YAZ_CHECK(tst_ccl_query(bibset, "reg=\\\"",
"\"\\\"\" "));
YAZ_CHECK(tst_ccl_query(bibset, "z=\\\"",
"\"\\\"\" "));
YAZ_CHECK(tst_ccl_query(bibset, "reg=.",
YAZ_CHECK(tst_ccl_query(bibset, "reg=\\\"",
"\"\\\"\" "));
YAZ_CHECK(tst_ccl_query(bibset, "z=\\\"",
"\"\\\"\" "));
YAZ_CHECK(tst_ccl_query(bibset, "reg=.",