diff --git a/ChangeLog b/ChangeLog
index 0e1d4336f..c9e21295c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2004-06-22  Thomas Martinez  <martinez@src.lip6.fr>
+
+	* src/ltlvisit/reducform.cc, src/tgba/tgbareduc.cc,
+	src/tgbaalgos/reductgba_sim.cc, src/tgbaalgos/reductgba_sim.hh
+	src/tgbaalgos/reductgba_sim_del.cc, src/tgbatest/reduccmp.test,
+	src/tgbatest/reductgba.cc: 80 columns and style.
+
 2004-06-22  Alexandre Duret-Lutz  <adl@src.lip6.fr>
 
 	* src/sanity/style.test: Typo.
diff --git a/src/ltlvisit/reducform.cc b/src/ltlvisit/reducform.cc
index 47c15cab2..599608271 100644
--- a/src/ltlvisit/reducform.cc
+++ b/src/ltlvisit/reducform.cc
@@ -202,7 +202,7 @@ namespace spot
 	if (opt_ & Reduce_Syntactic_Implications)
 	  {
 
-	    bool removed = true;;
+	    bool removed = true;
 	    multop::vec::iterator f1;
 	    multop::vec::iterator f2;
 
@@ -229,7 +229,7 @@ namespace spot
 		      }
 		    else if ((syntactic_implication(*f2, *f1) && // f2 < f1
 			      (mo->op() == multop::Or)) ||
-			     ((syntactic_implication(*f1,* f2)) && // f1 < f2
+			     ((syntactic_implication(*f1, *f2)) && // f1 < f2
 			      (mo->op() == multop::And)))
 		      {
 			// We keep f1
diff --git a/src/tgba/tgbareduc.cc b/src/tgba/tgbareduc.cc
index 4fd5e9e6a..976a1fa50 100644
--- a/src/tgba/tgbareduc.cc
+++ b/src/tgba/tgbareduc.cc
@@ -40,7 +40,7 @@ namespace spot
     run();
     all_acceptance_conditions_ = a->all_acceptance_conditions();
     all_acceptance_conditions_computed_ = true;
-    seen_ = NULL;
+    seen_ = 0;
     scc_computed_ = false;
   }
 
@@ -355,7 +355,7 @@ namespace spot
 	    if ((*j)->dest == st)
 	      {
 		// Remove the transition
-		delete(*j);
+		delete *j;
 		j = (*p)->erase(j);
 		++j;
 	      }
@@ -623,10 +623,10 @@ namespace spot
       {
 	acc_ = bddfalse;
 	b = true;
-	assert(seen_ == NULL);
+	assert(seen_ == 0);
 	seen_ = new seen_map();
 	i = si_.find(s);
-	assert(i->first != NULL);
+	assert(i->first != 0);
 	n = i->second;
       }
     ///////////////////////////////
@@ -685,8 +685,8 @@ namespace spot
 	seen_->clear();
 	std::cout << "delete seen_" << std::endl;
 	delete seen_;
-	std::cout << "seen_ = NULL" << std::endl;
-	seen_ = NULL;
+	std::cout << "seen_ = 0" << std::endl;
+	seen_ = 0;
 	std::cout << "acc_ == this->all_acceptance_conditions()" << std::endl;
 	if (acc_ == this->all_acceptance_conditions())
 	  ret = false;
@@ -724,8 +724,8 @@ namespace spot
   {
     if (n == -1)
       {
-	assert(seen_ == NULL);
-	seen_ = new seen_map();;
+	assert(seen_ == 0);
+	seen_ = new seen_map();
       }
 
     seen_map::const_iterator sm = seen_->find(s);
@@ -744,7 +744,7 @@ namespace spot
     if (n == -1)
       {
 	delete seen_;
-	seen_ = NULL;
+	seen_ = 0;
       }
   }
 
@@ -764,10 +764,10 @@ namespace spot
       {
 	acc_ == bddfalse;
 	b = true;
-	assert(seen_ == NULL);
+	assert(seen_ == 0);
 	seen_ = new seen_map();
 	i = si_.find(s);
-	assert(i->first != NULL);
+	assert(i->first != 0);
 	n = i->second;
       }
 
@@ -796,7 +796,7 @@ namespace spot
     if (b)
       {
 	delete seen_;
-	seen_ = NULL;
+	seen_ = 0;
 	if (acc_ == this->all_acceptance_conditions())
 	  ret = false;
       }
diff --git a/src/tgbaalgos/reductgba_sim.cc b/src/tgbaalgos/reductgba_sim.cc
index 6e4f309ee..21f52e738 100644
--- a/src/tgbaalgos/reductgba_sim.cc
+++ b/src/tgbaalgos/reductgba_sim.cc
@@ -54,23 +54,11 @@ namespace spot
     bool exist = false;
     for (sn_v::iterator i = lnode_succ->begin();
 	 i != lnode_succ->end(); ++i)
-      // Be careful, we have to compare two duplicator node
-      if (*i == n)
+      if ((*i)->compare(n) == true)
 	exist = true;
     if (exist)
       return false;
-    // TO TEST FOR THE DIRECT SIMULATION //
-    /*
-    bool exist = false;
-    for (sn_v::iterator i = lnode_succ->begin();
-	 i != lnode_succ->end(); ++i)
-      // Be careful, we have to compare two duplicator node
-      if (dynamic_cast<duplicator_node*>(*i)->compare(n) == 0)
-	exist = true;
-    if (exist)
-      return false;
-    */
-    ///////////////
+
     lnode_succ->push_back(n);
     return true;
   }
@@ -93,14 +81,12 @@ namespace spot
   void
   spoiler_node::add_pred(spoiler_node* n)
   {
-    // TO TEST FOR THE DIRECT SIMULATION //
     bool exist = false;
     for (sn_v::iterator i = lnode_pred->begin();
 	 i != lnode_pred->end(); ++i)
       if ((*i)->compare(n) == 0)
 	exist = true;
     if (!exist)
-      ///////////////
       lnode_pred->push_back(n);
   }
 
@@ -121,7 +107,7 @@ namespace spot
       {
 	not_win |= (*i)->not_win;
       }
-    return (change != not_win);
+    return change != not_win;
   }
 
   std::string
@@ -218,7 +204,7 @@ namespace spot
 	  }
       }
 
-    return (change != not_win);
+    return change != not_win;
   }
 
   std::string
@@ -407,12 +393,12 @@ namespace spot
   void
   parity_game_graph_direct::build_couple()
   {
-    tgba_succ_iterator* si = NULL;
+    tgba_succ_iterator* si = 0;
     typedef Sgi::pair<bdd, bdd> couple_bdd;
-    couple_bdd *p = NULL;
-    Sgi::vector<couple_bdd*>* trans = NULL;
+    couple_bdd *p = 0;
+    Sgi::vector<couple_bdd*>* trans = 0;
     bool exist = false;
-    spot::state* s = NULL;
+    spot::state* s = 0;
 
     for (Sgi::vector<const state*>::iterator i = tgba_state_.begin();
 	 i != tgba_state_.end(); ++i)
@@ -469,11 +455,13 @@ namespace spot
 			     s != tgba_state_.end(); ++s)
 			  {
 			    duplicator_node* n2
-			      = new duplicator_node(*i,
-						    *s,
-						    si->current_condition(),
-						    si->current_acceptance_conditions(),
-						    nb_node_parity_game++);
+			      = new
+			      duplicator_node(*i,
+					      *s,
+					      si->current_condition(),
+					      si
+					      ->current_acceptance_conditions(),
+					      nb_node_parity_game++);
 			    duplicator_vertice_.push_back(n2);
 			  }
 		      }
@@ -498,7 +486,7 @@ namespace spot
   {
     int nb_ds = 0;
     int nb_sd = 0;
-    spot::state* s = NULL;
+    spot::state* s = 0;
 
     // for each couple of (spoiler, duplicator)
     for (Sgi::vector<spoiler_node*>::iterator i
@@ -509,7 +497,8 @@ namespace spot
 	     j != duplicator_vertice_.end(); ++j)
 	  {
 	    // We add a link between a duplicator and a spoiler.
-	    if ((*j)->get_spoiler_node()->compare((*i)->get_spoiler_node()) == 0)
+	    if ((*j)->get_spoiler_node()
+		->compare((*i)->get_spoiler_node()) == 0)
 	      {
 		tgba_succ_iterator* si
 		  = automata_->succ_iter((*j)->get_duplicator_node());
@@ -529,7 +518,8 @@ namespace spot
 	      }
 
 	    // We add a link between a spoiler and a duplicator.
-	    if ((*j)->get_duplicator_node()->compare((*i)->get_duplicator_node()) == 0)
+	    if ((*j)->get_duplicator_node()
+		->compare((*i)->get_duplicator_node()) == 0)
 	      {
 		tgba_succ_iterator* si
 		  = automata_->succ_iter((*i)->get_spoiler_node());
@@ -579,7 +569,7 @@ namespace spot
   parity_game_graph_direct::get_relation()
   {
     simulation_relation* rel = new simulation_relation();
-    state_couple* p = NULL;
+    state_couple* p = 0;
     seen_map::iterator j;
 
     for (Sgi::vector<spoiler_node*>::iterator i
@@ -638,7 +628,7 @@ namespace spot
   void
   free_relation_simulation(simulation_relation* rel)
   {
-    if (rel == NULL)
+    if (rel == 0)
       return;
 
     Sgi::hash_map<const spot::state*, int,
@@ -658,13 +648,13 @@ namespace spot
 	delete *i;
       }
     delete rel;
-    rel = NULL;
+    rel = 0;
 
     for (j = seen.begin(); j != seen.end();)
       {
 	const state* ptr = j->first;
 	++j;
-	delete(ptr);
+	delete ptr;
       }
   }
 
diff --git a/src/tgbaalgos/reductgba_sim.hh b/src/tgbaalgos/reductgba_sim.hh
index 609ae2928..7f34d0cc5 100644
--- a/src/tgbaalgos/reductgba_sim.hh
+++ b/src/tgbaalgos/reductgba_sim.hh
@@ -63,7 +63,7 @@ namespace spot
   /// Compute a delayed simulation relation on state of tgba \a f.
   /// FIXME : this method is incorrect !!
   /// Don't use it !!
-  simulation_relation*  get_delayed_relation_simulation(const tgba* a,
+  simulation_relation* get_delayed_relation_simulation(const tgba* a,
 						      int opt = -1);
 
   /// To free a simulation relation.
diff --git a/src/tgbaalgos/reductgba_sim_del.cc b/src/tgbaalgos/reductgba_sim_del.cc
index 35002e8c8..b4edc85ed 100644
--- a/src/tgbaalgos/reductgba_sim_del.cc
+++ b/src/tgbaalgos/reductgba_sim_del.cc
@@ -331,12 +331,12 @@ namespace spot
     nb_spoiler = 0;
     nb_duplicator = 0;
 
-    tgba_succ_iterator* si = NULL;
+    tgba_succ_iterator* si = 0;
     typedef Sgi::pair<bdd, bdd> couple_bdd;
-    couple_bdd *p = NULL;
-    Sgi::vector<couple_bdd*>* trans = NULL;
+    couple_bdd *p = 0;
+    Sgi::vector<couple_bdd*>* trans = 0;
     bool exist = false;
-    spot::state* s = NULL;
+    spot::state* s = 0;
 
     s_v::iterator i;
     for (i = tgba_state_.begin(); i != tgba_state_.end(); ++i)
@@ -448,7 +448,7 @@ namespace spot
     //std::cout << "build link" << std::endl;
     int nb_ds = 0;
     int nb_sd = 0;
-    spot::state* s = NULL;
+    spot::state* s = 0;
 
     // for each couple of (spoiler, duplicator)
     sn_v::iterator i;
@@ -557,7 +557,7 @@ namespace spot
     // We create when it's possible a duplicator node
     // and recursively his successor.
 
-    //spot::state* s1 = NULL;
+    //spot::state* s1 = 0;
     //bool exist_pred = false;
 
     sn_v::iterator i1;
@@ -574,7 +574,7 @@ namespace spot
 	  {
 	    tgba_succ_iterator* si;
 	    s_v::iterator i2;
-	    spot::state* s2 = NULL;
+	    spot::state* s2 = 0;
 	    for (i2 = tgba_state_.begin();
 		 i2 != tgba_state_.end(); ++i2)
 	      {
@@ -634,10 +634,10 @@ namespace spot
 						btmp,
 						nb_node_parity_game++);
 
-		// dn is already a successor of sn.
 		std::cout << "spoiler call add_succ" << std::endl;
 		if (!(sn->add_succ(dn)))
 		  {
+		    // dn is already a successor of sn.
 		    std::cout << "dn is already a successor of sn."
 			      << std::endl;
 		    continue;
@@ -645,12 +645,6 @@ namespace spot
 		std::cout << "dn is a new successor of sn." << std::endl;
 		(dn)->add_pred(sn);
 
-		/* TEST
-		   bdd btmp2 =
-		   dynamic_cast<spoiler_node_delayed*>(sn)->
-		   get_acceptance_condition_visited();
-		*/
-
 		build_recurse_successor_duplicator(dn, sn);
 	      }
 	    delete s;
@@ -664,7 +658,7 @@ namespace spot
   void
   parity_game_graph_delayed::
   build_recurse_successor_duplicator(duplicator_node* dn,
-				     spoiler_node* sn)
+				     spoiler_node*)
   {
     std::cout << "build_recurse_successor_duplicator" << std::endl;
 
@@ -675,9 +669,13 @@ namespace spot
       {
 	std::cout << "transition " << i++ << std::endl;
 
+	/*
 	bdd btmp =
 	  dynamic_cast<spoiler_node_delayed*>(sn)->
 	    get_acceptance_condition_visited();
+	*/
+
+	bdd btmp = dn->get_acc();
 	bdd btmp2 = btmp - si->current_acceptance_conditions();
 
 	/*
@@ -694,7 +692,7 @@ namespace spot
 	    if (s->compare(*i1) == 0)
 	      {
 		spoiler_node_delayed* sn_n
-		  = add_spoiler_node_delayed(sn->get_spoiler_node(),
+		  = add_spoiler_node_delayed(dn->get_spoiler_node(),
 					     *i1,
 					     btmp2,
 					     nb_node_parity_game++);
@@ -737,7 +735,7 @@ namespace spot
 	       = duplicator_vertice_.begin();
 	     i != duplicator_vertice_.end(); ++i)
       {
-	std::cout << "COMPARE" << std::endl;
+	//std::cout << "COMPARE" << std::endl;
 	if (dn_n->compare(*i))
 	  {
 	    exist = true;
@@ -768,7 +766,7 @@ namespace spot
 	   = spoiler_vertice_.begin();
 	 i != spoiler_vertice_.end(); ++i)
       {
-	std::cout << "COMPARE" << std::endl;
+	//std::cout << "COMPARE" << std::endl;
 	if (sn_n->compare(*i))
 	  {
 	    exist = true;
@@ -873,7 +871,7 @@ namespace spot
   parity_game_graph_delayed::get_relation()
   {
     simulation_relation* rel = new simulation_relation();
-    state_couple* p = NULL;
+    state_couple* p = 0;
     seen_map::iterator j;
 
     for (Sgi::vector<spoiler_node*>::iterator i
@@ -922,7 +920,7 @@ namespace spot
     this->build_link();
     std::cout << "prune" << std::endl;
     this->prune();
-    std::cout << "lift" << std::endl;
+    std::cout << "lift : " << nb_spoiler_loose_ << std::endl;
     this->lift();
     std::cout << "END" << std::endl;
     //this->print(std::cout);
@@ -934,15 +932,18 @@ namespace spot
   {
     /// FIXME : this method is incorrect !!
     /// Don't use it !!
-    /*
-      parity_game_graph_delayed* G = new parity_game_graph_delayed(f);
-      simulation_relation* rel = G->get_relation();
-      if (opt == 1)
+    parity_game_graph_delayed* G = new parity_game_graph_delayed(f);
+    simulation_relation* rel = G->get_relation();
+    if ((opt == 1) || (opt == -1))
       G->print(std::cout);
-      delete G;
+    delete G;
+
+    return rel;
+
+    /*
+      return get_direct_relation_simulation(f, opt);
     */
 
-    return get_direct_relation_simulation(f, opt);
   }
 
 }
diff --git a/src/tgbatest/reduccmp.test b/src/tgbatest/reduccmp.test
index 67c13624c..f27d52261 100755
--- a/src/tgbatest/reduccmp.test
+++ b/src/tgbatest/reduccmp.test
@@ -43,6 +43,8 @@ digraph G {
 }
 EOF
 
+rm input stdout expected
+
 # FIXME
 exit 0
 
@@ -50,5 +52,3 @@ exit 0
 # (The order is not guaranteed by SPOT.)
 sed 's/!b & a/a \& !b/g' stdout > tmp_ && mv tmp_ stdout
 diff stdout expected
-
-#rm input stdout expected
diff --git a/src/tgbatest/reductgba.cc b/src/tgbatest/reductgba.cc
index cb68bd5f4..08815cad4 100644
--- a/src/tgbatest/reductgba.cc
+++ b/src/tgbatest/reductgba.cc
@@ -85,9 +85,9 @@ main(int argc, char** argv)
   }
 
   int exit_code = 0;
-  spot::simulation_relation* rel = NULL;
-  spot::tgba* automata = NULL;
-  spot::tgba_reduc* automatareduc = NULL;
+  spot::simulation_relation* rel = 0;
+  spot::tgba* automata = 0;
+  spot::tgba_reduc* automatareduc = 0;
 
   spot::ltl::environment& env(spot::ltl::default_environment::instance());
   spot::bdd_dict* dict = new spot::bdd_dict();
@@ -121,7 +121,7 @@ main(int argc, char** argv)
       automatareduc->quotient_state(rel);
     }
 
-  if (rel != NULL)
+  if (rel != 0)
     {
       automatareduc->display_rel_sim(rel, std::cout);
       spot::free_relation_simulation(rel);
@@ -133,17 +133,17 @@ main(int argc, char** argv)
       //automatareduc->display_scc(std::cout);
     }
 
-  if (automatareduc != NULL)
+  if (automatareduc != 0)
     {
       spot::dotty_reachable(std::cout, automatareduc);
     }
 
-  if (automata != NULL)
+  if (automata != 0)
     delete automata;
-  if (automatareduc != NULL)
+  if (automatareduc != 0)
     delete automatareduc;
 #ifndef REDUCCMP
-  if (f != NULL)
+  if (f != 0)
     spot::ltl::destroy(f);
 #endif
 
@@ -152,7 +152,7 @@ main(int argc, char** argv)
   assert(spot::ltl::binop::instance_count() == 0);
   assert(spot::ltl::multop::instance_count() == 0);
 
-  if (dict != NULL)
+  if (dict != 0)
     delete dict;
 
   return exit_code;