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index 702c979414033a685973c126042631c4469c3454..3e4fd1456f1ebb4aabb61de6d7f13f820ae2abdc 100755 (executable)
skip skip current patch and continue rebasing process
no-verify override pre-rebase hook from stopping the operation
root rebase all reachable commmits up to the root(s)
+autosquash move commits that begin with squash!/fixup! under -i
"
. git-sh-setup
# 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
VERBOSE=
OK_TO_SKIP_PRE_REBASE=
REBASE_ROOT=
+AUTOSQUASH=
GIT_CHERRY_PICK_HELP=" After resolving the conflicts,
mark the corrected paths with 'git add <paths>', and
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"
;;
esac > "$DOTEST"/patch
test -f "$MSG" ||
- git cat-file commit "$1" | sed "1,/^$/d" > "$MSG"
+ commit_message "$1" > "$MSG"
test -f "$AUTHOR_SCRIPT" ||
get_author_ident_from_commit "$1" > "$AUTHOR_SCRIPT"
}
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 () {
no_ff=
case "$1" in -n) sha1=$2; no_ff=t ;; *) sha1=$1 ;; esac
parent_sha1=$(git rev-parse --verify $sha1^) ||
die "Could not get the parent of $sha1"
current_sha1=$(git rev-parse --verify HEAD)
- if test -z "$no_ff" -a "$current_sha1" = "$parent_sha1"
+ if test -z "$no_ff" && test "$current_sha1" = "$parent_sha1"
then
output git reset --hard $sha1
output warn Fast-forward to $(git rev-parse --short $sha1)
# redo merge
author_script=$(get_author_ident_from_commit $sha1)
eval "$author_script"
- msg="$(git cat-file commit $sha1 | sed -e '1,/^$/d')"
+ msg="$(commit_message $sha1)"
# No point in merging the first parent, that's HEAD
new_parents=${new_parents# $first_parent}
- if ! GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \
- GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \
- GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \
- output git merge $STRATEGY -m "$msg" \
- $new_parents
+ 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 $sha1"
esac
}
-make_squash_message () {
+update_squash_messages () {
if test -f "$SQUASH_MSG"; then
- # We want to be careful about matching only the commit
- # message comment lines generated by this function.
- # "[snrt][tdh]" matches the nth_string endings.
- COUNT=$(($(sed -n "s/^# Th[^0-9]*\([1-9][0-9]*\)[snrt][tdh] commit message.*:/\1/p" \
- < "$SQUASH_MSG" | sed -ne '$p')+1))
- echo "# This is a combination of $COUNT commits."
- sed -e 1d -e '2,/^./{
- /^$/d
- }' <"$SQUASH_MSG"
+ mv "$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 $FIXUP_MSG"
COUNT=2
- echo "# This is a combination of 2 commits."
- echo "# The first commit's message is:"
- echo
- git cat-file commit HEAD | sed -e '1,/^$/d'
+ {
+ 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
- git cat-file commit $2 | sed -e '1,/^$/d'
+ commit_message $2
;;
fixup)
echo
echo "# The $(nth_string $COUNT) commit message will be skipped:"
echo
- # Comment the lines of the commit message out using
- # "# " rather than "# " to make them less likely to
- # confuse the sed regexp above.
- git cat-file commit $2 | sed -e '1,/^$/d' -e 's/^/# /'
+ commit_message $2 | sed -e 's/^/# /'
;;
- esac
+ esac >>"$SQUASH_MSG"
}
peek_next_command () {
- sed -n -e "/^#/d" -e "/^$/d" -e "s/ .*//p" -e "q" < "$TODO"
+ 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 $1 ""
}
do_next () {
die "Cannot '$squash_style' without a previous commit"
mark_action_done
- make_squash_message $squash_style $sha1 > "$MSG"
- failed=f
+ 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 || failed=t
+ pick_one -n $sha1 || die_failed_squash $sha1 "$rest"
case "$(peek_next_command)" in
squash|s|fixup|f)
- USE_OUTPUT=output
- MSG_OPT=-F
- EDIT_OR_FILE="$MSG"
- cp "$MSG" "$SQUASH_MSG"
+ # 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"
;;
*)
- USE_OUTPUT=
- MSG_OPT=
- EDIT_OR_FILE=-e
- rm -f "$SQUASH_MSG" || exit
- cp "$MSG" "$GIT_DIR"/SQUASH_MSG
- rm -f "$GIT_DIR"/MERGE_MSG || exit
+ # 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
- echo "$author_script" > "$AUTHOR_SCRIPT"
- if test $failed = f
- then
- # This is like --amend, but with a different message
- eval "$author_script"
- GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \
- GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \
- GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \
- $USE_OUTPUT git commit --no-verify \
- $MSG_OPT "$EDIT_OR_FILE" || failed=t
- fi
- if test $failed = t
- then
- cp "$MSG" "$GIT_DIR"/MERGE_MSG
- warn
- warn "Could not apply $sha1... $rest"
- die_with_patch $sha1 ""
- fi
;;
*)
warn "Unknown command: $command $sha1 $rest"
test -f "$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 () {
+ sed -n -e 's/^pick \([0-9a-f]*\) \(squash\)! /\1 \2 /p' \
+ -e 's/^pick \([0-9a-f]*\) \(fixup\)! /\1 \2 /p' \
+ "$1" >"$1.sq"
+ test -s "$1.sq" || return
+
+ used=
+ while read pick sha1 message
+ do
+ case " $used" in
+ *" $sha1 "*) continue ;;
+ esac
+ echo "$pick $sha1 $message"
+ while read squash action msg
+ do
+ case "$message" in
+ "$msg"*)
+ echo "$action $squash $action! $msg"
+ used="$used$squash "
+ ;;
+ esac
+ 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 "$1" in
git reset --soft HEAD^ ||
die "Cannot rewind the HEAD"
fi
- export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE &&
- git commit --no-verify -F "$MSG" -e || {
+ do_with_author git commit --no-verify -F "$MSG" -e || {
test -n "$amend" && git reset --soft $amend
die "Could not commit staged changes."
}
--root)
REBASE_ROOT=t
;;
+ --autosquash)
+ AUTOSQUASH=t
+ ;;
--onto)
shift
- ONTO=$(git rev-parse --verify "$1") ||
+ ONTO=$(parse_onto "$1") ||
die "Does not point to a valid commit: $1"
;;
--)
fi
test -s "$TODO" || echo noop >> "$TODO"
+ test -n "$AUTOSQUASH" && rearrange_squash "$TODO"
cat >> "$TODO" << EOF
# Rebase $SHORTREVISIONS onto $SHORTONTO
cp "$TODO" "$TODO".backup
git_editor "$TODO" ||
- die "Could not execute editor"
+ die_abort "Could not execute editor"
has_action "$TODO" ||
die_abort "Nothing to do"