Code

commit-tree: teach -m/-F options to read logs from elsewhere
[git.git] / git-am.sh
1 #!/bin/sh
2 #
3 # Copyright (c) 2005, 2006 Junio C Hamano
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 exclude=        pass it through git-apply
26 C=              pass it through git-apply
27 p=              pass it through git-apply
28 patch-format=   format the patch(es) are in
29 reject          pass it through git-apply
30 resolvemsg=     override error message when patch failure occurs
31 continue        continue applying patches after resolving a conflict
32 r,resolved      synonyms for --continue
33 skip            skip the current patch
34 abort           restore the original branch and abort the patching operation.
35 committer-date-is-author-date    lie about committer date
36 ignore-date     use current timestamp for author date
37 rerere-autoupdate update the index with reused conflict resolution if possible
38 rebasing*       (internal use for git-rebase)"
40 . git-sh-setup
41 . git-sh-i18n
42 prefix=$(git rev-parse --show-prefix)
43 set_reflog_action am
44 require_work_tree
45 cd_to_toplevel
47 git var GIT_COMMITTER_IDENT >/dev/null ||
48         die "$(gettext "You need to set your committer info first")"
50 if git rev-parse --verify -q HEAD >/dev/null
51 then
52         HAS_HEAD=yes
53 else
54         HAS_HEAD=
55 fi
57 cmdline="git am"
58 if test '' != "$interactive"
59 then
60         cmdline="$cmdline -i"
61 fi
62 if test '' != "$threeway"
63 then
64         cmdline="$cmdline -3"
65 fi
67 sq () {
68         git rev-parse --sq-quote "$@"
69 }
71 stop_here () {
72     echo "$1" >"$dotest/next"
73     git rev-parse --verify -q HEAD >"$dotest/abort-safety"
74     exit 1
75 }
77 safe_to_abort () {
78         if test -f "$dotest/dirtyindex"
79         then
80                 return 1
81         fi
83         if ! test -s "$dotest/abort-safety"
84         then
85                 return 0
86         fi
88         abort_safety=$(cat "$dotest/abort-safety")
89         if test "z$(git rev-parse --verify -q HEAD)" = "z$abort_safety"
90         then
91                 return 0
92         fi
93                 gettextln "You seem to have moved HEAD since the last 'am' failure.
94 Not rewinding to ORIG_HEAD" >&2
95         return 1
96 }
98 stop_here_user_resolve () {
99     if [ -n "$resolvemsg" ]; then
100             printf '%s\n' "$resolvemsg"
101             stop_here $1
102     fi
103     eval_gettextln "When you have resolved this problem run \"\$cmdline --resolved\".
104 If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
105 To restore the original branch and stop patching run \"\$cmdline --abort\"."
107     stop_here $1
110 go_next () {
111         rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
112                 "$dotest/patch" "$dotest/info"
113         echo "$next" >"$dotest/next"
114         this=$next
117 cannot_fallback () {
118         echo "$1"
119         gettextln "Cannot fall back to three-way merge."
120         exit 1
123 fall_back_3way () {
124     O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
126     rm -fr "$dotest"/patch-merge-*
127     mkdir "$dotest/patch-merge-tmp-dir"
129     # First see if the patch records the index info that we can use.
130     git apply --build-fake-ancestor "$dotest/patch-merge-tmp-index" \
131         "$dotest/patch" &&
132     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
133     git write-tree >"$dotest/patch-merge-base+" ||
134     cannot_fallback "$(gettext "Repository lacks necessary blobs to fall back on 3-way merge.")"
136     say Using index info to reconstruct a base tree...
137     if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
138         git apply --cached <"$dotest/patch"
139     then
140         mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
141         mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
142     else
143         cannot_fallback "$(gettext "Did you hand edit your patch?
144 It does not apply to blobs recorded in its index.")"
145     fi
147     test -f "$dotest/patch-merge-index" &&
148     his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
149     orig_tree=$(cat "$dotest/patch-merge-base") &&
150     rm -fr "$dotest"/patch-merge-* || exit 1
152     say "$(gettext "Falling back to patching base and 3-way merge...")"
154     # This is not so wrong.  Depending on which base we picked,
155     # orig_tree may be wildly different from ours, but his_tree
156     # has the same set of wildly different changes in parts the
157     # patch did not touch, so recursive ends up canceling them,
158     # saying that we reverted all those changes.
160     eval GITHEAD_$his_tree='"$FIRSTLINE"'
161     export GITHEAD_$his_tree
162     if test -n "$GIT_QUIET"
163     then
164             GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
165     fi
166     git-merge-recursive $orig_tree -- HEAD $his_tree || {
167             git rerere $allow_rerere_autoupdate
168             echo Failed to merge in the changes.
169             exit 1
170     }
171     unset GITHEAD_$his_tree
174 clean_abort () {
175         test $# = 0 || echo >&2 "$@"
176         rm -fr "$dotest"
177         exit 1
180 patch_format=
182 check_patch_format () {
183         # early return if patch_format was set from the command line
184         if test -n "$patch_format"
185         then
186                 return 0
187         fi
189         # we default to mbox format if input is from stdin and for
190         # directories
191         if test $# = 0 || test "x$1" = "x-" || test -d "$1"
192         then
193                 patch_format=mbox
194                 return 0
195         fi
197         # otherwise, check the first few non-blank lines of the first
198         # patch to try to detect its format
199         {
200                 # Start from first line containing non-whitespace
201                 l1=
202                 while test -z "$l1"
203                 do
204                         read l1
205                 done
206                 read l2
207                 read l3
208                 case "$l1" in
209                 "From "* | "From: "*)
210                         patch_format=mbox
211                         ;;
212                 '# This series applies on GIT commit'*)
213                         patch_format=stgit-series
214                         ;;
215                 "# HG changeset patch")
216                         patch_format=hg
217                         ;;
218                 *)
219                         # if the second line is empty and the third is
220                         # a From, Author or Date entry, this is very
221                         # likely an StGIT patch
222                         case "$l2,$l3" in
223                         ,"From: "* | ,"Author: "* | ,"Date: "*)
224                                 patch_format=stgit
225                                 ;;
226                         *)
227                                 ;;
228                         esac
229                         ;;
230                 esac
231                 if test -z "$patch_format" &&
232                         test -n "$l1" &&
233                         test -n "$l2" &&
234                         test -n "$l3"
235                 then
236                         # This begins with three non-empty lines.  Is this a
237                         # piece of e-mail a-la RFC2822?  Grab all the headers,
238                         # discarding the indented remainder of folded lines,
239                         # and see if it looks like that they all begin with the
240                         # header field names...
241                         tr -d '\015' <"$1" |
242                         sed -n -e '/^$/q' -e '/^[       ]/d' -e p |
243                         sane_egrep -v '^[!-9;-~]+:' >/dev/null ||
244                         patch_format=mbox
245                 fi
246         } < "$1" || clean_abort
249 split_patches () {
250         case "$patch_format" in
251         mbox)
252                 if test -n "$rebasing" || test t = "$keepcr"
253                 then
254                     keep_cr=--keep-cr
255                 else
256                     keep_cr=
257                 fi
258                 git mailsplit -d"$prec" -o"$dotest" -b $keep_cr -- "$@" > "$dotest/last" ||
259                 clean_abort
260                 ;;
261         stgit-series)
262                 if test $# -ne 1
263                 then
264                         clean_abort "$(gettext "Only one StGIT patch series can be applied at once")"
265                 fi
266                 series_dir=`dirname "$1"`
267                 series_file="$1"
268                 shift
269                 {
270                         set x
271                         while read filename
272                         do
273                                 set "$@" "$series_dir/$filename"
274                         done
275                         # remove the safety x
276                         shift
277                         # remove the arg coming from the first-line comment
278                         shift
279                 } < "$series_file" || clean_abort
280                 # set the patch format appropriately
281                 patch_format=stgit
282                 # now handle the actual StGIT patches
283                 split_patches "$@"
284                 ;;
285         stgit)
286                 this=0
287                 for stgit in "$@"
288                 do
289                         this=`expr "$this" + 1`
290                         msgnum=`printf "%0${prec}d" $this`
291                         # Perl version of StGIT parse_patch. The first nonemptyline
292                         # not starting with Author, From or Date is the
293                         # subject, and the body starts with the next nonempty
294                         # line not starting with Author, From or Date
295                         perl -ne 'BEGIN { $subject = 0 }
296                                 if ($subject > 1) { print ; }
297                                 elsif (/^\s+$/) { next ; }
298                                 elsif (/^Author:/) { s/Author/From/ ; print ;}
299                                 elsif (/^(From|Date)/) { print ; }
300                                 elsif ($subject) {
301                                         $subject = 2 ;
302                                         print "\n" ;
303                                         print ;
304                                 } else {
305                                         print "Subject: ", $_ ;
306                                         $subject = 1;
307                                 }
308                         ' < "$stgit" > "$dotest/$msgnum" || clean_abort
309                 done
310                 echo "$this" > "$dotest/last"
311                 this=
312                 msgnum=
313                 ;;
314         hg)
315                 this=0
316                 for hg in "$@"
317                 do
318                         this=$(( $this + 1 ))
319                         msgnum=$(printf "%0${prec}d" $this)
320                         # hg stores changeset metadata in #-commented lines preceding
321                         # the commit message and diff(s). The only metadata we care about
322                         # are the User and Date (Node ID and Parent are hashes which are
323                         # only relevant to the hg repository and thus not useful to us)
324                         # Since we cannot guarantee that the commit message is in
325                         # git-friendly format, we put no Subject: line and just consume
326                         # all of the message as the body
327                         perl -M'POSIX qw(strftime)' -ne 'BEGIN { $subject = 0 }
328                                 if ($subject) { print ; }
329                                 elsif (/^\# User /) { s/\# User/From:/ ; print ; }
330                                 elsif (/^\# Date /) {
331                                         my ($hashsign, $str, $time, $tz) = split ;
332                                         $tz = sprintf "%+05d", (0-$tz)/36;
333                                         print "Date: " .
334                                               strftime("%a, %d %b %Y %H:%M:%S ",
335                                                        localtime($time))
336                                               . "$tz\n";
337                                 } elsif (/^\# /) { next ; }
338                                 else {
339                                         print "\n", $_ ;
340                                         $subject = 1;
341                                 }
342                         ' <"$hg" >"$dotest/$msgnum" || clean_abort
343                 done
344                 echo "$this" >"$dotest/last"
345                 this=
346                 msgnum=
347                 ;;
348         *)
349                 if test -n "$patch_format"
350                 then
351                         clean_abort "$(eval_gettext "Patch format \$patch_format is not supported.")"
352                 else
353                         clean_abort "$(gettext "Patch format detection failed.")"
354                 fi
355                 ;;
356         esac
359 prec=4
360 dotest="$GIT_DIR/rebase-apply"
361 sign= utf8=t keep= keepcr= skip= interactive= resolved= rebasing= abort=
362 resolvemsg= resume= scissors= no_inbody_headers=
363 git_apply_opt=
364 committer_date_is_author_date=
365 ignore_date=
366 allow_rerere_autoupdate=
368 if test "$(git config --bool --get am.keepcr)" = true
369 then
370     keepcr=t
371 fi
373 while test $# != 0
374 do
375         case "$1" in
376         -i|--interactive)
377                 interactive=t ;;
378         -b|--binary)
379                 : ;;
380         -3|--3way)
381                 threeway=t ;;
382         -s|--signoff)
383                 sign=t ;;
384         -u|--utf8)
385                 utf8=t ;; # this is now default
386         --no-utf8)
387                 utf8= ;;
388         -k|--keep)
389                 keep=t ;;
390         -c|--scissors)
391                 scissors=t ;;
392         --no-scissors)
393                 scissors=f ;;
394         -r|--resolved|--continue)
395                 resolved=t ;;
396         --skip)
397                 skip=t ;;
398         --abort)
399                 abort=t ;;
400         --rebasing)
401                 rebasing=t threeway=t keep=t scissors=f no_inbody_headers=t ;;
402         -d|--dotest)
403                 die "$(gettext "-d option is no longer supported.  Do not use.")"
404                 ;;
405         --resolvemsg)
406                 shift; resolvemsg=$1 ;;
407         --whitespace|--directory|--exclude)
408                 git_apply_opt="$git_apply_opt $(sq "$1=$2")"; shift ;;
409         -C|-p)
410                 git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
411         --patch-format)
412                 shift ; patch_format="$1" ;;
413         --reject|--ignore-whitespace|--ignore-space-change)
414                 git_apply_opt="$git_apply_opt $1" ;;
415         --committer-date-is-author-date)
416                 committer_date_is_author_date=t ;;
417         --ignore-date)
418                 ignore_date=t ;;
419         --rerere-autoupdate|--no-rerere-autoupdate)
420                 allow_rerere_autoupdate="$1" ;;
421         -q|--quiet)
422                 GIT_QUIET=t ;;
423         --keep-cr)
424                 keepcr=t ;;
425         --no-keep-cr)
426                 keepcr=f ;;
427         --)
428                 shift; break ;;
429         *)
430                 usage ;;
431         esac
432         shift
433 done
435 # If the dotest directory exists, but we have finished applying all the
436 # patches in them, clear it out.
437 if test -d "$dotest" &&
438    last=$(cat "$dotest/last") &&
439    next=$(cat "$dotest/next") &&
440    test $# != 0 &&
441    test "$next" -gt "$last"
442 then
443    rm -fr "$dotest"
444 fi
446 if test -d "$dotest"
447 then
448         case "$#,$skip$resolved$abort" in
449         0,*t*)
450                 # Explicit resume command and we do not have file, so
451                 # we are happy.
452                 : ;;
453         0,)
454                 # No file input but without resume parameters; catch
455                 # user error to feed us a patch from standard input
456                 # when there is already $dotest.  This is somewhat
457                 # unreliable -- stdin could be /dev/null for example
458                 # and the caller did not intend to feed us a patch but
459                 # wanted to continue unattended.
460                 test -t 0
461                 ;;
462         *)
463                 false
464                 ;;
465         esac ||
466         die "$(eval_gettext "previous rebase directory \$dotest still exists but mbox given.")"
467         resume=yes
469         case "$skip,$abort" in
470         t,t)
471                 die "$(gettext "Please make up your mind. --skip or --abort?")"
472                 ;;
473         t,)
474                 git rerere clear
475                 git read-tree --reset -u HEAD HEAD
476                 orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
477                 git reset HEAD
478                 git update-ref ORIG_HEAD $orig_head
479                 ;;
480         ,t)
481                 if test -f "$dotest/rebasing"
482                 then
483                         exec git rebase --abort
484                 fi
485                 git rerere clear
486                 if safe_to_abort
487                 then
488                         git read-tree --reset -u HEAD ORIG_HEAD
489                         git reset ORIG_HEAD
490                 fi
491                 rm -fr "$dotest"
492                 exit ;;
493         esac
494         rm -f "$dotest/dirtyindex"
495 else
496         # Make sure we are not given --skip, --resolved, nor --abort
497         test "$skip$resolved$abort" = "" ||
498                 die "$(gettext "Resolve operation not in progress, we are not resuming.")"
500         # Start afresh.
501         mkdir -p "$dotest" || exit
503         if test -n "$prefix" && test $# != 0
504         then
505                 first=t
506                 for arg
507                 do
508                         test -n "$first" && {
509                                 set x
510                                 first=
511                         }
512                         if is_absolute_path "$arg"
513                         then
514                                 set "$@" "$arg"
515                         else
516                                 set "$@" "$prefix$arg"
517                         fi
518                 done
519                 shift
520         fi
522         check_patch_format "$@"
524         split_patches "$@"
526         # -i can and must be given when resuming; everything
527         # else is kept
528         echo " $git_apply_opt" >"$dotest/apply-opt"
529         echo "$threeway" >"$dotest/threeway"
530         echo "$sign" >"$dotest/sign"
531         echo "$utf8" >"$dotest/utf8"
532         echo "$keep" >"$dotest/keep"
533         echo "$keepcr" >"$dotest/keepcr"
534         echo "$scissors" >"$dotest/scissors"
535         echo "$no_inbody_headers" >"$dotest/no_inbody_headers"
536         echo "$GIT_QUIET" >"$dotest/quiet"
537         echo 1 >"$dotest/next"
538         if test -n "$rebasing"
539         then
540                 : >"$dotest/rebasing"
541         else
542                 : >"$dotest/applying"
543                 if test -n "$HAS_HEAD"
544                 then
545                         git update-ref ORIG_HEAD HEAD
546                 else
547                         git update-ref -d ORIG_HEAD >/dev/null 2>&1
548                 fi
549         fi
550 fi
552 git update-index -q --refresh
554 case "$resolved" in
555 '')
556         case "$HAS_HEAD" in
557         '')
558                 files=$(git ls-files) ;;
559         ?*)
560                 files=$(git diff-index --cached --name-only HEAD --) ;;
561         esac || exit
562         if test "$files"
563         then
564                 test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
565                 die "$(eval_gettext "Dirty index: cannot apply patches (dirty: \$files)")"
566         fi
567 esac
569 if test "$(cat "$dotest/utf8")" = t
570 then
571         utf8=-u
572 else
573         utf8=-n
574 fi
575 if test "$(cat "$dotest/keep")" = t
576 then
577         keep=-k
578 fi
579 case "$(cat "$dotest/keepcr")" in
580 t)
581         keepcr=--keep-cr ;;
582 f)
583         keepcr=--no-keep-cr ;;
584 esac
585 case "$(cat "$dotest/scissors")" in
586 t)
587         scissors=--scissors ;;
588 f)
589         scissors=--no-scissors ;;
590 esac
591 if test "$(cat "$dotest/no_inbody_headers")" = t
592 then
593         no_inbody_headers=--no-inbody-headers
594 else
595         no_inbody_headers=
596 fi
597 if test "$(cat "$dotest/quiet")" = t
598 then
599         GIT_QUIET=t
600 fi
601 if test "$(cat "$dotest/threeway")" = t
602 then
603         threeway=t
604 fi
605 git_apply_opt=$(cat "$dotest/apply-opt")
606 if test "$(cat "$dotest/sign")" = t
607 then
608         SIGNOFF=`git var GIT_COMMITTER_IDENT | sed -e '
609                         s/>.*/>/
610                         s/^/Signed-off-by: /'
611                 `
612 else
613         SIGNOFF=
614 fi
616 last=`cat "$dotest/last"`
617 this=`cat "$dotest/next"`
618 if test "$skip" = t
619 then
620         this=`expr "$this" + 1`
621         resume=
622 fi
624 while test "$this" -le "$last"
625 do
626         msgnum=`printf "%0${prec}d" $this`
627         next=`expr "$this" + 1`
628         test -f "$dotest/$msgnum" || {
629                 resume=
630                 go_next
631                 continue
632         }
634         # If we are not resuming, parse and extract the patch information
635         # into separate files:
636         #  - info records the authorship and title
637         #  - msg is the rest of commit log message
638         #  - patch is the patch body.
639         #
640         # When we are resuming, these files are either already prepared
641         # by the user, or the user can tell us to do so by --resolved flag.
642         case "$resume" in
643         '')
644                 git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
645                         <"$dotest/$msgnum" >"$dotest/info" ||
646                         stop_here $this
648                 # skip pine's internal folder data
649                 sane_grep '^Author: Mail System Internal Data$' \
650                         <"$dotest"/info >/dev/null &&
651                         go_next && continue
653                 test -s "$dotest/patch" || {
654                         eval_gettextln "Patch is empty.  Was it split wrong?
655 If you would prefer to skip this patch, instead run \"\$cmdline --skip\".
656 To restore the original branch and stop patching run \"\$cmdline --abort\"."
657                         stop_here $this
658                 }
659                 rm -f "$dotest/original-commit" "$dotest/author-script"
660                 if test -f "$dotest/rebasing" &&
661                         commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
662                                 -e q "$dotest/$msgnum") &&
663                         test "$(git cat-file -t "$commit")" = commit
664                 then
665                         git cat-file commit "$commit" |
666                         sed -e '1,/^$/d' >"$dotest/msg-clean"
667                         echo "$commit" > "$dotest/original-commit"
668                         get_author_ident_from_commit "$commit" > "$dotest/author-script"
669                 else
670                         {
671                                 sed -n '/^Subject/ s/Subject: //p' "$dotest/info"
672                                 echo
673                                 cat "$dotest/msg"
674                         } |
675                         git stripspace > "$dotest/msg-clean"
676                 fi
677                 ;;
678         esac
680         if test -f "$dotest/author-script"
681         then
682                 eval $(cat "$dotest/author-script")
683         else
684                 GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
685                 GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
686                 GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
687         fi
689         if test -z "$GIT_AUTHOR_EMAIL"
690         then
691                 gettextln "Patch does not have a valid e-mail address."
692                 stop_here $this
693         fi
695         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
697         case "$resume" in
698         '')
699             if test '' != "$SIGNOFF"
700             then
701                 LAST_SIGNED_OFF_BY=`
702                     sed -ne '/^Signed-off-by: /p' \
703                     "$dotest/msg-clean" |
704                     sed -ne '$p'
705                 `
706                 ADD_SIGNOFF=`
707                     test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
708                     test '' = "$LAST_SIGNED_OFF_BY" && echo
709                     echo "$SIGNOFF"
710                 }`
711             else
712                 ADD_SIGNOFF=
713             fi
714             {
715                 if test -s "$dotest/msg-clean"
716                 then
717                         cat "$dotest/msg-clean"
718                 fi
719                 if test '' != "$ADD_SIGNOFF"
720                 then
721                         echo "$ADD_SIGNOFF"
722                 fi
723             } >"$dotest/final-commit"
724             ;;
725         *)
726                 case "$resolved$interactive" in
727                 tt)
728                         # This is used only for interactive view option.
729                         git diff-index -p --cached HEAD -- >"$dotest/patch"
730                         ;;
731                 esac
732         esac
734         resume=
735         if test "$interactive" = t
736         then
737             test -t 0 ||
738             die "$(gettext "cannot be interactive without stdin connected to a terminal.")"
739             action=again
740             while test "$action" = again
741             do
742                 gettextln "Commit Body is:"
743                 echo "--------------------------"
744                 cat "$dotest/final-commit"
745                 echo "--------------------------"
746                 # TRANSLATORS: Make sure to include [y], [n], [e], [v] and [a]
747                 # in your translation. The program will only accept English
748                 # input at this point.
749                 gettext "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
750                 read reply
751                 case "$reply" in
752                 [yY]*) action=yes ;;
753                 [aA]*) action=yes interactive= ;;
754                 [nN]*) action=skip ;;
755                 [eE]*) git_editor "$dotest/final-commit"
756                        action=again ;;
757                 [vV]*) action=again
758                        git_pager "$dotest/patch" ;;
759                 *)     action=again ;;
760                 esac
761             done
762         else
763             action=yes
764         fi
766         if test -f "$dotest/final-commit"
767         then
768                 FIRSTLINE=$(sed 1q "$dotest/final-commit")
769         else
770                 FIRSTLINE=""
771         fi
773         if test $action = skip
774         then
775                 go_next
776                 continue
777         fi
779         if test -x "$GIT_DIR"/hooks/applypatch-msg
780         then
781                 "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
782                 stop_here $this
783         fi
785         say "$(eval_gettext "Applying: \$FIRSTLINE")"
787         case "$resolved" in
788         '')
789                 # When we are allowed to fall back to 3-way later, don't give
790                 # false errors during the initial attempt.
791                 squelch=
792                 if test "$threeway" = t
793                 then
794                         squelch='>/dev/null 2>&1 '
795                 fi
796                 eval "git apply $squelch$git_apply_opt"' --index "$dotest/patch"'
797                 apply_status=$?
798                 ;;
799         t)
800                 # Resolved means the user did all the hard work, and
801                 # we do not have to do any patch application.  Just
802                 # trust what the user has in the index file and the
803                 # working tree.
804                 resolved=
805                 git diff-index --quiet --cached HEAD -- && {
806                         gettextln "No changes - did you forget to use 'git add'?
807 If there is nothing left to stage, chances are that something else
808 already introduced the same changes; you might want to skip this patch."
809                         stop_here_user_resolve $this
810                 }
811                 unmerged=$(git ls-files -u)
812                 if test -n "$unmerged"
813                 then
814                         gettextln "You still have unmerged paths in your index
815 did you forget to use 'git add'?"
816                         stop_here_user_resolve $this
817                 fi
818                 apply_status=0
819                 git rerere
820                 ;;
821         esac
823         if test $apply_status != 0 && test "$threeway" = t
824         then
825                 if (fall_back_3way)
826                 then
827                     # Applying the patch to an earlier tree and merging the
828                     # result may have produced the same tree as ours.
829                     git diff-index --quiet --cached HEAD -- && {
830                         say "$(gettext "No changes -- Patch already applied.")"
831                         go_next
832                         continue
833                     }
834                     # clear apply_status -- we have successfully merged.
835                     apply_status=0
836                 fi
837         fi
838         if test $apply_status != 0
839         then
840                 eval_gettextln 'Patch failed at $msgnum $FIRSTLINE'
841                 stop_here_user_resolve $this
842         fi
844         if test -x "$GIT_DIR"/hooks/pre-applypatch
845         then
846                 "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
847         fi
849         tree=$(git write-tree) &&
850         commit=$(
851                 if test -n "$ignore_date"
852                 then
853                         GIT_AUTHOR_DATE=
854                 fi
855                 parent=$(git rev-parse --verify -q HEAD) ||
856                 say >&2 "$(gettext "applying to an empty history")"
858                 if test -n "$committer_date_is_author_date"
859                 then
860                         GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
861                         export GIT_COMMITTER_DATE
862                 fi &&
863                 git commit-tree $tree ${parent:+-p} $parent <"$dotest/final-commit"
864         ) &&
865         git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
866         stop_here $this
868         if test -f "$dotest/original-commit"; then
869                 echo "$(cat "$dotest/original-commit") $commit" >> "$dotest/rewritten"
870         fi
872         if test -x "$GIT_DIR"/hooks/post-applypatch
873         then
874                 "$GIT_DIR"/hooks/post-applypatch
875         fi
877         go_next
878 done
880 if test -s "$dotest"/rewritten; then
881     git notes copy --for-rewrite=rebase < "$dotest"/rewritten
882     if test -x "$GIT_DIR"/hooks/post-rewrite; then
883         "$GIT_DIR"/hooks/post-rewrite rebase < "$dotest"/rewritten
884     fi
885 fi
887 rm -fr "$dotest"
888 git gc --auto