From eb777612f085fc42afd0ac6986ed8062f8b75cbd Mon Sep 17 00:00:00 2001
From: Junio C Hamano <junkio@cox.net>
Date: Fri, 11 Nov 2005 11:12:50 -0800
Subject: [PATCH] git-branch: -f to forcibly reset branch head.
A new usage, 'git-branch -f branch [start]', resets the branch head at
start (or current head). Should be considered a dangerous operation,
but if you are like me to keep rewinding branches it is handy.
Signed-off-by: Junio C Hamano <junkio@cox.net>
---
git-branch.sh | 25 ++++++++++++++++++-------
1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/git-branch.sh b/git-branch.sh
index 11d52fd78e..2594518e9f 100755
--- a/git-branch.sh
+++ b/git-branch.sh
@@ -3,7 +3,7 @@
. git-sh-setup || die "Not a git archive"
usage () {
- echo >&2 "usage: $(basename $0)"' [-d <branch>] | [<branch> [start-point]]
+ echo >&2 "usage: $(basename $0)"' [-d <branch>] | [[-f] <branch> [start-point]]
If no arguments, show available branches and mark current branch with a star.
If one argument, create a new branch <branchname> based off of current HEAD.
@@ -12,11 +12,12 @@ If two arguments, create a new branch <branchname> based off of <start-point>.
exit 1
}
+headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
+ sed -e 's|^refs/heads/||')
+
delete_branch () {
option="$1"
shift
- headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
- sed -e 's|^refs/heads/||')
for branch_name
do
case ",$headref," in
@@ -52,6 +53,7 @@ delete_branch () {
exit 0
}
+force=
while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
do
case "$1" in
@@ -59,6 +61,9 @@ do
delete_branch "$@"
exit
;;
+ -f)
+ force="$1"
+ ;;
--)
shift
break
@@ -72,8 +77,6 @@ done
case "$#" in
0)
- headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
- sed -e 's|^refs/heads/||')
git-rev-parse --symbolic --all |
sed -ne 's|^refs/heads/||p' |
sort |
@@ -97,10 +100,18 @@ branchname="$1"
rev=$(git-rev-parse --verify "$head") || exit
-[ -e "$GIT_DIR/refs/heads/$branchname" ] &&
- die "$branchname already exists."
git-check-ref-format "heads/$branchname" ||
die "we do not like '$branchname' as a branch name."
+if [ -e "$GIT_DIR/refs/heads/$branchname" ]
+then
+ if test '' = "$force"
+ then
+ die "$branchname already exists."
+ elif test "$branchname" = "$headref"
+ then
+ die "cannot force-update the current branch."
+ fi
+fi
git update-ref "refs/heads/$branchname" $rev