commit-graph: not compatible with replace objects
Create new method commit_graph_compatible(r) to check if a given
repository r is compatible with the commit-graph feature. Fill the
method with a check to see if replace-objects exist. Test this
interaction succeeds, including ignoring an existing commit-graph and
failing to write a new commit-graph. However, we do ensure that
we write a new commit-graph by setting read_replace_refs to 0, thereby
ignoring the replace refs.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index 0bf0c48..da737df 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -120,6 +120,8 @@ static int graph_read(int argc, const char **argv)
return 0;
}
+extern int read_replace_refs;
+
static int graph_write(int argc, const char **argv)
{
struct string_list *pack_indexes = NULL;
@@ -150,6 +152,8 @@ static int graph_write(int argc, const char **argv)
if (!opts.obj_dir)
opts.obj_dir = get_object_directory();
+ read_replace_refs = 0;
+
if (opts.reachable) {
write_commit_graph_reachable(opts.obj_dir, opts.append);
return 0;
