# 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>
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\".
prec=4
verbose=
git_am_opt=
+rebase_root=
continue_merge () {
test -n "$prev_head" || die "prev_head must be defined"
}
is_interactive () {
- test -f "$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 "$1" in
+ --no-verify)
+ OK_TO_SKIP_PRE_REBASE=yes
+ ;;
--continue)
test -d "$dotest" -o -d "$GIT_DIR"/rebase-apply ||
die "No rebase in progress?"
-C*)
git_am_opt="$git_am_opt $1"
;;
+ --root)
+ rebase_root=t
+ ;;
-*)
usage
;;
# Make sure we do not have $GIT_DIR/rebase-apply
if test -z "$do_merge"
then
- if mkdir "$GIT_DIR"/rebase-apply
+ if mkdir "$GIT_DIR"/rebase-apply 2>/dev/null
then
rmdir "$GIT_DIR"/rebase-apply
else
echo >&2 '
-It seems that I cannot create a '"$GIT_DIR"'/rebase-apply directory,
-and I wonder if you are in the middle of patch application or another
+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 '"$GIT_DIR"'/rebase-apply
- and run me again. I am stopping in case you still have something
+and run me again. I am stopping in case you still have something
valuable there.'
exit 1
fi
if test -d "$dotest"
then
die "previous rebase directory $dotest still exists." \
- 'try git-rebase < --continue | --abort >'
+ 'Try git rebase (--continue | --abort | --skip)'
fi
fi
# The tree must be really really clean.
-git update-index --ignore-submodules --refresh || exit
+if ! git update-index --ignore-submodules --refresh; then
+ echo >&2 "cannot rebase: you have unstaged changes"
+ exit 1
+fi
diff=$(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, that is the branch we will rebase
# $branch_name -- branch being rebased, or HEAD (already detached)
# $head_name -- refs/heads/<that-branch> or "detached HEAD"
switch_to=
case "$#" in
-2)
+1)
# Is it "rebase other $branchname" or "rebase other $commit"?
- branch_name="$2"
- switch_to="$2"
+ branch_name="$1"
+ switch_to="$1"
- if git show-ref --verify --quiet -- "refs/heads/$2" &&
- branch=$(git rev-parse --verify "refs/heads/$2" 2>/dev/null)
+ if git show-ref --verify --quiet -- "refs/heads/$1" &&
+ branch=$(git rev-parse -q --verify "refs/heads/$1")
then
- head_name="refs/heads/$2"
- elif branch=$(git rev-parse --verify "$2" 2>/dev/null)
+ head_name="refs/heads/$1"
+ elif branch=$(git rev-parse -q --verify "$1")
then
head_name="detached HEAD"
else
esac
orig_head=$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 $onto with linear history,
# but this should be done only when upstream and onto are the same.
exit 0
fi
+if test -n "$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" |
+ $root_flag "$revisions" |
git am $git_am_opt --rebasing --resolvemsg="$RESOLVEMSG" &&
move_to_original_branch
ret=$?
echo "$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"