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Enable ref log creation in git checkout -b.

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Switch git checkout -b to use git-update-ref rather than echo and
a shell I/O redirection.  This is more in line with typical GIT
commands and allows -b to be logged according to the normal ref
logging rules.

Added -l option to allow users to create the ref log at the same
time as creating a branch.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Shawn Pearce 2006-05-19 05:17:16 -04:00 committed by Junio C Hamano
parent 3a4b3f269c
commit 969d326d6b
2 changed files with 21 additions and 5 deletions
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7
Documentation/git-checkout.txt
View file

@ -8,7 +8,7 @@ git-checkout - Checkout and switch to a branch
SYNOPSIS
--------
[verse]
'git-checkout' [-f] [-b <new_branch>] [-m] [<branch>]
'git-checkout' [-f] [-b <new_branch> [-l]] [-m] [<branch>]
'git-checkout' [-m] [<branch>] <paths>...
DESCRIPTION
@ -37,6 +37,11 @@ OPTIONS
-b::
Create a new branch and start it at <branch>.
-l::
Create the new branch's ref log. This activates recording of
all changes to made the branch ref, enabling use of date
based sha1 expressions such as "<branchname>@{yesterday}".
-m::
If you have local modifications to one or more files that
are different between the current branch and the branch to

19
git-checkout.sh
View file

@ -5,10 +5,13 @@ SUBDIRECTORY_OK=Sometimes
. git-sh-setup
old=$(git-rev-parse HEAD)
old_name=HEAD
new=
new_name=
force=
branch=
newbranch=
newbranch_log=
merge=
while [ "$#" != "0" ]; do
arg="$1"
@ -24,6 +27,9 @@ while [ "$#" != "0" ]; do
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
;;
@ -44,6 +50,7 @@ while [ "$#" != "0" ]; do
exit 1
fi
new="$rev"
new_name="$arg^0"
if [ -f "$GIT_DIR/refs/heads/$arg" ]; then
branch="$arg"
fi
@ -51,9 +58,11 @@ while [ "$#" != "0" ]; do
then
# checking out selected paths from a tree-ish.
new="$rev"
new_name="$arg^{tree}"
branch=
else
new=
new_name=
branch=
set x "$arg" "$@"
shift
@ -114,7 +123,7 @@ then
cd "$cdup"
fi
[ -z "$new" ] && new=$old
[ -z "$new" ] && new=$old && new_name="$old_name"
# If we don't have an old branch that we're switching to,
# and we don't have a new branch name for the target we
@ -187,9 +196,11 @@ fi
#
if [ "$?" -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/$branchname")
touch "$GIT_DIR/logs/refs/heads/$branchname"
fi
git-update-ref -m "checkout: Created from $new_name" "refs/heads/$newbranch" $new || exit
branch="$newbranch"
fi
[ "$branch" ] &&