diff --git a/git-checkout.sh b/git-checkout.sh
index 463ed2eaff906edaeb0f6d3f8138798e373c6495..dd477245fb3703402b950cbc1378b35ce379d631 100755 (executable)
--- a/git-checkout.sh
+++ b/git-checkout.sh
SUBDIRECTORY_OK=Sometimes
. git-sh-setup
-old=$(git-rev-parse HEAD)
+old_name=HEAD
+old=$(git-rev-parse --verify $old_name 2>/dev/null)
new=
+new_name=
force=
branch=
newbranch=
+newbranch_log=
merge=
while [ "$#" != "0" ]; do
arg="$1"
git-check-ref-format "heads/$newbranch" ||
die "git checkout: we do not like '$newbranch' as a branch name."
;;
+ "-l")
+ newbranch_log=1
+ ;;
"-f")
force=1
;;
exit 1
fi
new="$rev"
+ new_name="$arg^0"
if [ -f "$GIT_DIR/refs/heads/$arg" ]; then
branch="$arg"
fi
then
# checking out selected paths from a tree-ish.
new="$rev"
+ new_name="$arg^{tree}"
branch=
else
new=
+ new_name=
branch=
set x "$arg" "$@"
shift
fi
+ case "$1" in
+ --)
+ shift ;;
+ esac
break
;;
esac
cd "$cdup"
fi
-[ -z "$new" ] && new=$old
+[ -z "$new" ] && new=$old && new_name="$old_name"
# If we don't have an old branch that we're switching to,
# and we don't have a new branch name for the target we
die "git checkout: to checkout the requested commit you need to specify
a name for a new branch which is created and switched to"
+if [ "X$old" = X ]
+then
+ echo "warning: You do not appear to currently be on a branch." >&2
+ echo "warning: Forcing checkout of $new_name." >&2
+ force=1
+fi
+
if [ "$force" ]
then
- git-read-tree --reset $new &&
- git-checkout-index -q -f -u -a
+ git-read-tree --reset -u $new
else
git-update-index --refresh >/dev/null
merge_error=$(git-read-tree -m -u $old $new 2>&1) || (
# Match the index to the working tree, and do a three-way.
git diff-files --name-only | git update-index --remove --stdin &&
work=`git write-tree` &&
- git read-tree --reset $new &&
- git checkout-index -f -u -q -a &&
- git read-tree -m -u $old $new $work || exit
+ git read-tree --reset -u $new &&
+ git read-tree -m -u --aggressive $old $new $work || exit
if result=`git write-tree 2>/dev/null`
then
#
if [ "$?" -eq 0 ]; then
if [ "$newbranch" ]; then
- leading=`expr "refs/heads/$newbranch" : '\(.*\)/'` &&
- mkdir -p "$GIT_DIR/$leading" &&
- echo $new >"$GIT_DIR/refs/heads/$newbranch" || exit
+ if [ "$newbranch_log" ]; then
+ mkdir -p $(dirname "$GIT_DIR/logs/refs/heads/$newbranch")
+ touch "$GIT_DIR/logs/refs/heads/$newbranch"
+ fi
+ git-update-ref -m "checkout: Created from $new_name" "refs/heads/$newbranch" $new || exit
branch="$newbranch"
fi
[ "$branch" ] &&