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] (--continue | --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-non-patch  pass -b flag to git-mailinfo
  19 keep-cr         pass --keep-cr flag to git-mailsplit for mbox format
  20 no-keep-cr      do not pass --keep-cr flag to git-mailsplit independent of am.keepcr
  21 c,scissors      strip everything before a scissors line
  22 whitespace=     pass it through git-apply
  23 ignore-space-change pass it through git-apply
  24 ignore-whitespace pass it through git-apply
  25 directory=      pass it through git-apply
  26 exclude=        pass it through git-apply
  27 include=        pass it through git-apply
  28 C=              pass it through git-apply
  29 p=              pass it through git-apply
  30 patch-format=   format the patch(es) are in
  31 reject          pass it through git-apply
  32 resolvemsg=     override error message when patch failure occurs
  33 continue        continue applying patches after resolving a conflict
  34 r,resolved      synonyms for --continue
  35 skip            skip the current patch
  36 abort           restore the original branch and abort the patching operation.
  37 committer-date-is-author-date    lie about committer date
  38 ignore-date     use current timestamp for author date
  39 rerere-autoupdate update the index with reused conflict resolution if possible
  40 rebasing*       (internal use for git-rebase)"
  41
  42 . git-sh-setup
  43 . git-sh-i18n
  44 prefix=$(git rev-parse --show-prefix)
  45 set_reflog_action am
  46 require_work_tree
  47 cd_to_toplevel
  48
  49 git var GIT_COMMITTER_IDENT >/dev/null ||
  50         die "$(gettext "You need to set your committer info first")"
  51
  52 if git rev-parse --verify -q HEAD >/dev/null
  53 then
  54         HAS_HEAD=yes
  55 else
  56         HAS_HEAD=
  57 fi
  58
  59 cmdline="git am"
  60 if test '' != "$interactive"
  61 then
  62         cmdline="$cmdline -i"
  63 fi
  64 if test '' != "$threeway"
  65 then
  66         cmdline="$cmdline -3"
  67 fi
  68
  69 sq () {
  70         git rev-parse --sq-quote "$@"
  71 }
  72
  73 stop_here () {
  74     echo "$1" >"$dotest/next"
  75     git rev-parse --verify -q HEAD >"$dotest/abort-safety"
  76     exit 1
  77 }
  78
  79 safe_to_abort () {
  80         if test -f "$dotest/dirtyindex"
  81         then
  82                 return 1
  83         fi
  84
  85         if ! test -s "$dotest/abort-safety"
  86         then
  87                 return 0
  88         fi
  89
  90         abort_safety=$(cat "$dotest/abort-safety")
  91         if test "z$(git rev-parse --verify -q HEAD)" = "z$abort_safety"
  92         then
  93                 return 0
  94         fi
  95         gettextln "You seem to have moved HEAD since the last 'am' failure.
  96 Not rewinding to ORIG_HEAD" >&2
  97         return 1
  98 }
  99
 100 stop_here_user_resolve () {
 101     if [ -n "$resolvemsg" ]; then
 102             printf '%s\n' "$resolvemsg"
 103             stop_here $1
 104     fi
 105     eval_gettextln "When you have resolved this problem, run \"\$cmdline --continue\".
 106 If you prefer to skip this patch, run \"\$cmdline --skip\" instead.
 107 To restore the original branch and stop patching, run \"\$cmdline --abort\"."
 108
 109     stop_here $1
 110 }
 111
 112 go_next () {
 113         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
 114                 "$dotest/patch" "$dotest/info"
 115         echo "$next" >"$dotest/next"
 116         this=$next
 117 }
 118
 119 cannot_fallback () {
 120         echo "$1"
 121         gettextln "Cannot fall back to three-way merge."
 122         exit 1
 123 }
 124
 125 fall_back_3way () {
 126     O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
 127
 128     rm -fr "$dotest"/patch-merge-*
 129     mkdir "$dotest/patch-merge-tmp-dir"
 130
 131     # First see if the patch records the index info that we can use.
 132     cmd="git apply $git_apply_opt --build-fake-ancestor" &&
 133     cmd="$cmd "'"$dotest/patch-merge-tmp-index" "$dotest/patch"' &&
 134     eval "$cmd" &&
 135     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 136     git write-tree >"$dotest/patch-merge-base+" ||
 137     cannot_fallback "$(gettext "Repository lacks necessary blobs to fall back on 3-way merge.")"
 138
 139     say "$(gettext "Using index info to reconstruct a base tree...")"
 140
 141     cmd='GIT_INDEX_FILE="$dotest/patch-merge-tmp-index"'
 142
 143     if test -z "$GIT_QUIET"
 144     then
 145         eval "$cmd git diff-index --cached --diff-filter=AM --name-status HEAD"
 146     fi
 147
 148     cmd="$cmd git apply --cached $git_apply_opt"' <"$dotest/patch"'
 149     if eval "$cmd"
 150     then
 151         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 152         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
 153     else
 154         cannot_fallback "$(gettext "Did you hand edit your patch?
 155 It does not apply to blobs recorded in its index.")"
 156     fi
 157
 158     test -f "$dotest/patch-merge-index" &&
 159     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
 160     orig_tree=$(cat "$dotest/patch-merge-base") &&
 161     rm -fr "$dotest"/patch-merge-* || exit 1
 162
 163     say "$(gettext "Falling back to patching base and 3-way merge...")"
 164
 165     # This is not so wrong.  Depending on which base we picked,
 166     # orig_tree may be wildly different from ours, but his_tree
 167     # has the same set of wildly different changes in parts the
 168     # patch did not touch, so recursive ends up canceling them,
 169     # saying that we reverted all those changes.
 170
 171     eval GITHEAD_$his_tree='"$FIRSTLINE"'
 172     export GITHEAD_$his_tree
 173     if test -n "$GIT_QUIET"
 174     then
 175             GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
 176     fi
 177     git-merge-recursive $orig_tree -- HEAD $his_tree || {
 178             git rerere $allow_rerere_autoupdate
 179             die "$(gettext "Failed to merge in the changes.")"
 180     }
 181     unset GITHEAD_$his_tree
 182 }
 183
 184 clean_abort () {
 185         test $# = 0 || echo >&2 "$@"
 186         rm -fr "$dotest"
 187         exit 1
 188 }
 189
 190 patch_format=
 191
 192 check_patch_format () {
 193         # early return if patch_format was set from the command line
 194         if test -n "$patch_format"
 195         then
 196                 return 0
 197         fi
 198
 199         # we default to mbox format if input is from stdin and for
 200         # directories
 201         if test $# = 0 || test "x$1" = "x-" || test -d "$1"
 202         then
 203                 patch_format=mbox
 204                 return 0
 205         fi
 206
 207         # otherwise, check the first few non-blank lines of the first
 208         # patch to try to detect its format
 209         {
 210                 # Start from first line containing non-whitespace
 211                 l1=
 212                 while test -z "$l1"
 213                 do
 214                         read l1 || break
 215                 done
 216                 read l2
 217                 read l3
 218                 case "$l1" in
 219                 "From "* | "From: "*)
 220                         patch_format=mbox
 221                         ;;
 222                 '# This series applies on GIT commit'*)
 223                         patch_format=stgit-series
 224                         ;;
 225                 "# HG changeset patch")
 226                         patch_format=hg
 227                         ;;
 228                 *)
 229                         # if the second line is empty and the third is
 230                         # a From, Author or Date entry, this is very
 231                         # likely an StGIT patch
 232                         case "$l2,$l3" in
 233                         ,"From: "* | ,"Author: "* | ,"Date: "*)
 234                                 patch_format=stgit
 235                                 ;;
 236                         *)
 237                                 ;;
 238                         esac
 239                         ;;
 240                 esac
 241                 if test -z "$patch_format" &&
 242                         test -n "$l1" &&
 243                         test -n "$l2" &&
 244                         test -n "$l3"
 245                 then
 246                         # This begins with three non-empty lines.  Is this a
 247                         # piece of e-mail a-la RFC2822?  Grab all the headers,
 248                         # discarding the indented remainder of folded lines,
 249                         # and see if it looks like that they all begin with the
 250                         # header field names...
 251                         tr -d '\015' <"$1" |
 252                         sed -n -e '/^$/q' -e '/^[       ]/d' -e p |
 253                         sane_egrep -v '^[!-9;-~]+:' >/dev/null ||
 254                         patch_format=mbox
 255                 fi
 256         } < "$1" || clean_abort
 257 }
 258
 259 split_patches () {
 260         case "$patch_format" in
 261         mbox)
 262                 if test t = "$keepcr"
 263                 then
 264                     keep_cr=--keep-cr
 265                 else
 266                     keep_cr=
 267                 fi
 268                 git mailsplit -d"$prec" -o"$dotest" -b $keep_cr -- "$@" > "$dotest/last" ||
 269                 clean_abort
 270                 ;;
 271         stgit-series)
 272                 if test $# -ne 1
 273                 then
 274                         clean_abort "$(gettext "Only one StGIT patch series can be applied at once")"
 275                 fi
 276                 series_dir=`dirname "$1"`
 277                 series_file="$1"
 278                 shift
 279                 {
 280                         set x
 281                         while read filename
 282                         do
 283                                 set "$@" "$series_dir/$filename"
 284                         done
 285                         # remove the safety x
 286                         shift
 287                         # remove the arg coming from the first-line comment
 288                         shift
 289                 } < "$series_file" || clean_abort
 290                 # set the patch format appropriately
 291                 patch_format=stgit
 292                 # now handle the actual StGIT patches
 293                 split_patches "$@"
 294                 ;;
 295         stgit)
 296                 this=0
 297                 for stgit in "$@"
 298                 do
 299                         this=`expr "$this" + 1`
 300                         msgnum=`printf "%0${prec}d" $this`
 301                         # Perl version of StGIT parse_patch. The first nonemptyline
 302                         # not starting with Author, From or Date is the
 303                         # subject, and the body starts with the next nonempty
 304                         # line not starting with Author, From or Date
 305                         @@PERL@@ -ne 'BEGIN { $subject = 0 }
 306                                 if ($subject > 1) { print ; }
 307                                 elsif (/^\s+$/) { next ; }
 308                                 elsif (/^Author:/) { s/Author/From/ ; print ;}
 309                                 elsif (/^(From|Date)/) { print ; }
 310                                 elsif ($subject) {
 311                                         $subject = 2 ;
 312                                         print "\n" ;
 313                                         print ;
 314                                 } else {
 315                                         print "Subject: ", $_ ;
 316                                         $subject = 1;
 317                                 }
 318                         ' < "$stgit" > "$dotest/$msgnum" || clean_abort
 319                 done
 320                 echo "$this" > "$dotest/last"
 321                 this=
 322                 msgnum=
 323                 ;;
 324         hg)
 325                 this=0
 326                 for hg in "$@"
 327                 do
 328                         this=$(( $this + 1 ))
 329                         msgnum=$(printf "%0${prec}d" $this)
 330                         # hg stores changeset metadata in #-commented lines preceding
 331                         # the commit message and diff(s). The only metadata we care about
 332                         # are the User and Date (Node ID and Parent are hashes which are
 333                         # only relevant to the hg repository and thus not useful to us)
 334                         # Since we cannot guarantee that the commit message is in
 335                         # git-friendly format, we put no Subject: line and just consume
 336                         # all of the message as the body
 337                         LANG=C LC_ALL=C @@PERL@@ -M'POSIX qw(strftime)' -ne 'BEGIN { $subject = 0 }
 338                                 if ($subject) { print ; }
 339                                 elsif (/^\# User /) { s/\# User/From:/ ; print ; }
 340                                 elsif (/^\# Date /) {
 341                                         my ($hashsign, $str, $time, $tz) = split ;
 342                                         $tz = sprintf "%+05d", (0-$tz)/36;
 343                                         print "Date: " .
 344                                               strftime("%a, %d %b %Y %H:%M:%S ",
 345                                                        localtime($time))
 346                                               . "$tz\n";
 347                                 } elsif (/^\# /) { next ; }
 348                                 else {
 349                                         print "\n", $_ ;
 350                                         $subject = 1;
 351                                 }
 352                         ' <"$hg" >"$dotest/$msgnum" || clean_abort
 353                 done
 354                 echo "$this" >"$dotest/last"
 355                 this=
 356                 msgnum=
 357                 ;;
 358         *)
 359                 if test -n "$patch_format"
 360                 then
 361                         clean_abort "$(eval_gettext "Patch format \$patch_format is not supported.")"
 362                 else
 363                         clean_abort "$(gettext "Patch format detection failed.")"
 364                 fi
 365                 ;;
 366         esac
 367 }
 368
 369 prec=4
 370 dotest="$GIT_DIR/rebase-apply"
 371 sign= utf8=t keep= keepcr= skip= interactive= resolved= rebasing= abort=
 372 resolvemsg= resume= scissors= no_inbody_headers=
 373 git_apply_opt=
 374 committer_date_is_author_date=
 375 ignore_date=
 376 allow_rerere_autoupdate=
 377
 378 if test "$(git config --bool --get am.keepcr)" = true
 379 then
 380     keepcr=t
 381 fi
 382
 383 while test $# != 0
 384 do
 385         case "$1" in
 386         -i|--interactive)
 387                 interactive=t ;;
 388         -b|--binary)
 389                 gettextln >&2 "The -b/--binary option has been a no-op for long time, and
 390 it will be removed. Please do not use it anymore."
 391                 ;;
 392         -3|--3way)
 393                 threeway=t ;;
 394         -s|--signoff)
 395                 sign=t ;;
 396         -u|--utf8)
 397                 utf8=t ;; # this is now default
 398         --no-utf8)
 399                 utf8= ;;
 400         -k|--keep)
 401                 keep=t ;;
 402         --keep-non-patch)
 403                 keep=b ;;
 404         -c|--scissors)
 405                 scissors=t ;;
 406         --no-scissors)
 407                 scissors=f ;;
 408         -r|--resolved|--continue)
 409                 resolved=t ;;
 410         --skip)
 411                 skip=t ;;
 412         --abort)
 413                 abort=t ;;
 414         --rebasing)
 415                 rebasing=t threeway=t ;;
 416         --resolvemsg)
 417                 shift; resolvemsg=$1 ;;
 418         --whitespace|--directory|--exclude|--include)
 419                 git_apply_opt="$git_apply_opt $(sq "$1=$2")"; shift ;;
 420         -C|-p)
 421                 git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
 422         --patch-format)
 423                 shift ; patch_format="$1" ;;
 424         --reject|--ignore-whitespace|--ignore-space-change)
 425                 git_apply_opt="$git_apply_opt $1" ;;
 426         --committer-date-is-author-date)
 427                 committer_date_is_author_date=t ;;
 428         --ignore-date)
 429                 ignore_date=t ;;
 430         --rerere-autoupdate|--no-rerere-autoupdate)
 431                 allow_rerere_autoupdate="$1" ;;
 432         -q|--quiet)
 433                 GIT_QUIET=t ;;
 434         --keep-cr)
 435                 keepcr=t ;;
 436         --no-keep-cr)
 437                 keepcr=f ;;
 438         --)
 439                 shift; break ;;
 440         *)
 441                 usage ;;
 442         esac
 443         shift
 444 done
 445
 446 # If the dotest directory exists, but we have finished applying all the
 447 # patches in them, clear it out.
 448 if test -d "$dotest" &&
 449    test -f "$dotest/last" &&
 450    test -f "$dotest/next" &&
 451    last=$(cat "$dotest/last") &&
 452    next=$(cat "$dotest/next") &&
 453    test $# != 0 &&
 454    test "$next" -gt "$last"
 455 then
 456    rm -fr "$dotest"
 457 fi
 458
 459 if test -d "$dotest" && test -f "$dotest/last" && test -f "$dotest/next"
 460 then
 461         case "$#,$skip$resolved$abort" in
 462         0,*t*)
 463                 # Explicit resume command and we do not have file, so
 464                 # we are happy.
 465                 : ;;
 466         0,)
 467                 # No file input but without resume parameters; catch
 468                 # user error to feed us a patch from standard input
 469                 # when there is already $dotest.  This is somewhat
 470                 # unreliable -- stdin could be /dev/null for example
 471                 # and the caller did not intend to feed us a patch but
 472                 # wanted to continue unattended.
 473                 test -t 0
 474                 ;;
 475         *)
 476                 false
 477                 ;;
 478         esac ||
 479         die "$(eval_gettext "previous rebase directory \$dotest still exists but mbox given.")"
 480         resume=yes
 481
 482         case "$skip,$abort" in
 483         t,t)
 484                 die "$(gettext "Please make up your mind. --skip or --abort?")"
 485                 ;;
 486         t,)
 487                 git rerere clear
 488                 git read-tree --reset -u HEAD HEAD
 489                 orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
 490                 git reset HEAD
 491                 git update-ref ORIG_HEAD $orig_head
 492                 ;;
 493         ,t)
 494                 if test -f "$dotest/rebasing"
 495                 then
 496                         exec git rebase --abort
 497                 fi
 498                 git rerere clear
 499                 if safe_to_abort
 500                 then
 501                         git read-tree --reset -u HEAD ORIG_HEAD
 502                         git reset ORIG_HEAD
 503                 fi
 504                 rm -fr "$dotest"
 505                 exit ;;
 506         esac
 507         rm -f "$dotest/dirtyindex"
 508 else
 509         # Possible stray $dotest directory in the independent-run
 510         # case; in the --rebasing case, it is upto the caller
 511         # (git-rebase--am) to take care of stray directories.
 512         if test -d "$dotest" && test -z "$rebasing"
 513         then
 514                 case "$skip,$resolved,$abort" in
 515                 ,,t)
 516                         rm -fr "$dotest"
 517                         exit 0
 518                         ;;
 519                 *)
 520                         die "$(eval_gettext "Stray \$dotest directory found.
 521 Use \"git am --abort\" to remove it.")"
 522                         ;;
 523                 esac
 524         fi
 525
 526         # Make sure we are not given --skip, --continue, nor --abort
 527         test "$skip$resolved$abort" = "" ||
 528                 die "$(gettext "Resolve operation not in progress, we are not resuming.")"
 529
 530         # Start afresh.
 531         mkdir -p "$dotest" || exit
 532
 533         if test -n "$prefix" && test $# != 0
 534         then
 535                 first=t
 536                 for arg
 537                 do
 538                         test -n "$first" && {
 539                                 set x
 540                                 first=
 541                         }
 542                         if is_absolute_path "$arg"
 543                         then
 544                                 set "$@" "$arg"
 545                         else
 546                                 set "$@" "$prefix$arg"
 547                         fi
 548                 done
 549                 shift
 550         fi
 551
 552         check_patch_format "$@"
 553
 554         split_patches "$@"
 555
 556         # -i can and must be given when resuming; everything
 557         # else is kept
 558         echo " $git_apply_opt" >"$dotest/apply-opt"
 559         echo "$threeway" >"$dotest/threeway"
 560         echo "$sign" >"$dotest/sign"
 561         echo "$utf8" >"$dotest/utf8"
 562         echo "$keep" >"$dotest/keep"
 563         echo "$scissors" >"$dotest/scissors"
 564         echo "$no_inbody_headers" >"$dotest/no_inbody_headers"
 565         echo "$GIT_QUIET" >"$dotest/quiet"
 566         echo 1 >"$dotest/next"
 567         if test -n "$rebasing"
 568         then
 569                 : >"$dotest/rebasing"
 570         else
 571                 : >"$dotest/applying"
 572                 if test -n "$HAS_HEAD"
 573                 then
 574                         git update-ref ORIG_HEAD HEAD
 575                 else
 576                         git update-ref -d ORIG_HEAD >/dev/null 2>&1
 577                 fi
 578         fi
 579 fi
 580
 581 git update-index -q --refresh
 582
 583 case "$resolved" in
 584 '')
 585         case "$HAS_HEAD" in
 586         '')
 587                 files=$(git ls-files) ;;
 588         ?*)
 589                 files=$(git diff-index --cached --name-only HEAD --) ;;
 590         esac || exit
 591         if test "$files"
 592         then
 593                 test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
 594                 die "$(eval_gettext "Dirty index: cannot apply patches (dirty: \$files)")"
 595         fi
 596 esac
 597
 598 # Now, decide what command line options we will give to the git
 599 # commands we invoke, based on the result of parsing command line
 600 # options and previous invocation state stored in $dotest/ files.
 601
 602 if test "$(cat "$dotest/utf8")" = t
 603 then
 604         utf8=-u
 605 else
 606         utf8=-n
 607 fi
 608 keep=$(cat "$dotest/keep")
 609 case "$keep" in
 610 t)
 611         keep=-k ;;
 612 b)
 613         keep=-b ;;
 614 *)
 615         keep= ;;
 616 esac
 617 case "$(cat "$dotest/scissors")" in
 618 t)
 619         scissors=--scissors ;;
 620 f)
 621         scissors=--no-scissors ;;
 622 esac
 623 if test "$(cat "$dotest/no_inbody_headers")" = t
 624 then
 625         no_inbody_headers=--no-inbody-headers
 626 else
 627         no_inbody_headers=
 628 fi
 629 if test "$(cat "$dotest/quiet")" = t
 630 then
 631         GIT_QUIET=t
 632 fi
 633 if test "$(cat "$dotest/threeway")" = t
 634 then
 635         threeway=t
 636 fi
 637 git_apply_opt=$(cat "$dotest/apply-opt")
 638 if test "$(cat "$dotest/sign")" = t
 639 then
 640         SIGNOFF=`git var GIT_COMMITTER_IDENT | sed -e '
 641                         s/>.*/>/
 642                         s/^/Signed-off-by: /'
 643                 `
 644 else
 645         SIGNOFF=
 646 fi
 647
 648 last=`cat "$dotest/last"`
 649 this=`cat "$dotest/next"`
 650 if test "$skip" = t
 651 then
 652         this=`expr "$this" + 1`
 653         resume=
 654 fi
 655
 656 while test "$this" -le "$last"
 657 do
 658         msgnum=`printf "%0${prec}d" $this`
 659         next=`expr "$this" + 1`
 660         test -f "$dotest/$msgnum" || {
 661                 resume=
 662                 go_next
 663                 continue
 664         }
 665
 666         # If we are not resuming, parse and extract the patch information
 667         # into separate files:
 668         #  - info records the authorship and title
 669         #  - msg is the rest of commit log message
 670         #  - patch is the patch body.
 671         #
 672         # When we are resuming, these files are either already prepared
 673         # by the user, or the user can tell us to do so by --continue flag.
 674         case "$resume" in
 675         '')
 676                 if test -f "$dotest/rebasing"
 677                 then
 678                         commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
 679                                 -e q "$dotest/$msgnum") &&
 680                         test "$(git cat-file -t "$commit")" = commit ||
 681                                 stop_here $this
 682                         git cat-file commit "$commit" |
 683                         sed -e '1,/^$/d' >"$dotest/msg-clean"
 684                         echo "$commit" >"$dotest/original-commit"
 685                         get_author_ident_from_commit "$commit" >"$dotest/author-script"
 686                         git diff-tree --root --binary --full-index "$commit" >"$dotest/patch"
 687                 else
 688                         git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
 689                                 <"$dotest/$msgnum" >"$dotest/info" ||
 690                                 stop_here $this
 691
 692                         # skip pine's internal folder data
 693                         sane_grep '^Author: Mail System Internal Data$' \
 694                                 <"$dotest"/info >/dev/null &&
 695                                 go_next && continue
 696
 697                         test -s "$dotest/patch" || {
 698                                 eval_gettextln "Patch is empty.  Was it split wrong?
 699 If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
 700 To restore the original branch and stop patching run \"\$cmdline --abort\"."
 701                                 stop_here $this
 702                         }
 703                         rm -f "$dotest/original-commit" "$dotest/author-script"
 704                         {
 705                                 sed -n '/^Subject/ s/Subject: //p' "$dotest/info"
 706                                 echo
 707                                 cat "$dotest/msg"
 708                         } |
 709                         git stripspace > "$dotest/msg-clean"
 710                 fi
 711                 ;;
 712         esac
 713
 714         if test -f "$dotest/author-script"
 715         then
 716                 eval $(cat "$dotest/author-script")
 717         else
 718                 GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 719                 GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 720                 GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 721         fi
 722
 723         if test -z "$GIT_AUTHOR_EMAIL"
 724         then
 725                 gettextln "Patch does not have a valid e-mail address."
 726                 stop_here $this
 727         fi
 728
 729         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 730
 731         case "$resume" in
 732         '')
 733             if test '' != "$SIGNOFF"
 734             then
 735                 LAST_SIGNED_OFF_BY=`
 736                     sed -ne '/^Signed-off-by: /p' \
 737                     "$dotest/msg-clean" |
 738                     sed -ne '$p'
 739                 `
 740                 ADD_SIGNOFF=`
 741                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 742                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 743                     echo "$SIGNOFF"
 744                 }`
 745             else
 746                 ADD_SIGNOFF=
 747             fi
 748             {
 749                 if test -s "$dotest/msg-clean"
 750                 then
 751                         cat "$dotest/msg-clean"
 752                 fi
 753                 if test '' != "$ADD_SIGNOFF"
 754                 then
 755                         echo "$ADD_SIGNOFF"
 756                 fi
 757             } >"$dotest/final-commit"
 758             ;;
 759         *)
 760                 case "$resolved$interactive" in
 761                 tt)
 762                         # This is used only for interactive view option.
 763                         git diff-index -p --cached HEAD -- >"$dotest/patch"
 764                         ;;
 765                 esac
 766         esac
 767
 768         resume=
 769         if test "$interactive" = t
 770         then
 771             test -t 0 ||
 772             die "$(gettext "cannot be interactive without stdin connected to a terminal.")"
 773             action=again
 774             while test "$action" = again
 775             do
 776                 gettextln "Commit Body is:"
 777                 echo "--------------------------"
 778                 cat "$dotest/final-commit"
 779                 echo "--------------------------"
 780                 # TRANSLATORS: Make sure to include [y], [n], [e], [v] and [a]
 781                 # in your translation. The program will only accept English
 782                 # input at this point.
 783                 gettext "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 784                 read reply
 785                 case "$reply" in
 786                 [yY]*) action=yes ;;
 787                 [aA]*) action=yes interactive= ;;
 788                 [nN]*) action=skip ;;
 789                 [eE]*) git_editor "$dotest/final-commit"
 790                        action=again ;;
 791                 [vV]*) action=again
 792                        git_pager "$dotest/patch" ;;
 793                 *)     action=again ;;
 794                 esac
 795             done
 796         else
 797             action=yes
 798         fi
 799
 800         if test $action = skip
 801         then
 802                 go_next
 803                 continue
 804         fi
 805
 806         if test -x "$GIT_DIR"/hooks/applypatch-msg
 807         then
 808                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 809                 stop_here $this
 810         fi
 811
 812         if test -f "$dotest/final-commit"
 813         then
 814                 FIRSTLINE=$(sed 1q "$dotest/final-commit")
 815         else
 816                 FIRSTLINE=""
 817         fi
 818
 819         say "$(eval_gettext "Applying: \$FIRSTLINE")"
 820
 821         case "$resolved" in
 822         '')
 823                 # When we are allowed to fall back to 3-way later, don't give
 824                 # false errors during the initial attempt.
 825                 squelch=
 826                 if test "$threeway" = t
 827                 then
 828                         squelch='>/dev/null 2>&1 '
 829                 fi
 830                 eval "git apply $squelch$git_apply_opt"' --index "$dotest/patch"'
 831                 apply_status=$?
 832                 ;;
 833         t)
 834                 # Resolved means the user did all the hard work, and
 835                 # we do not have to do any patch application.  Just
 836                 # trust what the user has in the index file and the
 837                 # working tree.
 838                 resolved=
 839                 git diff-index --quiet --cached HEAD -- && {
 840                         gettextln "No changes - did you forget to use 'git add'?
 841 If there is nothing left to stage, chances are that something else
 842 already introduced the same changes; you might want to skip this patch."
 843                         stop_here_user_resolve $this
 844                 }
 845                 unmerged=$(git ls-files -u)
 846                 if test -n "$unmerged"
 847                 then
 848                         gettextln "You still have unmerged paths in your index
 849 did you forget to use 'git add'?"
 850                         stop_here_user_resolve $this
 851                 fi
 852                 apply_status=0
 853                 git rerere
 854                 ;;
 855         esac
 856
 857         if test $apply_status != 0 && test "$threeway" = t
 858         then
 859                 if (fall_back_3way)
 860                 then
 861                     # Applying the patch to an earlier tree and merging the
 862                     # result may have produced the same tree as ours.
 863                     git diff-index --quiet --cached HEAD -- && {
 864                         say "$(gettext "No changes -- Patch already applied.")"
 865                         go_next
 866                         continue
 867                     }
 868                     # clear apply_status -- we have successfully merged.
 869                     apply_status=0
 870                 fi
 871         fi
 872         if test $apply_status != 0
 873         then
 874                 eval_gettextln 'Patch failed at $msgnum $FIRSTLINE'
 875                 if test "$(git config --bool advice.amworkdir)" != false
 876                 then
 877                         eval_gettextln 'The copy of the patch that failed is found in:
 878    $dotest/patch'
 879                 fi
 880                 stop_here_user_resolve $this
 881         fi
 882
 883         if test -x "$GIT_DIR"/hooks/pre-applypatch
 884         then
 885                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 886         fi
 887
 888         tree=$(git write-tree) &&
 889         commit=$(
 890                 if test -n "$ignore_date"
 891                 then
 892                         GIT_AUTHOR_DATE=
 893                 fi
 894                 parent=$(git rev-parse --verify -q HEAD) ||
 895                 say >&2 "$(gettext "applying to an empty history")"
 896
 897                 if test -n "$committer_date_is_author_date"
 898                 then
 899                         GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
 900                         export GIT_COMMITTER_DATE
 901                 fi &&
 902                 git commit-tree $tree ${parent:+-p} $parent <"$dotest/final-commit"
 903         ) &&
 904         git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
 905         stop_here $this
 906
 907         if test -f "$dotest/original-commit"; then
 908                 echo "$(cat "$dotest/original-commit") $commit" >> "$dotest/rewritten"
 909         fi
 910
 911         if test -x "$GIT_DIR"/hooks/post-applypatch
 912         then
 913                 "$GIT_DIR"/hooks/post-applypatch
 914         fi
 915
 916         go_next
 917 done
 918
 919 if test -s "$dotest"/rewritten; then
 920     git notes copy --for-rewrite=rebase < "$dotest"/rewritten
 921     if test -x "$GIT_DIR"/hooks/post-rewrite; then
 922         "$GIT_DIR"/hooks/post-rewrite rebase < "$dotest"/rewritten
 923     fi
 924 fi
 925
 926 # If am was called with --rebasing (from git-rebase--am), it's up to
 927 # the caller to take care of housekeeping.
 928 if ! test -f "$dotest/rebasing"
 929 then
 930         rm -fr "$dotest"
 931         git gc --auto
 932 fi