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_STUCKLONG=t
   8 OPTIONS_SPEC="\
   9 git am [options] [(<mbox>|<Maildir>)...]
  10 git am [options] (--continue | --skip | --abort)
  11 --
  12 i,interactive   run interactively
  13 b,binary*       (historical option -- no-op)
  14 3,3way          allow fall back on 3way merging if needed
  15 q,quiet         be quiet
  16 s,signoff       add a Signed-off-by line to the commit message
  17 u,utf8          recode into utf8 (default)
  18 k,keep          pass -k flag to git-mailinfo
  19 keep-non-patch  pass -b flag to git-mailinfo
  20 m,message-id    pass -m flag to git-mailinfo
  21 keep-cr         pass --keep-cr flag to git-mailsplit for mbox format
  22 no-keep-cr      do not pass --keep-cr flag to git-mailsplit independent of am.keepcr
  23 c,scissors      strip everything before a scissors line
  24 whitespace=     pass it through git-apply
  25 ignore-space-change pass it through git-apply
  26 ignore-whitespace pass it through git-apply
  27 directory=      pass it through git-apply
  28 exclude=        pass it through git-apply
  29 include=        pass it through git-apply
  30 C=              pass it through git-apply
  31 p=              pass it through git-apply
  32 patch-format=   format the patch(es) are in
  33 reject          pass it through git-apply
  34 resolvemsg=     override error message when patch failure occurs
  35 continue        continue applying patches after resolving a conflict
  36 r,resolved      synonyms for --continue
  37 skip            skip the current patch
  38 abort           restore the original branch and abort the patching operation.
  39 committer-date-is-author-date    lie about committer date
  40 ignore-date     use current timestamp for author date
  41 rerere-autoupdate update the index with reused conflict resolution if possible
  42 S,gpg-sign?     GPG-sign commits
  43 rebasing*       (internal use for git-rebase)"
  44
  45 . git-sh-setup
  46 . git-sh-i18n
  47 prefix=$(git rev-parse --show-prefix)
  48 set_reflog_action am
  49 require_work_tree
  50 cd_to_toplevel
  51
  52 git var GIT_COMMITTER_IDENT >/dev/null ||
  53         die "$(gettext "You need to set your committer info first")"
  54
  55 if git rev-parse --verify -q HEAD >/dev/null
  56 then
  57         HAS_HEAD=yes
  58 else
  59         HAS_HEAD=
  60 fi
  61
  62 cmdline="git am"
  63 if test '' != "$interactive"
  64 then
  65         cmdline="$cmdline -i"
  66 fi
  67 if test '' != "$threeway"
  68 then
  69         cmdline="$cmdline -3"
  70 fi
  71
  72 sq () {
  73         git rev-parse --sq-quote "$@"
  74 }
  75
  76 stop_here () {
  77     echo "$1" >"$dotest/next"
  78     git rev-parse --verify -q HEAD >"$dotest/abort-safety"
  79     exit 1
  80 }
  81
  82 safe_to_abort () {
  83         if test -f "$dotest/dirtyindex"
  84         then
  85                 return 1
  86         fi
  87
  88         if ! test -s "$dotest/abort-safety"
  89         then
  90                 return 0
  91         fi
  92
  93         abort_safety=$(cat "$dotest/abort-safety")
  94         if test "z$(git rev-parse --verify -q HEAD)" = "z$abort_safety"
  95         then
  96                 return 0
  97         fi
  98         gettextln "You seem to have moved HEAD since the last 'am' failure.
  99 Not rewinding to ORIG_HEAD" >&2
 100         return 1
 101 }
 102
 103 stop_here_user_resolve () {
 104     if [ -n "$resolvemsg" ]; then
 105             printf '%s\n' "$resolvemsg"
 106             stop_here $1
 107     fi
 108     eval_gettextln "When you have resolved this problem, run \"\$cmdline --continue\".
 109 If you prefer to skip this patch, run \"\$cmdline --skip\" instead.
 110 To restore the original branch and stop patching, run \"\$cmdline --abort\"."
 111
 112     stop_here $1
 113 }
 114
 115 go_next () {
 116         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
 117                 "$dotest/patch" "$dotest/info"
 118         echo "$next" >"$dotest/next"
 119         this=$next
 120 }
 121
 122 cannot_fallback () {
 123         echo "$1"
 124         gettextln "Cannot fall back to three-way merge."
 125         exit 1
 126 }
 127
 128 fall_back_3way () {
 129     O_OBJECT=$(cd "$GIT_OBJECT_DIRECTORY" && pwd)
 130
 131     rm -fr "$dotest"/patch-merge-*
 132     mkdir "$dotest/patch-merge-tmp-dir"
 133
 134     # First see if the patch records the index info that we can use.
 135     cmd="git apply $git_apply_opt --build-fake-ancestor" &&
 136     cmd="$cmd "'"$dotest/patch-merge-tmp-index" "$dotest/patch"' &&
 137     eval "$cmd" &&
 138     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
 139     git write-tree >"$dotest/patch-merge-base+" ||
 140     cannot_fallback "$(gettext "Repository lacks necessary blobs to fall back on 3-way merge.")"
 141
 142     say "$(gettext "Using index info to reconstruct a base tree...")"
 143
 144     cmd='GIT_INDEX_FILE="$dotest/patch-merge-tmp-index"'
 145
 146     if test -z "$GIT_QUIET"
 147     then
 148         eval "$cmd git diff-index --cached --diff-filter=AM --name-status HEAD"
 149     fi
 150
 151     cmd="$cmd git apply --cached $git_apply_opt"' <"$dotest/patch"'
 152     if eval "$cmd"
 153     then
 154         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 155         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
 156     else
 157         cannot_fallback "$(gettext "Did you hand edit your patch?
 158 It does not apply to blobs recorded in its index.")"
 159     fi
 160
 161     test -f "$dotest/patch-merge-index" &&
 162     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
 163     orig_tree=$(cat "$dotest/patch-merge-base") &&
 164     rm -fr "$dotest"/patch-merge-* || exit 1
 165
 166     say "$(gettext "Falling back to patching base and 3-way merge...")"
 167
 168     # This is not so wrong.  Depending on which base we picked,
 169     # orig_tree may be wildly different from ours, but his_tree
 170     # has the same set of wildly different changes in parts the
 171     # patch did not touch, so recursive ends up canceling them,
 172     # saying that we reverted all those changes.
 173
 174     eval GITHEAD_$his_tree='"$FIRSTLINE"'
 175     export GITHEAD_$his_tree
 176     if test -n "$GIT_QUIET"
 177     then
 178             GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
 179     fi
 180     git-merge-recursive $orig_tree -- HEAD $his_tree || {
 181             git rerere $allow_rerere_autoupdate
 182             die "$(gettext "Failed to merge in the changes.")"
 183     }
 184     unset GITHEAD_$his_tree
 185 }
 186
 187 clean_abort () {
 188         test $# = 0 || echo >&2 "$@"
 189         rm -fr "$dotest"
 190         exit 1
 191 }
 192
 193 patch_format=
 194
 195 check_patch_format () {
 196         # early return if patch_format was set from the command line
 197         if test -n "$patch_format"
 198         then
 199                 return 0
 200         fi
 201
 202         # we default to mbox format if input is from stdin and for
 203         # directories
 204         if test $# = 0 || test "x$1" = "x-" || test -d "$1"
 205         then
 206                 patch_format=mbox
 207                 return 0
 208         fi
 209
 210         # otherwise, check the first few non-blank lines of the first
 211         # patch to try to detect its format
 212         {
 213                 # Start from first line containing non-whitespace
 214                 l1=
 215                 while test -z "$l1"
 216                 do
 217                         read l1 || break
 218                 done
 219                 read l2
 220                 read l3
 221                 case "$l1" in
 222                 "From "* | "From: "*)
 223                         patch_format=mbox
 224                         ;;
 225                 '# This series applies on GIT commit'*)
 226                         patch_format=stgit-series
 227                         ;;
 228                 "# HG changeset patch")
 229                         patch_format=hg
 230                         ;;
 231                 *)
 232                         # if the second line is empty and the third is
 233                         # a From, Author or Date entry, this is very
 234                         # likely an StGIT patch
 235                         case "$l2,$l3" in
 236                         ,"From: "* | ,"Author: "* | ,"Date: "*)
 237                                 patch_format=stgit
 238                                 ;;
 239                         *)
 240                                 ;;
 241                         esac
 242                         ;;
 243                 esac
 244                 if test -z "$patch_format" &&
 245                         test -n "$l1" &&
 246                         test -n "$l2" &&
 247                         test -n "$l3"
 248                 then
 249                         # This begins with three non-empty lines.  Is this a
 250                         # piece of e-mail a-la RFC2822?  Grab all the headers,
 251                         # discarding the indented remainder of folded lines,
 252                         # and see if it looks like that they all begin with the
 253                         # header field names...
 254                         tr -d '\015' <"$1" |
 255                         sed -n -e '/^$/q' -e '/^[       ]/d' -e p |
 256                         sane_egrep -v '^[!-9;-~]+:' >/dev/null ||
 257                         patch_format=mbox
 258                 fi
 259         } < "$1" || clean_abort
 260 }
 261
 262 split_patches () {
 263         case "$patch_format" in
 264         mbox)
 265                 if test t = "$keepcr"
 266                 then
 267                     keep_cr=--keep-cr
 268                 else
 269                     keep_cr=
 270                 fi
 271                 git mailsplit -d"$prec" -o"$dotest" -b $keep_cr -- "$@" > "$dotest/last" ||
 272                 clean_abort
 273                 ;;
 274         stgit-series)
 275                 if test $# -ne 1
 276                 then
 277                         clean_abort "$(gettext "Only one StGIT patch series can be applied at once")"
 278                 fi
 279                 series_dir=$(dirname "$1")
 280                 series_file="$1"
 281                 shift
 282                 {
 283                         set x
 284                         while read filename
 285                         do
 286                                 set "$@" "$series_dir/$filename"
 287                         done
 288                         # remove the safety x
 289                         shift
 290                         # remove the arg coming from the first-line comment
 291                         shift
 292                 } < "$series_file" || clean_abort
 293                 # set the patch format appropriately
 294                 patch_format=stgit
 295                 # now handle the actual StGIT patches
 296                 split_patches "$@"
 297                 ;;
 298         stgit)
 299                 this=0
 300                 test 0 -eq "$#" && set -- -
 301                 for stgit in "$@"
 302                 do
 303                         this=$(expr "$this" + 1)
 304                         msgnum=$(printf "%0${prec}d" $this)
 305                         # Perl version of StGIT parse_patch. The first nonemptyline
 306                         # not starting with Author, From or Date is the
 307                         # subject, and the body starts with the next nonempty
 308                         # line not starting with Author, From or Date
 309                         @@PERL@@ -ne 'BEGIN { $subject = 0 }
 310                                 if ($subject > 1) { print ; }
 311                                 elsif (/^\s+$/) { next ; }
 312                                 elsif (/^Author:/) { s/Author/From/ ; print ;}
 313                                 elsif (/^(From|Date)/) { print ; }
 314                                 elsif ($subject) {
 315                                         $subject = 2 ;
 316                                         print "\n" ;
 317                                         print ;
 318                                 } else {
 319                                         print "Subject: ", $_ ;
 320                                         $subject = 1;
 321                                 }
 322                         ' -- "$stgit" >"$dotest/$msgnum" || clean_abort
 323                 done
 324                 echo "$this" > "$dotest/last"
 325                 this=
 326                 msgnum=
 327                 ;;
 328         hg)
 329                 this=0
 330                 for hg in "$@"
 331                 do
 332                         this=$(( $this + 1 ))
 333                         msgnum=$(printf "%0${prec}d" $this)
 334                         # hg stores changeset metadata in #-commented lines preceding
 335                         # the commit message and diff(s). The only metadata we care about
 336                         # are the User and Date (Node ID and Parent are hashes which are
 337                         # only relevant to the hg repository and thus not useful to us)
 338                         # Since we cannot guarantee that the commit message is in
 339                         # git-friendly format, we put no Subject: line and just consume
 340                         # all of the message as the body
 341                         LANG=C LC_ALL=C @@PERL@@ -M'POSIX qw(strftime)' -ne 'BEGIN { $subject = 0 }
 342                                 if ($subject) { print ; }
 343                                 elsif (/^\# User /) { s/\# User/From:/ ; print ; }
 344                                 elsif (/^\# Date /) {
 345                                         my ($hashsign, $str, $time, $tz) = split ;
 346                                         $tz_str = sprintf "%+05d", (0-$tz)/36;
 347                                         print "Date: " .
 348                                               strftime("%a, %d %b %Y %H:%M:%S ",
 349                                                        gmtime($time-$tz))
 350                                               . "$tz_str\n";
 351                                 } elsif (/^\# /) { next ; }
 352                                 else {
 353                                         print "\n", $_ ;
 354                                         $subject = 1;
 355                                 }
 356                         ' <"$hg" >"$dotest/$msgnum" || clean_abort
 357                 done
 358                 echo "$this" >"$dotest/last"
 359                 this=
 360                 msgnum=
 361                 ;;
 362         *)
 363                 if test -n "$patch_format"
 364                 then
 365                         clean_abort "$(eval_gettext "Patch format \$patch_format is not supported.")"
 366                 else
 367                         clean_abort "$(gettext "Patch format detection failed.")"
 368                 fi
 369                 ;;
 370         esac
 371 }
 372
 373 prec=4
 374 dotest="$GIT_DIR/rebase-apply"
 375 sign= utf8=t keep= keepcr= skip= interactive= resolved= rebasing= abort=
 376 messageid= resolvemsg= resume= scissors= no_inbody_headers=
 377 git_apply_opt=
 378 committer_date_is_author_date=
 379 ignore_date=
 380 allow_rerere_autoupdate=
 381 gpg_sign_opt=
 382
 383 if test "$(git config --bool --get am.messageid)" = true
 384 then
 385     messageid=t
 386 fi
 387
 388 if test "$(git config --bool --get am.keepcr)" = true
 389 then
 390     keepcr=t
 391 fi
 392
 393 while test $# != 0
 394 do
 395         case "$1" in
 396         -i|--interactive)
 397                 interactive=t ;;
 398         -b|--binary)
 399                 gettextln >&2 "The -b/--binary option has been a no-op for long time, and
 400 it will be removed. Please do not use it anymore."
 401                 ;;
 402         -3|--3way)
 403                 threeway=t ;;
 404         -s|--signoff)
 405                 sign=t ;;
 406         -u|--utf8)
 407                 utf8=t ;; # this is now default
 408         --no-utf8)
 409                 utf8= ;;
 410         -m|--message-id)
 411                 messageid=t ;;
 412         --no-message-id)
 413                 messageid=f ;;
 414         -k|--keep)
 415                 keep=t ;;
 416         --keep-non-patch)
 417                 keep=b ;;
 418         -c|--scissors)
 419                 scissors=t ;;
 420         --no-scissors)
 421                 scissors=f ;;
 422         -r|--resolved|--continue)
 423                 resolved=t ;;
 424         --skip)
 425                 skip=t ;;
 426         --abort)
 427                 abort=t ;;
 428         --rebasing)
 429                 rebasing=t threeway=t ;;
 430         --resolvemsg=*)
 431                 resolvemsg="${1#--resolvemsg=}" ;;
 432         --whitespace=*|--directory=*|--exclude=*|--include=*)
 433                 git_apply_opt="$git_apply_opt $(sq "$1")" ;;
 434         -C*|-p*)
 435                 git_apply_opt="$git_apply_opt $(sq "$1")" ;;
 436         --patch-format=*)
 437                 patch_format="${1#--patch-format=}" ;;
 438         --reject|--ignore-whitespace|--ignore-space-change)
 439                 git_apply_opt="$git_apply_opt $1" ;;
 440         --committer-date-is-author-date)
 441                 committer_date_is_author_date=t ;;
 442         --ignore-date)
 443                 ignore_date=t ;;
 444         --rerere-autoupdate|--no-rerere-autoupdate)
 445                 allow_rerere_autoupdate="$1" ;;
 446         -q|--quiet)
 447                 GIT_QUIET=t ;;
 448         --keep-cr)
 449                 keepcr=t ;;
 450         --no-keep-cr)
 451                 keepcr=f ;;
 452         --gpg-sign)
 453                 gpg_sign_opt=-S ;;
 454         --gpg-sign=*)
 455                 gpg_sign_opt="-S${1#--gpg-sign=}" ;;
 456         --)
 457                 shift; break ;;
 458         *)
 459                 usage ;;
 460         esac
 461         shift
 462 done
 463
 464 # If the dotest directory exists, but we have finished applying all the
 465 # patches in them, clear it out.
 466 if test -d "$dotest" &&
 467    test -f "$dotest/last" &&
 468    test -f "$dotest/next" &&
 469    last=$(cat "$dotest/last") &&
 470    next=$(cat "$dotest/next") &&
 471    test $# != 0 &&
 472    test "$next" -gt "$last"
 473 then
 474    rm -fr "$dotest"
 475 fi
 476
 477 if test -d "$dotest" && test -f "$dotest/last" && test -f "$dotest/next"
 478 then
 479         case "$#,$skip$resolved$abort" in
 480         0,*t*)
 481                 # Explicit resume command and we do not have file, so
 482                 # we are happy.
 483                 : ;;
 484         0,)
 485                 # No file input but without resume parameters; catch
 486                 # user error to feed us a patch from standard input
 487                 # when there is already $dotest.  This is somewhat
 488                 # unreliable -- stdin could be /dev/null for example
 489                 # and the caller did not intend to feed us a patch but
 490                 # wanted to continue unattended.
 491                 test -t 0
 492                 ;;
 493         *)
 494                 false
 495                 ;;
 496         esac ||
 497         die "$(eval_gettext "previous rebase directory \$dotest still exists but mbox given.")"
 498         resume=yes
 499
 500         case "$skip,$abort" in
 501         t,t)
 502                 die "$(gettext "Please make up your mind. --skip or --abort?")"
 503                 ;;
 504         t,)
 505                 git rerere clear
 506                 git read-tree --reset -u HEAD HEAD
 507                 orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
 508                 git reset HEAD
 509                 git update-ref ORIG_HEAD $orig_head
 510                 ;;
 511         ,t)
 512                 if test -f "$dotest/rebasing"
 513                 then
 514                         exec git rebase --abort
 515                 fi
 516                 git rerere clear
 517                 if safe_to_abort
 518                 then
 519                         git read-tree --reset -u HEAD ORIG_HEAD
 520                         git reset ORIG_HEAD
 521                 fi
 522                 rm -fr "$dotest"
 523                 exit ;;
 524         esac
 525         rm -f "$dotest/dirtyindex"
 526 else
 527         # Possible stray $dotest directory in the independent-run
 528         # case; in the --rebasing case, it is upto the caller
 529         # (git-rebase--am) to take care of stray directories.
 530         if test -d "$dotest" && test -z "$rebasing"
 531         then
 532                 case "$skip,$resolved,$abort" in
 533                 ,,t)
 534                         rm -fr "$dotest"
 535                         exit 0
 536                         ;;
 537                 *)
 538                         die "$(eval_gettext "Stray \$dotest directory found.
 539 Use \"git am --abort\" to remove it.")"
 540                         ;;
 541                 esac
 542         fi
 543
 544         # Make sure we are not given --skip, --continue, or --abort
 545         test "$skip$resolved$abort" = "" ||
 546                 die "$(gettext "Resolve operation not in progress, we are not resuming.")"
 547
 548         # Start afresh.
 549         mkdir -p "$dotest" || exit
 550
 551         if test -n "$prefix" && test $# != 0
 552         then
 553                 first=t
 554                 for arg
 555                 do
 556                         test -n "$first" && {
 557                                 set x
 558                                 first=
 559                         }
 560                         if is_absolute_path "$arg"
 561                         then
 562                                 set "$@" "$arg"
 563                         else
 564                                 set "$@" "$prefix$arg"
 565                         fi
 566                 done
 567                 shift
 568         fi
 569
 570         check_patch_format "$@"
 571
 572         split_patches "$@"
 573
 574         # -i can and must be given when resuming; everything
 575         # else is kept
 576         echo " $git_apply_opt" >"$dotest/apply-opt"
 577         echo "$threeway" >"$dotest/threeway"
 578         echo "$sign" >"$dotest/sign"
 579         echo "$utf8" >"$dotest/utf8"
 580         echo "$keep" >"$dotest/keep"
 581         echo "$messageid" >"$dotest/messageid"
 582         echo "$scissors" >"$dotest/scissors"
 583         echo "$no_inbody_headers" >"$dotest/no_inbody_headers"
 584         echo "$GIT_QUIET" >"$dotest/quiet"
 585         echo 1 >"$dotest/next"
 586         if test -n "$rebasing"
 587         then
 588                 : >"$dotest/rebasing"
 589         else
 590                 : >"$dotest/applying"
 591                 if test -n "$HAS_HEAD"
 592                 then
 593                         git update-ref ORIG_HEAD HEAD
 594                 else
 595                         git update-ref -d ORIG_HEAD >/dev/null 2>&1
 596                 fi
 597         fi
 598 fi
 599
 600 git update-index -q --refresh
 601
 602 case "$resolved" in
 603 '')
 604         case "$HAS_HEAD" in
 605         '')
 606                 files=$(git ls-files) ;;
 607         ?*)
 608                 files=$(git diff-index --cached --name-only HEAD --) ;;
 609         esac || exit
 610         if test "$files"
 611         then
 612                 test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
 613                 die "$(eval_gettext "Dirty index: cannot apply patches (dirty: \$files)")"
 614         fi
 615 esac
 616
 617 # Now, decide what command line options we will give to the git
 618 # commands we invoke, based on the result of parsing command line
 619 # options and previous invocation state stored in $dotest/ files.
 620
 621 if test "$(cat "$dotest/utf8")" = t
 622 then
 623         utf8=-u
 624 else
 625         utf8=-n
 626 fi
 627 keep=$(cat "$dotest/keep")
 628 case "$keep" in
 629 t)
 630         keep=-k ;;
 631 b)
 632         keep=-b ;;
 633 *)
 634         keep= ;;
 635 esac
 636 case "$(cat "$dotest/messageid")" in
 637 t)
 638         messageid=-m ;;
 639 f)
 640         messageid= ;;
 641 esac
 642 case "$(cat "$dotest/scissors")" in
 643 t)
 644         scissors=--scissors ;;
 645 f)
 646         scissors=--no-scissors ;;
 647 esac
 648 if test "$(cat "$dotest/no_inbody_headers")" = t
 649 then
 650         no_inbody_headers=--no-inbody-headers
 651 else
 652         no_inbody_headers=
 653 fi
 654 if test "$(cat "$dotest/quiet")" = t
 655 then
 656         GIT_QUIET=t
 657 fi
 658 if test "$(cat "$dotest/threeway")" = t
 659 then
 660         threeway=t
 661 fi
 662 git_apply_opt=$(cat "$dotest/apply-opt")
 663 if test "$(cat "$dotest/sign")" = t
 664 then
 665         SIGNOFF=$(git var GIT_COMMITTER_IDENT | sed -e '
 666                         s/>.*/>/
 667                         s/^/Signed-off-by: /'
 668                 )
 669 else
 670         SIGNOFF=
 671 fi
 672
 673 last=$(cat "$dotest/last")
 674 this=$(cat "$dotest/next")
 675 if test "$skip" = t
 676 then
 677         this=$(expr "$this" + 1)
 678         resume=
 679 fi
 680
 681 while test "$this" -le "$last"
 682 do
 683         msgnum=$(printf "%0${prec}d" $this)
 684         next=$(expr "$this" + 1)
 685         test -f "$dotest/$msgnum" || {
 686                 resume=
 687                 go_next
 688                 continue
 689         }
 690
 691         # If we are not resuming, parse and extract the patch information
 692         # into separate files:
 693         #  - info records the authorship and title
 694         #  - msg is the rest of commit log message
 695         #  - patch is the patch body.
 696         #
 697         # When we are resuming, these files are either already prepared
 698         # by the user, or the user can tell us to do so by --continue flag.
 699         case "$resume" in
 700         '')
 701                 if test -f "$dotest/rebasing"
 702                 then
 703                         commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
 704                                 -e q "$dotest/$msgnum") &&
 705                         test "$(git cat-file -t "$commit")" = commit ||
 706                                 stop_here $this
 707                         git cat-file commit "$commit" |
 708                         sed -e '1,/^$/d' >"$dotest/msg-clean"
 709                         echo "$commit" >"$dotest/original-commit"
 710                         get_author_ident_from_commit "$commit" >"$dotest/author-script"
 711                         git diff-tree --root --binary --full-index "$commit" >"$dotest/patch"
 712                 else
 713                         git mailinfo $keep $no_inbody_headers $messageid $scissors $utf8 "$dotest/msg" "$dotest/patch" \
 714                                 <"$dotest/$msgnum" >"$dotest/info" ||
 715                                 stop_here $this
 716
 717                         # skip pine's internal folder data
 718                         sane_grep '^Author: Mail System Internal Data$' \
 719                                 <"$dotest"/info >/dev/null &&
 720                                 go_next && continue
 721
 722                         test -s "$dotest/patch" || {
 723                                 eval_gettextln "Patch is empty.  Was it split wrong?
 724 If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
 725 To restore the original branch and stop patching run \"\$cmdline --abort\"."
 726                                 stop_here $this
 727                         }
 728                         rm -f "$dotest/original-commit" "$dotest/author-script"
 729                         {
 730                                 sed -n '/^Subject/ s/Subject: //p' "$dotest/info"
 731                                 echo
 732                                 cat "$dotest/msg"
 733                         } |
 734                         git stripspace > "$dotest/msg-clean"
 735                 fi
 736                 ;;
 737         esac
 738
 739         if test -f "$dotest/author-script"
 740         then
 741                 eval $(cat "$dotest/author-script")
 742         else
 743                 GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
 744                 GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
 745                 GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
 746         fi
 747
 748         if test -z "$GIT_AUTHOR_EMAIL"
 749         then
 750                 gettextln "Patch does not have a valid e-mail address."
 751                 stop_here $this
 752         fi
 753
 754         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 755
 756         case "$resume" in
 757         '')
 758             if test '' != "$SIGNOFF"
 759             then
 760                 LAST_SIGNED_OFF_BY=$(
 761                     sed -ne '/^Signed-off-by: /p' \
 762                     "$dotest/msg-clean" |
 763                     sed -ne '$p'
 764                 )
 765                 ADD_SIGNOFF=$(
 766                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
 767                     test '' = "$LAST_SIGNED_OFF_BY" && echo
 768                     echo "$SIGNOFF"
 769                 })
 770             else
 771                 ADD_SIGNOFF=
 772             fi
 773             {
 774                 if test -s "$dotest/msg-clean"
 775                 then
 776                         cat "$dotest/msg-clean"
 777                 fi
 778                 if test '' != "$ADD_SIGNOFF"
 779                 then
 780                         echo "$ADD_SIGNOFF"
 781                 fi
 782             } >"$dotest/final-commit"
 783             ;;
 784         *)
 785                 case "$resolved$interactive" in
 786                 tt)
 787                         # This is used only for interactive view option.
 788                         git diff-index -p --cached HEAD -- >"$dotest/patch"
 789                         ;;
 790                 esac
 791         esac
 792
 793         resume=
 794         if test "$interactive" = t
 795         then
 796             test -t 0 ||
 797             die "$(gettext "cannot be interactive without stdin connected to a terminal.")"
 798             action=again
 799             while test "$action" = again
 800             do
 801                 gettextln "Commit Body is:"
 802                 echo "--------------------------"
 803                 cat "$dotest/final-commit"
 804                 echo "--------------------------"
 805                 # TRANSLATORS: Make sure to include [y], [n], [e], [v] and [a]
 806                 # in your translation. The program will only accept English
 807                 # input at this point.
 808                 gettext "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
 809                 read reply
 810                 case "$reply" in
 811                 [yY]*) action=yes ;;
 812                 [aA]*) action=yes interactive= ;;
 813                 [nN]*) action=skip ;;
 814                 [eE]*) git_editor "$dotest/final-commit"
 815                        action=again ;;
 816                 [vV]*) action=again
 817                        git_pager "$dotest/patch" ;;
 818                 *)     action=again ;;
 819                 esac
 820             done
 821         else
 822             action=yes
 823         fi
 824
 825         if test $action = skip
 826         then
 827                 go_next
 828                 continue
 829         fi
 830
 831         if test -x "$GIT_DIR"/hooks/applypatch-msg
 832         then
 833                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
 834                 stop_here $this
 835         fi
 836
 837         if test -f "$dotest/final-commit"
 838         then
 839                 FIRSTLINE=$(sed 1q "$dotest/final-commit")
 840         else
 841                 FIRSTLINE=""
 842         fi
 843
 844         say "$(eval_gettext "Applying: \$FIRSTLINE")"
 845
 846         case "$resolved" in
 847         '')
 848                 # When we are allowed to fall back to 3-way later, don't give
 849                 # false errors during the initial attempt.
 850                 squelch=
 851                 if test "$threeway" = t
 852                 then
 853                         squelch='>/dev/null 2>&1 '
 854                 fi
 855                 eval "git apply $squelch$git_apply_opt"' --index "$dotest/patch"'
 856                 apply_status=$?
 857                 ;;
 858         t)
 859                 # Resolved means the user did all the hard work, and
 860                 # we do not have to do any patch application.  Just
 861                 # trust what the user has in the index file and the
 862                 # working tree.
 863                 resolved=
 864                 git diff-index --quiet --cached HEAD -- && {
 865                         gettextln "No changes - did you forget to use 'git add'?
 866 If there is nothing left to stage, chances are that something else
 867 already introduced the same changes; you might want to skip this patch."
 868                         stop_here_user_resolve $this
 869                 }
 870                 unmerged=$(git ls-files -u)
 871                 if test -n "$unmerged"
 872                 then
 873                         gettextln "You still have unmerged paths in your index
 874 did you forget to use 'git add'?"
 875                         stop_here_user_resolve $this
 876                 fi
 877                 apply_status=0
 878                 git rerere
 879                 ;;
 880         esac
 881
 882         if test $apply_status != 0 && test "$threeway" = t
 883         then
 884                 if (fall_back_3way)
 885                 then
 886                     # Applying the patch to an earlier tree and merging the
 887                     # result may have produced the same tree as ours.
 888                     git diff-index --quiet --cached HEAD -- && {
 889                         say "$(gettext "No changes -- Patch already applied.")"
 890                         go_next
 891                         continue
 892                     }
 893                     # clear apply_status -- we have successfully merged.
 894                     apply_status=0
 895                 fi
 896         fi
 897         if test $apply_status != 0
 898         then
 899                 eval_gettextln 'Patch failed at $msgnum $FIRSTLINE'
 900                 if test "$(git config --bool advice.amworkdir)" != false
 901                 then
 902                         eval_gettextln 'The copy of the patch that failed is found in:
 903    $dotest/patch'
 904                 fi
 905                 stop_here_user_resolve $this
 906         fi
 907
 908         if test -x "$GIT_DIR"/hooks/pre-applypatch
 909         then
 910                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
 911         fi
 912
 913         tree=$(git write-tree) &&
 914         commit=$(
 915                 if test -n "$ignore_date"
 916                 then
 917                         GIT_AUTHOR_DATE=
 918                 fi
 919                 parent=$(git rev-parse --verify -q HEAD) ||
 920                 say >&2 "$(gettext "applying to an empty history")"
 921
 922                 if test -n "$committer_date_is_author_date"
 923                 then
 924                         GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
 925                         export GIT_COMMITTER_DATE
 926                 fi &&
 927                 git commit-tree ${parent:+-p} $parent ${gpg_sign_opt:+"$gpg_sign_opt"} $tree  \
 928                         <"$dotest/final-commit"
 929         ) &&
 930         git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
 931         stop_here $this
 932
 933         if test -f "$dotest/original-commit"; then
 934                 echo "$(cat "$dotest/original-commit") $commit" >> "$dotest/rewritten"
 935         fi
 936
 937         if test -x "$GIT_DIR"/hooks/post-applypatch
 938         then
 939                 "$GIT_DIR"/hooks/post-applypatch
 940         fi
 941
 942         go_next
 943 done
 944
 945 if test -s "$dotest"/rewritten; then
 946     git notes copy --for-rewrite=rebase < "$dotest"/rewritten
 947     if test -x "$GIT_DIR"/hooks/post-rewrite; then
 948         "$GIT_DIR"/hooks/post-rewrite rebase < "$dotest"/rewritten
 949     fi
 950 fi
 951
 952 # If am was called with --rebasing (from git-rebase--am), it's up to
 953 # the caller to take care of housekeeping.
 954 if ! test -f "$dotest/rebasing"
 955 then
 956         rm -fr "$dotest"
 957         git gc --auto
 958 fi