prompt

C/cdmgr.c

@@ -2322,7 +2322,7 @@ static Int new_system_predicate(
 }
 
 static Int
-    p_is_system_predicate(USES_REGS1) { /* '$is_multifile'(+S,+Mod)	 */
+    is_system_predicate(USES_REGS1) { /* '$is_multifile'(+S,+Mod)	 */
   PredEntry *pe;
   Term t1 = Deref(ARG1);
 
@@ -2341,7 +2341,7 @@ static Int
 }
 
 static Int
-    p_is_opaque_predicate(USES_REGS1) { /* '$is_multifile'(+S,+Mod)	 */
+    is_opaque_predicate(USES_REGS1) { /* '$is_multifile'(+S,+Mod)	 */
   PredEntry *pe;
   Term t1 = Deref(ARG1);
   bool out;
@@ -4323,9 +4323,9 @@ void Yap_InitCdMgr(void) {
                 TestPredFlag | SafePredFlag);
   Yap_InitCPred("$new_system_predicate", 3, new_system_predicate,
                 SafePredFlag | SyncPredFlag);
-  Yap_InitCPred("$is_system_predicate", 2, p_is_system_predicate,
+  Yap_InitCPred("$is_system_predicate", 2, is_system_predicate,
                 TestPredFlag | SafePredFlag);
-  Yap_InitCPred("$is_opaque_predicate", 2, p_is_opaque_predicate,
+  Yap_InitCPred("$is_opaque_predicate", 2, is_opaque_predicate,
                 TestPredFlag | SafePredFlag);
   Yap_InitCPred("$new_discontiguous", 3, p_new_discontiguous,
                 SafePredFlag | SyncPredFlag);

os/readline.c

@@ -322,10 +322,11 @@ static bool getLine(int inp) {
   rl_instream = GLOBAL_Stream[inp].file;
   const unsigned char *myrl_line = NULL;
   StreamDesc *s = GLOBAL_Stream + inp;
+  bool shouldPrompt = Yap_DoPrompt(s);
 
   /* window of vulnerability opened */
   LOCAL_PrologMode |= ConsoleGetcMode;
-  if (Yap_DoPrompt(s)) { // no output so far
+  if (true || shouldPrompt) { // no output so far
     rl_set_signals();
     myrl_line = (unsigned char *)readline(LOCAL_Prompt);
     rl_clear_signals();

pl/debug.yap

@@ -367,12 +367,13 @@ be lost.
     !,
     set_stream(S,alias(debugger_input)).
 '$debugger_input' :-
-	current_prolog_flag(unix, true ), !,
+    current_prolog_flag(unix, true ),
+    !,
     open('/dev/tty', read, _S, [alias(debugger_input),bom(false)]).
 '$debugger_input' :-
-        current_prolog_flag(windows, true ), !,
+    current_prolog_flag(windows, true ),
+    !,
     open('CONIN$', read, _S, [alias(debugger_input),bom(false)]).
-
 '$debugger_output' :-
     stream_property(_,alias(debugger_output)),
     !.
@@ -383,10 +384,12 @@ be lost.
     !,
     set_stream(S,alias(debugger_output)).
 '$debugger_output' :-
-	current_prolog_flag(unix, true ), !,
+    current_prolog_flag(unix, true ),
+    !,
     open('/dev/tty', write, _S, [alias(debugger_output)]).
 '$debugger_output' :-
-        current_prolog_flag(windows, true ), !,
+    current_prolog_flag(windows, true ),
+    !,
     open('CONOUT$', write, _S, [alias(debugger_output)]).
 
 
@@ -398,13 +401,18 @@ be lost.
 % debug a complex query
 %
 '$trace_query'(V, M, _CP, _) :-
-    var(V), !, call(M:V).
+    var(V),
+    !,
+    call(M:V).
 '$trace_query'(!, _, CP, _) :-
-    !, '$$cut_by'(CP).
+    !,
+    '$$cut_by'(CP).
 '$trace_query'('$cut_by'(M), _, _, _) :-
-    !, '$$cut_by'(M).
+    !,
+    '$$cut_by'(M).
 '$trace_query'('$$cut_by'(M), _, _, _) :-
-    !, '$$cut_by'(M).
+    !,
+    '$$cut_by'(M).
 '$trace_query'(M:G, _, CP,S) :-
     !,
     '$yap_strip_module'(M:G, M0, G0),
@@ -676,22 +684,21 @@ be lost.
 '$port'(P,G,Module,L,Deterministic, Info) :-
 	% at this point we are done with leap or skip
 	repeat,
+	flush_output,
+	'$clear_input'(debugger_input),
 	 '$trace_msg'(P,G,Module,L,Deterministic),
 	(
 	  '$unleashed'(P) ->
 	  '$action'('\n',P,L,G,Module,Info),
 	  nl(debugger_output)
 	  ;
-	  write(debugger_output,' ? '),
-         '$clear_input'(debugger_input),
+	  prompt1(' ? '),
           get_char(debugger_input,C),
 	  '$action'(C,P,L,G,Module,_Info)
 	),
 	!.
 
 '$trace_msg'(P,G,Module,L,Deterministic) :-
-	flush_output(user_output),
-	flush_output(user_error),
 	functor(P,P0,_),
 	(P = exit, Deterministic \= deterministic -> Det = '?' ; Det = ' '),
 	('$pred_being_spied'(G,Module) -> CSPY = '*' ; CSPY = ' '),
@@ -954,11 +961,17 @@ be lost.
 '$deb_inc_in_sterm_oldie'(C,[],C).
 
 '$get_sterm_list'(L0,C,N,L) :-
-	( C =:= "^", N =\= 0 -> get_code(debugger_input, CN),
-				'$get_sterm_list'([N|L0],CN,0,L) ;
-	  C >= "0", C =< "9" -> NN is 10*N+C-"0", get_code(debugger_input, CN),
-				'$get_sterm_list'(L0,CN,NN,L);
-	  C =:= 10 -> (N =:= 0 -> L = L0 ; L=[N|L0]) ).
+    ( C =:= "^", N =\= 0 ->
+      get_code(debugger_input, CN),
+      '$get_sterm_list'([N|L0],CN,0,L)
+    ;
+    C >= "0", C =< "9" ->
+    NN is 10*N+C-"0", get_code(debugger_input, CN),
+    '$get_sterm_list'(L0,CN,NN,L)
+    ;
+    C =:= 10 ->
+    (N =:= 0 -> L = L0 ; L=[N|L0])
+    ).
 
 '$deb_get_sterm_in_g'([],G,G).
 '$deb_get_sterm_in_g'([H|T],G,A) :-
@@ -1007,17 +1020,20 @@ be lost.
 
 
 '$debugger_skip_trace_query'([CP|CPs],CPs1) :-
-	yap_hacks:choicepoint(CP,_,prolog,'$trace_query',4,(_;_),_), !,
+    yap_hacks:choicepoint(CP,_,prolog,'$trace_query',4,(_;_),_),
+    !,
     '$debugger_skip_trace_query'(CPs,CPs1).
 '$debugger_skip_trace_query'(CPs,CPs).
 
 '$debugger_skip_traces'([CP|CPs],CPs1) :-
-	yap_hacks:choicepoint(CP,_,prolog,'$port',4,(_;_),_), !,
+    yap_hacks:choicepoint(CP,_,prolog,'$port',4,(_;_),_),
+    !,
     '$debugger_skip_traces'(CPs,CPs1).
 '$debugger_skip_traces'(CPs,CPs).
 
 '$debugger_skip_loop_spy2'([CP|CPs],CPs1) :-
-	yap_hacks:choicepoint(CP,_,prolog,'$loop_spy2',5,(_;_),_), !,
+    yap_hacks:choicepoint(CP,_,prolog,'$loop_spy2',5,(_;_),_),
+    !,
     '$debugger_skip_loop_spy2'(CPs,CPs1).
 '$debugger_skip_loop_spy2'(CPs,CPs).
 

pl/spy.yap

@@ -112,7 +112,7 @@ mode and the existing spy-points, when the debugger is on.
 	      print_message(warning,no_match(nospy(M:F/N)))
 	  ).
  '$do_suspy'(S, F, N, T, M) :-
-	  '$system_predicate'(T,M),
+	  '$is_system_predicate'(T,M),
 	  '$predicate_flags'(T,M,F,F),
 	  F /\ 0x118dd080 =\= 0,
 	  ( S = spy ->
@@ -486,7 +486,7 @@ notrace(G) :-
 	 current_prolog_flag( debug, false )
      -> true
     ;
-	 '$system_predicate'(G,Module)
+	 '$is_opaque_zpredicate'(G,Module)
      -> true
     ;
 	 '$is_private'(G,Module)
@@ -507,7 +507,7 @@ notrace(G) :-
     GN > GoalNo
      ).
 '$creep_is_on_at_entry'(G,M,_GoalNo) :-
-    \+ '$system_predicate'(G,M),
+    \+ '$is_system_predicate'(G,M),
     '__NB_getval__'('$debug_state',state(Step, _GN, Spy,_), fail),
     (
 	Step \= zip

pl/top.yap

@@ -382,8 +382,8 @@ live :-
 	write_term(user_error,Answ,Opts).
 
 '$another' :-
-	format(user_error,' ? ',[]),
 	'$clear_input'(user_input),
+	prompt1(' ? '),
 	get_code(user_input,C),
 	'$do_another'(C).
 
@@ -703,7 +703,7 @@ write_query_answer( Bindings ) :-
 
 '$loop'(Stream,exo) :-
     prolog_flag(agc_margin,Old,0),
-    prompt1(': '), prompt(_,'     '),
+    prompt1(': '), prompt(_,'|     '),
     source_module(OldModule,OldModule),
     repeat,
     '$system_catch'(dbload_from_stream(Stream, OldModule, exo), '$db_load', Error,
@@ -712,7 +712,7 @@ write_query_answer( Bindings ) :-
     !.
 '$loop'(Stream,db) :-
     prolog_flag(agc_margin,Old,0),
-    prompt1(': '), prompt(_,'     '),
+    prompt1(': '), prompt(_,'|     '),
     source_module(OldModule,OldModule),
 	repeat,
 		'$system_catch'(dbload_from_stream(Stream, OldModule, db), '$db_load', Error, user:'$LoopError'(Error, db)
@@ -1017,7 +1017,7 @@ log_event( String, Args ) :-
 	DBON = true
 	->
 	(
-	    '__NB_getval__'('$debug_state',state(_, _, _, _,on), fail),
+	    '__NB_getval__'('$debug_state',state( _, _, _,on), fail),
 	    (
 		var(LF)
 	    ->