t/Makefile: add a rule to re-run previously-failed tests

diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh
index 5e5370feb40c851fa29bdec17d687eb5f22502bb..8c2c6eaef83fe90d1faa088fe65ee4a851b1e471 100755 (executable)
--- a/t/t6030-bisect-porcelain.sh
+++ b/t/t6030-bisect-porcelain.sh
@@ -407,7 +407,7 @@ test_expect_success 'good merge base when good and bad are siblings' '
        test_i18ngrep "merge base must be tested" my_bisect_log.txt &&
        grep $HASH4 my_bisect_log.txt &&
        git bisect good > my_bisect_log.txt &&
-       test_must_fail grep "merge base must be tested" my_bisect_log.txt &&
+       ! grep "merge base must be tested" my_bisect_log.txt &&
        grep $HASH6 my_bisect_log.txt &&
        git bisect reset
 '