git/git-rebase--interactive.sh
Johannes Schindelin 18633e1a22 rebase -i: use the rebase--helper builtin
Now that the sequencer learned to process a "normal" interactive rebase,
we use it. The original shell script is still used for "non-normal"
interactive rebases, i.e. when --root or --preserve-merges was passed.

Please note that the --root option (via the $squash_onto variable) needs
special handling only for the very first command, hence it is still okay
to use the helper upon continue/skip.

Also please note that the --no-ff setting is volatile, i.e. when the
interactive rebase is interrupted at any stage, there is no record of
it. Therefore, we have to pass it from the shell script to the
rebase--helper.

Note: the test t3404 had to be adjusted because the the error messages
produced by the sequencer comply with our current convention to start with
a lower-case letter.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-02-09 14:55:40 -08:00

1335 lines
35 KiB
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# This shell script fragment is sourced by git-rebase to implement
# its interactive mode. "git rebase --interactive" makes it easy
# to fix up commits in the middle of a series and rearrange commits.
#
# Copyright (c) 2006 Johannes E. Schindelin
#
# The original idea comes from Eric W. Biederman, in
# http://article.gmane.org/gmane.comp.version-control.git/22407
#
# 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 $done.
todo="$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
comment_char=$(git config --get core.commentchar 2>/dev/null)
case "$comment_char" in
'' | auto)
comment_char="#"
;;
?)
;;
*)
comment_char=$(echo "$comment_char" | cut -c1)
;;
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="$GIT_REFLOG_ACTION"
comment_for_reflog () {
case "$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 "$todo"
new_count=$(( $(git stripspace --strip-comments <"$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 "$done"
}
append_todo_help () {
gettext "
Commands:
p, pick = use commit
r, reword = use commit, but edit the commit message
e, edit = use commit, but stop for amending
s, squash = use commit, but meld into previous commit
f, fixup = like \"squash\", but discard this commit's log message
x, exec = run command (the rest of the line) using shell
d, drop = remove commit
These lines can be re-ordered; they are executed from top to bottom.
" | git stripspace --comment-lines >>"$todo"
if test $(get_missing_commit_check_level) = error
then
gettext "
Do not remove any line. Use 'drop' explicitly to remove a commit.
" | git stripspace --comment-lines >>"$todo"
else
gettext "
If you remove a line here THAT COMMIT WILL BE LOST.
" | git stripspace --comment-lines >>"$todo"
fi
}
make_patch () {
sha1_and_parents="$(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
make_patch "$1"
die "$2"
}
exit_with_patch () {
echo "$1" > "$state_dir"/stopped-sha
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"
die "$1"
}
has_action () {
test -n "$(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 "$GIT_SEQUENCE_EDITOR"
then
GIT_SEQUENCE_EDITOR="$(git config sequence.editor)"
if [ -z "$GIT_SEQUENCE_EDITOR" ]
then
GIT_SEQUENCE_EDITOR="$(git var GIT_EDITOR)" || return $?
fi
fi
eval "$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 \
${gpg_sign_opt:+$(git rev-parse --sq-quote "$gpg_sign_opt")} \
"$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
then
if 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
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 ${gpg_sign_opt:+"$gpg_sign_opt"} \
$merge_args $strategy_args -m "$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 \
${gpg_sign_opt:+$(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 &&
pick_one -n $sha1 &&
git commit --allow-empty --allow-empty-message \
--amend --no-post-rewrite -n -q -C $sha1 \
${gpg_sign_opt:+"$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"} || {
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"} ||
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"} ||
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"} ||
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 "$(eval_gettext "Successfully rebased and updated \$head_name.")"
return 1 # not failure; just to break the do_rest loop
}
# can only return 0, when the infinite loop breaks
do_rest () {
while :
do
do_next || break
done
}
# skip picking commits whose parents are unchanged
skip_unnecessary_picks () {
fd=3
while read -r command rest
do
# fd=3 means we skip the command
case "$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,"$comment_char"*|3,)
# copy comments
;;
*)
fd=1
;;
esac
printf '%s\n' "$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 "$(gettext "Could not skip unnecessary pick commands")"
}
transform_todo_ids () {
while read -r command rest
do
case "$command" in
"$comment_char"* | exec)
# Be careful for oddball commands like 'exec'
# that do not have a SHA-1 at the beginning of $rest.
;;
*)
sha1=$(git rev-parse --verify --quiet "$@" ${rest%%[ ]*}) &&
rest="$sha1 ${rest#*[ ]}"
;;
esac
printf '%s\n' "$command${rest:+ }$rest"
done <"$todo" >"$todo.new" &&
mv -f "$todo.new" "$todo"
}
expand_todo_ids() {
transform_todo_ids
}
collapse_todo_ids() {
transform_todo_ids --short
}
# 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".
#
# Note that if the config has specified a custom instruction format
# each log message will be re-retrieved in order to normalize the
# autosquash arrangement
rearrange_squash () {
# extract fixup!/squash! lines and resolve any referenced sha1's
while read -r pick sha1 message
do
test -z "${format}" || message=$(git log -n 1 --format="%s" ${sha1})
case "$message" in
"squash! "*|"fixup! "*)
action="${message%%!*}"
rest=$message
prefix=
# skip all squash! or fixup! (but save for later)
while :
do
case "$rest" in
"squash! "*|"fixup! "*)
prefix="$prefix${rest%%!*},"
rest="${rest#*! }"
;;
*)
break
;;
esac
done
printf '%s %s %s %s\n' "$sha1" "$action" "$prefix" "$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 $prefix $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 $message"
test -z "${format}" || message=$(git log -n 1 --format="%s" ${sha1})
used="$used$sha1 "
while read -r squash action msg_prefix msg_content
do
case " $used" in
*" $squash "*) continue ;;
esac
emit=0
case "$action" in
+*)
action="${action#+}"
# full sha1 prefix test
case "$msg_content" in "$sha1"*) emit=1;; esac ;;
*)
# message prefix test
case "$message" in "$msg_content"*) emit=1;; esac ;;
esac
if test $emit = 1; then
if test -n "${format}"
then
msg_content=$(git log -n 1 --format="${format}" ${squash})
else
msg_content="$(echo "$msg_prefix" | sed "s/,/! /g")$msg_content"
fi
printf '%s\n' "$action $squash $msg_content"
used="$used$squash "
fi
done <"$1.sq"
done >"$1.rearranged" <"$1"
cat "$1.rearranged" >"$1"
rm -f "$1.sq" "$1.rearranged"
}
# Add commands after a pick or after a squash/fixup serie
# in the todo list.
add_exec_commands () {
{
first=t
while read -r insn rest
do
case $insn in
pick)
test -n "$first" ||
printf "%s" "$cmd"
;;
esac
printf "%s %s\n" "$insn" "$rest"
first=
done
printf "%s" "$cmd"
} <"$1" >"$1.new" &&
mv "$1.new" "$1"
}
# Check if the SHA-1 passed as an argument is a
# correct one, if not then print $2 in "$todo".badsha
# $1: the SHA-1 to test
# $2: the line number of the input
# $3: the input filename
check_commit_sha () {
badsha=0
if test -z "$1"
then
badsha=1
else
sha1_verif="$(git rev-parse --verify --quiet $1^{commit})"
if test -z "$sha1_verif"
then
badsha=1
fi
fi
if test $badsha -ne 0
then
line="$(sed -n -e "${2}p" "$3")"
warn "$(eval_gettext "\
Warning: the SHA-1 is missing or isn't a commit in the following line:
- \$line")"
warn
fi
return $badsha
}
# prints the bad commits and bad commands
# from the todolist in stdin
check_bad_cmd_and_sha () {
retval=0
lineno=0
while read -r command rest
do
lineno=$(( $lineno + 1 ))
case $command in
"$comment_char"*|''|noop|x|exec)
# Doesn't expect a SHA-1
;;
"$cr")
# Work around CR left by "read" (e.g. with Git for
# Windows' Bash).
;;
pick|p|drop|d|reword|r|edit|e|squash|s|fixup|f)
if ! check_commit_sha "${rest%%[ ]*}" "$lineno" "$1"
then
retval=1
fi
;;
*)
line="$(sed -n -e "${lineno}p" "$1")"
warn "$(eval_gettext "\
Warning: the command isn't recognized in the following line:
- \$line")"
warn
retval=1
;;
esac
done <"$1"
return $retval
}
# Print the list of the SHA-1 of the commits
# from stdin to stdout
todo_list_to_sha_list () {
git stripspace --strip-comments |
while read -r command sha1 rest
do
case $command in
"$comment_char"*|''|noop|x|"exec")
;;
*)
long_sha=$(git rev-list --no-walk "$sha1" 2>/dev/null)
printf "%s\n" "$long_sha"
;;
esac
done
}
# Use warn for each line in stdin
warn_lines () {
while read -r line
do
warn " - $line"
done
}
# Switch to the branch in $into and notify it in the reflog
checkout_onto () {
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name"
output git checkout $onto || die_abort "$(gettext "could not detach HEAD")"
git update-ref ORIG_HEAD $orig_head
}
get_missing_commit_check_level () {
check_level=$(git config --get rebase.missingCommitsCheck)
check_level=${check_level:-ignore}
# Don't be case sensitive
printf '%s' "$check_level" | tr 'A-Z' 'a-z'
}
# Check if the user dropped some commits by mistake
# Behaviour determined by rebase.missingCommitsCheck.
# Check if there is an unrecognized command or a
# bad SHA-1 in a command.
check_todo_list () {
raise_error=f
check_level=$(get_missing_commit_check_level)
case "$check_level" in
warn|error)
# Get the SHA-1 of the commits
todo_list_to_sha_list <"$todo".backup >"$todo".oldsha1
todo_list_to_sha_list <"$todo" >"$todo".newsha1
# Sort the SHA-1 and compare them
sort -u "$todo".oldsha1 >"$todo".oldsha1+
mv "$todo".oldsha1+ "$todo".oldsha1
sort -u "$todo".newsha1 >"$todo".newsha1+
mv "$todo".newsha1+ "$todo".newsha1
comm -2 -3 "$todo".oldsha1 "$todo".newsha1 >"$todo".miss
# Warn about missing commits
if test -s "$todo".miss
then
test "$check_level" = error && raise_error=t
warn "$(gettext "\
Warning: some commits may have been dropped accidentally.
Dropped commits (newer to older):")"
# Make the list user-friendly and display
opt="--no-walk=sorted --format=oneline --abbrev-commit --stdin"
git rev-list $opt <"$todo".miss | warn_lines
warn "$(gettext "\
To avoid this message, use \"drop\" to explicitly remove a commit.
Use 'git config rebase.missingCommitsCheck' to change the level of warnings.
The possible behaviours are: ignore, warn, error.")"
warn
fi
;;
ignore)
;;
*)
warn "$(eval_gettext "Unrecognized setting \$check_level for option rebase.missingCommitsCheck. Ignoring.")"
;;
esac
if ! check_bad_cmd_and_sha "$todo"
then
raise_error=t
fi
if test $raise_error = t
then
# Checkout before the first commit of the
# rebase: this way git rebase --continue
# will work correctly as it expects HEAD to be
# placed before the commit of the next action
checkout_onto
warn "$(gettext "You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'.")"
die "$(gettext "Or you can abort the rebase with 'git rebase --abort'.")"
fi
}
# The whole contents of this file is run by dot-sourcing it from
# inside a shell function. It used to be that "return"s we see
# below were not inside any function, and expected to return
# to the function that dot-sourced us.
#
# However, older (9.x) versions of FreeBSD /bin/sh misbehave on such a
# construct and continue to run the statements that follow such a "return".
# As a work-around, we introduce an extra layer of a function
# here, and immediately call it after defining it.
git_rebase__interactive () {
case "$action" in
continue)
if test ! -d "$rewritten"
then
exec git rebase--helper ${force_rebase:+--no-ff} --continue
fi
# do we have anything to commit?
if git diff-index --cached --quiet HEAD --
then
# Nothing to commit -- skip this commit
test ! -f "$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"} ||
die "$(gettext "Could not commit staged changes.")"
else
do_with_author git commit --no-verify -F "$msg" -e \
${gpg_sign_opt:+"$gpg_sign_opt"} ||
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
;;
skip)
git rerere clear
if test ! -d "$rewritten"
then
exec git rebase--helper ${force_rebase:+--no-ff} --continue
fi
do_rest
return 0
;;
edit-todo)
git stripspace --strip-comments <"$todo" >"$todo".new
mv -f "$todo".new "$todo"
collapse_todo_ids
append_todo_help
gettext "
You are editing the todo file of an ongoing interactive rebase.
To continue rebase after editing, run:
git rebase --continue
" | git stripspace --comment-lines >>"$todo"
git_sequence_editor "$todo" ||
die "$(gettext "Could not execute editor")"
expand_todo_ids
exit
;;
esac
comment_for_reflog start
if test ! -z "$switch_to"
then
GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to"
output git checkout "$switch_to" -- ||
die "$(eval_gettext "Could not checkout \$switch_to")"
comment_for_reflog start
fi
orig_head=$(git rev-parse --verify HEAD) || die "$(gettext "No HEAD?")"
mkdir -p "$state_dir" || die "$(eval_gettext "Could not create temporary \$state_dir")"
: > "$state_dir"/interactive || die "$(gettext "Could not mark as interactive")"
write_basic_state
if test t = "$preserve_merges"
then
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 "$(gettext "Could not init rewritten commits")"
fi
# No cherry-pick because our first pass is to determine
# parents to rewrite and skipping dropped commits would
# prematurely end our probe
merges_option=
else
merges_option="--no-merges --cherry-pick"
fi
shorthead=$(git rev-parse --short $orig_head)
shortonto=$(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...$orig_head
shortrevisions=$shortupstream..$shorthead
else
revisions=$onto...$orig_head
shortrevisions=$shorthead
fi
format=$(git config --get rebase.instructionFormat)
# the 'rev-list .. | sed' requires %m to parse; the instruction requires %H to parse
git rev-list $merges_option --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 t != "$preserve_merges"
then
printf '%s\n' "${comment_out}pick $sha1 $rest" >>"$todo"
else
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
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 $revisions --left-right --cherry-pick | \
sed -n "s/^>//p" > "$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"/$rev
fi
done
fi
test -s "$todo" || echo noop >> "$todo"
test -n "$autosquash" && rearrange_squash "$todo"
test -n "$cmd" && add_exec_commands "$todo"
todocount=$(git stripspace --strip-comments <"$todo" | wc -l)
todocount=${todocount##* }
cat >>"$todo" <<EOF
$comment_char $(eval_ngettext \
"Rebase \$shortrevisions onto \$shortonto (\$todocount command)" \
"Rebase \$shortrevisions onto \$shortonto (\$todocount commands)" \
"$todocount")
EOF
append_todo_help
gettext "
However, if you remove everything, the rebase will be aborted.
" | git stripspace --comment-lines >>"$todo"
if test -z "$keep_empty"
then
printf '%s\n' "$comment_char $(gettext "Note that empty commits are commented out")" >>"$todo"
fi
has_action "$todo" ||
return 2
cp "$todo" "$todo".backup
collapse_todo_ids
git_sequence_editor "$todo" ||
die_abort "$(gettext "Could not execute editor")"
has_action "$todo" ||
return 2
check_todo_list
expand_todo_ids
test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks
checkout_onto
if test -z "$rebase_root" && test ! -d "$rewritten"
then
require_clean_work_tree "rebase"
exec git rebase--helper ${force_rebase:+--no-ff} --continue
fi
do_rest
}
# ... and then we call the whole thing.
git_rebase__interactive