initdb -D data_old &&
pg_ctl -D data_old -l logfile_old start &&
psql -ac "CREATE COLLATION testcoll_backwards (provider = icu, locale = '@colBackwards=yes')" postgres &&
echo "In the old cluster:" &&
psql -ac "SELECT collname, colliculocale FROM pg_collation WHERE collname = 'testcoll_backwards'" postgres &&
pg_dump postgres > dump_postgres.sql &&
pg_ctl -D data_old stop &&
initdb -D data_new &&
pg_ctl -D data_new -l logfile_new start &&
psql -v ON_ERROR_STOP=1 -f dump_postgres.sql postgres &&
echo "In the new cluster:" &&
psql -ac "SELECT collname, colliculocale FROM pg_collation WHERE collname = 'testcoll_backwards'" postgres &&
pg_ctl -D data_new stop