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

diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh
index 830bf2a2f6d4d85358a54f58f74b4ed9fdc954d5..886b6953e40f9fceae18642ebec031e0bdf511e3 100755 (executable)
--- a/t/t5000-tar-tree.sh
+++ b/t/t5000-tar-tree.sh
@@ -94,20 +94,6 @@ check_tar() {
        '
 }
 
-# run "$@" inside a non-git directory
-nongit () {
-       test -d non-repo ||
-       mkdir non-repo ||
-       return 1
-
-       (
-               GIT_CEILING_DIRECTORIES=$(pwd) &&
-               export GIT_CEILING_DIRECTORIES &&
-               cd non-repo &&
-               "$@"
-       )
-}
-
 test_expect_success \
     'populate workdir' \
     'mkdir a &&