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setup: introduce GIT_DEFAULT_REF_FORMAT envvar 

Introduce a new GIT_DEFAULT_REF_FORMAT environment variable that lets
users control the default ref format used by both git-init(1) and
git-clone(1). This is modeled after GIT_DEFAULT_OBJECT_FORMAT, which
does the same thing for the repository's object format.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt 2023-12-29 08:26:52 +01:00 committed by Junio C Hamano
parent d7497a42b0
commit aa19619a98
3 changed files with 30 additions and 0 deletions
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5
Documentation/git.txt
View File

@ -556,6 +556,11 @@ double-quotes and respecting backslash escapes. E.g., the value
is always used. The default is "sha1".
See `--object-format` in linkgit:git-init[1].
`GIT_DEFAULT_REF_FORMAT`::
If this variable is set, the default reference backend format for new
repositories will be set to this value. The default is "files".
See `--ref-format` in linkgit:git-init[1].
Git Commits
~~~~~~~~~~~
`GIT_AUTHOR_NAME`::

7
setup.c
View File

@ -2164,12 +2164,19 @@ static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash
static void validate_ref_storage_format(struct repository_format *repo_fmt,
unsigned int format)
{
const char *name = getenv("GIT_DEFAULT_REF_FORMAT");
if (repo_fmt->version >= 0 &&
format != REF_STORAGE_FORMAT_UNKNOWN &&
format != repo_fmt->ref_storage_format) {
die(_("attempt to reinitialize repository with different reference storage format"));
} else if (format != REF_STORAGE_FORMAT_UNKNOWN) {
repo_fmt->ref_storage_format = format;
} else if (name) {
format = ref_storage_format_by_name(name);
if (format == REF_STORAGE_FORMAT_UNKNOWN)
die(_("unknown ref storage format '%s'"), name);
repo_fmt->ref_storage_format = format;
}
}

18
t/t0001-init.sh
View File

@ -558,6 +558,24 @@ test_expect_success DEFAULT_REPO_FORMAT 'extensions.refStorage with unknown back
grep "invalid value for ${SQ}extensions.refstorage${SQ}: ${SQ}garbage${SQ}" err
'
test_expect_success DEFAULT_REPO_FORMAT 'init with GIT_DEFAULT_REF_FORMAT=files' '
test_when_finished "rm -rf refformat" &&
GIT_DEFAULT_REF_FORMAT=files git init refformat &&
echo 0 >expect &&
git -C refformat config core.repositoryformatversion >actual &&
test_cmp expect actual &&
test_must_fail git -C refformat config extensions.refstorage
'
test_expect_success 'init with GIT_DEFAULT_REF_FORMAT=garbage' '
test_when_finished "rm -rf refformat" &&
cat >expect <<-EOF &&
fatal: unknown ref storage format ${SQ}garbage${SQ}
EOF
test_must_fail env GIT_DEFAULT_REF_FORMAT=garbage git init refformat 2>err &&
test_cmp expect err
'
test_expect_success MINGW 'core.hidedotfiles = false' '
git config --global core.hidedotfiles false &&
rm -rf newdir &&