From: Derrick Stolee <redacted>
A submodule is stored as a "Git link" that actually points to a commit
within a submodule. Submodules are populated or not depending on
submodule configuration, not sparse-checkout. To ensure that the
sparse-index feature integrates correctly with submodules, we should not
collapse a directory if there is a Git link within its range.
Signed-off-by: Derrick Stolee <redacted>
---
sparse-index.c | 1 +
t/t1092-sparse-checkout-compatibility.sh | 17 +++++++++++++++++
2 files changed, 18 insertions(+)
diff --git a/sparse-index.c b/sparse-index.c
index cb1f85635fbc..14029fafc750 100644
--- a/sparse-index.c
+++ b/sparse-index.c
@@ -52,6 +52,7 @@ static int convert_to_sparse_rec(struct index_state *istate,
struct cache_entry *ce = istate->cache[i];
if (ce_stage(ce) ||
+ S_ISGITLINK(ce->ce_mode) ||
!(ce->ce_flags & CE_SKIP_WORKTREE))
can_convert = 0;
}
diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
index ca87033d30b0..b38fab6455d9 100755
--- a/t/t1092-sparse-checkout-compatibility.sh
+++ b/t/t1092-sparse-checkout-compatibility.sh
@@ -374,4 +374,21 @@ test_expect_success 'clean' '
test_sparse_match test_path_is_dir folder1
'
+test_expect_success 'submodule handling' '
+ init_repos &&
+
+ test_all_match mkdir modules &&
+ test_all_match touch modules/a &&
+ test_all_match git add modules &&
+ test_all_match git commit -m "add modules directory" &&
+
+ run_on_all git submodule add "$(pwd)/initial-repo" modules/sub &&
+ test_all_match git commit -m "add submodule" &&
+
+ # having a submodule prevents "modules" from collapse
+ test-tool -C sparse-index read-cache --table >cache &&
+ grep "100644 blob .* modules/a" cache &&
+ grep "160000 commit $(git -C initial-repo rev-parse HEAD) modules/sub" cache
+'
+
test_done
--
gitgitgadget