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diff --git a/git-rebase.sh b/git-rebase.sh
index 60c458f201f8f98bb1c6e115c009525659c2ee20..6d3eddbada5e1a5a38e2b909c75909b8e9d5fda8 100755 (executable)
--- a/git-rebase.sh
+++ b/git-rebase.sh
# Copyright (c) 2005 Junio C Hamano.
#
-USAGE='[--interactive | -i] [-v] [--onto <newbase>] <upstream> [<branch>]'
+USAGE='[--interactive | -i] [-v] [--onto <newbase>] [<upstream>|--root] [<branch>]'
LONG_USAGE='git-rebase replaces <branch> with a new branch of the
same name. When the --onto option is provided the new branch starts
out with a HEAD equal to <newbase>, otherwise it is equal to <upstream>
completely automatic. You will have to resolve any such merge failure
and run git rebase --continue. Another option is to bypass the commit
that caused the merge failure with git rebase --skip. To restore the
-original <branch> and remove the .dotest working files, use the command
-git rebase --abort instead.
+original <branch> and remove the .git/rebase-apply working files, use the
+command git rebase --abort instead.
Note that if <branch> is not specified on the command line, the
currently checked out branch is used.
require_work_tree
cd_to_toplevel
+OK_TO_SKIP_PRE_REBASE=
RESOLVEMSG="
When you have resolved this problem run \"git rebase --continue\".
If you would prefer to skip this patch, instead run \"git rebase --skip\".
unset newbase
strategy=recursive
do_merge=
-dotest=$GIT_DIR/.dotest-merge
+dotest="$GIT_DIR"/rebase-merge
prec=4
verbose=
git_am_opt=
+rebase_root=
continue_merge () {
test -n "$prev_head" || die "prev_head must be defined"
fi
cmt=`cat "$dotest/current"`
- if ! git diff-index --quiet HEAD --
+ if ! git diff-index --quiet --ignore-submodules HEAD --
then
if ! git commit --no-verify -C "$cmt"
then
}
is_interactive () {
- test -f "$dotest"/interactive ||
- while :; do case $#,"$1" in 0,|*,-i|*,--interactive) break ;; esac
+ while test $# != 0
+ do
+ case "$1" in
+ -i|--interactive)
+ interactive_rebase=explicit
+ break
+ ;;
+ -p|--preserve-merges)
+ interactive_rebase=implied
+ ;;
+ esac
shift
- done && test -n "$1"
+ done
+
+ if [ "$interactive_rebase" = implied ]; then
+ GIT_EDITOR=:
+ export GIT_EDITOR
+ fi
+
+ test -n "$interactive_rebase" || test -f "$dotest"/interactive
}
+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
+}
+
+test -f "$GIT_DIR"/rebase-apply/applying &&
+ die 'It looks like git-am is in progress. Cannot rebase.'
+
is_interactive "$@" && exec git-rebase--interactive "$@"
+if test $# -eq 0
+then
+ test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply || usage
+ test -d "$dotest" -o -f "$GIT_DIR"/rebase-apply/rebasing &&
+ die 'A rebase is in progress, try --continue, --skip or --abort.'
+ die "No arguments given and $GIT_DIR/rebase-apply already exists."
+fi
+
while test $# != 0
do
case "$1" in
+ --no-verify)
+ OK_TO_SKIP_PRE_REBASE=yes
+ ;;
--continue)
- git diff-files --quiet || {
+ test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply ||
+ die "No rebase in progress?"
+
+ git diff-files --quiet --ignore-submodules || {
echo "You must edit all merge conflicts and then"
echo "mark them as resolved using git add"
exit 1
finish_rb_merge
exit
fi
- head_name=$(cat .dotest/head-name) &&
- onto=$(cat .dotest/onto) &&
- orig_head=$(cat .dotest/orig-head) &&
+ head_name=$(cat "$GIT_DIR"/rebase-apply/head-name) &&
+ onto=$(cat "$GIT_DIR"/rebase-apply/onto) &&
+ orig_head=$(cat "$GIT_DIR"/rebase-apply/orig-head) &&
git am --resolved --3way --resolvemsg="$RESOLVEMSG" &&
move_to_original_branch
exit
;;
--skip)
+ test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply ||
+ die "No rebase in progress?"
+
git reset --hard HEAD || exit $?
if test -d "$dotest"
then
finish_rb_merge
exit
fi
- head_name=$(cat .dotest/head-name) &&
- onto=$(cat .dotest/onto) &&
- orig_head=$(cat .dotest/orig-head) &&
+ head_name=$(cat "$GIT_DIR"/rebase-apply/head-name) &&
+ onto=$(cat "$GIT_DIR"/rebase-apply/onto) &&
+ orig_head=$(cat "$GIT_DIR"/rebase-apply/orig-head) &&
git am -3 --skip --resolvemsg="$RESOLVEMSG" &&
move_to_original_branch
exit
;;
--abort)
+ test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply ||
+ die "No rebase in progress?"
+
git rerere clear
if test -d "$dotest"
then
move_to_original_branch
- elif test -d .dotest
- then
- dotest=.dotest
- move_to_original_branch
else
- die "No rebase in progress?"
+ dotest="$GIT_DIR"/rebase-apply
+ move_to_original_branch
fi
- git reset --hard $(cat $dotest/orig-head)
+ git reset --hard $(cat "$dotest/orig-head")
rm -r "$dotest"
exit
;;
-C*)
git_am_opt="$git_am_opt $1"
;;
+ --root)
+ rebase_root=t
+ ;;
-*)
usage
;;
shift
done
-# Make sure we do not have .dotest
+# Make sure we do not have $GIT_DIR/rebase-apply
if test -z "$do_merge"
then
- if mkdir .dotest
+ if mkdir "$GIT_DIR"/rebase-apply 2>/dev/null
then
- rmdir .dotest
+ rmdir "$GIT_DIR"/rebase-apply
else
echo >&2 '
-It seems that I cannot create a .dotest directory, and I wonder if you
-are in the middle of patch application or another rebase. If that is not
-the case, please rm -fr .dotest and run me again. I am stopping in case
-you still have something valuable there.'
+It seems that I cannot create a rebase-apply directory, and
+I wonder if you are in the middle of patch application or another
+rebase. If that is not the case, please
+ rm -fr '"$GIT_DIR"'/rebase-apply
+and run me again. I am stopping in case you still have something
+valuable there.'
exit 1
fi
else
if test -d "$dotest"
then
- die "previous dotest directory $dotest still exists." \
- 'try git-rebase < --continue | --abort >'
+ die "previous rebase directory $dotest still exists." \
+ 'Try git rebase (--continue | --abort | --skip)'
fi
fi
# The tree must be really really clean.
-git update-index --refresh || exit
-diff=$(git diff-index --cached --name-status -r HEAD --)
+if ! git update-index --ignore-submodules --refresh; then
+ echo >&2 "cannot rebase: you have unstaged changes"
+ exit 1
+fi
+diff=$(git diff-index --cached --name-status -r --ignore-submodules HEAD --)
case "$diff" in
-?*) echo "cannot rebase: your index is not up-to-date"
- echo "$diff"
+?*) echo >&2 "cannot rebase: your index contains uncommitted changes"
+ echo >&2 "$diff"
exit 1
;;
esac
-# The upstream head must be given. Make sure it is valid.
-upstream_name="$1"
-upstream=`git rev-parse --verify "${upstream_name}^0"` ||
- die "invalid upstream $upstream_name"
+if test -z "$rebase_root"
+then
+ # The upstream head must be given. Make sure it is valid.
+ upstream_name="$1"
+ shift
+ upstream=`git rev-parse --verify "${upstream_name}^0"` ||
+ die "invalid upstream $upstream_name"
+ unset root_flag
+ upstream_arg="$upstream_name"
+else
+ test -z "$newbase" && die "--root must be used with --onto"
+ unset upstream_name
+ unset upstream
+ root_flag="--root"
+ upstream_arg="$root_flag"
+fi
# Make sure the branch to rebase onto is valid.
onto_name=${newbase-"$upstream_name"}
onto=$(git rev-parse --verify "${onto_name}^0") || exit
# If a hook exists, give it a chance to interrupt
-if 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
+run_pre_rebase_hook "$upstream_arg" "$@"
-# If the branch to rebase is given, first switch to it.
+# If the branch to rebase is given, that is the branch we will rebase
+# $branch_name -- branch being rebased, or HEAD (already detached)
+# $orig_head -- commit object name of tip of the branch before rebasing
+# $head_name -- refs/heads/<that-branch> or "detached HEAD"
+switch_to=
case "$#" in
-2)
- branch_name="$2"
- git-checkout "$2" || usage
+1)
+ # Is it "rebase other $branchname" or "rebase other $commit"?
+ branch_name="$1"
+ switch_to="$1"
+
+ if git show-ref --verify --quiet -- "refs/heads/$1" &&
+ branch=$(git rev-parse -q --verify "refs/heads/$1")
+ then
+ head_name="refs/heads/$1"
+ elif branch=$(git rev-parse -q --verify "$1")
+ then
+ head_name="detached HEAD"
+ else
+ usage
+ fi
;;
*)
+ # Do not need to switch branches, we are already on it.
if branch_name=`git symbolic-ref -q HEAD`
then
+ head_name=$branch_name
branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'`
else
+ head_name="detached HEAD"
branch_name=HEAD ;# detached
fi
+ branch=$(git rev-parse --verify "${branch_name}^0") || exit
;;
esac
-branch=$(git rev-parse --verify "${branch_name}^0") || exit
+orig_head=$branch
-# Now we are rebasing commits $upstream..$branch on top of $onto
+# Now we are rebasing commits $upstream..$branch (or with --root,
+# everything leading up to $branch) on top of $onto
# Check if we are already based on $onto with linear history,
# but this should be done only when upstream and onto are the same.
mb=$(git merge-base "$onto" "$branch")
if test "$upstream" = "$onto" && test "$mb" = "$onto" &&
# linear history?
- ! git rev-list --parents "$onto".."$branch" | grep " .* " > /dev/null
+ ! (git rev-list --parents "$onto".."$branch" | grep " .* ") > /dev/null
then
+ # Lazily switch to the target branch if needed...
+ test -z "$switch_to" || git checkout "$switch_to"
echo >&2 "Current branch $branch_name is up to date."
exit 0
fi
GIT_PAGER='' git diff --stat --summary "$mb" "$onto"
fi
-# move to a detached HEAD
-orig_head=$(git rev-parse HEAD^0)
-head_name=$(git symbolic-ref HEAD 2> /dev/null)
-case "$head_name" in
-'')
- head_name="detached HEAD"
- ;;
-*)
- git checkout "$orig_head" > /dev/null 2>&1 ||
- die "could not detach HEAD"
- ;;
-esac
-
-# Rewind the head to "$onto"; this saves our current head in ORIG_HEAD.
+# Detach HEAD and reset the tree
echo "First, rewinding head to replay your work on top of it..."
-git-reset --hard "$onto"
+git checkout -q "$onto^0" || die "could not detach HEAD"
+git update-ref ORIG_HEAD $branch
# If the $onto is a proper descendant of the tip of the branch, then
# we just fast forwarded.
exit 0
fi
+if test -n "$rebase_root"
+then
+ revisions="$onto..$orig_head"
+else
+ revisions="$upstream..$orig_head"
+fi
+
if test -z "$do_merge"
then
- git format-patch -k --stdout --full-index --ignore-if-in-upstream "$upstream"..ORIG_HEAD |
+ git format-patch -k --stdout --full-index --ignore-if-in-upstream \
+ $root_flag "$revisions" |
git am $git_am_opt --rebasing --resolvemsg="$RESOLVEMSG" &&
move_to_original_branch
ret=$?
- test 0 != $ret -a -d .dotest &&
- echo $head_name > .dotest/head-name &&
- echo $onto > .dotest/onto &&
- echo $orig_head > .dotest/orig-head
+ test 0 != $ret -a -d "$GIT_DIR"/rebase-apply &&
+ echo $head_name > "$GIT_DIR"/rebase-apply/head-name &&
+ echo $onto > "$GIT_DIR"/rebase-apply/onto &&
+ echo $orig_head > "$GIT_DIR"/rebase-apply/orig-head
exit $ret
fi
echo "$head_name" > "$dotest/head-name"
msgnum=0
-for cmt in `git rev-list --reverse --no-merges "$upstream"..ORIG_HEAD`
+for cmt in `git rev-list --reverse --no-merges "$revisions"`
do
msgnum=$(($msgnum + 1))
echo "$cmt" > "$dotest/cmt.$msgnum"