cd "$base_dir"
-rm -f $U
+rm -f "$U"
test_expect_success 'cloning with reference (no -l -s)' \
-'GIT_DEBUG_SEND_PACK=3 git clone --reference B "file://$(pwd)/A" D 3>$U'
+'GIT_DEBUG_SEND_PACK=3 git clone --reference B "file://$(pwd)/A" D 3>"$U"'
test_expect_success 'fetched no objects' \
-'! grep "^want" $U'
+'! grep "^want" "$U"'
cd "$base_dir"