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