+ YAZ_CHECK(tst_ccl_query(bibset, "z=(ti=b)", "@attr 4=2 @attr 1=4 b "));
+ YAZ_CHECK(tst_ccl_query(bibset, "z=(ti=b?)",
+ "@attr 5=1 @attr 4=2 @attr 1=4 b "));
+ YAZ_CHECK(tst_ccl_query(bibset, "z=(a? and ti=b? and c?)",
+ "@and @and "
+ "@attr 5=104 a? "
+ "@attr 5=1 @attr 4=2 @attr 1=4 b "
+ "@attr 5=104 c? "));
+