and split subcommands of git subtree.
'
-export TEST_DIRECTORY=$(pwd)/../../../t
+TEST_DIRECTORY=$(pwd)/../../../t
+export TEST_DIRECTORY
. ../../../t/test-lib.sh
# Save this hash for testing later.
-subdir_hash=`git rev-parse HEAD`
+subdir_hash=$(git rev-parse HEAD)
test_expect_success 'add sub2' '
create sub2 &&