revision: implement sparse algorithm

diff --git a/t/t3409-rebase-preserve-merges.sh b/t/t3409-rebase-preserve-merges.sh
index 8c251c57a6827317a9c17fac2a0e99df3c9becf8..3b340f1ece3601b0729d09ea1f976db5b3a8ef65 100755 (executable)
--- a/t/t3409-rebase-preserve-merges.sh
+++ b/t/t3409-rebase-preserve-merges.sh
@@ -8,6 +8,11 @@ Run "git rebase -p" and check that merges are properly carried along
 '
 . ./test-lib.sh
 
+if ! test_have_prereq REBASE_P; then
+       skip_all='skipping git rebase -p tests, as asked for'
+       test_done
+fi
+
 GIT_AUTHOR_EMAIL=bogus_email_address
 export GIT_AUTHOR_EMAIL