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+#!/bin/sh
+#
+# Copyright (c) 2006 Johannes E. Schindelin
+
+# SHORT DESCRIPTION
+#
+# This script makes it easy to fix up commits in the middle of a series,
+# and rearrange commits.
+#
+# The original idea comes from Eric W. Biederman, in
+# http://article.gmane.org/gmane.comp.version-control.git/22407
+
+OPTIONS_KEEPDASHDASH=
+OPTIONS_SPEC="\
+git-rebase [-i] [options] [--] <upstream> [<branch>]
+git-rebase [-i] (--continue | --abort | --skip)
+--
+ Available options are
+v,verbose display a diffstat of what changed upstream
+onto= rebase onto given branch instead of upstream
+p,preserve-merges try to recreate merges instead of ignoring them
+s,strategy= use the given merge strategy
+no-ff cherry-pick all commits, even if unchanged
+m,merge always used (no-op)
+i,interactive always used (no-op)
+ Actions:
+continue continue rebasing process
+abort abort rebasing process and restore original branch
+skip skip current patch and continue rebasing process
+no-verify override pre-rebase hook from stopping the operation
+verify allow pre-rebase hook to run
+root rebase all reachable commmits up to the root(s)
+autosquash move commits that begin with squash!/fixup! under -i
+"
+
+. git-sh-setup
+require_work_tree
+
+DOTEST="$GIT_DIR/rebase-merge"
+
+# The file containing rebase commands, comments, and empty lines.
+# This file is created by "git rebase -i" then edited by the user. As
+# the lines are processed, they are removed from the front of this
+# file and written to the tail of $DONE.
+TODO="$DOTEST"/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="$DOTEST"/done
+
+# The commit message that is planned to be used for any changes that
+# need to be committed following a user interaction.
+MSG="$DOTEST"/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 $COUNT is the number of commits whose messages have been
+# written to the file so far (including the initial "pick" commit).
+# Each time that a commit message is processed, this line is read and
+# updated. It is deleted just before the combined commit is made.
+SQUASH_MSG="$DOTEST"/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="$DOTEST"/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
+# $UPSTREAM. They are not necessarily rewritten, but their children
+# might be. This ensures that commits on merged, but otherwise
+# unrelated side branches are left alone. (Think "X" in the man page's
+# example.)
+REWRITTEN="$DOTEST"/rewritten
+
+DROPPED="$DOTEST"/dropped
+
+# A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
+# GIT_AUTHOR_DATE that will be used for the commit that is currently
+# being rebased.
+AUTHOR_SCRIPT="$DOTEST"/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="$DOTEST"/amend
+
+# For the post-rewrite hook, we make a list of rewritten commits and
+# their new sha1s. The rewritten-pending list keeps the sha1s of
+# commits that have been processed, but not committed yet,
+# e.g. because they are waiting for a 'squash' command.
+REWRITTEN_LIST="$DOTEST"/rewritten-list
+REWRITTEN_PENDING="$DOTEST"/rewritten-pending
+
+PRESERVE_MERGES=
+STRATEGY=
+ONTO=
+VERBOSE=
+OK_TO_SKIP_PRE_REBASE=
+REBASE_ROOT=
+AUTOSQUASH=
+test "$(git config --bool rebase.autosquash)" = "true" && AUTOSQUASH=t
+NEVER_FF=
+
+GIT_CHERRY_PICK_HELP="\
+hint: after resolving the conflicts, mark the corrected paths
+hint: with 'git add <paths>' and run 'git rebase --continue'"
+export GIT_CHERRY_PICK_HELP
+
+warn () {
+ printf '%s\n' "$*" >&2
+}
+
+output () {
+ case "$VERBOSE" in
+ '')
+ output=$("$@" 2>&1 )
+ status=$?
+ test $status != 0 && printf "%s\n" "$output"
+ return $status
+ ;;
+ *)
+ "$@"
+ ;;
+ esac
+}
+
+# Output the commit message for the specified commit.
+commit_message () {
+ git cat-file commit "$1" | sed "1,/^$/d"
+}
+
+run_pre_rebase_hook () {
+ if test -z "$OK_TO_SKIP_PRE_REBASE" &&
+ test -x "$GIT_DIR/hooks/pre-rebase"
+ then
+ "$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || {
+ echo >&2 "The pre-rebase hook refused to rebase."
+ exit 1
+ }
+ fi
+}
+
+
+ORIG_REFLOG_ACTION="$GIT_REFLOG_ACTION"
+
+comment_for_reflog () {
+ case "$ORIG_REFLOG_ACTION" in
+ ''|rebase*)
+ GIT_REFLOG_ACTION="rebase -i ($1)"
+ export GIT_REFLOG_ACTION
+ ;;
+ esac
+}
+
+last_count=
+mark_action_done () {
+ sed -e 1q < "$TODO" >> "$DONE"
+ sed -e 1d < "$TODO" >> "$TODO".new
+ mv -f "$TODO".new "$TODO"
+ count=$(sane_grep -c '^[^#]' < "$DONE")
+ total=$(($count+$(sane_grep -c '^[^#]' < "$TODO")))
+ if test "$last_count" != "$count"
+ then
+ last_count=$count
+ printf "Rebasing (%d/%d)\r" $count $total
+ test -z "$VERBOSE" || echo
+ 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 "$1^!"
+ ;;
+ *)
+ echo "Root commit"
+ ;;
+ esac > "$DOTEST"/patch
+ test -f "$MSG" ||
+ commit_message "$1" > "$MSG"
+ test -f "$AUTHOR_SCRIPT" ||
+ get_author_ident_from_commit "$1" > "$AUTHOR_SCRIPT"
+}
+
+die_with_patch () {
+ echo "$1" > "$DOTEST"/stopped-sha
+ make_patch "$1"
+ git rerere
+ die "$2"
+}
+
+die_abort () {
+ rm -rf "$DOTEST"
+ die "$1"
+}
+
+has_action () {
+ sane_grep '^[^#]' "$1" >/dev/null
+}
+
+# Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
+# GIT_AUTHOR_DATE exported from the current environment.
+do_with_author () {
+ (
+ export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
+ "$@"
+ )
+}
+
+pick_one () {
+ ff=--ff
+ case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac
+ case "$NEVER_FF" in '') ;; ?*) ff= ;; esac
+ output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1"
+ test -d "$REWRITTEN" &&
+ pick_one_preserving_merges "$@" && return
+ if test -n "$REBASE_ROOT"
+ then
+ output git cherry-pick "$@"
+ return
+ fi
+ output git cherry-pick $ff "$@"
+}
+
+pick_one_preserving_merges () {
+ fast_forward=t
+ case "$1" in
+ -n)
+ fast_forward=f
+ sha1=$2
+ ;;
+ *)
+ sha1=$1
+ ;;
+ esac
+ sha1=$(git rev-parse $sha1)
+
+ if test -f "$DOTEST"/current-commit
+ then
+ if test "$fast_forward" = t
+ then
+ while read current_commit
+ do
+ git rev-parse HEAD > "$REWRITTEN"/$current_commit
+ done <"$DOTEST"/current-commit
+ rm "$DOTEST"/current-commit ||
+ die "Cannot write current commit's replacement sha1"
+ fi
+ fi
+
+ echo $sha1 >> "$DOTEST"/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 "Fast-forward to $sha1"
+ output git reset --hard $sha1 ||
+ die "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 "Cannot move HEAD to $first_parent"
+ fi
+
+ case "$new_parents" in
+ ' '*' '*)
+ test "a$1" = a-n && die "Refusing to squash a merge: $sha1"
+
+ # redo merge
+ author_script=$(get_author_ident_from_commit $sha1)
+ eval "$author_script"
+ msg="$(commit_message $sha1)"
+ # No point in merging the first parent, that's HEAD
+ new_parents=${new_parents# $first_parent}
+ if ! do_with_author output \
+ git merge $STRATEGY -m "$msg" $new_parents
+ then
+ printf "%s\n" "$msg" > "$GIT_DIR"/MERGE_MSG
+ die_with_patch $sha1 "Error redoing merge $sha1"
+ fi
+ echo "$sha1 $(git rev-parse HEAD^0)" >> "$REWRITTEN_LIST"
+ ;;
+ *)
+ output git cherry-pick "$@" ||
+ die_with_patch $sha1 "Could not pick $sha1"
+ ;;
+ esac
+ ;;
+ esac
+}
+
+nth_string () {
+ case "$1" in
+ *1[0-9]|*[04-9]) echo "$1"th;;
+ *1) echo "$1"st;;
+ *2) echo "$1"nd;;
+ *3) echo "$1"rd;;
+ esac
+}
+
+update_squash_messages () {
+ if test -f "$SQUASH_MSG"; then
+ mv "$SQUASH_MSG" "$SQUASH_MSG".bak || exit
+ COUNT=$(($(sed -n \
+ -e "1s/^# This is a combination of \(.*\) commits\./\1/p" \
+ -e "q" < "$SQUASH_MSG".bak)+1))
+ {
+ echo "# This is a combination of $COUNT commits."
+ sed -e 1d -e '2,/^./{
+ /^$/d
+ }' <"$SQUASH_MSG".bak
+ } >"$SQUASH_MSG"
+ else
+ commit_message HEAD > "$FIXUP_MSG" || die "Cannot write $FIXUP_MSG"
+ COUNT=2
+ {
+ echo "# This is a combination of 2 commits."
+ echo "# The first commit's message is:"
+ echo
+ cat "$FIXUP_MSG"
+ } >"$SQUASH_MSG"
+ fi
+ case $1 in
+ squash)
+ rm -f "$FIXUP_MSG"
+ echo
+ echo "# This is the $(nth_string $COUNT) commit message:"
+ echo
+ commit_message $2
+ ;;
+ fixup)
+ echo
+ echo "# The $(nth_string $COUNT) commit message will be skipped:"
+ echo
+ commit_message $2 | sed -e 's/^/# /'
+ ;;
+ esac >>"$SQUASH_MSG"
+}
+
+peek_next_command () {
+ sed -n -e "/^#/d" -e '/^$/d' -e "s/ .*//p" -e "q" < "$TODO"
+}
+
+# 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() {
+ mv "$SQUASH_MSG" "$MSG" || exit
+ rm -f "$FIXUP_MSG"
+ cp "$MSG" "$GIT_DIR"/MERGE_MSG || exit
+ warn
+ warn "Could not apply $1... $2"
+ die_with_patch $1 ""
+}
+
+flush_rewritten_pending() {
+ test -s "$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_next () {
+ rm -f "$MSG" "$AUTHOR_SCRIPT" "$AMEND" || exit
+ read -r command sha1 rest < "$TODO"
+ case "$command" in
+ '#'*|''|noop)
+ mark_action_done
+ ;;
+ pick|p)
+ comment_for_reflog pick
+
+ mark_action_done
+ pick_one $sha1 ||
+ die_with_patch $sha1 "Could not apply $sha1... $rest"
+ record_in_rewritten $sha1
+ ;;
+ reword|r)
+ comment_for_reflog reword
+
+ mark_action_done
+ pick_one $sha1 ||
+ die_with_patch $sha1 "Could not apply $sha1... $rest"
+ git commit --amend --no-post-rewrite
+ record_in_rewritten $sha1
+ ;;
+ edit|e)
+ comment_for_reflog edit
+
+ mark_action_done
+ pick_one $sha1 ||
+ die_with_patch $sha1 "Could not apply $sha1... $rest"
+ echo "$sha1" > "$DOTEST"/stopped-sha
+ make_patch $sha1
+ git rev-parse --verify HEAD > "$AMEND"
+ warn "Stopped at $sha1... $rest"
+ warn "You can amend the commit now, with"
+ warn
+ warn " git commit --amend"
+ warn
+ warn "Once you are satisfied with your changes, run"
+ warn
+ warn " git rebase --continue"
+ warn
+ exit 0
+ ;;
+ squash|s|fixup|f)
+ case "$command" in
+ squash|s)
+ squash_style=squash
+ ;;
+ fixup|f)
+ squash_style=fixup
+ ;;
+ esac
+ comment_for_reflog $squash_style
+
+ test -f "$DONE" && has_action "$DONE" ||
+ die "Cannot '$squash_style' without a previous commit"
+
+ mark_action_done
+ update_squash_messages $squash_style $sha1
+ author_script=$(get_author_ident_from_commit HEAD)
+ echo "$author_script" > "$AUTHOR_SCRIPT"
+ eval "$author_script"
+ output git reset --soft HEAD^
+ pick_one -n $sha1 || die_failed_squash $sha1 "$rest"
+ case "$(peek_next_command)" in
+ squash|s|fixup|f)
+ # This is an intermediate commit; its message will only be
+ # used in case of trouble. So use the long version:
+ do_with_author output git commit --no-verify -F "$SQUASH_MSG" ||
+ die_failed_squash $sha1 "$rest"
+ ;;
+ *)
+ # This is the final command of this squash/fixup group
+ if test -f "$FIXUP_MSG"
+ then
+ do_with_author git commit --no-verify -F "$FIXUP_MSG" ||
+ 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 --no-verify -e ||
+ 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
+ printf 'Executing: %s\n' "$rest"
+ # "exec" command doesn't take a sha1 in the todo-list.
+ # => can't just use $sha1 here.
+ git rev-parse --verify HEAD > "$DOTEST"/stopped-sha
+ ${SHELL:-@SHELL_PATH@} -c "$rest" # Actual execution
+ status=$?
+ if test "$status" -ne 0
+ then
+ warn "Execution failed: $rest"
+ warn "You can fix the problem, and then run"
+ warn
+ warn " git rebase --continue"
+ warn
+ exit "$status"
+ fi
+ # Run in subshell because require_clean_work_tree can die.
+ if ! (require_clean_work_tree "rebase")
+ then
+ warn "Commit or stash your changes, and then run"
+ warn
+ warn " git rebase --continue"
+ warn
+ exit 1
+ fi
+ ;;
+ *)
+ warn "Unknown command: $command $sha1 $rest"
+ if git rev-parse --verify -q "$sha1" >/dev/null
+ then
+ die_with_patch $sha1 "Please fix this in the file $TODO."
+ else
+ die "Please fix this in the file $TODO."
+ fi
+ ;;
+ esac
+ test -s "$TODO" && return
+
+ comment_for_reflog finish &&
+ HEADNAME=$(cat "$DOTEST"/head-name) &&
+ OLDHEAD=$(cat "$DOTEST"/head) &&
+ SHORTONTO=$(git rev-parse --short $(cat "$DOTEST"/onto)) &&
+ NEWHEAD=$(git rev-parse HEAD) &&
+ case $HEADNAME in
+ refs/*)
+ message="$GIT_REFLOG_ACTION: $HEADNAME onto $SHORTONTO" &&
+ git update-ref -m "$message" $HEADNAME $NEWHEAD $OLDHEAD &&
+ git symbolic-ref HEAD $HEADNAME
+ ;;
+ esac && {
+ test ! -f "$DOTEST"/verbose ||
+ git diff-tree --stat $(cat "$DOTEST"/head)..HEAD
+ } &&
+ {
+ test -s "$REWRITTEN_LIST" &&
+ git notes copy --for-rewrite=rebase < "$REWRITTEN_LIST" ||
+ true # we don't care if this copying failed
+ } &&
+ if test -x "$GIT_DIR"/hooks/post-rewrite &&
+ test -s "$REWRITTEN_LIST"; then
+ "$GIT_DIR"/hooks/post-rewrite rebase < "$REWRITTEN_LIST"
+ true # we don't care if this hook failed
+ fi &&
+ rm -rf "$DOTEST" &&
+ git gc --auto &&
+ warn "Successfully rebased and updated $HEADNAME."
+
+ exit
+}
+
+do_rest () {
+ while :
+ do
+ do_next
+ done
+}
+
+# skip picking commits whose parents are unchanged
+skip_unnecessary_picks () {
+ fd=3
+ while read -r command rest
+ do
+ # fd=3 means we skip the command
+ case "$fd,$command" in
+ 3,pick|3,p)
+ # pick a commit whose parent is current $ONTO -> skip
+ sha1=${rest%% *}
+ case "$(git rev-parse --verify --quiet "$sha1"^)" in
+ "$ONTO"*)
+ ONTO=$sha1
+ ;;
+ *)
+ fd=1
+ ;;
+ esac
+ ;;
+ 3,#*|3,)
+ # copy comments
+ ;;
+ *)
+ fd=1
+ ;;
+ esac
+ printf '%s\n' "$command${rest:+ }$rest" >&$fd
+ done <"$TODO" >"$TODO.new" 3>>"$DONE" &&
+ mv -f "$TODO".new "$TODO" &&
+ case "$(peek_next_command)" in
+ squash|s|fixup|f)
+ record_in_rewritten "$ONTO"
+ ;;
+ esac ||
+ die "Could not skip unnecessary pick commands"
+}
+
+# check if no other options are set
+is_standalone () {
+ test $# -eq 2 -a "$2" = '--' &&
+ test -z "$ONTO" &&
+ test -z "$PRESERVE_MERGES" &&
+ test -z "$STRATEGY" &&
+ test -z "$VERBOSE"
+}
+
+get_saved_options () {
+ test -d "$REWRITTEN" && PRESERVE_MERGES=t
+ test -f "$DOTEST"/strategy && STRATEGY="$(cat "$DOTEST"/strategy)"
+ test -f "$DOTEST"/verbose && VERBOSE=t
+ test -f "$DOTEST"/rebase-root && REBASE_ROOT=t
+}
+
+# Rearrange the todo list that has both "pick sha1 msg" and
+# "pick sha1 fixup!/squash! msg" appears in it so that the latter
+# comes immediately after the former, and change "pick" to
+# "fixup"/"squash".
+rearrange_squash () {
+ # extract fixup!/squash! lines and resolve any referenced sha1's
+ while read -r pick sha1 message
+ do
+ case "$message" in
+ "squash! "*|"fixup! "*)
+ action="${message%%!*}"
+ rest="${message#*! }"
+ echo "$sha1 $action $rest"
+ # if it's a single word, try to resolve to a full sha1 and
+ # emit a second copy. This allows us to match on both message
+ # and on sha1 prefix
+ if test "${rest#* }" = "$rest"; then
+ fullsha="$(git rev-parse -q --verify "$rest" 2>/dev/null)"
+ if test -n "$fullsha"; then
+ # prefix the action to uniquely identify this line as
+ # intended for full sha1 match
+ echo "$sha1 +$action $fullsha"
+ fi
+ fi
+ esac
+ done >"$1.sq" <"$1"
+ test -s "$1.sq" || return
+
+ used=
+ while read -r pick sha1 message
+ do
+ case " $used" in
+ *" $sha1 "*) continue ;;
+ esac
+ printf '%s\n' "$pick $sha1 $message"
+ used="$used$sha1 "
+ while read -r squash action msg
+ do
+ case " $used" in
+ *" $squash "*) continue ;;
+ esac
+ emit=0
+ case "$action" in
+ +*)
+ action="${action#+}"
+ # full sha1 prefix test
+ case "$msg" in "$sha1"*) emit=1;; esac ;;
+ *)
+ # message prefix test
+ case "$message" in "$msg"*) emit=1;; esac ;;
+ esac
+ if test $emit = 1; then
+ printf '%s\n' "$action $squash $action! $msg"
+ used="$used$squash "
+ fi
+ done <"$1.sq"
+ done >"$1.rearranged" <"$1"
+ cat "$1.rearranged" >"$1"
+ rm -f "$1.sq" "$1.rearranged"
+}
+
+LF='
+'
+parse_onto () {
+ case "$1" in
+ *...*)
+ if left=${1%...*} right=${1#*...} &&
+ onto=$(git merge-base --all ${left:-HEAD} ${right:-HEAD})
+ then
+ case "$onto" in
+ ?*"$LF"?* | '')
+ exit 1 ;;
+ esac
+ echo "$onto"
+ exit 0
+ fi
+ esac
+ git rev-parse --verify "$1^0"
+}
+
+while test $# != 0
+do
+ case "$1" in
+ --no-verify)
+ OK_TO_SKIP_PRE_REBASE=yes
+ ;;
+ --verify)
+ OK_TO_SKIP_PRE_REBASE=
+ ;;
+ --continue)
+ is_standalone "$@" || usage
+ get_saved_options
+ comment_for_reflog continue
+
+ test -d "$DOTEST" || die "No interactive rebase running"
+
+ # Sanity check
+ git rev-parse --verify HEAD >/dev/null ||
+ die "Cannot read HEAD"
+ git update-index --ignore-submodules --refresh &&
+ git diff-files --quiet --ignore-submodules ||
+ die "Working tree is dirty"
+
+ # do we have anything to commit?
+ if git diff-index --cached --quiet --ignore-submodules HEAD --
+ then
+ : Nothing to commit -- skip this
+ else
+ . "$AUTHOR_SCRIPT" ||
+ die "Cannot find the author identity"
+ amend=
+ if test -f "$AMEND"
+ then
+ amend=$(git rev-parse --verify HEAD)
+ test "$amend" = $(cat "$AMEND") ||
+ die "\
+You have uncommitted changes in your working tree. Please, commit them
+first and then run 'git rebase --continue' again."
+ git reset --soft HEAD^ ||
+ die "Cannot rewind the HEAD"
+ fi
+ do_with_author git commit --no-verify -F "$MSG" -e || {
+ test -n "$amend" && git reset --soft $amend
+ die "Could not commit staged changes."
+ }
+ fi
+
+ record_in_rewritten "$(cat "$DOTEST"/stopped-sha)"
+
+ require_clean_work_tree "rebase"
+ do_rest
+ ;;
+ --abort)
+ is_standalone "$@" || usage
+ get_saved_options
+ comment_for_reflog abort
+
+ git rerere clear
+ test -d "$DOTEST" || die "No interactive rebase running"
+
+ HEADNAME=$(cat "$DOTEST"/head-name)
+ HEAD=$(cat "$DOTEST"/head)
+ case $HEADNAME in
+ refs/*)
+ git symbolic-ref HEAD $HEADNAME
+ ;;
+ esac &&
+ output git reset --hard $HEAD &&
+ rm -rf "$DOTEST"
+ exit
+ ;;
+ --skip)
+ is_standalone "$@" || usage
+ get_saved_options
+ comment_for_reflog skip
+
+ git rerere clear
+ test -d "$DOTEST" || die "No interactive rebase running"
+
+ output git reset --hard && do_rest
+ ;;
+ -s)
+ case "$#,$1" in
+ *,*=*)
+ STRATEGY="-s "$(expr "z$1" : 'z-[^=]*=\(.*\)') ;;
+ 1,*)
+ usage ;;
+ *)
+ STRATEGY="-s $2"
+ shift ;;
+ esac
+ ;;
+ -m)
+ # we use merge anyway
+ ;;
+ -v)
+ VERBOSE=t
+ ;;
+ -p)
+ PRESERVE_MERGES=t
+ ;;
+ -i)
+ # yeah, we know
+ ;;
+ --no-ff)
+ NEVER_FF=t
+ ;;
+ --root)
+ REBASE_ROOT=t
+ ;;
+ --autosquash)
+ AUTOSQUASH=t
+ ;;
+ --no-autosquash)
+ AUTOSQUASH=
+ ;;
+ --onto)
+ shift
+ ONTO=$(parse_onto "$1") ||
+ die "Does not point to a valid commit: $1"
+ ;;
+ --)
+ shift
+ test -z "$REBASE_ROOT" -a $# -ge 1 -a $# -le 2 ||
+ test ! -z "$REBASE_ROOT" -a $# -le 1 || usage
+ test -d "$DOTEST" &&
+ die "Interactive rebase already started"
+
+ git var GIT_COMMITTER_IDENT >/dev/null ||
+ die "You need to set your committer info first"
+
+ if test -z "$REBASE_ROOT"
+ then
+ UPSTREAM_ARG="$1"
+ UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base"
+ test -z "$ONTO" && ONTO=$UPSTREAM
+ shift
+ else
+ UPSTREAM=
+ UPSTREAM_ARG=--root
+ test -z "$ONTO" &&
+ die "You must specify --onto when using --root"
+ fi
+ run_pre_rebase_hook "$UPSTREAM_ARG" "$@"
+
+ comment_for_reflog start
+
+ require_clean_work_tree "rebase" "Please commit or stash them."
+
+ if test ! -z "$1"
+ then
+ output git checkout "$1" -- ||
+ die "Could not checkout $1"
+ fi
+
+ HEAD=$(git rev-parse --verify HEAD) || die "No HEAD?"
+ mkdir "$DOTEST" || die "Could not create temporary $DOTEST"
+
+ : > "$DOTEST"/interactive || die "Could not mark as interactive"
+ git symbolic-ref HEAD > "$DOTEST"/head-name 2> /dev/null ||
+ echo "detached HEAD" > "$DOTEST"/head-name
+
+ echo $HEAD > "$DOTEST"/head
+ case "$REBASE_ROOT" in
+ '')
+ rm -f "$DOTEST"/rebase-root ;;
+ *)
+ : >"$DOTEST"/rebase-root ;;
+ esac
+ echo $ONTO > "$DOTEST"/onto
+ test -z "$STRATEGY" || echo "$STRATEGY" > "$DOTEST"/strategy
+ test t = "$VERBOSE" && : > "$DOTEST"/verbose
+ if test t = "$PRESERVE_MERGES"
+ then
+ if test -z "$REBASE_ROOT"
+ then
+ mkdir "$REWRITTEN" &&
+ for c in $(git merge-base --all $HEAD $UPSTREAM)
+ do
+ echo $ONTO > "$REWRITTEN"/$c ||
+ die "Could not init rewritten commits"
+ done
+ else
+ mkdir "$REWRITTEN" &&
+ echo $ONTO > "$REWRITTEN"/root ||
+ die "Could not init rewritten commits"
+ fi
+ # No cherry-pick because our first pass is to determine
+ # parents to rewrite and skipping dropped commits would
+ # prematurely end our probe
+ MERGES_OPTION=
+ first_after_upstream="$(git rev-list --reverse --first-parent $UPSTREAM..$HEAD | head -n 1)"
+ else
+ MERGES_OPTION="--no-merges --cherry-pick"
+ fi
+
+ SHORTHEAD=$(git rev-parse --short $HEAD)
+ SHORTONTO=$(git rev-parse --short $ONTO)
+ if test -z "$REBASE_ROOT"
+ # this is now equivalent to ! -z "$UPSTREAM"
+ then
+ SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
+ REVISIONS=$UPSTREAM...$HEAD
+ SHORTREVISIONS=$SHORTUPSTREAM..$SHORTHEAD
+ else
+ REVISIONS=$ONTO...$HEAD
+ SHORTREVISIONS=$SHORTHEAD
+ fi
+ git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
+ --abbrev=7 --reverse --left-right --topo-order \
+ $REVISIONS | \
+ sed -n "s/^>//p" |
+ while read -r shortsha1 rest
+ do
+ if test t != "$PRESERVE_MERGES"
+ then
+ printf '%s\n' "pick $shortsha1 $rest" >> "$TODO"
+ else
+ sha1=$(git rev-parse $shortsha1)
+ if test -z "$REBASE_ROOT"
+ then
+ preserve=t
+ for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)
+ do
+ if test -f "$REWRITTEN"/$p -a \( $p != $ONTO -o $sha1 = $first_after_upstream \)
+ then
+ preserve=f
+ fi
+ done
+ else
+ preserve=f
+ fi
+ if test f = "$preserve"
+ then
+ touch "$REWRITTEN"/$sha1
+ printf '%s\n' "pick $shortsha1 $rest" >> "$TODO"
+ fi
+ fi
+ done
+
+ # Watch for commits that been dropped by --cherry-pick
+ if test t = "$PRESERVE_MERGES"
+ then
+ mkdir "$DROPPED"
+ # Save all non-cherry-picked changes
+ git rev-list $REVISIONS --left-right --cherry-pick | \
+ sed -n "s/^>//p" > "$DOTEST"/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"/$rev -a "$(sane_grep "$rev" "$DOTEST"/not-cherry-picks)" = ""
+ 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"/$rev
+ short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev)
+ sane_grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO"
+ rm "$REWRITTEN"/$rev
+ fi
+ done
+ fi
+
+ test -s "$TODO" || echo noop >> "$TODO"
+ test -n "$AUTOSQUASH" && rearrange_squash "$TODO"
+ cat >> "$TODO" << EOF
+
+# Rebase $SHORTREVISIONS onto $SHORTONTO
+#
+# Commands:
+# p, pick = use commit
+# r, reword = use commit, but edit the commit message
+# e, edit = use commit, but stop for amending
+# s, squash = use commit, but meld into previous commit
+# f, fixup = like "squash", but discard this commit's log message
+# x, exec = run command (the rest of the line) using shell
+#
+# If you remove a line here THAT COMMIT WILL BE LOST.
+# However, if you remove everything, the rebase will be aborted.
+#
+EOF
+
+ has_action "$TODO" ||
+ die_abort "Nothing to do"
+
+ cp "$TODO" "$TODO".backup
+ git_editor "$TODO" ||
+ die_abort "Could not execute editor"
+
+ has_action "$TODO" ||
+ die_abort "Nothing to do"
+
+ test -d "$REWRITTEN" || test -n "$NEVER_FF" || skip_unnecessary_picks
+
+ output git checkout $ONTO || die_abort "could not detach HEAD"
+ git update-ref ORIG_HEAD $HEAD
+ do_rest
+ ;;
+ esac
+ shift
+done
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