Merge branch 'ds/commit-graph-lockfile-fix'

Update to ds/generation-numbers topic.

* ds/commit-graph-lockfile-fix:
  commit-graph: fix UX issue when .lock file exists
  commit-graph.txt: update design document
  merge: check config before loading commits
  commit: use generation number in remove_redundant()
  commit: add short-circuit to paint_down_to_common()
  commit: use generation numbers for in_merge_bases()
  ref-filter: use generation number for --contains
  commit-graph: always load commit-graph information
  commit: use generations in paint_down_to_common()
  commit-graph: compute generation numbers
  commit: add generation number to struct commit
  ref-filter: fix outdated comment on in_commit_list

1 files changed, 4 insertions, 3 deletions

diff --git a/builtin/merge.c b/builtin/merge.c
index fb4faca250..4a4c09496c 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1186,14 +1186,15 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 	branch = branch_to_free = resolve_refdup("HEAD", 0, &head_oid, NULL);
 	if (branch)
 		skip_prefix(branch, "refs/heads/", &branch);
+
+	init_diff_ui_defaults();
+	git_config(git_merge_config, NULL);
+
 	if (!branch || is_null_oid(&head_oid))
 		head_commit = NULL;
 	else
 		head_commit = lookup_commit_or_die(&head_oid, "HEAD");
 
-	init_diff_ui_defaults();
-	git_config(git_merge_config, NULL);
-
 	if (branch_mergeoptions)
 		parse_branch_merge_options(branch_mergeoptions);
 	argc = parse_options(argc, argv, prefix, builtin_merge_options,