[PATCH v2 2/4] commit: write commit-graph with Bloom filters

["Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>]

From: Derrick Stolee <dstolee@microsoft.com>

The GIT_TEST_COMMIT_GRAPH environment variable updates the commit-
graph file whenever "git commit" is run, ensuring that we always
have an updated commit-graph throughout the test suite. The
GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS environment variable was
introduced to write the changed-path Bloom filters whenever "git
commit-graph write" is run. However, the GIT_TEST_COMMIT_GRAPH
trick doesn't launch a separate process and instead writes it
directly.

Update the "git commit" builtin to write changed-path Bloom filters
when both GIT_TEST_COMMIT_GRAPH and GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS
are enabled.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 commit-graph.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/commit-graph.c b/commit-graph.c
index 77668629e27..3e8f36ce5c8 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -1968,6 +1968,8 @@ int write_commit_graph(struct object_directory *odb,
 	ctx->check_oids = flags & COMMIT_GRAPH_WRITE_CHECK_OIDS ? 1 : 0;
 	ctx->split_opts = split_opts;
 	ctx->changed_paths = flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS ? 1 : 0;
+	if (git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
+		ctx->changed_paths = 1;
 	ctx->total_bloom_filter_data_size = 0;
 
 	if (ctx->split) {
-- 
gitgitgadget