bisect: use "bisect--helper" and remove "filter_skipped" function

diff --git a/t/t4023-diff-rename-typechange.sh b/t/t4023-diff-rename-typechange.sh
index 297ddb5a25b682412851aed70370771aa5a15976..5099862ebac7cf381759783c5a3b696edb7ba5bf 100755 (executable)
--- a/t/t4023-diff-rename-typechange.sh
+++ b/t/t4023-diff-rename-typechange.sh
@@ -4,6 +4,13 @@ test_description='typechange rename detection'
 
 . ./test-lib.sh
 
+if ! test_have_prereq SYMLINKS
+then
+       say 'Symbolic links not supported, skipping tests.'
+       test_done
+       exit
+fi
+
 test_expect_success setup '
 
        rm -f foo bar &&