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-rw-r--r--setup.c4
-rwxr-xr-xt/t0001-init.sh9
2 files changed, 12 insertions, 1 deletions
diff --git a/setup.c b/setup.c
index 8a488f3e7c..53ffeabc5b 100644
--- a/setup.c
+++ b/setup.c
@@ -2534,7 +2534,9 @@ static void repository_format_configure(struct repository_format *repo_fmt,
ref_format = ref_storage_format_by_name(env);
if (ref_format == REF_STORAGE_FORMAT_UNKNOWN)
die(_("unknown ref storage format '%s'"), env);
- repo_fmt->ref_storage_format = ref_format;
+ if (repo_fmt->version < 0 ||
+ repo_fmt->ref_storage_format == REF_STORAGE_FORMAT_UNKNOWN)
+ repo_fmt->ref_storage_format = ref_format;
} else if (cfg.ref_format != REF_STORAGE_FORMAT_UNKNOWN) {
repo_fmt->ref_storage_format = cfg.ref_format;
}
diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index 213d5984b1..6dff8b75f1 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -697,6 +697,15 @@ do
git -C refformat rev-parse --show-ref-format >actual &&
test_cmp expect actual
'
+
+ test_expect_success "reinit repository with GIT_DEFAULT_REF_FORMAT=$format does not change format" '
+ test_when_finished "rm -rf refformat" &&
+ git init refformat &&
+ git -C refformat rev-parse --show-ref-format >expect &&
+ GIT_DEFAULT_REF_FORMAT=$format git init refformat &&
+ git -C refformat rev-parse --show-ref-format >actual &&
+ test_cmp expect actual
+ '
done
test_expect_success "--ref-format= overrides GIT_DEFAULT_REF_FORMAT" '