diff --git a/ChangeLog b/ChangeLog
index 81cdf4c41..9bd0c2b40 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,42 @@
+2003-06-16  Alexandre Duret-Lutz  <aduret@src.lip6.fr>
+
+	Make sure we can multiply two tgba_explicit.
+	
+	* tgba/state.hh (state::translate, state::clone, state::as_bdd):
+	New virtual methods.
+	* tgba/stataebdd.cc (state::translate, state::clone): New methods.
+	* tgba/stataebdd.hh (state::translate, state::clone): New methods.
+	* tgba/tgbabddprod.cc (state_bdd_product::clone,
+	tgba_bdd_product_succ_iterator::~tgba_bdd_product_succ_iterator):
+	New methods.
+	(tgba_bdd_product_succ_iterator::first): Reset right_
+	if any of left_ or right_ is already done (i.e., is empty).
+	(tgba_bdd_product_succ_iterator::done): Return true
+	if right_ is NULL.
+	(tgba_bdd_product_succ_iterator::current_state,
+	tgba_bdd_product::get_init_state): Work	directory with `state's.
+	* tgba/tgbabddprod.hh (state_bdd_product::clone,
+	tgba_bdd_product_succ_iterator::~tgba_bdd_product_succ_iterator):
+	New methods.
+	* tgba/tgbabddtranslateproxy.cc
+	(tgba_bdd_translate_proxy_succ_iterator::
+	tgba_bdd_translate_proxy_succ_iterator): Work on any kind of iteraator.
+	(tgba_bdd_translate_proxy_succ_iterator::
+	~tgba_bdd_translate_proxy_succ_iterator): New method.
+	(tgba_bdd_translate_proxy_succ_iterator::current_state,
+	tgba_bdd_translate_proxy::get_init_state,
+	tgba_bdd_translate_proxy::succ_iter): Work on `state's and
+	`tgba_succ_iterator's directlry.
+	(tgba_bdd_translate_proxy::format_state): Delegate formating
+	to the proxied automata.
+	* tgba/tgbaexplicit.cc (state_explicit::clone): New method.
+	* src/tgba/tgbaexplicit.cc (tgba_explicit::get_condition,
+	tgba_explicit::get_promise): Call ltl::destroy on existing formulae.
+	* tgbatest/Makefile.am (check_PROGRAMS): Add explprod.
+	(explprod_SOURCES): New variable.
+	(TESTS): Add explprod.test.
+	(CLEANFILES): Add input1 and input2.
+
 2003-06-12  Alexandre Duret-Lutz  <aduret@src.lip6.fr>
 
 	* src/tgba/tgbabddconcrete.cc (set_init_state, succ_iter): Make
diff --git a/src/tgba/state.hh b/src/tgba/state.hh
index 608e6fb0c..202534216 100644
--- a/src/tgba/state.hh
+++ b/src/tgba/state.hh
@@ -22,6 +22,28 @@ namespace spot
     /// \sa spot::state_ptr_less_than
     virtual int compare(const state* other) const = 0;
 
+    /// \brief Translate a state.
+    ///
+    /// If this state uses any BDD variable.  This function
+    /// should rewrite the variables according to \a rewrite.
+    /// This used by spot::tgbabddtranslateproxy.
+    virtual void translate(bddPair* rewrite)
+    {
+      // This does nothing by default and is
+      // overridden in spot::state_bdd.
+      (void) rewrite;
+    }
+
+    /// Duplicate a state.
+    virtual state* clone() const = 0;
+
+    /// Return the BDD part of the state.
+    virtual bdd
+    as_bdd() const
+    {
+      return bddtrue;
+    }
+
     virtual ~state()
     {
     }
diff --git a/src/tgba/statebdd.cc b/src/tgba/statebdd.cc
index 028eabb58..d6b623790 100644
--- a/src/tgba/statebdd.cc
+++ b/src/tgba/statebdd.cc
@@ -1,9 +1,10 @@
 #include "statebdd.hh"
-#include "bddprint.hh"
+#include <bdd.h>
 #include <cassert>
 
 namespace spot
 {
+
   int
   state_bdd::compare(const state* other) const
   {
@@ -14,4 +15,18 @@ namespace spot
     assert(o);
     return o->as_bdd().id() - state_.id();
   }
+
+  void
+  state_bdd::translate(bddPair* rewrite)
+  {
+    state_ = bdd_replace(state_, rewrite);
+  }
+
+  /// Duplicate a state.
+  state_bdd*
+  state_bdd::clone() const
+  {
+    return new state_bdd(*this);
+  }
+
 }
diff --git a/src/tgba/statebdd.hh b/src/tgba/statebdd.hh
index 2a4e970e0..2927bd44c 100644
--- a/src/tgba/statebdd.hh
+++ b/src/tgba/statebdd.hh
@@ -16,20 +16,15 @@ namespace spot
     }
 
     /// Return the BDD part of the state.
-    bdd
+    virtual bdd
     as_bdd() const
     {
       return state_;
     }
 
-    /// Return the BDD part of the state.
-    bdd&
-    as_bdd()
-    {
-      return state_;
-    }
-
     virtual int compare(const state* other) const;
+    virtual void translate(bddPair* rewrite);
+    virtual state_bdd* clone() const;
 
   protected:
     bdd state_;			///< BDD representation of the state.
diff --git a/src/tgba/tgbabddprod.cc b/src/tgba/tgbabddprod.cc
index 73b74961d..4dd346e37 100644
--- a/src/tgba/tgbabddprod.cc
+++ b/src/tgba/tgbabddprod.cc
@@ -26,6 +26,12 @@ namespace spot
     return right_->compare(o->right());
   }
 
+  state_bdd_product*
+  state_bdd_product::clone() const
+  {
+    return new state_bdd_product(*this);
+  }
+
   ////////////////////////////////////////////////////////////
   // tgba_bdd_product_succ_iterator
 
@@ -35,6 +41,13 @@ namespace spot
   {
   }
 
+  tgba_bdd_product_succ_iterator::~tgba_bdd_product_succ_iterator()
+  {
+    delete left_;
+    if (right_)
+      delete right_;
+  }
+
   void
   tgba_bdd_product_succ_iterator::step_()
   {
@@ -67,8 +80,20 @@ namespace spot
   void
   tgba_bdd_product_succ_iterator::first()
   {
+    if (!right_)
+      return;
+
     left_->first();
     right_->first();
+    // If one of the two successor set is empty initially, we reset
+    // right_, so that done() can detect this situation easily.  (We
+    // choose to reset right_ because this variable is already used by
+    // done().)
+    if (left_->done() || right_->done())
+      {
+	delete right_;
+	right_ = 0;
+      }
     next_non_false_();
   }
 
@@ -82,18 +107,15 @@ namespace spot
   bool
   tgba_bdd_product_succ_iterator::done()
   {
-    return right_->done();
+    return !right_ || right_->done();
   }
 
 
-  state_bdd*
+  state_bdd_product*
   tgba_bdd_product_succ_iterator::current_state()
   {
-    state_bdd* ls = dynamic_cast<state_bdd*>(left_->current_state());
-    state_bdd* rs = dynamic_cast<state_bdd*>(right_->current_state());
-    assert(ls);
-    assert(rs);
-    return new state_bdd_product(ls, rs);
+    return new state_bdd_product(left_->current_state(),
+				 right_->current_state());
   }
 
   bdd
@@ -149,11 +171,8 @@ namespace spot
   state*
   tgba_bdd_product::get_init_state() const
   {
-    state_bdd* ls = dynamic_cast<state_bdd*>(left_->get_init_state());
-    state_bdd* rs = dynamic_cast<state_bdd*>(right_->get_init_state());
-    assert(ls);
-    assert(rs);
-    return new state_bdd_product(ls, rs);
+    return new state_bdd_product(left_->get_init_state(),
+				 right_->get_init_state());
   }
 
   tgba_bdd_product_succ_iterator*
diff --git a/src/tgba/tgbabddprod.hh b/src/tgba/tgbabddprod.hh
index 3bd034f82..7e1e84a21 100644
--- a/src/tgba/tgbabddprod.hh
+++ b/src/tgba/tgbabddprod.hh
@@ -7,7 +7,7 @@
 namespace spot
 {
 
-  /// \brief A state for spot::tgba_bdd_product.  
+  /// \brief A state for spot::tgba_bdd_product.
   ///
   /// This state is in fact a pair of state: the state from the left
   /// automaton and that of the right.
@@ -19,32 +19,33 @@ namespace spot
     /// \param right The state from the right automaton.
     /// These state are acquired by spot::state_bdd_product, and will
     /// be deleted on destruction.
-    state_bdd_product(state_bdd* left, state_bdd* right)
-      : state_bdd(left->as_bdd() & right->as_bdd()), 
-	left_(left), 
+    state_bdd_product(state* left, state* right)
+      : state_bdd(left->as_bdd() & right->as_bdd()),
+	left_(left),
 	right_(right)
     {
     }
-    
+
     virtual ~state_bdd_product();
 
-    state_bdd* 
+    state*
     left() const
     {
       return left_;
     }
 
-    state_bdd* 
+    state*
     right() const
     {
       return right_;
     }
 
     virtual int compare(const state* other) const;
+    virtual state_bdd_product* clone() const;
 
   private:
-    state_bdd* left_;		///< State from the left automaton.
-    state_bdd* right_;		///< State from the right automaton.
+    state* left_;		///< State from the left automaton.
+    state* right_;		///< State from the right automaton.
   };
 
 
@@ -52,16 +53,18 @@ namespace spot
   class tgba_bdd_product_succ_iterator: public tgba_succ_iterator
   {
   public:
-    tgba_bdd_product_succ_iterator(tgba_succ_iterator* left, 
+    tgba_bdd_product_succ_iterator(tgba_succ_iterator* left,
 				   tgba_succ_iterator* right);
-    
+
+    virtual ~tgba_bdd_product_succ_iterator();
+
     // iteration
     void first();
     void next();
     bool done();
 
     // inspection
-    state_bdd* current_state();
+    state_bdd_product* current_state();
     bdd current_condition();
     bdd current_promise();
 
@@ -77,7 +80,7 @@ namespace spot
     tgba_succ_iterator* right_;
     bdd current_cond_;
   };
-  
+
   /// \brief A lazy product.  (States are computed on the fly.)
   class tgba_bdd_product : public tgba
   {
@@ -87,12 +90,12 @@ namespace spot
     /// \param right The right automata in the product.
     /// Do not be fooled by these arguments: a product \emph is commutative.
     tgba_bdd_product(const tgba& left, const tgba& right);
-    
+
     virtual ~tgba_bdd_product();
-    
+
     virtual state* get_init_state() const;
 
-    virtual tgba_bdd_product_succ_iterator* 
+    virtual tgba_bdd_product_succ_iterator*
     succ_iter(const state* state) const;
 
     virtual const tgba_bdd_dict& get_dict() const;
diff --git a/src/tgba/tgbabddtranslateproxy.cc b/src/tgba/tgbabddtranslateproxy.cc
index 51d34764c..d1a51bf3b 100644
--- a/src/tgba/tgbabddtranslateproxy.cc
+++ b/src/tgba/tgbabddtranslateproxy.cc
@@ -9,12 +9,18 @@ namespace spot
   // --------------------------------------
 
   tgba_bdd_translate_proxy_succ_iterator::
-  tgba_bdd_translate_proxy_succ_iterator(tgba_succ_iterator_concrete* it,
+  tgba_bdd_translate_proxy_succ_iterator(tgba_succ_iterator* it,
 					 bddPair* rewrite)
     : iter_(it), rewrite_(rewrite)
   {
   }
 
+  tgba_bdd_translate_proxy_succ_iterator::
+  ~tgba_bdd_translate_proxy_succ_iterator()
+  {
+    delete iter_;
+  }
+
   void
   tgba_bdd_translate_proxy_succ_iterator::first()
   {
@@ -33,11 +39,11 @@ namespace spot
     return iter_->done();
   }
 
-  state_bdd*
+  state*
   tgba_bdd_translate_proxy_succ_iterator::current_state()
   {
-    state_bdd* s = iter_->current_state();
-    s->as_bdd() = bdd_replace(s->as_bdd(), rewrite_);
+    state* s = iter_->current_state();
+    s->translate(rewrite_);
     return s;
   }
 
@@ -99,25 +105,24 @@ namespace spot
     bdd_freepair(rewrite_to_);
   }
 
-  state_bdd*
+  state*
   tgba_bdd_translate_proxy::get_init_state() const
   {
-    state_bdd* s = dynamic_cast<state_bdd*>(from_.get_init_state());
-    assert(s);
-    s->as_bdd() = bdd_replace(s->as_bdd(), rewrite_to_);
+    state* s = from_.get_init_state();
+    s->translate(rewrite_to_);
     return s;
   }
 
   tgba_bdd_translate_proxy_succ_iterator*
-  tgba_bdd_translate_proxy::succ_iter(const state* state) const
+  tgba_bdd_translate_proxy::succ_iter(const state* s) const
   {
-    const state_bdd* s = dynamic_cast<const state_bdd*>(state);
-    assert(s);
-    state_bdd s2(bdd_replace(s->as_bdd(), rewrite_from_));
-    tgba_succ_iterator_concrete* it =
-      dynamic_cast<tgba_succ_iterator_concrete*>(from_.succ_iter(&s2));
-    assert(it);
-    return new tgba_bdd_translate_proxy_succ_iterator(it, rewrite_to_);
+    state* s2 = s->clone();
+    s2->translate(rewrite_from_);
+    tgba_bdd_translate_proxy_succ_iterator *res =
+      new tgba_bdd_translate_proxy_succ_iterator(from_.succ_iter(s2),
+						 rewrite_to_);
+    delete s2;
+    return res;
   }
 
   const tgba_bdd_dict&
@@ -127,12 +132,13 @@ namespace spot
   }
 
   std::string
-  tgba_bdd_translate_proxy::format_state(const state* state) const
+  tgba_bdd_translate_proxy::format_state(const state* s) const
   {
-    const state_bdd* s = dynamic_cast<const state_bdd*>(state);
-    assert(s);
-    return bdd_format_set(to_, s->as_bdd());
+    state* s2 = s->clone();
+    s2->translate(rewrite_from_);
+    std::string res = from_.format_state(s2);
+    delete s2;
+    return res;
   }
 
-
 }
diff --git a/src/tgba/tgbabddtranslateproxy.hh b/src/tgba/tgbabddtranslateproxy.hh
index 5901995cb..ffb2488fa 100644
--- a/src/tgba/tgbabddtranslateproxy.hh
+++ b/src/tgba/tgbabddtranslateproxy.hh
@@ -2,7 +2,6 @@
 # define SPOT_TGBA_TGBABDDTRANSLATEPROXY_HH
 
 #include "tgba.hh"
-#include "succiterconcrete.hh"
 
 namespace spot
 {
@@ -11,8 +10,9 @@ namespace spot
   class tgba_bdd_translate_proxy_succ_iterator: public tgba_succ_iterator
   {
   public:
-    tgba_bdd_translate_proxy_succ_iterator
-    (tgba_succ_iterator_concrete* it, bddPair* rewrite);
+    tgba_bdd_translate_proxy_succ_iterator(tgba_succ_iterator* it,
+					   bddPair* rewrite);
+    virtual ~tgba_bdd_translate_proxy_succ_iterator();
 
     // iteration
     void first();
@@ -20,11 +20,11 @@ namespace spot
     bool done();
 
     // inspection
-    state_bdd* current_state();
+    state* current_state();
     bdd current_condition();
     bdd current_promise();
   protected:
-    tgba_succ_iterator_concrete* iter_;
+    tgba_succ_iterator* iter_;
     bddPair* rewrite_;
   };
 
@@ -42,7 +42,7 @@ namespace spot
 
     virtual ~tgba_bdd_translate_proxy();
 
-    virtual state_bdd* get_init_state() const;
+    virtual state* get_init_state() const;
 
     virtual tgba_bdd_translate_proxy_succ_iterator*
     succ_iter(const state* state) const;
diff --git a/src/tgba/tgbaexplicit.cc b/src/tgba/tgbaexplicit.cc
index f2ab0adae..4feab5c41 100644
--- a/src/tgba/tgbaexplicit.cc
+++ b/src/tgba/tgbaexplicit.cc
@@ -1,4 +1,5 @@
 #include "ltlast/atomic_prop.hh"
+#include "ltlvisit/destroy.hh"
 #include "tgbaexplicit.hh"
 #include <cassert>
 
@@ -14,37 +15,37 @@ namespace spot
   {
   }
 
-  void 
+  void
   tgba_explicit_succ_iterator::first()
   {
     i_ = s_->begin();
   }
 
-  void 
+  void
   tgba_explicit_succ_iterator::next()
   {
     ++i_;
   }
 
-  bool 
+  bool
   tgba_explicit_succ_iterator::done()
   {
     return i_ == s_->end();
   }
 
-  state_explicit* 
+  state_explicit*
   tgba_explicit_succ_iterator::current_state()
   {
     return new state_explicit((*i_)->dest);
   }
 
-  bdd 
+  bdd
   tgba_explicit_succ_iterator::current_condition()
   {
     return (*i_)->condition;
   }
 
-  bdd 
+  bdd
   tgba_explicit_succ_iterator::current_promise()
   {
     return (*i_)->promise;
@@ -54,7 +55,7 @@ namespace spot
   ////////////////////////////////////////
   // state_explicit
 
-  const tgba_explicit::state* 
+  const tgba_explicit::state*
   state_explicit::get_state() const
   {
     return state_;
@@ -68,6 +69,12 @@ namespace spot
     return o->get_state() - get_state();
   }
 
+  state_explicit*
+  state_explicit::clone() const
+  {
+    return new state_explicit(*this);
+  }
+
   ////////////////////////////////////////
   // tgba_explicit
 
@@ -88,7 +95,7 @@ namespace spot
 	delete i->second;
       }
   }
-  
+
   tgba_explicit::state*
   tgba_explicit::add_state(const std::string& name)
   {
@@ -109,7 +116,7 @@ namespace spot
   }
 
   tgba_explicit::transition*
-  tgba_explicit::create_transition(const std::string& source, 
+  tgba_explicit::create_transition(const std::string& source,
 				   const std::string& dest)
   {
     tgba_explicit::state* s = add_state(source);
@@ -135,6 +142,7 @@ namespace spot
       }
     else
       {
+	ltl::destroy(f);
 	v = i->second;
       }
     return v;
@@ -162,6 +170,7 @@ namespace spot
       }
     else
       {
+	ltl::destroy(f);
 	v = i->second;
       }
     return v;
@@ -177,27 +186,27 @@ namespace spot
     t->promise &= ! ithvar(get_promise(f));
   }
 
-  state* 
+  state*
   tgba_explicit::get_init_state() const
   {
     return new state_explicit(init_);
   }
 
-  tgba_succ_iterator* 
+  tgba_succ_iterator*
   tgba_explicit::succ_iter(const spot::state* state) const
   {
     const state_explicit* s = dynamic_cast<const state_explicit*>(state);
     assert(s);
     return new tgba_explicit_succ_iterator(s->get_state());
   }
-    
-  const tgba_bdd_dict& 
+
+  const tgba_bdd_dict&
   tgba_explicit::get_dict() const
   {
     return dict_;
   }
 
-  std::string 
+  std::string
   tgba_explicit::format_state(const spot::state* s) const
   {
     const state_explicit* se = dynamic_cast<const state_explicit*>(s);
diff --git a/src/tgba/tgbaexplicit.hh b/src/tgba/tgbaexplicit.hh
index 8583337d1..2b34dcebd 100644
--- a/src/tgba/tgbaexplicit.hh
+++ b/src/tgba/tgbaexplicit.hh
@@ -68,6 +68,8 @@ namespace spot
 
     virtual int compare(const spot::state* other) const;
 
+    virtual state_explicit* clone() const;
+
     virtual ~state_explicit()
     {
     }
diff --git a/src/tgbaalgos/dotty.cc b/src/tgbaalgos/dotty.cc
index 5dbcb2cb4..afe587dba 100644
--- a/src/tgbaalgos/dotty.cc
+++ b/src/tgbaalgos/dotty.cc
@@ -24,7 +24,7 @@ namespace spot
     node = m.size() + 1;
     m[st] = node;
 
-    os << "  " << node << " [label=\"" 
+    os << "  " << node << " [label=\""
        << g.format_state(st) << "\"]" << std::endl;
     return true;
   }
diff --git a/src/tgbatest/Makefile.am b/src/tgbatest/Makefile.am
index 28140d1b0..49929a83c 100644
--- a/src/tgbatest/Makefile.am
+++ b/src/tgbatest/Makefile.am
@@ -9,11 +9,13 @@ check_PROGRAMS = \
   tgbaread \
   ltl2tgba \
   ltlprod \
-  bddprod
+  bddprod \
+  explprod
 
 bddprod_SOURCES = ltlprod.cc
 bddprod_CXXFLAGS = -DBDD_CONCRETE_PRODUCT
 explicit_SOURCES = explicit.cc
+explprod_SOURCES = explprod.cc
 ltl2tgba_SOURCES = ltl2tgba.cc
 ltlprod_SOURCES = ltlprod.cc
 readsave_SOURCES = readsave.cc
@@ -25,8 +27,9 @@ TESTS = \
   readsave.test \
   ltl2tgba.test \
   ltlprod.test \
-  bddprod.test
+  bddprod.test \
+  explprod.test
 
 EXTRA_DIST = $(TESTS)
 
-CLEANFILES = input stdout expected
+CLEANFILES = input input1 input2 stdout expected
diff --git a/src/tgbatest/explicit.cc b/src/tgbatest/explicit.cc
index dd980a845..679eb8b4f 100644
--- a/src/tgbatest/explicit.cc
+++ b/src/tgbatest/explicit.cc
@@ -6,10 +6,10 @@
 int
 main()
 {
-  spot::ltl::default_environment& e = 
+  spot::ltl::default_environment& e =
     spot::ltl::default_environment::instance();
   spot::tgba_explicit a;
-  
+
   typedef spot::tgba_explicit::transition trans;
 
   trans* t1 = a.create_transition("state 0", "state 1");
diff --git a/src/tgbatest/explprod.cc b/src/tgbatest/explprod.cc
new file mode 100644
index 000000000..4e20a0d6a
--- /dev/null
+++ b/src/tgbatest/explprod.cc
@@ -0,0 +1,48 @@
+#include <iostream>
+#include <cassert>
+#include "tgba/ltl2tgba.hh"
+#include "tgba/tgbaexplicit.hh"
+#include "tgba/tgbabddprod.hh"
+#include "tgbaparse/public.hh"
+#include "tgbaalgos/save.hh"
+#include "ltlast/allnodes.hh"
+
+void
+syntax(char* prog)
+{
+  std::cerr << prog << " file1 file2" << std::endl;
+  exit(2);
+}
+
+int
+main(int argc, char** argv)
+{
+  int exit_code = 0;
+
+  if (argc != 3)
+    syntax(argv[0]);
+
+  spot::ltl::environment& env(spot::ltl::default_environment::instance());
+  spot::tgba_parse_error_list pel1;
+  spot::tgba_explicit* a1 = spot::tgba_parse(argv[1], pel1, env);
+  if (spot::format_tgba_parse_errors(std::cerr, pel1))
+    return 2;
+  spot::tgba_parse_error_list pel2;
+  spot::tgba_explicit* a2 = spot::tgba_parse(argv[2], pel2, env);
+  if (spot::format_tgba_parse_errors(std::cerr, pel1))
+    return 2;
+  
+  {
+    spot::tgba_bdd_product p(*a1, *a2);
+    spot::tgba_save_reachable(std::cout, p);
+  }
+
+  assert(spot::ltl::unop::instance_count() == 0);
+  assert(spot::ltl::binop::instance_count() == 0);
+  assert(spot::ltl::multop::instance_count() == 0);
+  assert(spot::ltl::atomic_prop::instance_count() != 0);
+  delete a1;
+  delete a2;
+  assert(spot::ltl::atomic_prop::instance_count() == 0);
+  return exit_code;
+}
diff --git a/src/tgbatest/explprod.test b/src/tgbatest/explprod.test
new file mode 100755
index 000000000..8a091429b
--- /dev/null
+++ b/src/tgbatest/explprod.test
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+. ./defs
+
+set -e
+
+cat >input1 <<EOF
+s1, s3, a,;
+s1, s2, b, p1;
+s2, s1, !a,;
+s2, s3, c,;
+EOF
+
+cat >input2 <<EOF
+s1, s2, b, p2;
+s2, s1, a, p3;
+EOF
+
+cat >expected <<EOF
+"s1 * s1", "s3 * s2", a b, p2;
+"s1 * s1", "s2 * s2", b, p2 p1;
+"s2 * s2", "s3 * s1", c a, p3;
+EOF
+
+./explprod input1 input2 > stdout
+
+cat stdout
+diff stdout expected
+rm input1 input2 stdout expected
diff --git a/src/tgbatest/readsave.cc b/src/tgbatest/readsave.cc
index ed094c60d..0077eb61d 100644
--- a/src/tgbatest/readsave.cc
+++ b/src/tgbatest/readsave.cc
@@ -33,7 +33,7 @@ main(int argc, char** argv)
   spot::tgba_parse_error_list pel;
   spot::tgba_explicit* a = spot::tgba_parse(argv[filename_index],
 					    pel, env, debug);
-  
+
   exit_code =
     spot::format_tgba_parse_errors(std::cerr, pel);