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git-checkout: do not warn detaching HEAD when it is already detached.

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Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2007-01-08 02:19:38 -08:00
parent c847f53712
commit 648861040f
1 changed files with 8 additions and 3 deletions
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9
git-checkout.sh
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@ -6,6 +6,7 @@ SUBDIRECTORY_OK=Sometimes
old_name=HEAD
old=$(git-rev-parse --verify $old_name 2>/dev/null)
oldbranch=$(git-symbolic-ref $old_name 2>/dev/null)
new=
new_name=
force=
@ -149,14 +150,18 @@ then
# NEEDSWORK: we would want to have this command here
# that allows us to detach the HEAD atomically.
# git update-ref --detach HEAD "$new"
rm -f "$GIT_DIR/HEAD"
echo "$new" >"$GIT_DIR/HEAD"
echo "$new" >"$GIT_DIR/HEAD.new" &&
mv "$GIT_DIR/HEAD.new" "$GIT_DIR/HEAD" || die "Cannot detach HEAD"
if test -n "$oldbranch"
then
echo >&2 "WARNING: you are not on ANY branch anymore.
If you meant to create a new branch from the commit, you need -b to
associate a new branch with the wanted checkout. Example:
git checkout -b <new_branch_name> $arg
"
fi
fi
if [ "X$old" = X ]
then