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-rwxr-xr-xgit-rebase--interactive.sh155
1 files changed, 119 insertions, 36 deletions
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 124cb58..8ed2244 100755
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -26,6 +26,7 @@ i,interactive always used (no-op)
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
"
. git-sh-setup
@@ -37,10 +38,12 @@ DONE="$DOTEST"/done
MSG="$DOTEST"/message
SQUASH_MSG="$DOTEST"/message-squash
REWRITTEN="$DOTEST"/rewritten
+DROPPED="$DOTEST"/dropped
PRESERVE_MERGES=
STRATEGY=
ONTO=
VERBOSE=
+OK_TO_SKIP_PRE_REBASE=
GIT_CHERRY_PICK_HELP=" After resolving the conflicts,
mark the corrected paths with 'git add <paths>', and
@@ -66,7 +69,8 @@ output () {
}
run_pre_rebase_hook () {
- if test -x "$GIT_DIR/hooks/pre-rebase"
+ 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."
@@ -111,9 +115,18 @@ mark_action_done () {
}
make_patch () {
- parent_sha1=$(git rev-parse --verify "$1"^) ||
- die "Cannot get patch for $1^"
- git diff-tree -p "$parent_sha1".."$1" > "$DOTEST"/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 "$DOTEST"/message ||
git cat-file commit "$1" | sed "1,/^$/d" > "$DOTEST"/message
test -f "$DOTEST"/author-script ||
@@ -169,21 +182,39 @@ pick_one_preserving_merges () {
if test -f "$DOTEST"/current-commit
then
- current_commit=$(cat "$DOTEST"/current-commit) &&
- git rev-parse HEAD > "$REWRITTEN"/$current_commit &&
- rm "$DOTEST"/current-commit ||
- die "Cannot write current commit's replacement sha1"
+ if test "$fast_forward" = t
+ then
+ cat "$DOTEST"/current-commit | while read current_commit
+ do
+ git rev-parse HEAD > "$REWRITTEN"/$current_commit
+ done
+ rm "$DOTEST"/current-commit ||
+ die "Cannot write current commit's replacement sha1"
+ fi
fi
- echo $sha1 > "$DOTEST"/current-commit
+ echo $sha1 >> "$DOTEST"/current-commit
# rewrite parents; if none were rewritten, we can fast-forward.
new_parents=
- for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)
+ pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)"
+ while [ "$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
*$new_p*)
@@ -193,7 +224,13 @@ pick_one_preserving_merges () {
;;
esac
else
- new_parents="$new_parents $p"
+ if test -f "$DROPPED"/$p
+ then
+ fast_forward=f
+ pend=" $(cat "$DROPPED"/$p)$pend"
+ else
+ new_parents="$new_parents $p"
+ fi
fi
done
case $fast_forward in
@@ -203,15 +240,19 @@ pick_one_preserving_merges () {
die "Cannot fast forward to $sha1"
;;
f)
- test "a$1" = a-n && die "Refusing to squash a merge: $sha1"
-
first_parent=$(expr "$new_parents" : ' \([^ ]*\)')
- # detach HEAD to current parent
- output git checkout $first_parent 2> /dev/null ||
- die "Cannot move HEAD to $first_parent"
+
+ 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"
@@ -224,9 +265,8 @@ pick_one_preserving_merges () {
output git merge $STRATEGY -m "$msg" \
$new_parents
then
- git rerere
printf "%s\n" "$msg" > "$GIT_DIR"/MERGE_MSG
- die Error redoing merge $sha1
+ die_with_patch $sha1 "Error redoing merge $sha1"
fi
;;
*)
@@ -309,7 +349,7 @@ do_next () {
squash|s)
comment_for_reflog squash
- has_action "$DONE" ||
+ test -f "$DONE" && has_action "$DONE" ||
die "Cannot 'squash' without a previous commit"
mark_action_done
@@ -365,20 +405,7 @@ do_next () {
HEADNAME=$(cat "$DOTEST"/head-name) &&
OLDHEAD=$(cat "$DOTEST"/head) &&
SHORTONTO=$(git rev-parse --short $(cat "$DOTEST"/onto)) &&
- if test -d "$REWRITTEN"
- then
- test -f "$DOTEST"/current-commit &&
- current_commit=$(cat "$DOTEST"/current-commit) &&
- git rev-parse HEAD > "$REWRITTEN"/$current_commit
- if test -f "$REWRITTEN"/$OLDHEAD
- then
- NEWHEAD=$(cat "$REWRITTEN"/$OLDHEAD)
- else
- NEWHEAD=$OLDHEAD
- fi
- else
- NEWHEAD=$(git rev-parse HEAD)
- fi &&
+ NEWHEAD=$(git rev-parse HEAD) &&
case $HEADNAME in
refs/*)
message="$GIT_REFLOG_ACTION: $HEADNAME onto $SHORTONTO)" &&
@@ -421,6 +448,11 @@ get_saved_options () {
while test $# != 0
do
case "$1" in
+ --no-verify)
+ OK_TO_SKIP_PRE_REBASE=yes
+ ;;
+ --verify)
+ ;;
--continue)
is_standalone "$@" || usage
get_saved_options
@@ -572,18 +604,69 @@ first and then run 'git rebase --continue' again."
echo $ONTO > "$REWRITTEN"/$c ||
die "Could not init rewritten commits"
done
+ # No cherry-pick because our first pass is to determine
+ # parents to rewrite and skipping dropped commits would
+ # prematurely end our probe
MERGES_OPTION=
+ first_after_upstream="$(git rev-list --reverse --first-parent $UPSTREAM..$HEAD | head -n 1)"
else
- MERGES_OPTION=--no-merges
+ MERGES_OPTION="--no-merges --cherry-pick"
fi
SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM)
SHORTHEAD=$(git rev-parse --short $HEAD)
SHORTONTO=$(git rev-parse --short $ONTO)
git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \
- --abbrev=7 --reverse --left-right --cherry-pick \
+ --abbrev=7 --reverse --left-right --topo-order \
$UPSTREAM...$HEAD | \
- sed -n "s/^>/pick /p" > "$TODO"
+ sed -n "s/^>//p" | while read shortsha1 rest
+ do
+ if test t != "$PRESERVE_MERGES"
+ then
+ echo "pick $shortsha1 $rest" >> "$TODO"
+ else
+ sha1=$(git rev-parse $shortsha1)
+ preserve=t
+ for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-)
+ do
+ if test -f "$REWRITTEN"/$p -a \( $p != $UPSTREAM -o $sha1 = $first_after_upstream \)
+ then
+ preserve=f
+ fi
+ done
+ if test f = "$preserve"
+ then
+ touch "$REWRITTEN"/$sha1
+ echo "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 $UPSTREAM...$HEAD --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 $UPSTREAM..$HEAD |
+ while read rev
+ do
+ if test -f "$REWRITTEN"/$rev -a "$(grep "$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 $rev | cut -d' ' -f2 > "$DROPPED"/$rev
+ short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev)
+ 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 >> "$TODO"
cat >> "$TODO" << EOF