It is. Swi has made some breaks from the iso standard but the only one you'd really need to watch out for is string handling and you can put :- set_prolog_fl

It is. Swi has made some breaks from the iso standard but the only one you'd really need to watch out for is string handling and you can put :- set_prolog_flag(double_quotes,chars). At the top of your files and probably be completely fine.