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:
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
"
# 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="$DOTEST"/rewritten-pending
+
PRESERVE_MERGES=
STRATEGY=
ONTO=
OK_TO_SKIP_PRE_REBASE=
REBASE_ROOT=
AUTOSQUASH=
+test "$(git config --bool rebase.autosquash)" = "true" && AUTOSQUASH=t
+NEVER_FF=
-GIT_CHERRY_PICK_HELP=" After resolving the conflicts,
-mark the corrected paths with 'git add <paths>', and
-run 'git rebase --continue'"
+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 () {
- echo "$*" >&2
+ printf '%s\n' "$*" >&2
}
output () {
fi
}
-require_clean_work_tree () {
- # test if working tree is dirty
- git rev-parse --verify HEAD > /dev/null &&
- git update-index --ignore-submodules --refresh &&
- git diff-files --quiet --ignore-submodules &&
- git diff-index --cached --quiet HEAD --ignore-submodules -- ||
- die "Working tree is dirty"
-}
ORIG_REFLOG_ACTION="$GIT_REFLOG_ACTION"
}
die_with_patch () {
+ echo "$1" > "$DOTEST"/stopped-sha
make_patch "$1"
git rerere
die "$2"
}
pick_one () {
- no_ff=
- case "$1" in -n) sha1=$2; no_ff=t ;; *) sha1=$1 ;; esac
+ 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 "$@" && return
output git cherry-pick "$@"
return
fi
- 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 "$no_ff" && test "$current_sha1" = "$parent_sha1"
- then
- output git reset --hard $sha1
- output warn Fast-forward to $(git rev-parse --short $sha1)
- else
- output git cherry-pick "$@"
- fi
+ output git cherry-pick $ff "$@"
}
pick_one_preserving_merges () {
then
if test "$fast_forward" = t
then
- cat "$DOTEST"/current-commit | while read current_commit
+ while read current_commit
do
git rev-parse HEAD > "$REWRITTEN"/$current_commit
- done
+ done <"$DOTEST"/current-commit
rm "$DOTEST"/current-commit ||
die "Cannot write current commit's replacement sha1"
fi
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 $1 ""
}
+flush_rewritten_pending() {
+ test -s "$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" "$AMEND" || exit
- read command sha1 rest < "$TODO"
+ read -r command sha1 rest < "$TODO"
case "$command" in
'#'*|''|noop)
mark_action_done
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
+ 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... $rest"
rm -f "$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 $rest"
test ! -f "$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 $HEADNAME."
# skip picking commits whose parents are unchanged
skip_unnecessary_picks () {
fd=3
- while read command sha1 rest
+ while read -r command rest
do
# fd=3 means we skip the command
- case "$fd,$command,$(git rev-parse --verify --quiet $sha1^)" in
- 3,pick,"$ONTO"*|3,p,"$ONTO"*)
+ case "$fd,$command" in
+ 3,pick|3,p)
# pick a commit whose parent is current $ONTO -> skip
- ONTO=$sha1
+ sha1=${rest%% *}
+ case "$(git rev-parse --verify --quiet "$sha1"^)" in
+ "$ONTO"*)
+ ONTO=$sha1
+ ;;
+ *)
+ fd=1
+ ;;
+ esac
;;
- 3,#*|3,,*)
+ 3,#*|3,)
# copy comments
;;
*)
fd=1
;;
esac
- echo "$command${sha1:+ }$sha1${rest:+ }$rest" >&$fd
+ printf '%s\n' "$command${rest:+ }$rest" >&$fd
done <"$TODO" >"$TODO.new" 3>>"$DONE" &&
- mv -f "$TODO".new "$TODO" ||
+ 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"
}
# 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" >"$1.sq"
+ # extract fixup!/squash! lines and resolve any referenced sha1's
+ while read -r pick sha1 message
+ do
+ case "$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 pick sha1 message
+ while read -r pick sha1 message
do
case " $used" in
*" $sha1 "*) continue ;;
esac
- echo "$pick $sha1 $message"
- while read squash action msg
+ printf '%s\n' "$pick $sha1 $message"
+ used="$used$sha1 "
+ while read -r squash action msg
do
- case "$message" in
- "$msg"*)
- echo "$action $squash $action! $msg"
- used="$used$squash "
- ;;
+ 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" >"$1"
OK_TO_SKIP_PRE_REBASE=yes
;;
--verify)
+ OK_TO_SKIP_PRE_REBASE=
;;
--continue)
is_standalone "$@" || usage
}
fi
- require_clean_work_tree
+ record_in_rewritten "$(cat "$DOTEST"/stopped-sha)"
+
+ require_clean_work_tree "rebase"
do_rest
;;
--abort)
-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") ||
comment_for_reflog start
- require_clean_work_tree
+ require_clean_work_tree "rebase" "Please commit or stash them."
if test ! -z "$1"
then
- output git show-ref --verify --quiet "refs/heads/$1" ||
- die "Invalid branchname: $1"
- output git checkout "$1" ||
+ output git checkout "$1" -- ||
die "Could not checkout $1"
fi
git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
--abbrev=7 --reverse --left-right --topo-order \
$REVISIONS | \
- sed -n "s/^>//p" | while read shortsha1 rest
+ sed -n "s/^>//p" |
+ while read -r shortsha1 rest
do
if test t != "$PRESERVE_MERGES"
then
- echo "pick $shortsha1 $rest" >> "$TODO"
+ printf '%s\n' "pick $shortsha1 $rest" >> "$TODO"
else
sha1=$(git rev-parse $shortsha1)
if test -z "$REBASE_ROOT"
if test f = "$preserve"
then
touch "$REWRITTEN"/$sha1
- echo "pick $shortsha1 $rest" >> "$TODO"
+ printf '%s\n' "pick $shortsha1 $rest" >> "$TODO"
fi
fi
done
# 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.
has_action "$TODO" ||
die_abort "Nothing to do"
- test -d "$REWRITTEN" || skip_unnecessary_picks
+ 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
- output git checkout $ONTO && do_rest
+ do_rest
;;
esac
shift
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