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submodule add: extend force flag to add existing repos 

Currently the force flag in `git submodule add` takes care of possibly
ignored files or when a name collision occurs.

However there is another situation where submodule add comes in handy:
When you already have a gitlink recorded, but no configuration was
done (i.e. no .gitmodules file nor any entry in .git/config) and you
want to generate these config entries. For this situation allow
`git submodule add` to proceed if there is already a submodule at the
given path in the index.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Stefan Beller 2016-10-06 12:37:24 -07:00 committed by Junio C Hamano
parent 250ab24ab3
commit 619acfc78c
2 changed files with 22 additions and 2 deletions
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10
git-submodule.sh
View File

@ -207,8 +207,14 @@ cmd_add()
tstart
s|/*$||
')
git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
die "$(eval_gettext "'\$sm_path' already exists in the index")"
if test -z "$force"
then
git ls-files --error-unmatch "$sm_path" > /dev/null 2>&1 &&
die "$(eval_gettext "'\$sm_path' already exists in the index")"
else
git ls-files -s "$sm_path" | sane_grep -v "^160000" > /dev/null 2>&1 &&
die "$(eval_gettext "'\$sm_path' already exists in the index and is not a submodule")"
fi
if test -z "$force" && ! git add --dry-run --ignore-missing "$sm_path" > /dev/null 2>&1
then

14
t/t7400-submodule-basic.sh
View File

@ -152,6 +152,20 @@ test_expect_success 'submodule add to .gitignored path with --force' '
)
'
test_expect_success 'submodule add to reconfigure existing submodule with --force' '
(
cd addtest-ignore &&
git submodule add --force bogus-url submod &&
git submodule add -b initial "$submodurl" submod-branch &&
test "bogus-url" = "$(git config -f .gitmodules submodule.submod.url)" &&
test "bogus-url" = "$(git config submodule.submod.url)" &&
# Restore the url
git submodule add --force "$submodurl" submod
test "$submodurl" = "$(git config -f .gitmodules submodule.submod.url)" &&
test "$submodurl" = "$(git config submodule.submod.url)"
)
'
test_expect_success 'submodule add --branch' '
echo "refs/heads/initial" >expect-head &&
cat <<-\EOF >expect-heads &&