anchor.diff:      end.
   
   expand_module(Type, Data, M, Opts, Ps) ->
  +    ?dbg("type ~p, data ~p, m ~p, opts ~p, ps ~p",
  +		[Type, Data, M, Opts, Ps]),
       OwnPfx = case Type of
   		 module ->
   		     {_, _, Pfx, _} = lists:keyfind(prefix,1,Data),
  
positive.code:     end;
  expand_elems_([{{<<"$yang">>,_}, _, _, _} = IntStmt |T], ModR, Ps) ->
      [IntStmt | expand_elems_(T, ModR, Ps)];
  expand_elems_([{{Pfx,Extension}, L, Arg, Data}|T],
  	      #mod{module = Mod} = ModR, Ps) ->
      Mp = case find_prefix(Pfx, ModR) of
  	     false ->
  		 if Pfx == Mod ->
  
negative.code: 		    {ok, #mod{data = Yi} = OtherModR} ->
  			{find_grouping(UName, Pfx, Yi, L, []), OtherModR};
  		    error ->
  			?dbg("Elem ~p,~nMod ~p", [Elem, ModR]),
  			?dbg("Pfx ~p,~n Imports ~p", [Pfx, Imports]),
  			throw({unknown_prefix, [uses, L, U]})
  		end
  	end,
  