git-am.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005, 2006 Junio C Hamano
   4
   5 SUBDIRECTORY_OK=Yes
   6 OPTIONS_KEEPDASHDASH=
   7 OPTIONS_SPEC="\
   8 git am [options] [(<mbox>|<Maildir>)...]
   9 git am [options] (--resolved | --skip | --abort)
  10 --
  11 i,interactive   run interactively
  12 b,binary*       (historical option -- no-op)
  13 3,3way          allow fall back on 3way merging if needed
  14 q,quiet         be quiet
  15 s,signoff       add a Signed-off-by line to the commit message
  16 u,utf8          recode into utf8 (default)
  17 k,keep          pass -k flag to git-mailinfo
  18 keep-cr         pass --keep-cr flag to git-mailsplit for mbox format
  19 no-keep-cr      do not pass --keep-cr flag to git-mailsplit independent of am.keepcr
  20 c,scissors      strip everything before a scissors line
  21 whitespace=     pass it through git-apply
  22 ignore-space-change pass it through git-apply
  23 ignore-whitespace pass it through git-apply
  24 directory=      pass it through git-apply
  25 C=              pass it through git-apply
  26 p=              pass it through git-apply
  27 patch-format=   format the patch(es) are in
  28 reject          pass it through git-apply
  29 resolvemsg=     override error message when patch failure occurs
  30 continue        continue applying patches after resolving a conflict
  31 r,resolved      synonyms for --continue
  32 skip            skip the current patch
  33 abort           restore the original branch and abort the patching operation.
  34 committer-date-is-author-date    lie about committer date
  35 ignore-date     use current timestamp for author date
  36 rerere-autoupdate update the index with reused conflict resolution if possible
  37 rebasing*       (internal use for git-rebase)"
  38
  39 . git-sh-setup
  40 prefix=$(git rev-parse --show-prefix)
  41 set_reflog_action am
  42 require_work_tree
  43 cd_to_toplevel
  44
  45 git var GIT_COMMITTER_IDENT >/dev/null ||
  46         die "You need to set your committer info first"
  47
  48 if git rev-parse --verify -q HEAD >/dev/null
  49 then
  50         HAS_HEAD=yes
  51 else
  52         HAS_HEAD=
  53 fi
  54
  55 cmdline="git am"
  56 if test '' != "$interactive"
  57 then
  58         cmdline="$cmdline -i"
  59 fi
  60 if test '' != "$threeway"
  61 then
  62         cmdline="$cmdline -3"
  63 fi
  64
  65 sq () {
  66         git rev-parse --sq-quote "$@"
  67 }
  68
  69 stop_here () {
  70     echo "$1" >"$dotest/next"
  71     git rev-parse --verify -q HEAD >"$dotest/abort-safety"
  72     exit 1
  73 }
  74
  75 safe_to_abort () {
  76         if test -f "$dotest/dirtyindex"
  77         then
  78                 return 1
  79         fi
  80
  81         if ! test -s "$dotest/abort-safety"
  82         then
  83                 return 0
  84         fi
  85
  86         abort_safety=$(cat "$dotest/abort-safety")
  87         if test "z$(git rev-parse --verify -q HEAD)" = "z$abort_safety"
  88         then
  89                 return 0
  90         fi
  91         echo >&2 "You seem to have moved HEAD since the last 'am' failure."
  92         echo >&2 "Not rewinding to ORIG_HEAD"
  93         return 1
  94 }
  95
  96 stop_here_user_resolve () {
  97     if [ -n "$resolvemsg" ]; then
  98             printf '%s\n' "$resolvemsg"
  99             stop_here $1
 100     fi
 101     echo "When you have resolved this problem run \"$cmdline --resolved\"."
 102     echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
 103     echo "To restore the original branch and stop patching run \"$cmdline --abort\"."
 104
 105     stop_here $1
 106 }
 107
 108 go_next () {
 109         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
 110                 "$dotest/patch" "$dotest/info"
 111         echo "$next" >"$dotest/next"
 112         this=$next
 113 }
 114
 115 cannot_fallback () {
 116         echo "$1"
 117         echo "Cannot fall back to three-way merge."
 118         exit 1
 119 }
 120
 121 fall_back_3way () {
 122     O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
 123
 124     rm -fr "$dotest"/patch-merge-*
 125     mkdir "$dotest/patch-merge-tmp-dir"
 126
 127     # First see if the patch records the index info that we can use.
 128     git apply --build-fake-ancestor "$dotest/patch-merge-tmp-index" \
 129         "$dotest/patch" &&
 130     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 131     git write-tree >"$dotest/patch-merge-base+" ||
 132     cannot_fallback "Repository lacks necessary blobs to fall back on 3-way merge."
 133
 134     say Using index info to reconstruct a base tree...
 135     if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 136         git apply --cached <"$dotest/patch"
 137     then
 138         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 139         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
 140     else
 141         cannot_fallback "Did you hand edit your patch?
 142 It does not apply to blobs recorded in its index."
 143     fi
 144
 145     test -f "$dotest/patch-merge-index" &&
 146     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
 147     orig_tree=$(cat "$dotest/patch-merge-base") &&
 148     rm -fr "$dotest"/patch-merge-* || exit 1
 149
 150     say Falling back to patching base and 3-way merge...
 151
 152     # This is not so wrong.  Depending on which base we picked,
 153     # orig_tree may be wildly different from ours, but his_tree
 154     # has the same set of wildly different changes in parts the
 155     # patch did not touch, so recursive ends up canceling them,
 156     # saying that we reverted all those changes.
 157
 158     eval GITHEAD_$his_tree='"$FIRSTLINE"'
 159     export GITHEAD_$his_tree
 160     if test -n "$GIT_QUIET"
 161     then
 162             GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
 163     fi
 164     git-merge-recursive $orig_tree -- HEAD $his_tree || {
 165             git rerere $allow_rerere_autoupdate
 166             echo Failed to merge in the changes.
 167             exit 1
 168     }
 169     unset GITHEAD_$his_tree
 170 }
 171
 172 clean_abort () {
 173         test $# = 0 || echo >&2 "$@"
 174         rm -fr "$dotest"
 175         exit 1
 176 }
 177
 178 patch_format=
 179
 180 check_patch_format () {
 181         # early return if patch_format was set from the command line
 182         if test -n "$patch_format"
 183         then
 184                 return 0
 185         fi
 186
 187         # we default to mbox format if input is from stdin and for
 188         # directories
 189         if test $# = 0 || test "x$1" = "x-" || test -d "$1"
 190         then
 191                 patch_format=mbox
 192                 return 0
 193         fi
 194
 195         # otherwise, check the first few lines of the first patch to try
 196         # to detect its format
 197         {
 198                 read l1
 199                 read l2
 200                 read l3
 201                 case "$l1" in
 202                 "From "* | "From: "*)
 203                         patch_format=mbox
 204                         ;;
 205                 '# This series applies on GIT commit'*)
 206                         patch_format=stgit-series
 207                         ;;
 208                 "# HG changeset patch")
 209                         patch_format=hg
 210                         ;;
 211                 *)
 212                         # if the second line is empty and the third is
 213                         # a From, Author or Date entry, this is very
 214                         # likely an StGIT patch
 215                         case "$l2,$l3" in
 216                         ,"From: "* | ,"Author: "* | ,"Date: "*)
 217                                 patch_format=stgit
 218                                 ;;
 219                         *)
 220                                 ;;
 221                         esac
 222                         ;;
 223                 esac
 224                 if test -z "$patch_format" &&
 225                         test -n "$l1" &&
 226                         test -n "$l2" &&
 227                         test -n "$l3"
 228                 then
 229                         # This begins with three non-empty lines.  Is this a
 230                         # piece of e-mail a-la RFC2822?  Grab all the headers,
 231                         # discarding the indented remainder of folded lines,
 232                         # and see if it looks like that they all begin with the
 233                         # header field names...
 234                         tr -d '\015' <"$1" |
 235                         sed -n -e '/^$/q' -e '/^[       ]/d' -e p |
 236                         sane_egrep -v '^[!-9;-~]+:' >/dev/null ||
 237                         patch_format=mbox
 238                 fi
 239         } < "$1" || clean_abort
 240 }
 241
 242 split_patches () {
 243         case "$patch_format" in
 244         mbox)
 245                 if test -n "$rebasing" || test t = "$keepcr"
 246                 then
 247                     keep_cr=--keep-cr
 248                 else
 249                     keep_cr=
 250                 fi
 251                 git mailsplit -d"$prec" -o"$dotest" -b $keep_cr -- "$@" > "$dotest/last" ||
 252                 clean_abort
 253                 ;;
 254         stgit-series)
 255                 if test $# -ne 1
 256                 then
 257                         clean_abort "Only one StGIT patch series can be applied at once"
 258                 fi
 259                 series_dir=`dirname "$1"`
 260                 series_file="$1"
 261                 shift
 262                 {
 263                         set x
 264                         while read filename
 265                         do
 266                                 set "$@" "$series_dir/$filename"
 267                         done
 268                         # remove the safety x
 269                         shift
 270                         # remove the arg coming from the first-line comment
 271                         shift
 272                 } < "$series_file" || clean_abort
 273                 # set the patch format appropriately
 274                 patch_format=stgit
 275                 # now handle the actual StGIT patches
 276                 split_patches "$@"
 277                 ;;
 278         stgit)
 279                 this=0
 280                 for stgit in "$@"
 281                 do
 282                         this=`expr "$this" + 1`
 283                         msgnum=`printf "%0${prec}d" $this`
 284                         # Perl version of StGIT parse_patch. The first nonemptyline
 285                         # not starting with Author, From or Date is the
 286                         # subject, and the body starts with the next nonempty
 287                         # line not starting with Author, From or Date
 288                         perl -ne 'BEGIN { $subject = 0 }
 289                                 if ($subject > 1) { print ; }
 290                                 elsif (/^\s+$/) { next ; }
 291                                 elsif (/^Author:/) { print s/Author/From/ ; }
 292                                 elsif (/^(From|Date)/) { print ; }
 293                                 elsif ($subject) {
 294                                         $subject = 2 ;
 295                                         print "\n" ;
 296                                         print ;
 297                                 } else {
 298                                         print "Subject: ", $_ ;
 299                                         $subject = 1;
 300                                 }
 301                         ' < "$stgit" > "$dotest/$msgnum" || clean_abort
 302                 done
 303                 echo "$this" > "$dotest/last"
 304                 this=
 305                 msgnum=
 306                 ;;
 307         *)
 308                 if test -n "$parse_patch" ; then
 309                         clean_abort "Patch format $patch_format is not supported."
 310                 else
 311                         clean_abort "Patch format detection failed."
 312                 fi
 313                 ;;
 314         esac
 315 }
 316
 317 prec=4
 318 dotest="$GIT_DIR/rebase-apply"
 319 sign= utf8=t keep= keepcr= skip= interactive= resolved= rebasing= abort=
 320 resolvemsg= resume= scissors= no_inbody_headers=
 321 git_apply_opt=
 322 committer_date_is_author_date=
 323 ignore_date=
 324 allow_rerere_autoupdate=
 325
 326 if test "$(git config --bool --get am.keepcr)" = true
 327 then
 328     keepcr=t
 329 fi
 330
 331 while test $# != 0
 332 do
 333         case "$1" in
 334         -i|--interactive)
 335                 interactive=t ;;
 336         -b|--binary)
 337                 : ;;
 338         -3|--3way)
 339                 threeway=t ;;
 340         -s|--signoff)
 341                 sign=t ;;
 342         -u|--utf8)
 343                 utf8=t ;; # this is now default
 344         --no-utf8)
 345                 utf8= ;;
 346         -k|--keep)
 347                 keep=t ;;
 348         -c|--scissors)
 349                 scissors=t ;;
 350         --no-scissors)
 351                 scissors=f ;;
 352         -r|--resolved|--continue)
 353                 resolved=t ;;
 354         --skip)
 355                 skip=t ;;
 356         --abort)
 357                 abort=t ;;
 358         --rebasing)
 359                 rebasing=t threeway=t keep=t scissors=f no_inbody_headers=t ;;
 360         -d|--dotest)
 361                 die "-d option is no longer supported.  Do not use."
 362                 ;;
 363         --resolvemsg)
 364                 shift; resolvemsg=$1 ;;
 365         --whitespace|--directory)
 366                 git_apply_opt="$git_apply_opt $(sq "$1=$2")"; shift ;;
 367         -C|-p)
 368                 git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
 369         --patch-format)
 370                 shift ; patch_format="$1" ;;
 371         --reject|--ignore-whitespace|--ignore-space-change)
 372                 git_apply_opt="$git_apply_opt $1" ;;
 373         --committer-date-is-author-date)
 374                 committer_date_is_author_date=t ;;
 375         --ignore-date)
 376                 ignore_date=t ;;
 377         --rerere-autoupdate|--no-rerere-autoupdate)
 378                 allow_rerere_autoupdate="$1" ;;
 379         -q|--quiet)
 380                 GIT_QUIET=t ;;
 381         --keep-cr)
 382                 keepcr=t ;;
 383         --no-keep-cr)
 384                 keepcr=f ;;
 385         --)
 386                 shift; break ;;
 387         *)
 388                 usage ;;
 389         esac
 390         shift
 391 done
 392
 393 # If the dotest directory exists, but we have finished applying all the
 394 # patches in them, clear it out.
 395 if test -d "$dotest" &&
 396    last=$(cat "$dotest/last") &&
 397    next=$(cat "$dotest/next") &&
 398    test $# != 0 &&
 399    test "$next" -gt "$last"
 400 then
 401    rm -fr "$dotest"
 402 fi
 403
 404 if test -d "$dotest"
 405 then
 406         case "$#,$skip$resolved$abort" in
 407         0,*t*)
 408                 # Explicit resume command and we do not have file, so
 409                 # we are happy.
 410                 : ;;
 411         0,)
 412                 # No file input but without resume parameters; catch
 413                 # user error to feed us a patch from standard input
 414                 # when there is already $dotest.  This is somewhat
 415                 # unreliable -- stdin could be /dev/null for example
 416                 # and the caller did not intend to feed us a patch but
 417                 # wanted to continue unattended.
 418                 test -t 0
 419                 ;;
 420         *)
 421                 false
 422                 ;;
 423         esac ||
 424         die "previous rebase directory $dotest still exists but mbox given."
 425         resume=yes
 426
 427         case "$skip,$abort" in
 428         t,t)
 429                 die "Please make up your mind. --skip or --abort?"
 430                 ;;
 431         t,)
 432                 git rerere clear
 433                 git read-tree --reset -u HEAD HEAD
 434                 orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
 435                 git reset HEAD
 436                 git update-ref ORIG_HEAD $orig_head
 437                 ;;
 438         ,t)
 439                 if test -f "$dotest/rebasing"
 440                 then
 441                         exec git rebase --abort
 442                 fi
 443                 git rerere clear
 444                 if safe_to_abort
 445                 then
 446                         git read-tree --reset -u HEAD ORIG_HEAD
 447                         git reset ORIG_HEAD
 448                 fi
 449                 rm -fr "$dotest"
 450                 exit ;;
 451         esac
 452         rm -f "$dotest/dirtyindex"
 453 else
 454         # Make sure we are not given --skip, --resolved, nor --abort
 455         test "$skip$resolved$abort" = "" ||
 456                 die "Resolve operation not in progress, we are not resuming."
 457
 458         # Start afresh.
 459         mkdir -p "$dotest" || exit
 460
 461         if test -n "$prefix" && test $# != 0
 462         then
 463                 first=t
 464                 for arg
 465                 do
 466                         test -n "$first" && {
 467                                 set x
 468                                 first=
 469                         }
 470                         if is_absolute_path "$arg"
 471                         then
 472                                 set "$@" "$arg"
 473                         else
 474                                 set "$@" "$prefix$arg"
 475                         fi
 476                 done
 477                 shift
 478         fi
 479
 480         check_patch_format "$@"
 481
 482         split_patches "$@"
 483
 484         # -i can and must be given when resuming; everything
 485         # else is kept
 486         echo " $git_apply_opt" >"$dotest/apply-opt"
 487         echo "$threeway" >"$dotest/threeway"
 488         echo "$sign" >"$dotest/sign"
 489         echo "$utf8" >"$dotest/utf8"
 490         echo "$keep" >"$dotest/keep"
 491         echo "$keepcr" >"$dotest/keepcr"
 492         echo "$scissors" >"$dotest/scissors"
 493         echo "$no_inbody_headers" >"$dotest/no_inbody_headers"
 494         echo "$GIT_QUIET" >"$dotest/quiet"
 495         echo 1 >"$dotest/next"
 496         if test -n "$rebasing"
 497         then
 498                 : >"$dotest/rebasing"
 499         else
 500                 : >"$dotest/applying"
 501                 if test -n "$HAS_HEAD"
 502                 then
 503                         git update-ref ORIG_HEAD HEAD
 504                 else
 505                         git update-ref -d ORIG_HEAD >/dev/null 2>&1
 506                 fi
 507         fi
 508 fi
 509
 510 git update-index -q --refresh
 511
 512 case "$resolved" in
 513 '')
 514         case "$HAS_HEAD" in
 515         '')
 516                 files=$(git ls-files) ;;
 517         ?*)
 518                 files=$(git diff-index --cached --name-only HEAD --) ;;
 519         esac || exit
 520         if test "$files"
 521         then
 522                 test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
 523                 die "Dirty index: cannot apply patches (dirty: $files)"
 524         fi
 525 esac
 526
 527 if test "$(cat "$dotest/utf8")" = t
 528 then
 529         utf8=-u
 530 else
 531         utf8=-n
 532 fi
 533 if test "$(cat "$dotest/keep")" = t
 534 then
 535         keep=-k
 536 fi
 537 case "$(cat "$dotest/keepcr")" in
 538 t)
 539         keepcr=--keep-cr ;;
 540 f)
 541         keepcr=--no-keep-cr ;;
 542 esac
 543 case "$(cat "$dotest/scissors")" in
 544 t)
 545         scissors=--scissors ;;
 546 f)
 547         scissors=--no-scissors ;;
 548 esac
 549 if test "$(cat "$dotest/no_inbody_headers")" = t
 550 then
 551         no_inbody_headers=--no-inbody-headers
 552 else
 553         no_inbody_headers=
 554 fi
 555 if test "$(cat "$dotest/quiet")" = t
 556 then
 557         GIT_QUIET=t
 558 fi
 559 if test "$(cat "$dotest/threeway")" = t
 560 then
 561         threeway=t
 562 fi
 563 git_apply_opt=$(cat "$dotest/apply-opt")
 564 if test "$(cat "$dotest/sign")" = t
 565 then
 566         SIGNOFF=`git var GIT_COMMITTER_IDENT | sed -e '
 567                         s/>.*/>/
 568                         s/^/Signed-off-by: /'
 569                 `
 570 else
 571         SIGNOFF=
 572 fi
 573
 574 last=`cat "$dotest/last"`
 575 this=`cat "$dotest/next"`
 576 if test "$skip" = t
 577 then
 578         this=`expr "$this" + 1`
 579         resume=
 580 fi
 581
 582 while test "$this" -le "$last"
 583 do
 584         msgnum=`printf "%0${prec}d" $this`
 585         next=`expr "$this" + 1`
 586         test -f "$dotest/$msgnum" || {
 587                 resume=
 588                 go_next
 589                 continue
 590         }
 591
 592         # If we are not resuming, parse and extract the patch information
 593         # into separate files:
 594         #  - info records the authorship and title
 595         #  - msg is the rest of commit log message
 596         #  - patch is the patch body.
 597         #
 598         # When we are resuming, these files are either already prepared
 599         # by the user, or the user can tell us to do so by --resolved flag.
 600         case "$resume" in
 601         '')
 602                 git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
 603                         <"$dotest/$msgnum" >"$dotest/info" ||
 604                         stop_here $this
 605
 606                 # skip pine's internal folder data
 607                 sane_grep '^Author: Mail System Internal Data$' \
 608                         <"$dotest"/info >/dev/null &&
 609                         go_next && continue
 610
 611                 test -s "$dotest/patch" || {
 612                         echo "Patch is empty.  Was it split wrong?"
 613                         echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
 614                         echo "To restore the original branch and stop patching run \"$cmdline --abort\"."
 615                         stop_here $this
 616                 }
 617                 rm -f "$dotest/original-commit" "$dotest/author-script"
 618                 if test -f "$dotest/rebasing" &&
 619                         commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
 620                                 -e q "$dotest/$msgnum") &&
 621                         test "$(git cat-file -t "$commit")" = commit
 622                 then
 623                         git cat-file commit "$commit" |
 624                         sed -e '1,/^$/d' >"$dotest/msg-clean"
 625                         echo "$commit" > "$dotest/original-commit"
 626                         get_author_ident_from_commit "$commit" > "$dotest/author-script"
 627                 else
 628                         {
 629                                 sed -n '/^Subject/ s/Subject: //p' "$dotest/info"
 630                                 echo
 631                                 cat "$dotest/msg"
 632                         } |
 633                         git stripspace > "$dotest/msg-clean"
 634                 fi
 635                 ;;
 636         esac
 637
 638         if test -f "$dotest/author-script"
 639         then
 640                 eval $(cat "$dotest/author-script")
 641         else
 642                 GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 643                 GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 644                 GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 645         fi
 646
 647         if test -z "$GIT_AUTHOR_EMAIL"
 648         then
 649                 echo "Patch does not have a valid e-mail address."
 650                 stop_here $this
 651         fi
 652
 653         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 654
 655         case "$resume" in
 656         '')
 657             if test '' != "$SIGNOFF"
 658             then
 659                 LAST_SIGNED_OFF_BY=`
 660                     sed -ne '/^Signed-off-by: /p' \
 661                     "$dotest/msg-clean" |
 662                     sed -ne '$p'
 663                 `
 664                 ADD_SIGNOFF=`
 665                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 666                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 667                     echo "$SIGNOFF"
 668                 }`
 669             else
 670                 ADD_SIGNOFF=
 671             fi
 672             {
 673                 if test -s "$dotest/msg-clean"
 674                 then
 675                         cat "$dotest/msg-clean"
 676                 fi
 677                 if test '' != "$ADD_SIGNOFF"
 678                 then
 679                         echo "$ADD_SIGNOFF"
 680                 fi
 681             } >"$dotest/final-commit"
 682             ;;
 683         *)
 684                 case "$resolved$interactive" in
 685                 tt)
 686                         # This is used only for interactive view option.
 687                         git diff-index -p --cached HEAD -- >"$dotest/patch"
 688                         ;;
 689                 esac
 690         esac
 691
 692         resume=
 693         if test "$interactive" = t
 694         then
 695             test -t 0 ||
 696             die "cannot be interactive without stdin connected to a terminal."
 697             action=again
 698             while test "$action" = again
 699             do
 700                 echo "Commit Body is:"
 701                 echo "--------------------------"
 702                 cat "$dotest/final-commit"
 703                 echo "--------------------------"
 704                 printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 705                 read reply
 706                 case "$reply" in
 707                 [yY]*) action=yes ;;
 708                 [aA]*) action=yes interactive= ;;
 709                 [nN]*) action=skip ;;
 710                 [eE]*) git_editor "$dotest/final-commit"
 711                        action=again ;;
 712                 [vV]*) action=again
 713                        git_pager "$dotest/patch" ;;
 714                 *)     action=again ;;
 715                 esac
 716             done
 717         else
 718             action=yes
 719         fi
 720
 721         if test -f "$dotest/final-commit"
 722         then
 723                 FIRSTLINE=$(sed 1q "$dotest/final-commit")
 724         else
 725                 FIRSTLINE=""
 726         fi
 727
 728         if test $action = skip
 729         then
 730                 go_next
 731                 continue
 732         fi
 733
 734         if test -x "$GIT_DIR"/hooks/applypatch-msg
 735         then
 736                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 737                 stop_here $this
 738         fi
 739
 740         say "Applying: $FIRSTLINE"
 741
 742         case "$resolved" in
 743         '')
 744                 # When we are allowed to fall back to 3-way later, don't give
 745                 # false errors during the initial attempt.
 746                 squelch=
 747                 if test "$threeway" = t
 748                 then
 749                         squelch='>/dev/null 2>&1 '
 750                 fi
 751                 eval "git apply $squelch$git_apply_opt"' --index "$dotest/patch"'
 752                 apply_status=$?
 753                 ;;
 754         t)
 755                 # Resolved means the user did all the hard work, and
 756                 # we do not have to do any patch application.  Just
 757                 # trust what the user has in the index file and the
 758                 # working tree.
 759                 resolved=
 760                 git diff-index --quiet --cached HEAD -- && {
 761                         echo "No changes - did you forget to use 'git add'?"
 762                         echo "If there is nothing left to stage, chances are that something else"
 763                         echo "already introduced the same changes; you might want to skip this patch."
 764                         stop_here_user_resolve $this
 765                 }
 766                 unmerged=$(git ls-files -u)
 767                 if test -n "$unmerged"
 768                 then
 769                         echo "You still have unmerged paths in your index"
 770                         echo "did you forget to use 'git add'?"
 771                         stop_here_user_resolve $this
 772                 fi
 773                 apply_status=0
 774                 git rerere
 775                 ;;
 776         esac
 777
 778         if test $apply_status != 0 && test "$threeway" = t
 779         then
 780                 if (fall_back_3way)
 781                 then
 782                     # Applying the patch to an earlier tree and merging the
 783                     # result may have produced the same tree as ours.
 784                     git diff-index --quiet --cached HEAD -- && {
 785                         say No changes -- Patch already applied.
 786                         go_next
 787                         continue
 788                     }
 789                     # clear apply_status -- we have successfully merged.
 790                     apply_status=0
 791                 fi
 792         fi
 793         if test $apply_status != 0
 794         then
 795                 printf 'Patch failed at %s %s\n' "$msgnum" "$FIRSTLINE"
 796                 stop_here_user_resolve $this
 797         fi
 798
 799         if test -x "$GIT_DIR"/hooks/pre-applypatch
 800         then
 801                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 802         fi
 803
 804         tree=$(git write-tree) &&
 805         commit=$(
 806                 if test -n "$ignore_date"
 807                 then
 808                         GIT_AUTHOR_DATE=
 809                 fi
 810                 parent=$(git rev-parse --verify -q HEAD) ||
 811                 say >&2 "applying to an empty history"
 812
 813                 if test -n "$committer_date_is_author_date"
 814                 then
 815                         GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
 816                         export GIT_COMMITTER_DATE
 817                 fi &&
 818                 git commit-tree $tree ${parent:+-p} $parent <"$dotest/final-commit"
 819         ) &&
 820         git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
 821         stop_here $this
 822
 823         if test -f "$dotest/original-commit"; then
 824                 echo "$(cat "$dotest/original-commit") $commit" >> "$dotest/rewritten"
 825         fi
 826
 827         if test -x "$GIT_DIR"/hooks/post-applypatch
 828         then
 829                 "$GIT_DIR"/hooks/post-applypatch
 830         fi
 831
 832         go_next
 833 done
 834
 835 if test -s "$dotest"/rewritten; then
 836     git notes copy --for-rewrite=rebase < "$dotest"/rewritten
 837     if test -x "$GIT_DIR"/hooks/post-rewrite; then
 838         "$GIT_DIR"/hooks/post-rewrite rebase < "$dotest"/rewritten
 839     fi
 840 fi
 841
 842 rm -fr "$dotest"
 843 git gc --auto