 281 make_squash_message () {
 282         if test -f "$SQUASH_MSG"; then
 283                 COUNT=$(($(sed -n "s/^# This is [^0-9]*\([1-9][0-9]*\).*/\1/p" \
 284                         < "$SQUASH_MSG" | sed -ne '$p')+1))
 285                 echo "# This is a combination of $COUNT commits."
 286                 sed -e 1d -e '2,/^./{
 287                         /^$/d
 288                 }' <"$SQUASH_MSG"
 289         else
 290                 COUNT=2
 291                 echo "# This is a combination of two commits."
 292                 echo "# The first commit's message is:"
 293                 echo
 294                 git cat-file commit HEAD | sed -e '1,/^$/d'
 295         fi
 296         echo
 297         echo "# This is the $(nth_string $COUNT) commit message:"
 298         echo
 299         git cat-file commit $1 | sed -e '1,/^$/d'
 300 }
 301
 302 peek_next_command () {
 303         sed -n "1s/ .*$//p" < "$TODO"
 304 }
 305
 306 do_next () {
 307         rm -f "$DOTEST"/message "$DOTEST"/author-script \
 308                 "$DOTEST"/amend || exit
 309         read command sha1 rest < "$TODO"
 310         case "$command" in
 311         '#'*|''|noop)
 312                 mark_action_done
 313                 ;;
 314         pick|p)
 315                 comment_for_reflog pick
 316
 317                 mark_action_done
 318                 pick_one $sha1 ||
 319                         die_with_patch $sha1 "Could not apply $sha1... $rest"
 320                 ;;
 321         edit|e)
 322                 comment_for_reflog edit
 323
 324                 mark_action_done
 325                 pick_one $sha1 ||
 326                         die_with_patch $sha1 "Could not apply $sha1... $rest"
 327                 make_patch $sha1
 328                 git rev-parse --verify HEAD > "$DOTEST"/amend
 329                 warn "Stopped at $sha1... $rest"
 330                 warn "You can amend the commit now, with"
 331                 warn
 332                 warn "  git commit --amend"
 333                 warn
 334                 warn "Once you are satisfied with your changes, run"
 335                 warn
 336                 warn "  git rebase --continue"
 337                 warn
 338                 exit 0
 339                 ;;
 340         squash|s)
 341                 comment_for_reflog squash
 342
 343                 has_action "$DONE" ||
 344                         die "Cannot 'squash' without a previous commit"
 345
 346                 mark_action_done
 347                 make_squash_message $sha1 > "$MSG"
 348                 failed=f
 349                 author_script=$(get_author_ident_from_commit HEAD)
 350                 output git reset --soft HEAD^
 351                 pick_one -n $sha1 || failed=t
 352                 case "$(peek_next_command)" in
 353                 squash|s)
 354                         EDIT_COMMIT=
 355                         USE_OUTPUT=output
 356                         MSG_OPT=-F
 357                         MSG_FILE="$MSG"
 358                         cp "$MSG" "$SQUASH_MSG"
 359                         ;;
 360                 *)
 361                         EDIT_COMMIT=-e
 362                         USE_OUTPUT=
 363                         MSG_OPT=
 364                         MSG_FILE=
 365                         rm -f "$SQUASH_MSG" || exit
 366                         cp "$MSG" "$GIT_DIR"/SQUASH_MSG
 367                         rm -f "$GIT_DIR"/MERGE_MSG || exit
 368                         ;;
 369                 esac
 370                 echo "$author_script" > "$DOTEST"/author-script
 371                 if test $failed = f
 372                 then
 373                         # This is like --amend, but with a different message
 374                         eval "$author_script"
 375                         GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \
 376                         GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \
 377                         GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \
 378                         $USE_OUTPUT git commit --no-verify $MSG_OPT "$MSG_FILE" $EDIT_COMMIT || failed=t
 379                 fi
 380                 if test $failed = t
 381                 then
 382                         cp "$MSG" "$GIT_DIR"/MERGE_MSG
 383                         warn
 384                         warn "Could not apply $sha1... $rest"
 385                         die_with_patch $sha1 ""
 386                 fi
 387                 ;;
 388         *)
 389                 warn "Unknown command: $command $sha1 $rest"
 390                 die_with_patch $sha1 "Please fix this in the file $TODO."
 391                 ;;
 392         esac
 393         test -s "$TODO" && return
 394
 395         comment_for_reflog finish &&
 396         HEADNAME=$(cat "$DOTEST"/head-name) &&
 397         OLDHEAD=$(cat "$DOTEST"/head) &&
 398         SHORTONTO=$(git rev-parse --short $(cat "$DOTEST"/onto)) &&
 399         NEWHEAD=$(git rev-parse HEAD) &&
 400         case $HEADNAME in
 401         refs/*)
 402                 message="$GIT_REFLOG_ACTION: $HEADNAME onto $SHORTONTO)" &&
 403                 git update-ref -m "$message" $HEADNAME $NEWHEAD $OLDHEAD &&
 404                 git symbolic-ref HEAD $HEADNAME
 405                 ;;
 406         esac && {
 407                 test ! -f "$DOTEST"/verbose ||
 408                         git diff-tree --stat $(cat "$DOTEST"/head)..HEAD
 409         } &&
 410         rm -rf "$DOTEST" &&
 411         git gc --auto &&
 412         warn "Successfully rebased and updated $HEADNAME."
 413
 414         exit
 415 }
 416
 417 do_rest () {
 418         while :
 419         do
 420                 do_next
 421         done
 422 }
 423
 424 # check if no other options are set
 425 is_standalone () {
 426         test $# -eq 2 -a "$2" = '--' &&
 427         test -z "$ONTO" &&
 428         test -z "$PRESERVE_MERGES" &&
 429         test -z "$STRATEGY" &&
 430         test -z "$VERBOSE"
 431 }
 432
 433 get_saved_options () {
 434         test -d "$REWRITTEN" && PRESERVE_MERGES=t
 435         test -f "$DOTEST"/strategy && STRATEGY="$(cat "$DOTEST"/strategy)"
 436         test -f "$DOTEST"/verbose && VERBOSE=t
 437 }
 438
 439 while test $# != 0
 440 do
 441         case "$1" in
 442         --no-verify)
 443                 OK_TO_SKIP_PRE_REBASE=yes
 444                 ;;
 445         --verify)
 446                 ;;
 447         --continue)
 448                 is_standalone "$@" || usage
 449                 get_saved_options
 450                 comment_for_reflog continue
 451
 452                 test -d "$DOTEST" || die "No interactive rebase running"
 453
 454                 # Sanity check
 455                 git rev-parse --verify HEAD >/dev/null ||
 456                         die "Cannot read HEAD"
 457                 git update-index --ignore-submodules --refresh &&
 458                         git diff-files --quiet --ignore-submodules ||
 459                         die "Working tree is dirty"
 460
 461                 # do we have anything to commit?
 462                 if git diff-index --cached --quiet --ignore-submodules HEAD --
 463                 then
 464                         : Nothing to commit -- skip this
 465                 else
 466                         . "$DOTEST"/author-script ||
 467                                 die "Cannot find the author identity"
 468                         amend=
 469                         if test -f "$DOTEST"/amend
 470                         then
 471                                 amend=$(git rev-parse --verify HEAD)
 472                                 test "$amend" = $(cat "$DOTEST"/amend) ||
 473                                 die "\
 474 You have uncommitted changes in your working tree. Please, commit them
 475 first and then run 'git rebase --continue' again."
 476                                 git reset --soft HEAD^ ||
 477                                 die "Cannot rewind the HEAD"
 478                         fi
 479                         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE &&
 480                         git commit --no-verify -F "$DOTEST"/message -e || {
 481                                 test -n "$amend" && git reset --soft $amend
 482                                 die "Could not commit staged changes."
 483                         }
 484                 fi
 485
 486                 require_clean_work_tree
 487                 do_rest
 488                 ;;
 489         --abort)
 490                 is_standalone "$@" || usage
 491                 get_saved_options
 492                 comment_for_reflog abort
 493
 494                 git rerere clear
 495                 test -d "$DOTEST" || die "No interactive rebase running"
 496
 497                 HEADNAME=$(cat "$DOTEST"/head-name)
 498                 HEAD=$(cat "$DOTEST"/head)
 499                 case $HEADNAME in
 500                 refs/*)
 501                         git symbolic-ref HEAD $HEADNAME
 502                         ;;
 503                 esac &&
 504                 output git reset --hard $HEAD &&
 505                 rm -rf "$DOTEST"
 506                 exit
 507                 ;;
 508         --skip)
 509                 is_standalone "$@" || usage
 510                 get_saved_options
 511                 comment_for_reflog skip
 512
 513                 git rerere clear
 514                 test -d "$DOTEST" || die "No interactive rebase running"
 515
 516                 output git reset --hard && do_rest
 517                 ;;
 518         -s)
 519                 case "$#,$1" in
 520                 *,*=*)
 521                         STRATEGY="-s "$(expr "z$1" : 'z-[^=]*=\(.*\)') ;;
 522                 1,*)
 523                         usage ;;
 524                 *)
 525                         STRATEGY="-s $2"
 526                         shift ;;
 527                 esac
 528                 ;;
 529         -m)
 530                 # we use merge anyway
 531                 ;;
 532         -v)
 533                 VERBOSE=t
 534                 ;;
 535         -p)
 536                 PRESERVE_MERGES=t
 537                 ;;
 538         -i)
 539                 # yeah, we know
 540                 ;;
 541         --onto)
 542                 shift
 543                 ONTO=$(git rev-parse --verify "$1") ||
 544                         die "Does not point to a valid commit: $1"
 545                 ;;
 546         --)
 547                 shift
 548                 run_pre_rebase_hook ${1+"$@"}
 549                 test $# -eq 1 -o $# -eq 2 || usage
 550                 test -d "$DOTEST" &&
 551                         die "Interactive rebase already started"
 552
 553                 git var GIT_COMMITTER_IDENT >/dev/null ||
 554                         die "You need to set your committer info first"
 555
 556                 comment_for_reflog start
 557
 558                 require_clean_work_tree
 559
 560                 UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base"
 561                 test -z "$ONTO" && ONTO=$UPSTREAM
 562
 563                 if test ! -z "$2"
 564                 then
 565                         output git show-ref --verify --quiet "refs/heads/$2" ||
 566                                 die "Invalid branchname: $2"
 567                         output git checkout "$2" ||
 568                                 die "Could not checkout $2"
 569                 fi
 570
 571                 HEAD=$(git rev-parse --verify HEAD) || die "No HEAD?"
 572                 mkdir "$DOTEST" || die "Could not create temporary $DOTEST"
 573
 574                 : > "$DOTEST"/interactive || die "Could not mark as interactive"
 575                 git symbolic-ref HEAD > "$DOTEST"/head-name 2> /dev/null ||
 576                         echo "detached HEAD" > "$DOTEST"/head-name
 577
 578                 echo $HEAD > "$DOTEST"/head
 579                 echo $UPSTREAM > "$DOTEST"/upstream
 580                 echo $ONTO > "$DOTEST"/onto
 581                 test -z "$STRATEGY" || echo "$STRATEGY" > "$DOTEST"/strategy
 582                 test t = "$VERBOSE" && : > "$DOTEST"/verbose
 583                 if test t = "$PRESERVE_MERGES"
 584                 then
 585                         # $REWRITTEN contains files for each commit that is
 586                         # reachable by at least one merge base of $HEAD and
 587                         # $UPSTREAM. They are not necessarily rewritten, but
 588                         # their children might be.
 589                         # This ensures that commits on merged, but otherwise
 590                         # unrelated side branches are left alone. (Think "X"
 591                         # in the man page's example.)
 592                         mkdir "$REWRITTEN" &&
 593                         for c in $(git merge-base --all $HEAD $UPSTREAM)
 594                         do
 595                                 echo $ONTO > "$REWRITTEN"/$c ||
 596                                         die "Could not init rewritten commits"
 597                         done
 598                         # No cherry-pick because our first pass is to determine
 599                         # parents to rewrite and skipping dropped commits would
 600                         # prematurely end our probe
 601                         MERGES_OPTION=
 602                         first_after_upstream="$(git rev-list --reverse --first-parent $UPSTREAM..$HEAD | head -n 1)"
 603                 else
 604                         MERGES_OPTION="--no-merges --cherry-pick"
 605                 fi
 606
 607                 SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
 608                 SHORTHEAD=$(git rev-parse --short $HEAD)
 609                 SHORTONTO=$(git rev-parse --short $ONTO)
 610                 git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
 611                         --abbrev=7 --reverse --left-right --topo-order \
 612                         $UPSTREAM...$HEAD | \
 613                         sed -n "s/^>//p" | while read shortsha1 rest
 614                 do
 615                         if test t != "$PRESERVE_MERGES"
 616                         then
 617                                 echo "pick $shortsha1 $rest" >> "$TODO"
 618                         else
 619                                 sha1=$(git rev-parse $shortsha1)
 620                                 preserve=t
 621                                 for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)
 622                                 do
 623                                         if test -f "$REWRITTEN"/$p -a \( $p != $UPSTREAM -o $sha1 = $first_after_upstream \)
 624                                         then
 625                                                 preserve=f
 626                                         fi
 627                                 done
 628                                 if test f = "$preserve"
 629                                 then
 630                                         touch "$REWRITTEN"/$sha1
 631                                         echo "pick $shortsha1 $rest" >> "$TODO"
 632                                 fi
 633                         fi
 634                 done
 635
 636                 # Watch for commits that been dropped by --cherry-pick
 637                 if test t = "$PRESERVE_MERGES"
 638                 then
 639                         mkdir "$DROPPED"
 640                         # Save all non-cherry-picked changes
 641                         git rev-list $UPSTREAM...$HEAD --left-right --cherry-pick | \
 642                                 sed -n "s/^>//p" > "$DOTEST"/not-cherry-picks
 643                         # Now all commits and note which ones are missing in
 644                         # not-cherry-picks and hence being dropped
 645                         git rev-list $UPSTREAM..$HEAD |
 646                         while read rev
 647                         do
 648                                 if test -f "$REWRITTEN"/$rev -a "$(grep "$rev" "$DOTEST"/not-cherry-picks)" = ""
 649                                 then
 650                                         # Use -f2 because if rev-list is telling us this commit is
 651                                         # not worthwhile, we don't want to track its multiple heads,
 652                                         # just the history of its first-parent for others that will
 653                                         # be rebasing on top of it
 654                                         git rev-list --parents -1 $rev | cut -d' ' -f2 > "$DROPPED"/$rev
 655                                         short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev)
 656                                         grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO"
 657                                         rm "$REWRITTEN"/$rev
 658                                 fi
 659                         done
 660                 fi
 661                 test -s "$TODO" || echo noop >> "$TODO"
 662                 cat >> "$TODO" << EOF
 663
 664 # Rebase $SHORTUPSTREAM..$SHORTHEAD onto $SHORTONTO
 665 #
 666 # Commands:
 667 #  p, pick = use commit
 668 #  e, edit = use commit, but stop for amending
 669 #  s, squash = use commit, but meld into previous commit
 670 #
 671 # If you remove a line here THAT COMMIT WILL BE LOST.
 672 # However, if you remove everything, the rebase will be aborted.
 673 #
 674 EOF
 675
 676                 has_action "$TODO" ||
 677                         die_abort "Nothing to do"
 678
 679                 cp "$TODO" "$TODO".backup
 680                 git_editor "$TODO" ||
 681                         die "Could not execute editor"
 682
 683                 has_action "$TODO" ||
 684                         die_abort "Nothing to do"
 685
 686                 git update-ref ORIG_HEAD $HEAD
 687                 output git checkout $ONTO && do_rest
 688                 ;;
 689         esac
 690         shift
 691 done