[Yap-users] I just built YAP but I am a newbie to it... So basic questions...

[Douglas M. <log...@gm...>]

% YAP 6.3.4-c8305988 (compiled  2016-02-09T20:55:16@gitlab)


?- listing(file_search_path).

:- dynamic file_search_path/2.
:- multifile file_search_path/2.

file_search_path(foreign,yap('lib/Yap')).

    true.
?- file_search_path(X,Y).
X = library,
Y = '/devel/LogicmooDeveloperFramework/yap-6.3' ? ;
X = library,
Y = '/usr/local/share/Yap' ? ;
user_input:3:0 error in prolog:'$handle_error'/3:
user_input:3:0 found  while compiling this file.

        !!!  procedure system_commons/1 could not be found,
          goal was
prolog:context(prolog:system_commons(_131114),prolog:'$command'/4)
          exception raised from prolog:'$handle_error':3, user_input:0:0.




Why doesnt listing show more?

Is something wrong that prolog:system_commons/1  is missing?