strbuf: remove unnecessary NUL assignment in xstrdup_tolower()
[alt-git.git] / git-rebase--interactive.sh
blobe3f5a0abf3c76c6e6b1e4528a20fca4c8784894b
1 # This shell script fragment is sourced by git-rebase to implement
2 # its interactive mode. "git rebase --interactive" makes it easy
3 # to fix up commits in the middle of a series and rearrange commits.
5 # Copyright (c) 2006 Johannes E. Schindelin
7 # The original idea comes from Eric W. Biederman, in
8 # https://public-inbox.org/git/m1odwkyuf5.fsf_-_@ebiederm.dsl.xmission.com/
10 # The file containing rebase commands, comments, and empty lines.
11 # This file is created by "git rebase -i" then edited by the user. As
12 # the lines are processed, they are removed from the front of this
13 # file and written to the tail of $done.
14 todo="$state_dir"/git-rebase-todo
16 # The rebase command lines that have already been processed. A line
17 # is moved here when it is first handled, before any associated user
18 # actions.
19 done="$state_dir"/done
21 # The commit message that is planned to be used for any changes that
22 # need to be committed following a user interaction.
23 msg="$state_dir"/message
25 # The file into which is accumulated the suggested commit message for
26 # squash/fixup commands. When the first of a series of squash/fixups
27 # is seen, the file is created and the commit message from the
28 # previous commit and from the first squash/fixup commit are written
29 # to it. The commit message for each subsequent squash/fixup commit
30 # is appended to the file as it is processed.
32 # The first line of the file is of the form
33 # # This is a combination of $count commits.
34 # where $count is the number of commits whose messages have been
35 # written to the file so far (including the initial "pick" commit).
36 # Each time that a commit message is processed, this line is read and
37 # updated. It is deleted just before the combined commit is made.
38 squash_msg="$state_dir"/message-squash
40 # If the current series of squash/fixups has not yet included a squash
41 # command, then this file exists and holds the commit message of the
42 # original "pick" commit. (If the series ends without a "squash"
43 # command, then this can be used as the commit message of the combined
44 # commit without opening the editor.)
45 fixup_msg="$state_dir"/message-fixup
47 # $rewritten is the name of a directory containing files for each
48 # commit that is reachable by at least one merge base of $head and
49 # $upstream. They are not necessarily rewritten, but their children
50 # might be. This ensures that commits on merged, but otherwise
51 # unrelated side branches are left alone. (Think "X" in the man page's
52 # example.)
53 rewritten="$state_dir"/rewritten
55 dropped="$state_dir"/dropped
57 end="$state_dir"/end
58 msgnum="$state_dir"/msgnum
60 # A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
61 # GIT_AUTHOR_DATE that will be used for the commit that is currently
62 # being rebased.
63 author_script="$state_dir"/author-script
65 # When an "edit" rebase command is being processed, the SHA1 of the
66 # commit to be edited is recorded in this file. When "git rebase
67 # --continue" is executed, if there are any staged changes then they
68 # will be amended to the HEAD commit, but only provided the HEAD
69 # commit is still the commit to be edited. When any other rebase
70 # command is processed, this file is deleted.
71 amend="$state_dir"/amend
73 # For the post-rewrite hook, we make a list of rewritten commits and
74 # their new sha1s. The rewritten-pending list keeps the sha1s of
75 # commits that have been processed, but not committed yet,
76 # e.g. because they are waiting for a 'squash' command.
77 rewritten_list="$state_dir"/rewritten-list
78 rewritten_pending="$state_dir"/rewritten-pending
80 # Work around Git for Windows' Bash whose "read" does not strip CRLF
81 # and leaves CR at the end instead.
82 cr=$(printf "\015")
84 strategy_args=${strategy:+--strategy=$strategy}
85 test -n "$strategy_opts" &&
86 eval '
87 for strategy_opt in '"$strategy_opts"'
89 strategy_args="$strategy_args -X$(git rev-parse --sq-quote "${strategy_opt#--}")"
90 done
93 GIT_CHERRY_PICK_HELP="$resolvemsg"
94 export GIT_CHERRY_PICK_HELP
96 comment_char=$(git config --get core.commentchar 2>/dev/null)
97 case "$comment_char" in
98 '' | auto)
99 comment_char="#"
104 comment_char=$(echo "$comment_char" | cut -c1)
106 esac
108 warn () {
109 printf '%s\n' "$*" >&2
112 # Output the commit message for the specified commit.
113 commit_message () {
114 git cat-file commit "$1" | sed "1,/^$/d"
117 orig_reflog_action="$GIT_REFLOG_ACTION"
119 comment_for_reflog () {
120 case "$orig_reflog_action" in
121 ''|rebase*)
122 GIT_REFLOG_ACTION="rebase -i ($1)"
123 export GIT_REFLOG_ACTION
125 esac
128 last_count=
129 mark_action_done () {
130 sed -e 1q < "$todo" >> "$done"
131 sed -e 1d < "$todo" >> "$todo".new
132 mv -f "$todo".new "$todo"
133 new_count=$(( $(git stripspace --strip-comments <"$done" | wc -l) ))
134 echo $new_count >"$msgnum"
135 total=$(($new_count + $(git stripspace --strip-comments <"$todo" | wc -l)))
136 echo $total >"$end"
137 if test "$last_count" != "$new_count"
138 then
139 last_count=$new_count
140 eval_gettext "Rebasing (\$new_count/\$total)"; printf "\r"
141 test -z "$verbose" || echo
145 # Put the last action marked done at the beginning of the todo list
146 # again. If there has not been an action marked done yet, leave the list of
147 # items on the todo list unchanged.
148 reschedule_last_action () {
149 tail -n 1 "$done" | cat - "$todo" >"$todo".new
150 sed -e \$d <"$done" >"$done".new
151 mv -f "$todo".new "$todo"
152 mv -f "$done".new "$done"
155 append_todo_help () {
156 gettext "
157 Commands:
158 p, pick = use commit
159 r, reword = use commit, but edit the commit message
160 e, edit = use commit, but stop for amending
161 s, squash = use commit, but meld into previous commit
162 f, fixup = like \"squash\", but discard this commit's log message
163 x, exec = run command (the rest of the line) using shell
164 d, drop = remove commit
166 These lines can be re-ordered; they are executed from top to bottom.
167 " | git stripspace --comment-lines >>"$todo"
169 if test $(get_missing_commit_check_level) = error
170 then
171 gettext "
172 Do not remove any line. Use 'drop' explicitly to remove a commit.
173 " | git stripspace --comment-lines >>"$todo"
174 else
175 gettext "
176 If you remove a line here THAT COMMIT WILL BE LOST.
177 " | git stripspace --comment-lines >>"$todo"
181 make_patch () {
182 sha1_and_parents="$(git rev-list --parents -1 "$1")"
183 case "$sha1_and_parents" in
184 ?*' '?*' '?*)
185 git diff --cc $sha1_and_parents
187 ?*' '?*)
188 git diff-tree -p "$1^!"
191 echo "Root commit"
193 esac > "$state_dir"/patch
194 test -f "$msg" ||
195 commit_message "$1" > "$msg"
196 test -f "$author_script" ||
197 get_author_ident_from_commit "$1" > "$author_script"
200 die_with_patch () {
201 echo "$1" > "$state_dir"/stopped-sha
202 make_patch "$1"
203 die "$2"
206 exit_with_patch () {
207 echo "$1" > "$state_dir"/stopped-sha
208 make_patch $1
209 git rev-parse --verify HEAD > "$amend"
210 gpg_sign_opt_quoted=${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")}
211 warn "$(eval_gettext "\
212 You can amend the commit now, with
214 git commit --amend \$gpg_sign_opt_quoted
216 Once you are satisfied with your changes, run
218 git rebase --continue")"
219 warn
220 exit $2
223 die_abort () {
224 apply_autostash
225 rm -rf "$state_dir"
226 die "$1"
229 has_action () {
230 test -n "$(git stripspace --strip-comments <"$1")"
233 is_empty_commit() {
234 tree=$(git rev-parse -q --verify "$1"^{tree} 2>/dev/null) || {
235 sha1=$1
236 die "$(eval_gettext "\$sha1: not a commit that can be picked")"
238 ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null) ||
239 ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
240 test "$tree" = "$ptree"
243 is_merge_commit()
245 git rev-parse --verify --quiet "$1"^2 >/dev/null 2>&1
248 # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
249 # GIT_AUTHOR_DATE exported from the current environment.
250 do_with_author () {
252 export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
253 "$@"
257 git_sequence_editor () {
258 if test -z "$GIT_SEQUENCE_EDITOR"
259 then
260 GIT_SEQUENCE_EDITOR="$(git config sequence.editor)"
261 if [ -z "$GIT_SEQUENCE_EDITOR" ]
262 then
263 GIT_SEQUENCE_EDITOR="$(git var GIT_EDITOR)" || return $?
267 eval "$GIT_SEQUENCE_EDITOR" '"$@"'
270 pick_one () {
271 ff=--ff
273 case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac
274 case "$force_rebase" in '') ;; ?*) ff= ;; esac
275 output git rev-parse --verify $sha1 || die "$(eval_gettext "Invalid commit name: \$sha1")"
277 if is_empty_commit "$sha1"
278 then
279 empty_args="--allow-empty"
282 test -d "$rewritten" &&
283 pick_one_preserving_merges "$@" && return
284 output eval git cherry-pick $allow_rerere_autoupdate \
285 ${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
286 "$strategy_args" $empty_args $ff "$@"
288 # If cherry-pick dies it leaves the to-be-picked commit unrecorded. Reschedule
289 # previous task so this commit is not lost.
290 ret=$?
291 case "$ret" in [01]) ;; *) reschedule_last_action ;; esac
292 return $ret
295 pick_one_preserving_merges () {
296 fast_forward=t
297 case "$1" in
299 fast_forward=f
300 sha1=$2
303 sha1=$1
305 esac
306 sha1=$(git rev-parse $sha1)
308 if test -f "$state_dir"/current-commit
309 then
310 if test "$fast_forward" = t
311 then
312 while read current_commit
314 git rev-parse HEAD > "$rewritten"/$current_commit
315 done <"$state_dir"/current-commit
316 rm "$state_dir"/current-commit ||
317 die "$(gettext "Cannot write current commit's replacement sha1")"
321 echo $sha1 >> "$state_dir"/current-commit
323 # rewrite parents; if none were rewritten, we can fast-forward.
324 new_parents=
325 pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)"
326 if test "$pend" = " "
327 then
328 pend=" root"
330 while [ "$pend" != "" ]
332 p=$(expr "$pend" : ' \([^ ]*\)')
333 pend="${pend# $p}"
335 if test -f "$rewritten"/$p
336 then
337 new_p=$(cat "$rewritten"/$p)
339 # If the todo reordered commits, and our parent is marked for
340 # rewriting, but hasn't been gotten to yet, assume the user meant to
341 # drop it on top of the current HEAD
342 if test -z "$new_p"
343 then
344 new_p=$(git rev-parse HEAD)
347 test $p != $new_p && fast_forward=f
348 case "$new_parents" in
349 *$new_p*)
350 ;; # do nothing; that parent is already there
352 new_parents="$new_parents $new_p"
354 esac
355 else
356 if test -f "$dropped"/$p
357 then
358 fast_forward=f
359 replacement="$(cat "$dropped"/$p)"
360 test -z "$replacement" && replacement=root
361 pend=" $replacement$pend"
362 else
363 new_parents="$new_parents $p"
366 done
367 case $fast_forward in
369 output warn "$(eval_gettext "Fast-forward to \$sha1")"
370 output git reset --hard $sha1 ||
371 die "$(eval_gettext "Cannot fast-forward to \$sha1")"
374 first_parent=$(expr "$new_parents" : ' \([^ ]*\)')
376 if [ "$1" != "-n" ]
377 then
378 # detach HEAD to current parent
379 output git checkout $first_parent 2> /dev/null ||
380 die "$(eval_gettext "Cannot move HEAD to \$first_parent")"
383 case "$new_parents" in
384 ' '*' '*)
385 test "a$1" = a-n && die "$(eval_gettext "Refusing to squash a merge: \$sha1")"
387 # redo merge
388 author_script_content=$(get_author_ident_from_commit $sha1)
389 eval "$author_script_content"
390 msg_content="$(commit_message $sha1)"
391 # No point in merging the first parent, that's HEAD
392 new_parents=${new_parents# $first_parent}
393 merge_args="--no-log --no-ff"
394 if ! do_with_author output eval \
395 'git merge ${gpg_sign_opt:+"$gpg_sign_opt"} \
396 $allow_rerere_autoupdate $merge_args \
397 $strategy_args -m "$msg_content" $new_parents'
398 then
399 printf "%s\n" "$msg_content" > "$GIT_DIR"/MERGE_MSG
400 die_with_patch $sha1 "$(eval_gettext "Error redoing merge \$sha1")"
402 echo "$sha1 $(git rev-parse HEAD^0)" >> "$rewritten_list"
405 output eval git cherry-pick $allow_rerere_autoupdate \
406 ${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
407 "$strategy_args" "$@" ||
408 die_with_patch $sha1 "$(eval_gettext "Could not pick \$sha1")"
410 esac
412 esac
415 this_nth_commit_message () {
416 n=$1
417 eval_gettext "This is the commit message #\${n}:"
420 skip_nth_commit_message () {
421 n=$1
422 eval_gettext "The commit message #\${n} will be skipped:"
425 update_squash_messages () {
426 if test -f "$squash_msg"; then
427 mv "$squash_msg" "$squash_msg".bak || exit
428 count=$(($(sed -n \
429 -e "1s/^$comment_char[^0-9]*\([0-9][0-9]*\).*/\1/p" \
430 -e "q" < "$squash_msg".bak)+1))
432 printf '%s\n' "$comment_char $(eval_ngettext \
433 "This is a combination of \$count commit." \
434 "This is a combination of \$count commits." \
435 $count)"
436 sed -e 1d -e '2,/^./{
437 /^$/d
438 }' <"$squash_msg".bak
439 } >"$squash_msg"
440 else
441 commit_message HEAD >"$fixup_msg" ||
442 die "$(eval_gettext "Cannot write \$fixup_msg")"
443 count=2
445 printf '%s\n' "$comment_char $(gettext "This is a combination of 2 commits.")"
446 printf '%s\n' "$comment_char $(gettext "This is the 1st commit message:")"
447 echo
448 cat "$fixup_msg"
449 } >"$squash_msg"
451 case $1 in
452 squash)
453 rm -f "$fixup_msg"
454 echo
455 printf '%s\n' "$comment_char $(this_nth_commit_message $count)"
456 echo
457 commit_message $2
459 fixup)
460 echo
461 printf '%s\n' "$comment_char $(skip_nth_commit_message $count)"
462 echo
463 # Change the space after the comment character to TAB:
464 commit_message $2 | git stripspace --comment-lines | sed -e 's/ / /'
466 esac >>"$squash_msg"
469 peek_next_command () {
470 git stripspace --strip-comments <"$todo" | sed -n -e 's/ .*//p' -e q
473 # A squash/fixup has failed. Prepare the long version of the squash
474 # commit message, then die_with_patch. This code path requires the
475 # user to edit the combined commit message for all commits that have
476 # been squashed/fixedup so far. So also erase the old squash
477 # messages, effectively causing the combined commit to be used as the
478 # new basis for any further squash/fixups. Args: sha1 rest
479 die_failed_squash() {
480 sha1=$1
481 rest=$2
482 mv "$squash_msg" "$msg" || exit
483 rm -f "$fixup_msg"
484 cp "$msg" "$GIT_DIR"/MERGE_MSG || exit
485 warn
486 warn "$(eval_gettext "Could not apply \$sha1... \$rest")"
487 die_with_patch $sha1 ""
490 flush_rewritten_pending() {
491 test -s "$rewritten_pending" || return
492 newsha1="$(git rev-parse HEAD^0)"
493 sed "s/$/ $newsha1/" < "$rewritten_pending" >> "$rewritten_list"
494 rm -f "$rewritten_pending"
497 record_in_rewritten() {
498 oldsha1="$(git rev-parse $1)"
499 echo "$oldsha1" >> "$rewritten_pending"
501 case "$(peek_next_command)" in
502 squash|s|fixup|f)
505 flush_rewritten_pending
507 esac
510 do_pick () {
511 sha1=$1
512 rest=$2
513 if test "$(git rev-parse HEAD)" = "$squash_onto"
514 then
515 # Set the correct commit message and author info on the
516 # sentinel root before cherry-picking the original changes
517 # without committing (-n). Finally, update the sentinel again
518 # to include these changes. If the cherry-pick results in a
519 # conflict, this means our behaviour is similar to a standard
520 # failed cherry-pick during rebase, with a dirty index to
521 # resolve before manually running git commit --amend then git
522 # rebase --continue.
523 git commit --allow-empty --allow-empty-message --amend \
524 --no-post-rewrite -n -q -C $sha1 &&
525 pick_one -n $sha1 &&
526 git commit --allow-empty --allow-empty-message \
527 --amend --no-post-rewrite -n -q -C $sha1 \
528 ${gpg_sign_opt:+"$gpg_sign_opt"} ||
529 die_with_patch $sha1 "$(eval_gettext "Could not apply \$sha1... \$rest")"
530 else
531 pick_one $sha1 ||
532 die_with_patch $sha1 "$(eval_gettext "Could not apply \$sha1... \$rest")"
536 do_next () {
537 rm -f "$msg" "$author_script" "$amend" "$state_dir"/stopped-sha || exit
538 read -r command sha1 rest < "$todo"
539 case "$command" in
540 "$comment_char"*|''|noop|drop|d)
541 mark_action_done
543 "$cr")
544 # Work around CR left by "read" (e.g. with Git for Windows' Bash).
545 mark_action_done
547 pick|p)
548 comment_for_reflog pick
550 mark_action_done
551 do_pick $sha1 "$rest"
552 record_in_rewritten $sha1
554 reword|r)
555 comment_for_reflog reword
557 mark_action_done
558 do_pick $sha1 "$rest"
559 git commit --amend --no-post-rewrite ${gpg_sign_opt:+"$gpg_sign_opt"} || {
560 warn "$(eval_gettext "\
561 Could not amend commit after successfully picking \$sha1... \$rest
562 This is most likely due to an empty commit message, or the pre-commit hook
563 failed. If the pre-commit hook failed, you may need to resolve the issue before
564 you are able to reword the commit.")"
565 exit_with_patch $sha1 1
567 record_in_rewritten $sha1
569 edit|e)
570 comment_for_reflog edit
572 mark_action_done
573 do_pick $sha1 "$rest"
574 sha1_abbrev=$(git rev-parse --short $sha1)
575 warn "$(eval_gettext "Stopped at \$sha1_abbrev... \$rest")"
576 exit_with_patch $sha1 0
578 squash|s|fixup|f)
579 case "$command" in
580 squash|s)
581 squash_style=squash
583 fixup|f)
584 squash_style=fixup
586 esac
587 comment_for_reflog $squash_style
589 test -f "$done" && has_action "$done" ||
590 die "$(eval_gettext "Cannot '\$squash_style' without a previous commit")"
592 mark_action_done
593 update_squash_messages $squash_style $sha1
594 author_script_content=$(get_author_ident_from_commit HEAD)
595 echo "$author_script_content" > "$author_script"
596 eval "$author_script_content"
597 if ! pick_one -n $sha1
598 then
599 git rev-parse --verify HEAD >"$amend"
600 die_failed_squash $sha1 "$rest"
602 case "$(peek_next_command)" in
603 squash|s|fixup|f)
604 # This is an intermediate commit; its message will only be
605 # used in case of trouble. So use the long version:
606 do_with_author output git commit --amend --no-verify -F "$squash_msg" \
607 ${gpg_sign_opt:+"$gpg_sign_opt"} ||
608 die_failed_squash $sha1 "$rest"
611 # This is the final command of this squash/fixup group
612 if test -f "$fixup_msg"
613 then
614 do_with_author git commit --amend --no-verify -F "$fixup_msg" \
615 ${gpg_sign_opt:+"$gpg_sign_opt"} ||
616 die_failed_squash $sha1 "$rest"
617 else
618 cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit
619 rm -f "$GIT_DIR"/MERGE_MSG
620 do_with_author git commit --amend --no-verify -F "$GIT_DIR"/SQUASH_MSG -e \
621 ${gpg_sign_opt:+"$gpg_sign_opt"} ||
622 die_failed_squash $sha1 "$rest"
624 rm -f "$squash_msg" "$fixup_msg"
626 esac
627 record_in_rewritten $sha1
629 x|"exec")
630 read -r command rest < "$todo"
631 mark_action_done
632 eval_gettextln "Executing: \$rest"
633 "${SHELL:-@SHELL_PATH@}" -c "$rest" # Actual execution
634 status=$?
635 # Run in subshell because require_clean_work_tree can die.
636 dirty=f
637 (require_clean_work_tree "rebase" 2>/dev/null) || dirty=t
638 if test "$status" -ne 0
639 then
640 warn "$(eval_gettext "Execution failed: \$rest")"
641 test "$dirty" = f ||
642 warn "$(gettext "and made changes to the index and/or the working tree")"
644 warn "$(gettext "\
645 You can fix the problem, and then run
647 git rebase --continue")"
648 warn
649 if test $status -eq 127 # command not found
650 then
651 status=1
653 exit "$status"
654 elif test "$dirty" = t
655 then
656 # TRANSLATORS: after these lines is a command to be issued by the user
657 warn "$(eval_gettext "\
658 Execution succeeded: \$rest
659 but left changes to the index and/or the working tree
660 Commit or stash your changes, and then run
662 git rebase --continue")"
663 warn
664 exit 1
668 warn "$(eval_gettext "Unknown command: \$command \$sha1 \$rest")"
669 fixtodo="$(gettext "Please fix this using 'git rebase --edit-todo'.")"
670 if git rev-parse --verify -q "$sha1" >/dev/null
671 then
672 die_with_patch $sha1 "$fixtodo"
673 else
674 die "$fixtodo"
677 esac
678 test -s "$todo" && return
680 comment_for_reflog finish &&
681 newhead=$(git rev-parse HEAD) &&
682 case $head_name in
683 refs/*)
684 message="$GIT_REFLOG_ACTION: $head_name onto $onto" &&
685 git update-ref -m "$message" $head_name $newhead $orig_head &&
686 git symbolic-ref \
687 -m "$GIT_REFLOG_ACTION: returning to $head_name" \
688 HEAD $head_name
690 esac && {
691 test ! -f "$state_dir"/verbose ||
692 git diff-tree --stat $orig_head..HEAD
693 } &&
695 test -s "$rewritten_list" &&
696 git notes copy --for-rewrite=rebase < "$rewritten_list" ||
697 true # we don't care if this copying failed
698 } &&
699 hook="$(git rev-parse --git-path hooks/post-rewrite)"
700 if test -x "$hook" && test -s "$rewritten_list"; then
701 "$hook" rebase < "$rewritten_list"
702 true # we don't care if this hook failed
703 fi &&
704 warn "$(eval_gettext "Successfully rebased and updated \$head_name.")"
706 return 1 # not failure; just to break the do_rest loop
709 # can only return 0, when the infinite loop breaks
710 do_rest () {
711 while :
713 do_next || break
714 done
717 expand_todo_ids() {
718 git rebase--helper --expand-ids
721 collapse_todo_ids() {
722 git rebase--helper --shorten-ids
725 # Switch to the branch in $into and notify it in the reflog
726 checkout_onto () {
727 GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
728 output git checkout $onto || die_abort "$(gettext "could not detach HEAD")"
729 git update-ref ORIG_HEAD $orig_head
732 get_missing_commit_check_level () {
733 check_level=$(git config --get rebase.missingCommitsCheck)
734 check_level=${check_level:-ignore}
735 # Don't be case sensitive
736 printf '%s' "$check_level" | tr 'A-Z' 'a-z'
739 # The whole contents of this file is run by dot-sourcing it from
740 # inside a shell function. It used to be that "return"s we see
741 # below were not inside any function, and expected to return
742 # to the function that dot-sourced us.
744 # However, older (9.x) versions of FreeBSD /bin/sh misbehave on such a
745 # construct and continue to run the statements that follow such a "return".
746 # As a work-around, we introduce an extra layer of a function
747 # here, and immediately call it after defining it.
748 git_rebase__interactive () {
750 case "$action" in
751 continue)
752 if test ! -d "$rewritten"
753 then
754 exec git rebase--helper ${force_rebase:+--no-ff} --continue
756 # do we have anything to commit?
757 if git diff-index --cached --quiet HEAD --
758 then
759 # Nothing to commit -- skip this commit
761 test ! -f "$GIT_DIR"/CHERRY_PICK_HEAD ||
762 rm "$GIT_DIR"/CHERRY_PICK_HEAD ||
763 die "$(gettext "Could not remove CHERRY_PICK_HEAD")"
764 else
765 if ! test -f "$author_script"
766 then
767 gpg_sign_opt_quoted=${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")}
768 die "$(eval_gettext "\
769 You have staged changes in your working tree.
770 If these changes are meant to be
771 squashed into the previous commit, run:
773 git commit --amend \$gpg_sign_opt_quoted
775 If they are meant to go into a new commit, run:
777 git commit \$gpg_sign_opt_quoted
779 In both cases, once you're done, continue with:
781 git rebase --continue
784 . "$author_script" ||
785 die "$(gettext "Error trying to find the author identity to amend commit")"
786 if test -f "$amend"
787 then
788 current_head=$(git rev-parse --verify HEAD)
789 test "$current_head" = $(cat "$amend") ||
790 die "$(gettext "\
791 You have uncommitted changes in your working tree. Please commit them
792 first and then run 'git rebase --continue' again.")"
793 do_with_author git commit --amend --no-verify -F "$msg" -e \
794 ${gpg_sign_opt:+"$gpg_sign_opt"} ||
795 die "$(gettext "Could not commit staged changes.")"
796 else
797 do_with_author git commit --no-verify -F "$msg" -e \
798 ${gpg_sign_opt:+"$gpg_sign_opt"} ||
799 die "$(gettext "Could not commit staged changes.")"
803 if test -r "$state_dir"/stopped-sha
804 then
805 record_in_rewritten "$(cat "$state_dir"/stopped-sha)"
808 require_clean_work_tree "rebase"
809 do_rest
810 return 0
812 skip)
813 git rerere clear
815 if test ! -d "$rewritten"
816 then
817 exec git rebase--helper ${force_rebase:+--no-ff} --continue
819 do_rest
820 return 0
822 edit-todo)
823 git stripspace --strip-comments <"$todo" >"$todo".new
824 mv -f "$todo".new "$todo"
825 collapse_todo_ids
826 append_todo_help
827 gettext "
828 You are editing the todo file of an ongoing interactive rebase.
829 To continue rebase after editing, run:
830 git rebase --continue
832 " | git stripspace --comment-lines >>"$todo"
834 git_sequence_editor "$todo" ||
835 die "$(gettext "Could not execute editor")"
836 expand_todo_ids
838 exit
840 esac
842 comment_for_reflog start
844 if test ! -z "$switch_to"
845 then
846 GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to"
847 output git checkout "$switch_to" -- ||
848 die "$(eval_gettext "Could not checkout \$switch_to")"
850 comment_for_reflog start
853 orig_head=$(git rev-parse --verify HEAD) || die "$(gettext "No HEAD?")"
854 mkdir -p "$state_dir" || die "$(eval_gettext "Could not create temporary \$state_dir")"
856 : > "$state_dir"/interactive || die "$(gettext "Could not mark as interactive")"
857 write_basic_state
858 if test t = "$preserve_merges"
859 then
860 if test -z "$rebase_root"
861 then
862 mkdir "$rewritten" &&
863 for c in $(git merge-base --all $orig_head $upstream)
865 echo $onto > "$rewritten"/$c ||
866 die "$(gettext "Could not init rewritten commits")"
867 done
868 else
869 mkdir "$rewritten" &&
870 echo $onto > "$rewritten"/root ||
871 die "$(gettext "Could not init rewritten commits")"
873 # No cherry-pick because our first pass is to determine
874 # parents to rewrite and skipping dropped commits would
875 # prematurely end our probe
876 merges_option=
877 else
878 merges_option="--no-merges --cherry-pick"
881 shorthead=$(git rev-parse --short $orig_head)
882 shortonto=$(git rev-parse --short $onto)
883 if test -z "$rebase_root"
884 # this is now equivalent to ! -z "$upstream"
885 then
886 shortupstream=$(git rev-parse --short $upstream)
887 revisions=$upstream...$orig_head
888 shortrevisions=$shortupstream..$shorthead
889 else
890 revisions=$onto...$orig_head
891 shortrevisions=$shorthead
893 if test t != "$preserve_merges"
894 then
895 git rebase--helper --make-script ${keep_empty:+--keep-empty} \
896 $revisions ${restrict_revision+^$restrict_revision} >"$todo"
897 else
898 format=$(git config --get rebase.instructionFormat)
899 # the 'rev-list .. | sed' requires %m to parse; the instruction requires %H to parse
900 git rev-list $merges_option --format="%m%H ${format:-%s}" \
901 --reverse --left-right --topo-order \
902 $revisions ${restrict_revision+^$restrict_revision} | \
903 sed -n "s/^>//p" |
904 while read -r sha1 rest
907 if test -z "$keep_empty" && is_empty_commit $sha1 && ! is_merge_commit $sha1
908 then
909 comment_out="$comment_char "
910 else
911 comment_out=
914 if test -z "$rebase_root"
915 then
916 preserve=t
917 for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)
919 if test -f "$rewritten"/$p
920 then
921 preserve=f
923 done
924 else
925 preserve=f
927 if test f = "$preserve"
928 then
929 touch "$rewritten"/$sha1
930 printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo"
932 done
935 # Watch for commits that been dropped by --cherry-pick
936 if test t = "$preserve_merges"
937 then
938 mkdir "$dropped"
939 # Save all non-cherry-picked changes
940 git rev-list $revisions --left-right --cherry-pick | \
941 sed -n "s/^>//p" > "$state_dir"/not-cherry-picks
942 # Now all commits and note which ones are missing in
943 # not-cherry-picks and hence being dropped
944 git rev-list $revisions |
945 while read rev
947 if test -f "$rewritten"/$rev &&
948 ! sane_grep "$rev" "$state_dir"/not-cherry-picks >/dev/null
949 then
950 # Use -f2 because if rev-list is telling us this commit is
951 # not worthwhile, we don't want to track its multiple heads,
952 # just the history of its first-parent for others that will
953 # be rebasing on top of it
954 git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev
955 sha1=$(git rev-list -1 $rev)
956 sane_grep -v "^[a-z][a-z]* $sha1" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo"
957 rm "$rewritten"/$rev
959 done
962 test -s "$todo" || echo noop >> "$todo"
963 test -z "$autosquash" || git rebase--helper --rearrange-squash || exit
964 test -n "$cmd" && git rebase--helper --add-exec-commands "$cmd"
966 todocount=$(git stripspace --strip-comments <"$todo" | wc -l)
967 todocount=${todocount##* }
969 cat >>"$todo" <<EOF
971 $comment_char $(eval_ngettext \
972 "Rebase \$shortrevisions onto \$shortonto (\$todocount command)" \
973 "Rebase \$shortrevisions onto \$shortonto (\$todocount commands)" \
974 "$todocount")
976 append_todo_help
977 gettext "
978 However, if you remove everything, the rebase will be aborted.
980 " | git stripspace --comment-lines >>"$todo"
982 if test -z "$keep_empty"
983 then
984 printf '%s\n' "$comment_char $(gettext "Note that empty commits are commented out")" >>"$todo"
988 has_action "$todo" ||
989 return 2
991 cp "$todo" "$todo".backup
992 collapse_todo_ids
993 git_sequence_editor "$todo" ||
994 die_abort "$(gettext "Could not execute editor")"
996 has_action "$todo" ||
997 return 2
999 git rebase--helper --check-todo-list || {
1000 ret=$?
1001 checkout_onto
1002 exit $ret
1005 expand_todo_ids
1007 test -d "$rewritten" || test -n "$force_rebase" ||
1008 onto="$(git rebase--helper --skip-unnecessary-picks)" ||
1009 die "Could not skip unnecessary pick commands"
1011 checkout_onto
1012 if test -z "$rebase_root" && test ! -d "$rewritten"
1013 then
1014 require_clean_work_tree "rebase"
1015 exec git rebase--helper ${force_rebase:+--no-ff} --continue
1017 do_rest
1020 # ... and then we call the whole thing.
1021 git_rebase__interactive