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pull: allow "git pull origin $something:$current_branch" into an unborn branch

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Some misguided documents floating on the Net suggest this sequence:

    mkdir newdir && cd newdir
    git init
    git remote add origin $url
    git pull origin master:master

"git pull" has known about misguided "pull" that lets the underlying fetch
update the current branch for a long time.  It also has known about
"git pull origin master" into a branch yet to be born.

These two workarounds however were not aware of the existence of each
other and did not work well together.  This fixes it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2008-10-14 15:32:20 -07:00
parent 8ee5d73137
commit b0ad11ea16
2 changed files with 14 additions and 2 deletions
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4
git-pull.sh
View File

@ -124,7 +124,7 @@ orig_head=$(git rev-parse --verify HEAD 2>/dev/null)
git fetch --update-head-ok "$@" || exit 1
curr_head=$(git rev-parse --verify HEAD 2>/dev/null)
if test "$curr_head" != "$orig_head"
if test -n "$orig_head" && test "$curr_head" != "$orig_head"
then
# The fetch involved updating the current branch.
@ -172,7 +172,7 @@ esac
if test -z "$orig_head"
then
git update-ref -m "initial pull" HEAD $merge_head "" &&
git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
git read-tree --reset -u HEAD || exit 1
exit
fi

12
t/t5520-pull.sh
View File

@ -29,6 +29,18 @@ test_expect_success 'checking the results' '
diff file cloned/file
'
test_expect_success 'pulling into void using master:master' '
mkdir cloned-uho &&
(
cd cloned-uho &&
git init &&
git pull .. master:master
) &&
test -f file &&
test -f cloned-uho/file &&
test_cmp file cloned-uho/file
'
test_expect_success 'test . as a remote' '
git branch copy master &&