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