@@ -23,6 +23,7 @@
 #include "notes-merge.h"
 #include "notes-utils.h"
 #include "worktree.h"
+#include "xdiff-interface.h"
 
 static const char * const git_notes_usage[] = {
 	N_("git notes [--ref <notes-ref>] [list [<object>]]"),

@@ -1000,7 +1001,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
 		OPT_END()
 	};
 
-	git_config(git_default_config, NULL);
+	git_config(git_xmerge_config, NULL);
 	argc = parse_options(argc, argv, prefix, options, git_notes_usage,
 			     PARSE_OPT_STOP_AT_NON_OPTION);
 

@@ -62,4 +62,31 @@ test_expect_success 'merge-tree' '
 	)
 '
 
+test_expect_success 'notes' '
+	test_create_repo notes &&
+	(
+		test_commit initial &&
+
+		git -c core.notesRef=refs/notes/b notes add -m b initial &&
+
+		git update-ref refs/notes/r refs/notes/b &&
+		git -c core.notesRef=refs/notes/r notes add -f -m r initial &&
+
+		git update-ref refs/notes/l refs/notes/b &&
+		git config core.notesRef refs/notes/l &&
+		git notes add -f -m l initial &&
+
+		test_must_fail git notes merge r &&
+		! grep -E "\|+" .git/NOTES_MERGE_WORKTREE/* &&
+
+		git notes merge --abort &&
+		test_must_fail git -c merge.conflictstyle=diff3 notes merge r &&
+		grep -E "\|+" .git/NOTES_MERGE_WORKTREE/* &&
+
+		git notes merge --abort &&
+		test_must_fail git -c merge.conflictstyle=merge notes merge r &&
+		! grep -E "\|+" .git/NOTES_MERGE_WORKTREE/*
+	)
+'
+
 test_done