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

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 2ba62fbc178e1c92dff493beebdc9683b36efd2a..a34e55f874ca06da4cae6ab5d46bc3263c58d521 100755 (executable)
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -257,12 +257,7 @@ test_expect_success SYMLINKS '__gitdir - resulting path avoids symlinks' '
 '
 
 test_expect_success '__gitdir - not a git repository' '
-       (
-               cd subdir/subsubdir &&
-               GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY" &&
-               export GIT_CEILING_DIRECTORIES &&
-               test_must_fail __gitdir
-       )
+       nongit test_must_fail __gitdir
 '
 
 test_expect_success '__gitcomp - trailing space - options' '