[GSoC][PATCH v3 4/4] rebase: remove -p code from git-rebase--interactive.sh

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All the code specific to preserve-merges was moved to
git-rebase--preserve-merges.sh, and so it’s useless to keep it here.

Signed-off-by: Alban Gruin <alban.gruin@xxxxxxxxx>
---
 git-rebase--interactive.sh | 802 +--------------------------------------------
 1 file changed, 8 insertions(+), 794 deletions(-)

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 2f4941d0f..9884ecd71 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -13,83 +13,6 @@
 # file and written to the tail of $done.
 todo="$state_dir"/git-rebase-todo
 
-# The rebase command lines that have already been processed.  A line
-# is moved here when it is first handled, before any associated user
-# actions.
-done="$state_dir"/done
-
-# The commit message that is planned to be used for any changes that
-# need to be committed following a user interaction.
-msg="$state_dir"/message
-
-# The file into which is accumulated the suggested commit message for
-# squash/fixup commands.  When the first of a series of squash/fixups
-# is seen, the file is created and the commit message from the
-# previous commit and from the first squash/fixup commit are written
-# to it.  The commit message for each subsequent squash/fixup commit
-# is appended to the file as it is processed.
-#
-# The first line of the file is of the form
-#     # This is a combination of $count commits.
-# where $count is the number of commits whose messages have been
-# written to the file so far (including the initial "pick" commit).
-# Each time that a commit message is processed, this line is read and
-# updated.  It is deleted just before the combined commit is made.
-squash_msg="$state_dir"/message-squash
-
-# If the current series of squash/fixups has not yet included a squash
-# command, then this file exists and holds the commit message of the
-# original "pick" commit.  (If the series ends without a "squash"
-# command, then this can be used as the commit message of the combined
-# commit without opening the editor.)
-fixup_msg="$state_dir"/message-fixup
-
-# $rewritten is the name of a directory containing files for each
-# commit that is reachable by at least one merge base of $head and
-# $upstream. They are not necessarily rewritten, but their children
-# might be.  This ensures that commits on merged, but otherwise
-# unrelated side branches are left alone. (Think "X" in the man page's
-# example.)
-rewritten="$state_dir"/rewritten
-
-dropped="$state_dir"/dropped
-
-end="$state_dir"/end
-msgnum="$state_dir"/msgnum
-
-# A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
-# GIT_AUTHOR_DATE that will be used for the commit that is currently
-# being rebased.
-author_script="$state_dir"/author-script
-
-# When an "edit" rebase command is being processed, the SHA1 of the
-# commit to be edited is recorded in this file.  When "git rebase
-# --continue" is executed, if there are any staged changes then they
-# will be amended to the HEAD commit, but only provided the HEAD
-# commit is still the commit to be edited.  When any other rebase
-# command is processed, this file is deleted.
-amend="$state_dir"/amend
-
-# For the post-rewrite hook, we make a list of rewritten commits and
-# their new sha1s.  The rewritten-pending list keeps the sha1s of
-# commits that have been processed, but not committed yet,
-# e.g. because they are waiting for a 'squash' command.
-rewritten_list="$state_dir"/rewritten-list
-rewritten_pending="$state_dir"/rewritten-pending
-
-# Work around Git for Windows' Bash whose "read" does not strip CRLF
-# and leaves CR at the end instead.
-cr=$(printf "\015")
-
-strategy_args=${strategy:+--strategy=$strategy}
-test -n "$strategy_opts" &&
-eval '
-	for strategy_opt in '"$strategy_opts"'
-	do
-		strategy_args="$strategy_args -X$(git rev-parse --sq-quote "${strategy_opt#--}")"
-	done
-'
-
 GIT_CHERRY_PICK_HELP="$resolvemsg"
 export GIT_CHERRY_PICK_HELP
 
@@ -105,15 +28,6 @@ case "$comment_char" in
 	;;
 esac
 
-warn () {
-	printf '%s\n' "$*" >&2
-}
-
-# Output the commit message for the specified commit.
-commit_message () {
-	git cat-file commit "$1" | sed "1,/^$/d"
-}
-
 orig_reflog_action="$GIT_REFLOG_ACTION"
 
 comment_for_reflog () {
@@ -125,33 +39,6 @@ comment_for_reflog () {
 	esac
 }
 
-last_count=
-mark_action_done () {
-	sed -e 1q < "$todo" >> "$done"
-	sed -e 1d < "$todo" >> "$todo".new
-	mv -f "$todo".new "$todo"
-	new_count=$(( $(git stripspace --strip-comments <"$done" | wc -l) ))
-	echo $new_count >"$msgnum"
-	total=$(($new_count + $(git stripspace --strip-comments <"$todo" | wc -l)))
-	echo $total >"$end"
-	if test "$last_count" != "$new_count"
-	then
-		last_count=$new_count
-		eval_gettext "Rebasing (\$new_count/\$total)"; printf "\r"
-		test -z "$verbose" || echo
-	fi
-}
-
-# Put the last action marked done at the beginning of the todo list
-# again. If there has not been an action marked done yet, leave the list of
-# items on the todo list unchanged.
-reschedule_last_action () {
-	tail -n 1 "$done" | cat - "$todo" >"$todo".new
-	sed -e \$d <"$done" >"$done".new
-	mv -f "$todo".new "$todo"
-	mv -f "$done".new "$done"
-}
-
 append_todo_help () {
 	gettext "
 Commands:
@@ -184,50 +71,6 @@ If you remove a line here THAT COMMIT WILL BE LOST.
 	fi
 }
 
-make_patch () {
-	sha1_and_parents="$(git rev-list --parents -1 "$1")"
-	case "$sha1_and_parents" in
-	?*' '?*' '?*)
-		git diff --cc $sha1_and_parents
-		;;
-	?*' '?*)
-		git diff-tree -p "$1^!"
-		;;
-	*)
-		echo "Root commit"
-		;;
-	esac > "$state_dir"/patch
-	test -f "$msg" ||
-		commit_message "$1" > "$msg"
-	test -f "$author_script" ||
-		get_author_ident_from_commit "$1" > "$author_script"
-}
-
-die_with_patch () {
-	echo "$1" > "$state_dir"/stopped-sha
-	git update-ref REBASE_HEAD "$1"
-	make_patch "$1"
-	die "$2"
-}
-
-exit_with_patch () {
-	echo "$1" > "$state_dir"/stopped-sha
-	git update-ref REBASE_HEAD "$1"
-	make_patch $1
-	git rev-parse --verify HEAD > "$amend"
-	gpg_sign_opt_quoted=${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")}
-	warn "$(eval_gettext "\
-You can amend the commit now, with
-
-	git commit --amend \$gpg_sign_opt_quoted
-
-Once you are satisfied with your changes, run
-
-	git rebase --continue")"
-	warn
-	exit $2
-}
-
 die_abort () {
 	apply_autostash
 	rm -rf "$state_dir"
@@ -238,30 +81,6 @@ has_action () {
 	test -n "$(git stripspace --strip-comments <"$1")"
 }
 
-is_empty_commit() {
-	tree=$(git rev-parse -q --verify "$1"^{tree} 2>/dev/null) || {
-		sha1=$1
-		die "$(eval_gettext "\$sha1: not a commit that can be picked")"
-	}
-	ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null) ||
-		ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
-	test "$tree" = "$ptree"
-}
-
-is_merge_commit()
-{
-	git rev-parse --verify --quiet "$1"^2 >/dev/null 2>&1
-}
-
-# Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
-# GIT_AUTHOR_DATE exported from the current environment.
-do_with_author () {
-	(
-		export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
-		"$@"
-	)
-}
-
 git_sequence_editor () {
 	if test -z "$GIT_SEQUENCE_EDITOR"
 	then
@@ -275,455 +94,6 @@ git_sequence_editor () {
 	eval "$GIT_SEQUENCE_EDITOR" '"$@"'
 }
 
-pick_one () {
-	ff=--ff
-
-	case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac
-	case "$force_rebase" in '') ;; ?*) ff= ;; esac
-	output git rev-parse --verify $sha1 || die "$(eval_gettext "Invalid commit name: \$sha1")"
-
-	if is_empty_commit "$sha1"
-	then
-		empty_args="--allow-empty"
-	fi
-
-	test -d "$rewritten" &&
-		pick_one_preserving_merges "$@" && return
-	output eval git cherry-pick $allow_rerere_autoupdate $allow_empty_message \
-			${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
-			$signoff "$strategy_args" $empty_args $ff "$@"
-
-	# If cherry-pick dies it leaves the to-be-picked commit unrecorded. Reschedule
-	# previous task so this commit is not lost.
-	ret=$?
-	case "$ret" in [01]) ;; *) reschedule_last_action ;; esac
-	return $ret
-}
-
-pick_one_preserving_merges () {
-	fast_forward=t
-	case "$1" in
-	-n)
-		fast_forward=f
-		sha1=$2
-		;;
-	*)
-		sha1=$1
-		;;
-	esac
-	sha1=$(git rev-parse $sha1)
-
-	if test -f "$state_dir"/current-commit && test "$fast_forward" = t
-	then
-		while read current_commit
-		do
-			git rev-parse HEAD > "$rewritten"/$current_commit
-		done <"$state_dir"/current-commit
-		rm "$state_dir"/current-commit ||
-			die "$(gettext "Cannot write current commit's replacement sha1")"
-	fi
-
-	echo $sha1 >> "$state_dir"/current-commit
-
-	# rewrite parents; if none were rewritten, we can fast-forward.
-	new_parents=
-	pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)"
-	if test "$pend" = " "
-	then
-		pend=" root"
-	fi
-	while [ "$pend" != "" ]
-	do
-		p=$(expr "$pend" : ' \([^ ]*\)')
-		pend="${pend# $p}"
-
-		if test -f "$rewritten"/$p
-		then
-			new_p=$(cat "$rewritten"/$p)
-
-			# If the todo reordered commits, and our parent is marked for
-			# rewriting, but hasn't been gotten to yet, assume the user meant to
-			# drop it on top of the current HEAD
-			if test -z "$new_p"
-			then
-				new_p=$(git rev-parse HEAD)
-			fi
-
-			test $p != $new_p && fast_forward=f
-			case "$new_parents" in
-			*$new_p*)
-				;; # do nothing; that parent is already there
-			*)
-				new_parents="$new_parents $new_p"
-				;;
-			esac
-		else
-			if test -f "$dropped"/$p
-			then
-				fast_forward=f
-				replacement="$(cat "$dropped"/$p)"
-				test -z "$replacement" && replacement=root
-				pend=" $replacement$pend"
-			else
-				new_parents="$new_parents $p"
-			fi
-		fi
-	done
-	case $fast_forward in
-	t)
-		output warn "$(eval_gettext "Fast-forward to \$sha1")"
-		output git reset --hard $sha1 ||
-			die "$(eval_gettext "Cannot fast-forward to \$sha1")"
-		;;
-	f)
-		first_parent=$(expr "$new_parents" : ' \([^ ]*\)')
-
-		if [ "$1" != "-n" ]
-		then
-			# detach HEAD to current parent
-			output git checkout $first_parent 2> /dev/null ||
-				die "$(eval_gettext "Cannot move HEAD to \$first_parent")"
-		fi
-
-		case "$new_parents" in
-		' '*' '*)
-			test "a$1" = a-n && die "$(eval_gettext "Refusing to squash a merge: \$sha1")"
-
-			# redo merge
-			author_script_content=$(get_author_ident_from_commit $sha1)
-			eval "$author_script_content"
-			msg_content="$(commit_message $sha1)"
-			# No point in merging the first parent, that's HEAD
-			new_parents=${new_parents# $first_parent}
-			merge_args="--no-log --no-ff"
-			if ! do_with_author output eval \
-				git merge ${gpg_sign_opt:+$(git rev-parse \
-					--sq-quote "$gpg_sign_opt")} \
-				$allow_rerere_autoupdate "$merge_args" \
-				"$strategy_args" \
-				-m "$(git rev-parse --sq-quote "$msg_content")" \
-				"$new_parents"
-			then
-				printf "%s\n" "$msg_content" > "$GIT_DIR"/MERGE_MSG
-				die_with_patch $sha1 "$(eval_gettext "Error redoing merge \$sha1")"
-			fi
-			echo "$sha1 $(git rev-parse HEAD^0)" >> "$rewritten_list"
-			;;
-		*)
-			output eval git cherry-pick $allow_rerere_autoupdate \
-				$allow_empty_message \
-				${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
-				"$strategy_args" "$@" ||
-				die_with_patch $sha1 "$(eval_gettext "Could not pick \$sha1")"
-			;;
-		esac
-		;;
-	esac
-}
-
-this_nth_commit_message () {
-	n=$1
-	eval_gettext "This is the commit message #\${n}:"
-}
-
-skip_nth_commit_message () {
-	n=$1
-	eval_gettext "The commit message #\${n} will be skipped:"
-}
-
-update_squash_messages () {
-	if test -f "$squash_msg"; then
-		mv "$squash_msg" "$squash_msg".bak || exit
-		count=$(($(sed -n \
-			-e "1s/^$comment_char[^0-9]*\([0-9][0-9]*\).*/\1/p" \
-			-e "q" < "$squash_msg".bak)+1))
-		{
-			printf '%s\n' "$comment_char $(eval_ngettext \
-				"This is a combination of \$count commit." \
-				"This is a combination of \$count commits." \
-				$count)"
-			sed -e 1d -e '2,/^./{
-				/^$/d
-			}' <"$squash_msg".bak
-		} >"$squash_msg"
-	else
-		commit_message HEAD >"$fixup_msg" ||
-		die "$(eval_gettext "Cannot write \$fixup_msg")"
-		count=2
-		{
-			printf '%s\n' "$comment_char $(gettext "This is a combination of 2 commits.")"
-			printf '%s\n' "$comment_char $(gettext "This is the 1st commit message:")"
-			echo
-			cat "$fixup_msg"
-		} >"$squash_msg"
-	fi
-	case $1 in
-	squash)
-		rm -f "$fixup_msg"
-		echo
-		printf '%s\n' "$comment_char $(this_nth_commit_message $count)"
-		echo
-		commit_message $2
-		;;
-	fixup)
-		echo
-		printf '%s\n' "$comment_char $(skip_nth_commit_message $count)"
-		echo
-		# Change the space after the comment character to TAB:
-		commit_message $2 | git stripspace --comment-lines | sed -e 's/ /	/'
-		;;
-	esac >>"$squash_msg"
-}
-
-peek_next_command () {
-	git stripspace --strip-comments <"$todo" | sed -n -e 's/ .*//p' -e q
-}
-
-# A squash/fixup has failed.  Prepare the long version of the squash
-# commit message, then die_with_patch.  This code path requires the
-# user to edit the combined commit message for all commits that have
-# been squashed/fixedup so far.  So also erase the old squash
-# messages, effectively causing the combined commit to be used as the
-# new basis for any further squash/fixups.  Args: sha1 rest
-die_failed_squash() {
-	sha1=$1
-	rest=$2
-	mv "$squash_msg" "$msg" || exit
-	rm -f "$fixup_msg"
-	cp "$msg" "$GIT_DIR"/MERGE_MSG || exit
-	warn
-	warn "$(eval_gettext "Could not apply \$sha1... \$rest")"
-	die_with_patch $sha1 ""
-}
-
-flush_rewritten_pending() {
-	test -s "$rewritten_pending" || return
-	newsha1="$(git rev-parse HEAD^0)"
-	sed "s/$/ $newsha1/" < "$rewritten_pending" >> "$rewritten_list"
-	rm -f "$rewritten_pending"
-}
-
-record_in_rewritten() {
-	oldsha1="$(git rev-parse $1)"
-	echo "$oldsha1" >> "$rewritten_pending"
-
-	case "$(peek_next_command)" in
-	squash|s|fixup|f)
-		;;
-	*)
-		flush_rewritten_pending
-		;;
-	esac
-}
-
-do_pick () {
-	sha1=$1
-	rest=$2
-	if test "$(git rev-parse HEAD)" = "$squash_onto"
-	then
-		# Set the correct commit message and author info on the
-		# sentinel root before cherry-picking the original changes
-		# without committing (-n).  Finally, update the sentinel again
-		# to include these changes.  If the cherry-pick results in a
-		# conflict, this means our behaviour is similar to a standard
-		# failed cherry-pick during rebase, with a dirty index to
-		# resolve before manually running git commit --amend then git
-		# rebase --continue.
-		git commit --allow-empty --allow-empty-message --amend \
-			   --no-post-rewrite -n -q -C $sha1 $signoff &&
-			pick_one -n $sha1 &&
-			git commit --allow-empty --allow-empty-message \
-				   --amend --no-post-rewrite -n -q -C $sha1 $signoff \
-				   ${gpg_sign_opt:+"$gpg_sign_opt"} ||
-				   die_with_patch $sha1 "$(eval_gettext "Could not apply \$sha1... \$rest")"
-	else
-		pick_one $sha1 ||
-			die_with_patch $sha1 "$(eval_gettext "Could not apply \$sha1... \$rest")"
-	fi
-}
-
-do_next () {
-	rm -f "$msg" "$author_script" "$amend" "$state_dir"/stopped-sha || exit
-	read -r command sha1 rest < "$todo"
-	case "$command" in
-	"$comment_char"*|''|noop|drop|d)
-		mark_action_done
-		;;
-	"$cr")
-		# Work around CR left by "read" (e.g. with Git for Windows' Bash).
-		mark_action_done
-		;;
-	pick|p)
-		comment_for_reflog pick
-
-		mark_action_done
-		do_pick $sha1 "$rest"
-		record_in_rewritten $sha1
-		;;
-	reword|r)
-		comment_for_reflog reword
-
-		mark_action_done
-		do_pick $sha1 "$rest"
-		git commit --amend --no-post-rewrite ${gpg_sign_opt:+"$gpg_sign_opt"} \
-			$allow_empty_message || {
-			warn "$(eval_gettext "\
-Could not amend commit after successfully picking \$sha1... \$rest
-This is most likely due to an empty commit message, or the pre-commit hook
-failed. If the pre-commit hook failed, you may need to resolve the issue before
-you are able to reword the commit.")"
-			exit_with_patch $sha1 1
-		}
-		record_in_rewritten $sha1
-		;;
-	edit|e)
-		comment_for_reflog edit
-
-		mark_action_done
-		do_pick $sha1 "$rest"
-		sha1_abbrev=$(git rev-parse --short $sha1)
-		warn "$(eval_gettext "Stopped at \$sha1_abbrev... \$rest")"
-		exit_with_patch $sha1 0
-		;;
-	squash|s|fixup|f)
-		case "$command" in
-		squash|s)
-			squash_style=squash
-			;;
-		fixup|f)
-			squash_style=fixup
-			;;
-		esac
-		comment_for_reflog $squash_style
-
-		test -f "$done" && has_action "$done" ||
-			die "$(eval_gettext "Cannot '\$squash_style' without a previous commit")"
-
-		mark_action_done
-		update_squash_messages $squash_style $sha1
-		author_script_content=$(get_author_ident_from_commit HEAD)
-		echo "$author_script_content" > "$author_script"
-		eval "$author_script_content"
-		if ! pick_one -n $sha1
-		then
-			git rev-parse --verify HEAD >"$amend"
-			die_failed_squash $sha1 "$rest"
-		fi
-		case "$(peek_next_command)" in
-		squash|s|fixup|f)
-			# This is an intermediate commit; its message will only be
-			# used in case of trouble.  So use the long version:
-			do_with_author output git commit --amend --no-verify -F "$squash_msg" \
-				${gpg_sign_opt:+"$gpg_sign_opt"} $allow_empty_message ||
-				die_failed_squash $sha1 "$rest"
-			;;
-		*)
-			# This is the final command of this squash/fixup group
-			if test -f "$fixup_msg"
-			then
-				do_with_author git commit --amend --no-verify -F "$fixup_msg" \
-					${gpg_sign_opt:+"$gpg_sign_opt"} $allow_empty_message ||
-					die_failed_squash $sha1 "$rest"
-			else
-				cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit
-				rm -f "$GIT_DIR"/MERGE_MSG
-				do_with_author git commit --amend --no-verify -F "$GIT_DIR"/SQUASH_MSG -e \
-					${gpg_sign_opt:+"$gpg_sign_opt"} $allow_empty_message ||
-					die_failed_squash $sha1 "$rest"
-			fi
-			rm -f "$squash_msg" "$fixup_msg"
-			;;
-		esac
-		record_in_rewritten $sha1
-		;;
-	x|"exec")
-		read -r command rest < "$todo"
-		mark_action_done
-		eval_gettextln "Executing: \$rest"
-		"${SHELL:-@SHELL_PATH@}" -c "$rest" # Actual execution
-		status=$?
-		# Run in subshell because require_clean_work_tree can die.
-		dirty=f
-		(require_clean_work_tree "rebase" 2>/dev/null) || dirty=t
-		if test "$status" -ne 0
-		then
-			warn "$(eval_gettext "Execution failed: \$rest")"
-			test "$dirty" = f ||
-				warn "$(gettext "and made changes to the index and/or the working tree")"
-
-			warn "$(gettext "\
-You can fix the problem, and then run
-
-	git rebase --continue")"
-			warn
-			if test $status -eq 127		# command not found
-			then
-				status=1
-			fi
-			exit "$status"
-		elif test "$dirty" = t
-		then
-			# TRANSLATORS: after these lines is a command to be issued by the user
-			warn "$(eval_gettext "\
-Execution succeeded: \$rest
-but left changes to the index and/or the working tree
-Commit or stash your changes, and then run
-
-	git rebase --continue")"
-			warn
-			exit 1
-		fi
-		;;
-	*)
-		warn "$(eval_gettext "Unknown command: \$command \$sha1 \$rest")"
-		fixtodo="$(gettext "Please fix this using 'git rebase --edit-todo'.")"
-		if git rev-parse --verify -q "$sha1" >/dev/null
-		then
-			die_with_patch $sha1 "$fixtodo"
-		else
-			die "$fixtodo"
-		fi
-		;;
-	esac
-	test -s "$todo" && return
-
-	comment_for_reflog finish &&
-	newhead=$(git rev-parse HEAD) &&
-	case $head_name in
-	refs/*)
-		message="$GIT_REFLOG_ACTION: $head_name onto $onto" &&
-		git update-ref -m "$message" $head_name $newhead $orig_head &&
-		git symbolic-ref \
-		  -m "$GIT_REFLOG_ACTION: returning to $head_name" \
-		  HEAD $head_name
-		;;
-	esac && {
-		test ! -f "$state_dir"/verbose ||
-			git diff-tree --stat $orig_head..HEAD
-	} &&
-	{
-		test -s "$rewritten_list" &&
-		git notes copy --for-rewrite=rebase < "$rewritten_list" ||
-		true # we don't care if this copying failed
-	} &&
-	hook="$(git rev-parse --git-path hooks/post-rewrite)"
-	if test -x "$hook" && test -s "$rewritten_list"; then
-		"$hook" rebase < "$rewritten_list"
-		true # we don't care if this hook failed
-	fi &&
-		warn "$(eval_gettext "Successfully rebased and updated \$head_name.")"
-
-	return 1 # not failure; just to break the do_rest loop
-}
-
-# can only return 0, when the infinite loop breaks
-do_rest () {
-	while :
-	do
-		do_next || break
-	done
-}
-
 expand_todo_ids() {
 	git rebase--helper --expand-ids
 }
@@ -761,77 +131,13 @@ get_missing_commit_check_level () {
 initiate_action () {
 	case "$1" in
 	continue)
-		if test ! -d "$rewritten"
-		then
-			exec git rebase--helper ${force_rebase:+--no-ff} $allow_empty_message \
-				--continue
-		fi
-		# do we have anything to commit?
-		if git diff-index --cached --quiet HEAD --
-		then
-			# Nothing to commit -- skip this commit
-
-			test ! -f "$GIT_DIR"/CHERRY_PICK_HEAD ||
-			rm "$GIT_DIR"/CHERRY_PICK_HEAD ||
-			die "$(gettext "Could not remove CHERRY_PICK_HEAD")"
-		else
-			if ! test -f "$author_script"
-			then
-				gpg_sign_opt_quoted=${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")}
-				die "$(eval_gettext "\
-You have staged changes in your working tree.
-If these changes are meant to be
-squashed into the previous commit, run:
-
-  git commit --amend \$gpg_sign_opt_quoted
-
-If they are meant to go into a new commit, run:
-
-  git commit \$gpg_sign_opt_quoted
-
-In both cases, once you're done, continue with:
-
-  git rebase --continue
-")"
-			fi
-			. "$author_script" ||
-				die "$(gettext "Error trying to find the author identity to amend commit")"
-			if test -f "$amend"
-			then
-				current_head=$(git rev-parse --verify HEAD)
-				test "$current_head" = $(cat "$amend") ||
-				die "$(gettext "\
-You have uncommitted changes in your working tree. Please commit them
-first and then run 'git rebase --continue' again.")"
-				do_with_author git commit --amend --no-verify -F "$msg" -e \
-					${gpg_sign_opt:+"$gpg_sign_opt"} $allow_empty_message ||
-					die "$(gettext "Could not commit staged changes.")"
-			else
-				do_with_author git commit --no-verify -F "$msg" -e \
-					${gpg_sign_opt:+"$gpg_sign_opt"} $allow_empty_message ||
-					die "$(gettext "Could not commit staged changes.")"
-			fi
-		fi
-
-		if test -r "$state_dir"/stopped-sha
-		then
-			record_in_rewritten "$(cat "$state_dir"/stopped-sha)"
-		fi
-
-		require_clean_work_tree "rebase"
-		do_rest
-		return 0
+		exec git rebase--helper ${force_rebase:+--no-ff} $allow_empty_message \
+		     --continue
 		;;
 	skip)
 		git rerere clear
-
-		if test ! -d "$rewritten"
-		then
-			exec git rebase--helper ${force_rebase:+--no-ff} $allow_empty_message \
-				--continue
-		fi
-		do_rest
-		return 0
+		exec git rebase--helper ${force_rebase:+--no-ff} $allow_empty_message \
+		     --continue
 		;;
 	edit-todo)
 		git stripspace --strip-comments <"$todo" >"$todo".new
@@ -945,18 +251,14 @@ EOF
 
 	expand_todo_ids
 
-	test -d "$rewritten" || test -n "$force_rebase" ||
+	test -n "$force_rebase" ||
 	onto="$(git rebase--helper --skip-unnecessary-picks)" ||
 	die "Could not skip unnecessary pick commands"
 
 	checkout_onto
-	if test ! -d "$rewritten"
-	then
-		require_clean_work_tree "rebase"
-		exec git rebase--helper ${force_rebase:+--no-ff} $allow_empty_message \
-			--continue
-	fi
-	do_rest
+	require_clean_work_tree "rebase"
+	exec git rebase--helper ${force_rebase:+--no-ff} $allow_empty_message \
+	     --continue
 }
 
 git_rebase__interactive () {
@@ -979,91 +281,3 @@ git_rebase__interactive () {
 
 	complete_action
 }
-
-git_rebase__interactive__preserve_merges () {
-	initiate_action "$action"
-	ret=$?
-	if test $ret = 0; then
-		return 0
-	fi
-
-	setup_reflog_action
-	init_basic_state
-
-	if test -z "$rebase_root"
-	then
-		mkdir "$rewritten" &&
-		for c in $(git merge-base --all $orig_head $upstream)
-		do
-			echo $onto > "$rewritten"/$c ||
-				die "$(gettext "Could not init rewritten commits")"
-		done
-	else
-		mkdir "$rewritten" &&
-		echo $onto > "$rewritten"/root ||
-			die "$(gettext "Could not init rewritten commits")"
-	fi
-
-	init_revisions_and_shortrevisions
-
-	format=$(git config --get rebase.instructionFormat)
-	# the 'rev-list .. | sed' requires %m to parse; the instruction requires %H to parse
-	git rev-list --format="%m%H ${format:-%s}" \
-		--reverse --left-right --topo-order \
-		$revisions ${restrict_revision+^$restrict_revision} | \
-		sed -n "s/^>//p" |
-	while read -r sha1 rest
-	do
-		if test -z "$keep_empty" && is_empty_commit $sha1 && ! is_merge_commit $sha1
-		then
-			comment_out="$comment_char "
-		else
-			comment_out=
-		fi
-
-		if test -z "$rebase_root"
-		then
-			preserve=t
-			for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)
-			do
-				if test -f "$rewritten"/$p
-				then
-					preserve=f
-				fi
-			done
-		else
-			preserve=f
-		fi
-		if test f = "$preserve"
-		then
-			touch "$rewritten"/$sha1
-			printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo"
-		fi
-	done
-
-	# Watch for commits that been dropped by --cherry-pick
-	mkdir "$dropped"
-	# Save all non-cherry-picked changes
-	git rev-list $revisions --left-right --cherry-pick | \
-		sed -n "s/^>//p" > "$state_dir"/not-cherry-picks
-	# Now all commits and note which ones are missing in
-	# not-cherry-picks and hence being dropped
-	git rev-list $revisions |
-	while read rev
-	do
-		if test -f "$rewritten"/$rev &&
-		   ! sane_grep "$rev" "$state_dir"/not-cherry-picks >/dev/null
-		then
-			# Use -f2 because if rev-list is telling us this commit is
-			# not worthwhile, we don't want to track its multiple heads,
-			# just the history of its first-parent for others that will
-			# be rebasing on top of it
-			git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev
-			sha1=$(git rev-list -1 $rev)
-			sane_grep -v "^[a-z][a-z]* $sha1" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo"
-			rm "$rewritten"/$rev
-		fi
-	done
-
-	complete_action
-}
-- 
2.16.1




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